Answers
Answer:
30 cm²Step-by-step explanation:
Area of triangle = 1/2 (base × height)
1/2(12*5)=
1/2*60=
30 cm²
Related Questions
in exercises 9-12 assume that 59 births are randomly selected. use subjective judgment to describe the given number of girls as a) significantly low, b) significantly high or c) neither significantly low nor high.
9. 47 girls.
10. 26 girls.
11. 23 girls.
12. 5 girls.
Answers
10. Neither significantly high nor significantly low
11. Neither significantly high nor significantly low
12. Significantly low
help meeeeeee
Write the verbal sentence as an equation or an inequality:
Four is greater than six times a number t.
Answers
Answer:
four is greater than six times a number t in an inequality sentence is 4 › 6 * t
Find the sum. 2 3/6 + 4 1/6
Answers
Answer:
6 4/6
Explanation:
To sum 2 3/6 and 4 1/6, we first need to convert the mixed numbers to fractions as follows
[tex]\begin{gathered} 2\frac{3}{6}=\frac{(2\times6)+3}{6}=\frac{12+3}{6}=\frac{15}{6} \\ 4\frac{1}{6}=\frac{(4\times6)+1}{6}=\frac{24+1}{6}=\frac{25}{6} \end{gathered}[/tex]Now, we can add the numbers as
[tex]\frac{15}{6}+\frac{25}{6}=\frac{15+25}{6}=\frac{40}{6}[/tex]Finally, when we divide 40 by 6, we get 6 as a quotient and 4 as a remainder, so 40/6 is equivalent to
[tex]6\frac{4}{6}[/tex]Therefore, the answer is 6 4/6
PLEASE CAN SOMEONE HELP ME PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Fill in the gap in the equation below by
completing the square.
2
x² +14x+55= (x + 7)² +
Answers
The correct value of the equation that's illustrated will be x² + 14x + 55= (x + 7)² + 6
How to illustrate the information?It should be noted that an equation can be used in order to show the relationship between the variables.
It should be noted that (x + 7)² will be:
= (x + 7)(x + 7)
= x² + 7x + 7x + 49
= x² + 14x + 49
Therefore, x² 14x + 55 - (x² + 14x + 49) = 6
In conclusion, the answer in the box is 6.
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Find the slope of the line:
Answers
Answer:
20
Step-by-step explanation:
Slope = (y2-y1)/(x2-x1)
Choose any two points on the line. For this, I will use (0, 5) and (1, 25):
[tex]\frac{25-5}{1-0}=\frac{20}{1} = 20[/tex]
Find the equation of the line passing through points (6,0) and (-1,14).
Oy = 6x
y = -2x + 12
y = -2x + 14
y = 2x + 10
Answers
Answer:
y = - 2x + 12
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (6, 0 ) and (x₂, y₂ ) = (- 1, 14 )
m = [tex]\frac{14-0}{-1-6}[/tex] = [tex]\frac{14}{-7}[/tex] = - 2 , then
y = - 2x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (6, 0 )
0 = - 12 + c ⇒ c = 0 + 12 = 12
y = - 2x + 12 ← equation of line
2. Let S = R - {0}, with the wacky definitions of vector addition and scalar multiplication given below.
Verify or disprove that S is a Vector Space.
For x, y in S, the definition:
Vector Addition: x + y = xy
• Scalar Multiplication: c*x = x^C.
(ie. 2+5= 2*5 = 10)
Hint: First identify the additive identity
Answers
A vector space, also known as a linear space, is a set whose elements, frequently termed vectors, can be added to and multiplied ("scaled") by figures known as scalars. Real numbers make up scalars most of the time, but they can also be complex numbers or, more broadly, components of any field.
Varied SpacesEvery vector space has a scalar field F at its foundation (to be specified shortly).
Real and complex numbers are two examples of scalar fields.
Real numbers R:
C: Complex numbers.
We only utilize these fields in this context.
Definition : A group of objects in a vector space V have a (vector)
scalar multiplication defined as closed under both addition and multiplication
also satisfying the following axioms:
I For any x V and, F, ( + )x = x + x
(ii) α(βx)=(αβ)x
(iii) For all x, y V, x + y = y + x
(iv) For any x, y, and z > V, x + (y + z)=(x + y) + z.
