Answers
The solution of the z-score of the standard deviation is [tex]0.5[/tex].
What is the standard deviation?
The standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.
Here given that,
The weight for twelve month old baby boys are normally distributed wih the mean [tex]22.5[/tex] pounds and a standard deviation of [tex]2.2[/tex] pounds.
Here, [tex]mean=22.5[/tex] , standard deviation [tex]=2.2[/tex]
z-score = (Blood pressure reading - mean)/standard deviation
[tex]=\frac{23.6=22.5}{2.2}\\\\=\frac{1.1}{2.2}\\\\=0.5[/tex]
Hence, the percentage is [tex]0.5[/tex].
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Related Questions
let f(x, y) = 1/squareroot x^2 + y^2. Compute a) ∇f(x, y).
Answers
∇f(x, y) of the function f(x, y) = 1 / squareroot (x^2 + y^2) is
Given function is f (x, y) = 1 / squareroot (x ^ 2 + y ^ 2)
∇f(x, y) that is the gradient of the function is ([tex]f_{x}[/tex], [tex]f_{y}[/tex])
[tex]f_{x}[/tex] = partial differentiation of the given function with respect to x
= - x / ( (x ^ 2 + y ^ 2) ^ 3/2)
[tex]f_{y}[/tex] = partial differentiation of the given function with respect to y
= - y / ( (x ^ 2 + y ^ 2) ^ 3/2)
Hence, the ∇f(x, y), the gradient of the function is:
(- x / ( (x ^ 2 + y ^ 2) ^ 3/2) , - y / ( (x ^ 2 + y ^ 2) ^ 3/2))
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655Δ i a 4-digit number with one of it digit repreented by Δ. 655Δ i diviible by 3. Which of thee i alo a number diviible by 3?
Answers
As per the divisibility rule, the number is 6552
In math, the divisibility rule states that one to check whether a number is divisible by another number without the actual method of division here if a number is completely divisible by another number then the quotient will be a whole number and the remainder will be zero.
Here we have given that 655Δ i a 4-digit number with one of it digit represented by Δ. 655Δ is divisible by 3.
Here we have to find the missing digit in the given number.
Here we have given that the number is 655Δ.
And we have also given that the given number is divisible y 3.
So, here we must know the divisibility rule of 3.
The divisibility rule of 3 states that a number is completely divisible by 3 if the sum of its digits is divisible by 3.
So, based on these rules let us consider that x be the missing digit.
Then it can be written as.
=> [6 + 5 + 5 + x]/3
=> 16 + x/3
Here we put the value of x as 2, then we get 18, that is divisible by 3.
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Mr. Saunder bought a 19 pound turkey for Thankgiving. The total cot of the turkey wa $25. 65. What wa the cot of turkey per pound? Write an equation to repreent the ituation
Answers
The equation used to represent the situation:
Cost per pound = Total Cost of Turkey / Number of Pounds
A formula known as an equation uses the equals sign to express how two expressions are equal. The meanings of the word equation and its translations into other languages might vary slightly; Finding the values of the variables that cause the equality to be true is the first step in solving an equation with variables.
Quantity = 19 pounds
Total Cost = $25.65
Now to calculate the cost of Turkey per pound, we can use the following equation:
Cost of Turkey per pound = Total Cost / Quantity of Pounds
Cost per pound = 25.65 / 19
Therefore, the cost of turkey per pound = $1.35
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find two numbers whose difference is 88 and whose product is a minimum. (smaller number) (larger number)
Answers
Two two numbers whose difference is 88 and whose product is a minimum are -44 and 44.
How to solve?Let the numbers be x and y where x is larger value and y is smaller number.
According to ques,
x - y =88
and we need to make product of numbers i.e 'xy' minimum.
So we can take x = 88 + y ------(2)
substituting value of x in xy, we get
(88 + y) (y) = y² + 88y ------(1) to make it minimum we need to equate its derivative equal to zero.
derivative of (1) is 2y + 88
Equating it to zero, we get
2y + 88 = 0
subtracting 88 from both sides, we get
2y = -88
Dividing 2 from both sides, we get
y = -44 ------(3)
Substituting value of y from (3) in (2), we get
x = 88 - 44
x = 44
So, we get value of x as 44 and y as -44 to get their product as minimum.
