Answer:
163 rounded to the nearest ten = 160.
Step-by-step explanation:
yes since 163 is not 165 or greater its 160 but if it the number was greater than 165 than it would be 170. in this case its not so the answer would be 160.
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.
Out of a randomly selected 3700 people from the population, how many of them
would have an IQ less than 66, to the nearest whole number?
Question 2 of 3
What is the rule for this pattern?
17, 20, 19, 22, 21 …
A. Start with 17, then add 3 and subtract 2 repeatedly.
B. Start with 17, then add 4 and subtract 1 repeatedly.
C. Start with 17, then add 2 and subtract 3 repeatedly.
D. Start with 17, then add 3 and subtract 1 repeatedly.
Answer: B
Step-by-step explanation:
What is the 9th term of the geometric sequence 5, -25, 125,
Answer: 1953125
Step by Step:
5^9 and because it is an odd exponent it is a positive answer for this problem
Find the greatest common factor
12=
16=
Answer:
4
Step-by-step explanation:
it's the best because of my friend its the greatest factor
The vertex form of the quadratic function f(x)=-6x^2-60x-151 is f(x)=a(x-h)^2+k
The values of a, h and k for the given quadratic function are:
a = -6, h = -5 and k = -1
What is vertex form?
This is one way of writing a quadratic function:
f(x) = a(x-h)² +k
(h, k) = vertex
a = vertical stretch
According to the given question:
We're given:
f(x)= -6x² - 60x - 151
To write a quadratic function in vertex form, we must complete the square.
⇒ Put parentheses around the first two terms containing x and x²:
f(x)= (-6x² - 60x) - 151
⇒ Factor out -6 (keeping the x's in the parentheses):
f(x)= -6(x² + 10x) - 151
⇒ To complete the square, add, inside the parentheses, the square of half the coefficient of x.
⇒ In this case, the coefficient of x is 10.
⇒ Half of this value is 5.
⇒ The square of 5 is 25.
⇒ Add this inside the parentheses:
f(x) = -6(x² + 10x + 25) - 151
⇒ Now, we cannot randomly introduce a new value into a function. To balance the +25, subtract -6(25) outside the parentheses:
f(x) = -6(x² + 10x + 25) - 151 - (-6 x 25)
f(x) = -6(x² + 10x + 25) - 151 - (-150)
f(x) = -6(x² + 10x + 25) - 151 + 150
f(x) = -6(x² + 10x + 25) - 1
⇒ Finally, complete the square.
Remember: (a + b)² = a² + 2ab + b²
In this case, a is x, and b is 5:
f(x) = -6(x + 5)² - 1
On comparing with f(x) = a(x-h)² +k we get the values of a, h and k as:
a = -6
h = -5
k = -1
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SOLVE EACH PROPORTION
The linear equation can be solved by using arithmetic operation the answer for 13 is 27/4 etc.
What is linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
13)
9/16 = x/12
x = 27/4
14)
(x - 13)/18 = 12/9
x = 37
15)
7/11 = 18/(x+1)
x = 191/7
16)
(3x-4)/14 = 9/10
x = 83/15
17)
17/15 = 10/(2x -2)
x = 92/17
18)
(x - 16)/(x + 6) = 3/5
x = 49
Thus, the linear equation can be solved by using arithmetic operation the answer for 13 is 27/4 etc.
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multiplications of matrices
The value of matrix multiplication is
a) [tex]C = \begin{pmatrix}14&20\\ 32&46\end{pmatrix}[/tex]
b) [tex]C = \begin{pmatrix}7&35\\ 8&42\end{pmatrix}[/tex]
c) [tex]C = \begin{pmatrix}22&32\\ 26&38\end{pmatrix}[/tex]
d) [tex]C =\begin{pmatrix}-3&-5\\ 34&52\end{pmatrix}[/tex]
What is multiplication of matrices?