(v) α(x + y) = αx + αy
(vi) O V z 0 + x = x, where 0 is commonly referred to as the origin
Since V cannot be left using vector addition or scalar multiplication, the "closed" criterion described above states that for any, F and x, y V x + y V. Additionally, the "+" is in the field when we write for, F and x V ( + )x, but it is in the vector space when we write for x + y for x, y V. This symbol has a variety of uses.
Examples.(1) R2 is equal to the two-dimensional space (a1, a2) | a1, a2 R.
(2) In an n-dimensional space, Rn = (a1, a2,..., an) | a1, a2,..., an.
An "n-tuple" is (a1, a2,...,an).
(3) C, the field of complex numbers, to C2 and Cn, respectively, to R2 and Rn.
Pn = l n j = 0 ajxj | a0,
The polynomial space of all polynomials of degree n is denoted as Pn = l n j=0 ajxj | a0, a1,...,an R M. Be aware that this covers polynomials of all degrees, not only those with n degrees exactly.
(5) fp = (ai,...) | ai p, |ai| R. Vectors in the form of infinite-tuples of numbers make up this space. To properly designate the field, we would write fp(R) or fp(C).
Trigonometric polynomials TN = F N n=1 a sin nx | a1,...,an R k are included in the list.
Typical vecs in Rn e1 = (1, 0,... , 0)
e2 = (0, 1, 0,... , 0) (0, 1, 0,... , 0)
e3 = (0, 0, 1, 0,... , 0) (0, 0, 1, 0,... , 0)
.\s.\s.\sen = (0, 0,... , 0, 1) (0, 0,... , 0, 1)
The unit vectors that point in the n orthogonal directions are those.
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(a) Give an example of an angle which is coterminal with 260°.
(b) State the reference angle associated with 260°.
(b) Convert 260° to radians. Leave the answer in terms of
π .
Answers
a) 620° is an angle coterminal to 360°. The reference angle associated with 260° is 260°.
b) The measure of 260° in radian system equals to 13π / 9 radians.
How to analyze coterminal angles
Two angles are coterminal when they share the same initial and terminal sides. Two consecutive coterminal angles have a difference of 360° (2π radians). Then, we can find any angle of a family of coterminal angles by using this formula:
θ' = θ + i · 360°
Where:
θ - Reference angle, in degrees.i - Angle index.a) If we know that θ = 260° and i = 1, then the measure of an example of coterminal angle is:
θ' = 260° + 1 · 360°
θ' = 620°
620° is an angle coterminal to 360°.
The reference angle is the angle whose measure is equal to or greater than 0° and equal to or less than 360°. Thus, the reference angle associated with 260° is 260°.
b) According to radian system, 2π radians are equal to 360°. Thus, the measure of 260° is found by the following simple rule of three:
x = 260° × 2π / 360°
x = 13π / 9 rad
The measure of 260° in radian system equals to 13π / 9 radians.
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Think about your answers to these questions. Then write a summary of your findings below.1. How do you decide which of two numbers is greater when...a. both numbers are positive?b. both numbers are negative?c. one number is positive and one number is negative?
Answers
1. a)
Given:
Both numbers are positive.
Aim:
We need to find which one of the two numbers is greater than the other.
Explanation:
On a number line, numbers always increase so numbers to the right are greater than numbers to the left.
Mark the given points on the number line and find which number is right of another. numbers to the right are greater than numbers to the left.
For example.
The positive numbers are 17 and 20.
20 to the right are greater than 17 to the left
20 is greater than 17.
1. b)
Given:
Both numbers are negative.
Aim:
We need to find which one of the two numbers is greater than the other.
Explanation:
On a number line, numbers always increase so numbers to the right are greater than numbers to the left.
If both numbers are negative, the number closer to zero is the bigger number.
For example.
The negative numbers are -10 and -5.
-5 is closer to zero.
-5 is greater than -10.
1, c).
Given:
one number is positive and one number is negative
Aim:
We need to find which one of the two numbers is greater than the other.
Explanation:
On a number line, numbers always increase so numbers to the right are greater than numbers to the left.
The positive numbers are always to the right are greater than the negative numbers to the left.
Positive numbers are greater than negative numbers.
For example.
The positive number is 5 and the negative number is -8.
5 is greater than -8.
Use your calculator on the following data X1=3, Y1=7, X2=4, Y2=8, X3=5, Y3=10.