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Determine which integer in the solution set will make the equation true.
t − 52 = −13
S: {−65, −39, 4, 39}
Answers
Answer:
t = 39
Step-by-step explanation:
t - 52 = - 13 ( isolate t by adding 52 to both sides )
t = - 13 + 52 = 39
the integer from the solution set S that makes the equation true is 39
Answer:
[tex] \sf \: t = 39[/tex]
Step-by-step explanation:
Now we have to,
→ find the required value of t.
The equation is,
→ t - 52 = -13
Then the value of t will be,
→ t - 52 = -13
→ t = -13 + 52
→ [ t = 39 ]
Hence, the value of t is 39.
Solve the proportion. ((2b-1)/2)=((b-1)/6)
Answers
Answer: b=2/5
Step-by-step explanation:
Step 1: Cross-multiply.
2b−1/2 = b−1/6
(2b−1)*(6)=(b−1)*(2)
12b−6=2b−2
Step 2: Subtract 2b from both sides.
12b−6−2b=2b−2−2b
10b−6=−2
Step 3: Add 6 to both sides.
10b−6+6=−2+6
10b=4
Step 4: Divide both sides by 10.
10b/10 = 4/10
b = 2/5
solve the equation 4s+4=9
Answers
Answer: Exact Form: s = 5/4
Decimal Form: s = 1.25
Mixed Number Form: s = 1 1/4
Saginaw Elementary school's
lost and found has a total of 72
items. Four out of 6 are
jackets, the remaining are
gloves. How many items in the
lost and found are gloves?
Answers
Answer:
24
Step-by-step explanation:
If 4/6 of the items are jackets and the rest are gloves, this means 1 - 4/6 = 2/6 = 1/3 of the items are gloves in Saginaw Elementary School's lost and found.
We do 72 total items × 1/3 items are gloves = 24 items in the lost and found are gloves
Points A, B, and C are colinear. A B C What is the slope of BC in simplest form?
Answers
Answer:
-1 /3
Step-by-step explanation:
To get from one point to the next, go DOWN1 and OVER3.
DOWN1 and OVER3 is the slope -1/3
From B to C it looks like DOWN2 and OVER6. That is -2/6. But that can be reduced to -1/3. So its the same.
Select the true statements about the inequalities. -10 > -15, so -10 is located to the left of -15 on a horizontal number line. 8 > -13, so 8 is located to the left of -13 on a horizontal number line. 9 > -5, so 9 is located to the right of -5 on a horizontal number line. -6 < 1, so -6 is located below 1 on a vertical number line. -14 > 7, so -14 is located below 7 on a vertical number line. 11 < -13, so 11 is located to the right of -13 on a horizontal number line.
Answers
The statement which is true for the inequality will be equal to 9 > -5, so 9 is located to the right of -5 on a horizontal number line.
What is number line?A straight line of numbers is shown visually as a number line. This line is employed to compare integers on an endless line that extends on both sides, either horizontally or vertically, at equal intervals.
As per the given inequalities given in the question,
1.
-10 > -15, so -10 is located to the left of -15 on a horizontal number line.
The statement is wrong because -10 is located on the right side of -15
2.
8 > -13, so 8 is located to the left of -13 on a horizontal number line.
The statement is wrong because 8 is located on the right side of -13.
3.
9 > -5, so 9 is located to the right of -5 on a horizontal number line.
This statement is true, that 9 is located to the right of -5.
4.
-6 < 1, so -6 is located below 1 on a vertical number line.
This statement is true, that -6 is located to the below of -5.
5.
-14 > 7, so -14 is located below 7 on a vertical number line.
This statement is false.
6.
11 < -13, so 11 is located to the right of -13 on a horizontal number line.
This statement is also false.
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A bag of dry pet food costs the pet store $18.66. A case of canned food costs $11.43. The owner puts in an order for 27 bags of dry food and 34 cases of canned food. The owner thinks he owes $1,835.49.
Answers
Answer: $892.44
Step-by-step explanation:
Take 27 times 18.66 = $503.82
Then take 34 times 11.43 = $388.62
Then add them to find total
503.82 + 388.62 = $892.44
The owner only owe $892.44
What is the value of x?