The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. The first matrix must have the same number of columns as the second matrix has rows. The number of rows of the resulting matrix equals the number of rows of the first matrix, and the number of columns of the resulting matrix equals the number of columns of the second matrix
Given data ,
a)
Let the first be A
[tex]A = \left[\begin{array}{ccc}1 &2 \\ 3 & 4 \\\end{array}\right][/tex]
Let the second matrix be B
[tex]B = \left[\begin{array}{ccc}4 &6 \\ 5 & 7 \\\end{array}\right][/tex]
Now , the product of matrices A and B is C
where the matrix C is A x B
[tex]C = \begin{pmatrix}1\cdot \:4+2\cdot \:5&1\cdot \:6+2\cdot \:7\\ 3\cdot \:4+4\cdot \:5&3\cdot \:6+4\cdot \:7\end{pmatrix}[/tex]
On simplifying the matrix C , we get
[tex]C = \begin{pmatrix}14&20\\ 32&46\end{pmatrix}[/tex]
Therefore , the value of matrix is [tex]C = \begin{pmatrix}14&20\\ 32&46\end{pmatrix}[/tex]
b)
Let the first matrix be A
[tex]A = \left[\begin{array}{ccc}3 &5 \\ 4 & 6 \\\end{array}\right][/tex]
Let the second matrix be B
[tex]B = \left[\begin{array}{ccc}-1 &0 \\ 2 & 7 \\\end{array}\right][/tex]
Now , the product of matrices A and B is C
where the matrix C is A x B
[tex]C = \begin{pmatrix}3\left(-1\right)+5\cdot \:2&3\cdot \:0+5\cdot \:7\\ 4\left(-1\right)+6\cdot \:2&4\cdot \:0+6\cdot \:7\end{pmatrix}[/tex]
On simplifying the matrix C , we get
[tex]C = \begin{pmatrix}7&35\\ 8&42\end{pmatrix}[/tex]
Therefore , the value of matrix is [tex]C = \begin{pmatrix}7&35\\ 8&42\end{pmatrix}[/tex]
c)
Let the first matrix be A
[tex]A = \left[\begin{array}{ccc}4 &6 \\ 5 & 7 \\\end{array}\right][/tex]
Let the second matrix be B
[tex]B = \left[\begin{array}{ccc}1 &2 \\ 3 & 4 \\\end{array}\right][/tex]
Now , the product of matrices A and B is C
where the matrix C is A x B
[tex]C = \begin{pmatrix}4\cdot \:1+6\cdot \:3&4\cdot \:2+6\cdot \:4\\ 5\cdot \:1+7\cdot \:3&5\cdot \:2+7\cdot \:4\end{pmatrix}[/tex]
On simplifying the matrix C , we get
[tex]C = \begin{pmatrix}22&32\\ 26&38\end{pmatrix}[/tex]
Therefore , the value of matrix is [tex]C = \begin{pmatrix}22&32\\ 26&38\end{pmatrix}[/tex]
d)
Let the first matrix be A
[tex]A = \left[\begin{array}{ccc}-1 &0 \\ 2 & 7 \\\end{array}\right][/tex]
Let the second matrix be B
[tex]B = \left[\begin{array}{ccc}3 &5 \\ 4 & 6 \\\end{array}\right][/tex]
Now , the product of matrices A and B is C
where the matrix C is A x B
[tex]C = \begin{pmatrix}\left(-1\right)\cdot \:3+0\cdot \:4&\left(-1\right)\cdot \:5+0\cdot \:6\\ 2\cdot \:3+7\cdot \:4&2\cdot \:5+7\cdot \:6\end{pmatrix}[/tex]
On simplifying the matrix C , we get
[tex]C =\begin{pmatrix}-3&-5\\ 34&52\end{pmatrix}[/tex]
Therefore , the value of matrix is [tex]C =\begin{pmatrix}-3&-5\\ 34&52\end{pmatrix}[/tex]
Hence , the matrix multiplication is solved and the results are given
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The coefficient of in the expansion of ( + 3)( - 1) is?
Answer:
-3
Step-by-step explanation:
3 times negative 1 is -3 since a positive times a negative is a negative
hopes this helps
Write a linear function $f$f with f of 0 is equal to 7$f\left(0\right)=7$f(0)=7 and f of 3 is equal to 1$f\left(3\right)=1$f(3)=1 . $f\left(x\right)=$f(x)=
The required linear function is
f(x) = -2x+ 7
What is a function?
A function from A to B is a rule that assigns to each element of A a unique element of B. A is called the domain of the function and B is called the codomain of the function.
There are different operations on functions like addition, subtraction, multiplication, division and composition of functions.