Determine (1) correlation, (2) slope of the regression line, (3) y-intercept of the regression line:
Answers
From the given data-set, we have that:
The correlation coefficient is of: r = 0.982.The slope of the regression line is of: 1.5.The intercept of the regression line is of: 2.33. How to find the equation of linear regression?To find the regression equation, also called line of best fit or least squares regression equation, we need to insert the points (x,y) in the calculator. These points are given on a table or in a scatter plot in the problem.
To find the correlation coefficient, we find the same strategy, inserting these points into a calculator of correlation coefficients.
From the data, the points are given as follows:
(3, 7), (4, 8), (5, 10).
Hence the correlation coefficient is of:
r = 0.982.
The line of best-fit is given by:
y = 1.5x + 2.33.
Which has a slope of 1.5 and an intercept of 2.33.
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Use the rate and the amount of water pumped after 13 minutes to find how much will have been pumped into pool after 14.5 minutes? The unit rate is 24 gal/min so 1.5 minutes after 13 minutes, an additional gallons will be pumped in
Answers
An additional 36 gallons of water will be pumped into the pool past 13 minutes
Constant rate of flow: The definition of a constant rate of flow rate shows how fluid of a certain volume moves through a segment in a specified amount of time. Instead of measuring how quickly a fluid moves from point A to point B, the motion of fluids is examined by figuring out its flow rate. Specifically, how much fluid volume moves from point A to point B in a given amount of time.
Time for which water has been pumped into the pool = 13 minutes
Rate of flow of water = 24 gal/min
So, water pumped in 1.5 minutes = 24*1.5 = 36 gallons
Total water pumped in the pool in 14.5 minutes = 24*14.5 = 348 gallons
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A wheel on Amanda's bicycle is 0.3 m in diameter. Amanda races the bicycle for 35 m. How many times does the wheel turn as the bicycle travels this distance?
Use the value 3.14 for π. Round your answer to the nearest tenth. Do not round any intermediate steps.
Answers
Answer: 37.2
Step-by-step explanation:
The circumference of the bike is [tex]0.3\pi \approx 0.3(3.14)=0.942[/tex] m.
Dividing this by the 35 m traveled, we get the bike turned [tex]\frac{35}{0.942} \approx 37.2[/tex]
the volume of a volleyball is 288 cubic inches. What is the radius of the volleyball, to the nearest tenth of an inch?
Answers
The radius of the volleyball to the nearest tenth of an inch is 8.3
How to calculate the radius of the volleyball ?The formula is
= √ 3v/4π
volume(v) = 288
π = 3.142
= √ 3×288/4×3.142
= √ 864/12.6
Next step is to get the square root of 68.6
= √ 68.6
= 8.29
Hence the radius of the volley ball is 8.3 inches
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Write the following expression using a single exponent. 7^(4))^(3) x7^(7)
Answers
Answer:
7⁷¹
Step-by-step explanation:
Let's do it this way
7⁴^³ × 7⁷
Let's firstly apply indices since the base is the same
7⁴^³+ (⁷)
(4³ = 4×4×4 can be rewrite)
7⁴×⁴×⁴ + ⁷
7⁶⁴+⁷
= 7⁷¹
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Answer:
Raise 7 to the power of 4
Step-by-step explanation:
2401
What are the coordinates of the point that lies of the way along directed line segment AB with A(2,5) and B(14,9)?
Answers
1/4 of the distance between points A(2,5) and B(14,9) is given by the formula:
[tex]\begin{gathered} \frac{1}{4}AB=\frac{1}{4}\sqrt[]{(x_2-x_1)^2+(y_2}-y_1)^2 \\ \frac{1}{4}AB=\frac{1}{4}\sqrt[]{(14-2)^2+(9-5)^2} \\ \frac{1}{4}AB=\frac{1}{4}\sqrt[]{12^2+4^2}\text{ = }\frac{1}{4}\sqrt[]{144+16} \\ \frac{1}{4}AB=\frac{1}{4}\text{ }\sqrt[]{160}=\frac{1}{4}\times12.649=3.162 \end{gathered}[/tex]On a piece of paper, graph y ≥ 2x – 3. Then determine which answer choice matches the graph you drew.
Answers
Answer:
Step-by-step explanation:
We are asked to graph an inequality . y≥2x - 3
The boundary line of our given inequality will be a solid line as we have greater than or equal to ≥ sign.