Answers
The value of x is 27 in the given figure.
What is Angle?An angle is formed when two straight lines or rays meet at a common endpoint.
We need to find the value of x.
The given two angles are (4x+7) and 5(x-4).
The two angles are opposite angles so the two angles are equal.
Let us equate 4(x+7) and 5(x-4).
4x+7=5(x-4).
Apply distributive property on RHS
4x+7=5x-20
4x-5x=-20-7
-x=-27
Multiply both sides by minus
x=27.
Hence, the value of x is 27.
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Find each of the missing sides and angles of the following triangle. Round to the nearest tenth if necessary. (one decimal) \large m\angle B= º a = b =
Answers
The right-angled triangle have angle B = 40°, side c = 20.9 and b = 13.4 approximately to the nearest tenth.
How to calculate for the missing angles and sides of the right-angled triangleWe shall use the trigonometric ratios of sine and cosine of the angle 50° to get the length of the sides and apply the rule of the sum of interior angles of a triangle to get the angle B.
sin50° = opposite/hypotenuse
sin50° = 16/c
c = 16/(sin50°) {by cross multiplication}
c = 20.9
cos50° = adjacent/hypotenuse
cos50° = b/20.9 {by cross multiplication}
b = 20.9 × cos50°
b = 13.4
The sum of interior angles of a triangle is equal to 180° so;
angle B = 180° - (90° + 50°)
angle B = 180° - 140°
angle B = 40°
Therefore, by application of trigonometric ratios sine and cosine, we have the sides of the right-angled triangle b = 13.4, c = 20.9, and the angle B = 40°.
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If a wire 1,325 feet long ha a reitance of 0. 65 ohm, what i the rei-tance to the nearet hundredth of one mile of the ame wire?
Answers
The resistance of wire to the nearest hundredth of one mile of the wire with mentioned details is 2.59 ohm.
Firstly we will convert length of wire to feet. As per the known information, 1 mile is 5280 feet. Moreover, as known resistance and length are directly proportional to each other.
Resistance 1/Resistance 2 = length 1/length 2
0.65/Resistance 2 = 1325/5280
Rewriting the equation according to length 2
Resistance 2 = (0.65×5280)/1325
Performing multiplication on Right Hand Side of the equation
Resistance 2 = 3432/1325
Performing division on Right Hand Side of the equation
Resistance 2 = 2.59 ohm
The resistance of wire is 2.59 ohm.
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1. For each of the following, find 2 solutions and 2 non solutions.
a. 2x + 5y = 30
Answers
The following, find 2 solutions and 2 non solutions is [tex]x=\frac{30-5 y}{2}[/tex]
What is non solutions?
Ideal solutions are those that follow Raoult's law throughout the whole concentration range. A solution is said to as a non-ideal solution if it violates Raoult's law.
[tex]$$2 x+5 y=30$$[/tex]
[tex]Move $5 y$ to the right side[/tex]
[tex]$$2 x=30-5 y$$[/tex]
[tex]Divide both sides by 2[/tex]
[tex]$$\frac{2 x}{2}=\frac{30}{2}-\frac{5 y}{2}$$Simplify$$x=\frac{30-5 y}{2}$$[/tex]
Non solutions, in the plural, refer to anything that falls short of offering a fix for a problem. These batteries also lose their charge, rendering them useless for solving the more significant issue of storing and utilizing renewable energy.
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i neei need help on this question
Answers
The equation of the line n parallel to line m will be y = 3/2x - 9. The correct option is A.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
The equation of the lime m perpendicular to the line y = -2/3x + 6 will be,
y = 3/2x + c
The line n is parallel to n and passes through the point (4,-3),
y = 3/2x + c
-3 = (3/2 x 4) + c
-3 = 6 + c
c = -9
The equation of line n will be written as,
y = 3/2x - 9
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Which of the following is an example of rational function?
1.f(x)=3x²+1 over x-1
2.x over 3 = 8 over 3
3.1 over 3x-1 +3<0â
Answers
The example of rational function is option(1) which is f(x)=3x²+1 over x-1
What is Rational Function ?