Let the linear function f(x) = ax + b
f(0) = 7
a [tex]\times[/tex] 0 + b = 7
b =7
f(x) = ax + 7
f(3) = 1
3a + 7 = 1
3a = 1 - 7
3a = -6
a = [tex]-\frac{6}{3}[/tex]
a = -2
The given linear function is
f(x) = -2x+ 7
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A 750ml of red wine bottle and has 12% alcohol, 330ml of beer bottle with 5% alcohol. How many bottles of beer do we have to consume in order to be equal in red wine alcohol
Answer: five beers' worth of alcohol in a bottle of wine.
Step-by-step explanation:
In order to have an equivalent amount of alcohol as red wine, we would need to consume approximately 6 bottles of beer.
To determine how many bottles of beer need to be consumed in order to have an equivalent amount of alcohol as red wine, we can compare the alcohol content in both beverages.
The red wine has a volume of 750 ml and an alcohol content of 12%. This means that the red wine contains 750 ml x (12/100) = 90 ml of alcohol.
The beer has a volume of 330 ml and an alcohol content of 5%. This means that each bottle of beer contains 330 ml x (5/100) = 16.5 ml of alcohol.
To find the number of beer bottles needed to match the alcohol content of the red wine, we divide the total amount of alcohol in the red wine by the amount of alcohol in one beer bottle:
The number of beer bottles:
90 ml / 16.5 ml = 5.45
Since we can't have a fraction of a beer bottle, we round up to the nearest whole number.
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Satellites KA-12 and SAL-11 have spotted a UFO. Scientists want to determine its distance from KA-12 so they can later determine its size. The distance between these satellites is 900 km. From KA-12's perspective, the angle between the UFO and SAL-11 is 60∘. From SAL-11's perspective, the angle between the UFO and KA-12 is 75∘. How far is the UFO from KA-12?
The distance between UFO and KA-12 is 1229.7 Km
Given,
Satellites KA-12 and SAL-11 have spotted a UFO.
Distance between Satellites KA-12 and SAL-11 = 900 km
Angle between UFO and SAL-11 = 60°
Angle between UFO and KA-12 = 75°
We have to find the distance between UFO and KA-12;
Here,
Consider as a triangle;
Sum of interior angles of a triangle = 180 degree
So,
The third angle here will be = 180 - 60 + 75 = 180 - 135 = 45°
Now, use sin rule;
x / sin 75 = 900 / sin 45
x = sin 75 × 900 / sin 45
x = 900 × 0.966 / 0.707
x = 869.4 / 0.707
x = 1229.7
That is,
UFO is 1229.7 Km far from KA-12
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Reflect the point0, -9 across they -axis:
The point when reflected across the y-axis is (0, -9)
How to reflect the pointFrom the question, we have the following parameters that can be used in our computation:
Point = (0, -9)
Transformation = Reflect the point across the y-axis:
The rule of reflection across the y-axis is represented as
(x, y) = (-x, y)
Substitute the known values in the above equation, so, we have the following representation
Image = (0, -9)
Hence, the image is (0, -9)
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9. The product of 1000 whole numbers is 1000. What is the
largest possible value the sum of these numbers can have?
A) 1000
B) 1992
C) 1993
D) 1999
Answer:
1000
Step-by-step explanation:
can you plant a tree in early spring when you planted a tree it was_feet tall tree grows at a constant rate every year it grows_feet.
You plant a tree in early spring. When you planted a tree it was 2 feet tall. The tree grows at a constant rate. Every year it grows ⅔ feet.
What is season of spring?The spring season is the season of the year that occurs between winter and summer which is characterized by a gradual increase in temperature.
From the graph given in the diagram above, the X axis represents the number of years while the y axis represents the height of the trees in feet.
From the table, when X is 0; Y is 2. This means that when the tree was planted, it was 2 feet tall.
Also from the table, if after every 3 years the tree = 4 feet which is 2 feet difference from start. It then means that each year would be ;
3 years = 2 feet
1 year = 2/3 feet
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20x-45y=650 solve for x
Answer:
x = 45y + 650/2
Step-by-step explanation:
20x - 45y = 650
20x - 45y + 45y = 650 + 45y
20x = 650 + 45y
20x/20 = (650 + 45y)/2
x = 45y + 650/2
Thus, The value of x is 45y + 650/2
Please help For each of the following problems, answer the 3 questions (show all
a) What angle upstream must the boat be directed?
b) With what speed will the boat cross the river?
c) How long will it take the boat to reach the opposite shore?