The boundary line of our given inequality would be .y=2x - 3
Now, we will test point (0,0) to shade in the correct region as:
0≥2(0)-3
0≥0-3
0≥-3
It should look something like this:
Please answer quick and i’ll transfer you money please quick
A bank account gathers compound interest at a
rate of 5% each year.
Another bank account gathers the same amount of
money in interest by the end of each year, but
gathers compound interest each month.
If Cameron puts £4200 into the account which
gathers interest each month, how much money
would be in his account after 2 years and
7 months?
Give your answer in pounds to the nearest 1p.
Answers
Based on the compound interest rate on the bank account and the number of months that Cameron invested the amount for, the money in his account will be £4,777.81
What amount will be in the account?The amount that will be in the account after 2 years and 7 months can be found by the formula:
= Amount invested x ( 1 + periodic rate) ^ number of periods
The number of months (periods) is:
= 2 years + 7 months
= 31 months
The periodic rate is:
= 5% / 12 months a year
= 5/12%
The amount that Cameron will have in his bank account after 2 years and 7 months will be:
= 4,200 x (1 + 5/12%)³¹
= £4,777.81
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Please help me with all I’ll mark you brainly
Answers
Answer:
am pretty sure am correct i hope it helps you
10+30b=-20
30b=-30
B=-1
PLEASE HURRY!
Write the following expression using the fewest possible terms.
(−4x − 15) + (17 + 7x)
3x + (−2)
3x + 2
11x + (−2)
11x + 32
Answers
The simplified expression of (−4x − 15) + (17 + 7x) is - 11x + 2.
How to simplify expression?The expression can be simplified as follows:
(−4x − 15) + (17 + 7x)
we have to open the brackets of the expression
(−4x − 15) + (17 + 7x)
−4x − 15 + 17 + 7x
Combine like terms
−4x − 15 + 17 + 7x
- 4x + 7x - 15 + 17
Do the arithmetic of the like terms
- 4x + 7x - 15 + 17
Therefore, the simplified expression is as follows:
- 11x + 2
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Answer: 3x+2
Ex:
(-4x-15)+(17+7x)
-4x-15+17+7x Remove unnecessary parentheses
3x-15+17 Add like terms
3x+2
There are 5 more girls than boys in MS, Rabu's class of 31 students, What is the ratio of number of girls to the number of boys in her class?
Answers
Answer: The answer is 18 Girls and 13 Boys. (18 + 13 = 31)
The ratio for girls to boys would 18:13
Step-by-step explanation: Confirmed correct.
28 / 2 (# of genders in class) = 14 which is the # of boys in class
14 + 5 = 19 which is the # of girls in the class
Therefore the ratio of # of girls to the # of boys is:
19:14
I will give brainliest, like and rating if u solve this right
Which of the following statements is not true?
Answers
Answer:
Answer C
This statement is not true
Step-by-step explanation:
Logarithms result in real values only for positive values of the argument i.e. log(x) results in a real value only for x > 0 So A is correct
Range is set of all real numbers -∞ < x < ∞ So B is correct
D is also correct. At x = 0, log is not defined
Only C is incorrect. If 0 < a < 1 the graph actually shows a downward trend ie logarithmic decline instead of growth
Convert the measurement as indicated.
11 ft=_yd_ft
Answers
Answer:
3 yards, 2 feet
Step-by-step explanation:
Convert the measurement as indicated. 11 ft=_yd_ft
There are 3 feet in a yard so 3 yards (equal to 9 feet) and a remainder of 2 feet equal 11 feet so:
11 feet = 3 yards, 2 feet
A system of inequalities is shown.Which system is represented in the graph? y > –x2 – x + 1y < 2x2 + 3 y ≤ x2 – x + 1y < 2x2 + 3 y ≥ x2 – x + 1y ≤ 2x2 + 3 y ≥ –x2 – x + 1y > 2x2 + 3
Answers
The system of inequatilies that is represented in the graph is:
y ≥ –x² – x + 1
y > 2x² + 3
We can confirm this statement since the first equation implies that the system doesn't include any point bellow the parabola y = -x² - x + 1, and the second equation implies that the system must include only points above the parabola y = 2x² + 3
If ABC is reflected across the z-axis to get the AA'B'C', what is the y-coordinate of C'? Enter the answer in the box.
Answers
The horizontal and vertical axes are the two axes of the coordinate plane.