A rational function is any function that can be defined by a rational fraction, which is an algebraic fraction such that both the numerator and the denominator are polynomials. The coefficients of the polynomials need not be rational numbers; they may be taken in any field K.A rational function is a function that is the ratio of polynomials. Any function of one variable, x, is called a rational function if, it can be represented as f(x) = p(x)/q(x), where p(x) and q(x) are polynomials such that q(x) ≠ 0.A rational function in the form of f(x) = p(x) / q(x) where, q(x) ≠ 0Hence, the example of rational function is option(1) which is f(x)=3x²+1 over x-1.
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In a computer catalog, the diagonal distance of a computer monitor screen is labeled as 19 inches. If the screen measures 10 inches in height, what is the width of the screen?
A.
B.
C. 19 in.
D. 10 in.
Answers
Answer: 16.16 in
Step-by-step explanation:
10^2 + x^2 = 19^2
100 + x^2 = 361
x^2 = 261
x = 16.16 in
Gloria go shopping for school supplies she had a balance of $235.55 When she left home to school supplies total $52.50 she had a 10% off coupon what was the balance in your checking account after buying school supplies
Answers
Saved $5.25
189.55
...
.............
...
the heart shaped card is made by placing a square and two semicircles together. what is the area of the card?
Answers
The total area of the card is 4+2π that is calculated as per the description.
Heart shaped ornament is made from a square and two semicircles each of whose diameter is the side of the square where one co-ordinate unit represents one in the coordinates of the six points are given.
The side of the square is 4 units or 4 inches as mentioned you can see from the cord this side of the square is 4 and these two are semicircles and the diameter of the semicircle is 4 and it is mentioned because these semicircles are built on the side of the square so diameter both semicircle equals to 4 inches or 4 units that implies radius would be diameter / to which equals to 2 inches . 2 π R by 2 that gives us to the second boundary as well as third boundary is semicircle to its perimeter aur length would be π R 25 + fire we are writing fire two times because there are two semicircles this one the fourth surface is also side of square this also equals to 4 inches so the overall aur total perimeter would be sum of all the total perimeter equals to 1 + 2 + 3 + 4 which gives a pool + 4 + 4 which will give you 4 + 4 is 8 + 45.
Thus, the total area of the card is 4+2π.
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Identify the equation that shows direct variation
Answers
Answer:
y= -5x
Step-by-step explanation:
The formula for direct variation is y=kx
Quadrilateral ABCD is shown on the coordinate plane.
What needs to be proven to conclude that quadrilateral ABCD is a parallelogram?
A
-6 -4 -2
B.
C.
O A. slope of AB = slope of CD and slope of BC = slope of DA
slope of AB= slope of BC and slope of CD= slope of DA
side length of BC= side length of DA and slope of DA x slope of AB = -1
OD. side length of AB= side length of CD and slope of BC x slope of CD=-1
6
4-
2+
-2-
4-
-6-
D
B
6
C
X
Answers
Answer:
The slope of AB = slope of CD and slope of BC = slope of DA
Hope this helps!
Step-by-step explanation:
Given the following sequence, find the 77th term.
-8, -4, 0, 4, 8, ...
Answers
Answer:
Step-by-step explanation:
The given sequence is an arithmetic sequence with a common difference of 4. The 77th term of the sequence is the 77th term of the arithmetic sequence, which is given by the formula:
a_n = a_1 + (n - 1) * d
where a_n is the nth term of the sequence, a_1 is the first term of the sequence, and d is the common difference. Substituting the values for a_1, n, and d into this formula, we get:
a_77 = -8 + (77 - 1) * 4
= -8 + 76 * 4
= -8 + 304
= 296
Therefore, the 77th term of the sequence is 296.
Please help me pass this assignment
Answers
Median: 31.5
Q3: 36
IR: 19
Outliers: 83
Mark me Brainly pls
What is 73,653 rounded to nearest hundred ?
Answers
Answer:
73,700
Step-by-step explanation:
You round up on the hundreds place. 73,653
Hope this helps! :)
73,653 rounded to the nearest hundred is: 73,700.
A medical company tested a new drug on 100 people for possible side
effects. This table shows the results.