1. The boat can travel 3.5 m/s and the river has a flow of 1.9 m/s. The river is 150m wide.
2. The boat can travel 5 m/s and the river has a flow of 3 m/s. The river is 75m wide.
3. The boat can travel 4.2 m/s and the river has a flow of 1 m/s. The river is 125m wide.
4. The boat can travel 8 m/s and the river has a flow of 5.6 m/s. The river is 110m wide.
Answer:
Step-by-step explanation:
the answer is a
Help me out please. Easy points
Answer: 12/15
Step-by-step explanation:
Which of the following points is in the solution set of y < 2x²-3x - 12?
(0,-12) | (4,-4) (0,-15) (3,-3) | (-2,1) (-2,2)
The point [tex]B(1,8)[/tex]is not a solution of the given inequality. Whereas the points [tex]C(-5,10) \text { and } D(3,6) \\[/tex]are the solutions of the given inequality.
What is inequality?
The idea of inequality, which is the state of not being equal, especially in terms of status, rights, and opportunities1, is at the core of social justice theories. However, because it frequently has diverse meanings to different people, it is prone to misunderstanding in public discourse.
It can be found out simply by substituting [tex](x, y)[/tex] values in the given equation
[tex]y < 2 x^2+3 x-5[/tex]
let us start with the point [tex]3(1,8)[/tex]
here [tex]x=1 \text { and } y=8[/tex] therefore [tex]y < 2 x^2+3 x-5[/tex]
[tex]8 < 2\left(1^2\right)+3(1)-5=2+3-5=0[/tex]
that means, [tex]8 < 0[/tex] which is an incorrect inequality, therefore the point
[tex]B(1,8)[/tex] is not a solution of the given inequality.
similarly, for [tex]C(-5,10)[/tex]
[tex]10 < 2(-5)^2+3(-5)-5=50+15-5=60[/tex]
that is [tex]10 < 60[/tex], which is correct.
therefore[tex]C(-5,10)[/tex] is a solution of the given inequality.
next[tex]D(3,6)[/tex]
[tex]6 < 2(3)^2+3(3)-5=18+9-5=22[/tex]
that is[tex]6 < 22[/tex], which is correct . Therefore the point D is a solution of the given inequality.
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Carlos buys 4 cans of dog food and 6 cans of cat food for $12.00. Then the next week, he purchased 2 cans of dog food and 3 cans of cat food for $6.00. Based on this information, will you be able to figure out the price of one can of each type of canned food in the same manner of operating on two equations? Explain your reasoning.
We will not be able to figure out the price of one can of each type of canned food in the same manner of operating on two equations.
This is because the equation are identical.
How to calculate the price?Let the dog food be represented by d.
Let the cat food be represented by c.
Since Carlos buys 4 cans of dog food and 6 cans of cat food for $12.00. This will be:
4d + 6c = 12
This cane b reduced to lowest term as 2d + 3c = 6
Then the next week, he purchased 2 cans of dog food and 3 cans of cat food for $6.00. This will be:
2d + 3c = 6
Since the equations are the same, we can't calculate the price.
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-1+3 (10-12) to the third power divided by -16
Answer:
0.5
Step-by-step explanation:
-1+3(10-12)^3/-16
-1+3(-2)^3/-16
-1+(-24)/-16
.5
A line passes through the points (16, 20) and (10, 14). What is its equation in slope-intercept form?
Answer:
y= x +4
Step-by-step explanation:
2 point form : y -20 = x- 16
slope intercept form: y = x + 4
John earns $500 in a work week. A regular work week for John consists of 5 work days with 8 hours a day. How much does John earn each hour?
Answer:
$12.5
Step-by-step explanation:
500/40 = 12.5
Which equation is true for all the values in the table?