The origin is the location where these two axes come together. What is the y-coordinate of C' if ABC is mirrored across the z-axis to produce AA'B'C'?
Answer :
(-3,2)
Detailed explanation:
The right response is C (-3,2). The bold line moving up and down in the middle of the page is the y axis. If you could take up the triangle and turn it on its side, you could. In Point C's landing zone (-3,2).
Point C is situated two spaces to the right of the y-axis, as you can also see. The x axis is still three spaces below it.
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40 POINTS!
1. Find the missing angle.
2. What is the measure of Angle 1?
3. What is the measure of Angle 2?
4. Can the measure of an exterior angle of a triangle ever equal the measure of its adjacent interior angle? Explain in 2-3 sentences.
Answers
Answer:
43 for the first one
Step-by-step explanation:
108+29=
43
Find the zeros of each function by using a graph and a table f(x)=x^2+3x-18.
Answers
1) Finding the zeros of this function f(x) =x² +3x -18
f(x) = x²+3x-18 Factoring this equation, and rewriting it
Which two numbers whose sum is equal to 3 and their product is equal to 18?
6 -3 = 3 and 6 *-3 = -18
So we can rewrite as (x +6) (x-3)
(x+6)(x-3)=0 Applying the Zero product rule, to find the roots
x+6=0,
x=-6
x-3=0,
x=3
S={3,-6}
2) Setting a table, plugging in the values of x into the factored form: (x-6)(x-3)
x | y |
1 | -14 (1 +6)(1-3) =-14
2 | -8 (2 +6)(2-3) =-8
3 | 0
4 | 10
-5 | -8
-6 | 0
3) Plotting the function:
Fully factorise w² - 144
Answers
Answer:
(w-12)(w+12)
Step-by-step explanation:
Using the identity
a^2-b^2=(a-b)(a+b)
now,
w^2-144=(w)^2-(12)^2=(w-12)(w+12)
Need help with this
Answers
Given:
You have $1000 to invest a year and have an account earning 4% compound continuously.
Required:
How much money will you have at the end of the year.
Explanation:
We know the formula for continuously compound interest is
[tex]P(t)=P_0e^{rt}[/tex]Here,
[tex]\begin{gathered} P(t)=\text{ Value at time t} \\ P_0=\text{ Original principal sum} \\ r=\text{ annual interest rate} \\ t=\text{ Length of time the interest is applied } \end{gathered}[/tex]We have initial amount $1000, annual interest rate 4% and length of time 1 year
.
Now,
[tex]\begin{gathered} P(t)=1000\times e^{0.04\times1} \\ P(t)=1040.81 \end{gathered}[/tex]Answer:
So, $1040.81 money will have at the end of the year.
I have to find out at which points the lines intersectY= .5x+3 & Y= 2x-9
Answers
SOLUTION
We want to find out at which points the lines
[tex]\begin{gathered} y=0.5x+3\text{ and } \\ y=2x-9 \end{gathered}[/tex]intersect.
To do this, we have to solve the equations simultaneously and look for the values of x and y.
This becomes
[tex]\begin{gathered} y=0.5x+3\ldots\ldots\ldots\text{.}\mathrm{}eq\text{ 1} \\ y=2x-9\ldots\ldots\ldots\ldots\text{.}\mathrm{}eq\text{ 2} \\ \text{subtracting equation 2 from 1, we have } \\ y-y=(0.5x-2x)+(3-(-9) \\ 0=-1.5x+(3+9) \\ 1.5x=(3+9) \\ 1.5x=12 \end{gathered}[/tex]Dividing both sides by 1.5, we get x, this becomes
[tex]\begin{gathered} \frac{1.5x}{1.5}=\frac{12}{1.5} \\ x=8 \end{gathered}[/tex]To get y, we substitute the x for 8 into equation 1 or 2. Let us use equation 1, we have
[tex]undefined[/tex]About 2% of the population has a particular genetic mutation. 500 people are randomly selected.
Find the standard deviation for the number of people with the genetic mutation in such groups of 500
Answers
The standard deviation for the number of people with the genetic mutation in such groups is 3.1305.
Standard DeviationIn statistics, 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.
Let X be the number of people with genetic mutation is a group of 500,
The formula of standard deviation is given as
[tex]SD=\sqrt{n*p(1-p)} \\SD=\sqrt{500*0.02*0.98} \\SD=3.1305[/tex]
The standard deviation of the given sample is 3.1305
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