Side effects No side effects Total
Adults
7
43
50
Children
22
28
50
Total
29
71
100
Compare the probability that an adult has side effects with the probability
that a child has side effects. Draw a conclusion based on your results.
Answers
We can conclude that it is more likely that a child has side effects compared to an adult
What is probability ?
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.
The given information is expressed as
Side effect no side effect total
Adult 7 43 50
Children 22 28 50
Total 29 71 100
Probability is expressed as
Number of favorable outcomes/number of total outcomes
For the probability that an adult has side effects,
Total number of outcomes = 50
Number of favorable outcomes = 7
Probability that an adult has side effects = 7/50 = 0.14
For the probability that a child has side effects,
Total number of outcomes = 50
Number of favorable outcomes = 22
Probability that an adult has side effects = 22/50 = 0.44
Therefore, it is more likely that a child has side effects compared to an adult
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The orientation factor is less important in because the reactants are blank and spherical (nondirectional); all collision orientations are equally effective
Answers
The orientation factor in a chemical reaction relates the frequency factor to the collision factor and depends on the extent of complexity of the reactants in a reaction.
Does the orientation factor depend on temperature?
The direction of the collision between the chlorine atoms and the ozone determines the pace of reaction; if the direction is incorrect, no reaction takes place. The right orientation will allow for response. The direction of collisions is independent of temperature.
According to the Collision Theory, molecules must collide with sufficient activation energy to break and re-form existing bonds, as well as with favorable spatial orientation, in order for a chemical reaction to occur.
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What is the value of expression 10!/(4!7!)
Answers
Answer:
3
Step-by-step explanation:
The factorial of a number n is the product of all the positive integers from 1 to n. In other words, n! = 1 * 2 * 3 * ... * n. For example, the factorial of 5 is 5! = 1 * 2 * 3 * 4 * 5 = 120.
In this case, we are asked to find the value of the expression 10!/(4!7!). To do this, we first need to evaluate the factorials in the numerator and denominator of the expression. Since 10! = 1 * 2 * 3 * ... * 10, we have:
10! = 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10 = 3628800
Similarly, since 4! = 1 * 2 * 3 * 4 and 7! = 1 * 2 * 3 * 4 * 5 * 6 * 7, we have:
4! = 1 * 2 * 3 * 4 = 24
7! = 1 * 2 * 3 * 4 * 5 * 6 * 7 = 5040
Now that we have evaluated the factorials in the expression, we can plug these values into the expression and evaluate it:
10!/(4!7!) = 3628800 / (24 * 5040) = 3628800 / 120960 = 3
Therefore, the value of the expression 10!/(4!7!) is 3.
Note: It is important to remember that the factorial of 0 is defined to be 1, so 0! = 1. This means that any expression involving 0! can be simplified by replacing 0! with 1. For example, the expression 10!/(4!7!0!) can be simplified as follows:
10!/(4!7!0!) = 10!/(4!7!1) = 10!/(4!7) = 10!/(24 * 7) = 10!/168 = 3628800/168 = 3
This is the same result we obtained above using the factorials of 10, 4, and 7.
The value of the given expression is 30.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
The given expression is 10!/(4!7!).
Now, (10×9×8×7!)/(4!7!)
= (10×9×8)/(4×3×2×1)
= 5×3×2
= 30
Therefore, the value of the given expression is 30.
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the 5th grade is having a picnic this Friday. There will be 182 students and 274 adults. Each table seats 12 people. How many tables are needed??
PLS I need the help
Answers
Then to see how many tables are needed, divide the total amount of people by the number of people 1 table can seat, so 456 / 12, which is 38.
So you need 38 tables.
|2х - бу = 1
х- y=1
Answers
Answer:
To solve this system, we need to find the values of x and y that make both equations true at the same time.
Let's start by solving the first equation for y:
|2х - бу = 1
2х - бу = 1
-2х + бу = -1
бу = 1 - 2х
y = (1 - 2х)/б
Now let's substitute this expression for y into the second equation:
x - (1 - 2х)/б = 1
x - 1 + 2х/б = 1
3х/б = 0
x = 0
Substituting this value for x back into the first equation, we get:
y = (1 - 2*0)/б = 1/б
So the solution to the system of equations is x = 0 and y = 1/б.
I hope this helps!