Output
-11
-5
1
7
C
Input
-2
0
2
4
Ay=2x-7
y=x-9
By=x-5
Dy=3x-5
Answer:
D
Step-by-step explanation:
the values in the table are linear and can be expressed in the form
y = mx + c
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 2, - 11) and (x₂, y₂ ) = (4, 7) ← 2 ordered pairs from the table
m = [tex]\frac{7-(-11)}{4-(-2)}[/tex] = [tex]\frac{7+11}{4+2}[/tex] = [tex]\frac{18}{6}[/tex] = 3 , then
y = 3x + c ← is the partial equation
to find c substitute any ordered pair from the table into the partial equation
using (2, 1 ) , then
1 = 6 + c ⇒ c = 1 - 6 = - 5
the equation representing the values in the table is then
y = 3x - 5
An example of civic virtue is
A) doing chores around the house
B) supporting local sports teams
C) attending and graduating from college
D) volunteering for a community program
12=7+15x solve for x
Answer:
x = 1/3
Step-by-step explanation:
12=7+15x
12-7=15x
5=15x
5/15=x
Simplify
x = 1/3
Answer:x=1/3 or x=0.3 I hope this helpful mark me brainlist if correct
Step-by-step explanation:
12=7+15x
Move the variable to the left-hand side and change its sign
12-15x=7
Then move the constant to the right-hand side and change its sign
-15x=7-12
Calculate the difference
-15x=-5
Divide both sides of the equation by -15
x=1/3 or x=0.3
Please help asap, I will mark the brainliest
Hi!
The parrot starts off knowing 60 phrases at time 0.
This is the y intercept, it occurs at x = 0
A point is (x, y)
at 0, the line is equal to 60
the y intercept is (0, 60)
Each night, the parrot learns one bad phrase.
Equation of a line given y intercept and slope is
y = mx + b
y (answer of equation) = m (slope) x(input of equation) + b (y intercept)
Slope is 1 because every time a day passes, it learns a new phrase.
y = 1x + 60
y = x + 60
Hope this helps,
Jeron
Rebekah manages a yoga studio that charges each customer a one-time initial fee of \$35$35dollar sign, 35 and an additional fee of \$12$12dollar sign, 12 per class taken. Rebekah's goal is for each customer to spend at least \$100$100dollar sign, 100 at the studio, and she wants to know the minimum number of classes a customer needs to take to meet that goal. Let ccc represent the number of classes a customer takes. 1) which inequality describes this scenario?.
The required inequality that represents the given situation is 35+12C≥100.
What is inequality?In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to one another.
Both mathematical phrases, equations, and inequalities are created by connecting two expressions.
The equal sign (=) indicates that two expressions in an equation are believed to be equivalent.
The symbols >,<, ≥, ≤ or ≠ indicate that the two expressions in inequality are not always equal.
So, initial payment = $35
$12 in additional fees for each class
The minimum goal is $100.
There are C classes in total.
Minimum target: One-time starting charge + (Additional fee per class) x (Number of classes)
The scenario's inequality is as follows:
35 + 12C ≥ 100
Therefore, the required inequality that represents the given situation is 35+12C≥100.
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Which equation correctly compares the hundreds place and tens place in 5,555? A. 50 ÷ 5 = 10 B. 500 ÷ 50 = 10 C. 500 ÷ 5 = 100 D. 5,000 ÷ 50 = 100
Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:
The answer is B. 500 / 50 = 10
because the first place is the thousands place and the next is hundreds place and then the next is tens place and lastly the next is the ones places
its pretty much in order.
Does (-4, -1) make the inequality 12x + 9y < 1 true?
yes
Submit
no
The answer for this equation is true.
Putting x=-4 and y=-1,
12(-4) + 9(-1) = -48-9= -57 which is smaller than 1.
What is an equation?
In mathematics, an equation is a formula that expresses equality by connecting two expressions with an equal sign. Equations and their cousins in other languages may have subtly different meanings. For example, in French an equation is defined as containing one or more variables, whereas in English any well-formed expression consisting of two expressions joined by an equal sign is an equation.
To solve an equation involving variables, it is necessary to determine which values of the variables make the equation true. The variables for which the equation must be solved are also called unknowns, and the values of the unknowns that satisfy the equation are called the solution of the equation. There are two types of equations: identities and constraints. The ID applies to all values of the variable. Constraint expressions apply only to specific values of variables.
Therefore, The answer for this equation is true.
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4/10 in simplified form
Answer:
2/5
Step-by-step explanation: