Mathematics High School

Please help on these

Answers

Answer 1

Answer:

x should be 11

Step-by-step explanation:

What we know:

The angles shown are 13x + 12, and 2x + 3

The two angles are complementary, which means they equal 180 degrees.

(13x + 12) + (2x + 3) = 180

15x + 15 = 180

15x = 180 - 15

15x = 165

x = 11

Related Questions

For smart ppl in math.

Answers

Answer:

It's all explained below :)

Step-by-step explanation:

So first we need to go to a graphing calculator! I usually use Desmos to do my stats stuff. You'll wanna head to their linear regression calculator (I can't add a link, but just google Desmos linear regresion and it'll pop up).

Put the points into the table. Lines of best fit have the equation y1 ~ bx1+a, so put that in the box right below the table, where you see another equation already written- just edit it. We see all the other numbers listed below that, so we know that b=-0.894 and a=13.599, so the line of best fit is -0.9x + 13.6 = y when you round those numbers.

The correlation coefficient is represented by the letter r. r is shown below as well, and is -0.964. Strong correlations are represented by a value close to the number 1, so this is strong, as it's very close. It is negative because of its sign. Correlation coefficients don't go over the number 1 or below -1, so be careful. I hope this was helpful! If you need any more clarification just let me know.

Pentagon JKLMN is similar to pentagon UVWXY.
What is the length of WX?
18
15
10
N
(not drawn to scale)
A 15
13
12
O 18

Answers

9514 1404 393

Answer:

C. 12

Step-by-step explanation:

Corresponding sides are proportional. Sides with the same mark are the same length.

WX/XY = LM/MN = LM/KJ

WX/10 = 18/15

WX = 180/15 . . . . multiply by 10

WX = 12

What is the domain and range of the equation y = 6/(x+2) + 4?

Answers:

Real numbers except x = -2 and Real numbers except y = 6

Real numbers except x = 2 and Real numbers except y = 4

Real numbers except x = -2 and Real numbers except y = 4

Answers

Answer:

.2 sdfgghh 45

Step-by-step explanation:

If cos O =-2/5 and tan O > 0 what is the value of sin O

Answers

Answer:

negative square root 21 over 5.

Step-by-step explanation:

mathGiven that for an angle ,

We are to find the value of

We know that

Cosine is negative in Quadrant II and Quadrant III.

Tangent is positive in Quadrant 1 and Quadrant III.

So, the given angle lies in the Quadrant III.

We will be using the following trigonometric identity:

We have

Since the angle lies in Quadrant III and sine is negative in that quadrant, so

Thus, option (B) is correct.

On god I will mark you as brainliest

Answers

SAS = equal triangle
x - 4 = 19
Solve the equation
Solution: x = 23

∆ABC has vertices at A(12, 8), B(4, 8), and C(4, 14). ∆XYZ has vertices at X(6, 6), Y(4, 12), and Z(10, 14). ∆MNO has vertices at M(4, 16), N(4, 8), and O(-2, 8). ∆JKL has vertices at J(14, -2), K(12, 2), and L(20, 4).

Answers

Answer:

First is ABC and MNO, second is rotation I believe.

Step-by-step explanation:

TWENTY PIONTS!!!!! what completes the prime factorization of 315

Answers

Answer:

Positive Integer factors of 315 = 3, 9, 5, 45, 7, 315 divided by 3, 3, 5, 7, gives no remainder. Step-by-step explanation:

The regression equation for change in temperature, y, to amount of rain, r, is given by ŷ = 0.2 − 1.4r. On Monday, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees. Find and interpret the residual.

2.66. The regression line overpredicts the temperature change.
2.66. The regression line underpredicts the temperature change.
1.94. The regression line underpredicts the temperature change.
−1.94. The regression line overpredicts the temperature change.
−3.02. The regression line underpredicts the temperature change.

Answers

Given:

The regression equation for change in temperature, y, to amount of rain, r, is given by

[tex]\hat{y}=0.2-1.4r[/tex]

The observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.

To find:

The residual and interpret it.

Solution:

According to the question, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.

So, the actual value is 2.3 degrees.

Put r=0.4 in the given equation, to find the predicted value.

[tex]\hat{y}=0.2-1.4(0.4)[/tex]

[tex]\hat{y}=0.2-0.56[/tex]

[tex]\hat{y}=-0.36[/tex]

We know that,

Residual = Actual value - Predicted value

[tex]Residual=2.3-(-0.36)[/tex]

[tex]Residual=2.3+0.36[/tex]

[tex]Residual=2.66[/tex]

Residual is positive because predicated value is less than the actual value.

So, the regression line underpredicts the temperature change.

Therefore, the correct option is B.

The Jones family was one of the first to come to the US. They had 5 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:

a)at least 2 girls

b)at most 4 girls

Answers

I’d say it’s A because I just do

What is the product of twenty hundredths and sixty-five thousandths

Answers

Answer:

0.013

Step-by-step explanation:

The product of twenty hundredths and sixty-five thousandths is 0.013.

Given that, the product of twenty hundredths and sixty-five thousandths.

What is the product of two fractions?

The product of two fractions is the product of the numerators and the product of the denominators.

Product of two fractions = Product of their denominators / Product of their numerators.

Twenty hundredths = 20/100

Sixty-five thousandths = 65/1000

Product = 20/100 × 65/1000

= 2/10 × 65/1000

= 130/10000

= 13/1000

= 0.013

Therefore, the product of twenty hundredths and sixty-five thousandths is 0.013.

To learn more about the product of two fractions visit:

https://brainly.com/question/7335118.

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Holly has $225 to spend at the shopping mall. She decides to buy sweaaters and pants with her money. Sweaters cost $45 each and pants cost $25 each. The equation 45s + 25p = 225 represents this situation.

If Holly buys 3 sweaters, what is the greatest number of pants she can buy?

Answers

Answer:

3 pairs of pants

Step-by-step explanation:

Plug 3 in for s. Your equation should now be 45(3) +25p=225

Then distribute 135+25p=225

Subtract 25p=90

Divide p=3.6

Since you cannot buy half of a pair of pants you need to round down to three

Simplify the expression: 6/3(13−18)+2^4÷6

Answers

Answer:

-7.333

Step-by-step explanation:

Answer:

-7 1/3

Step-by-step explanation:

WILL GIVE BRAINLIEST

Which of the following is the function rule for the graph of the sin function from 0 to 2pi if the amplitude is 1.5 and the period is (pi/2)?
A. 1.5sin(pi /4)x
B. 1.5sin2x
C. 1.5sin4x

please help fast, will give brainliest

Answers

Answer:

1.5sin4x

Step-by-step explanation:

I just answered this question and got it right.

The function is 1.5sin(4x).

What is sin function?

The ratio of the length of the opposite side to that of the hypotenuse in a right-angled triangle is the sine function in trigonometry. A right triangle's sides or unknown angles can be found using the sine function.

Given the sine function from (0, 2π), and amplitude is 1.5, the period is π/2

sine function in general form

y = a sin (b (x – h)) + d

where a = amplitude, b= period

h is the phase shift, and

d is the vertical displacement.

according to question, This function currently has no phase shift, since

h = 0, and no vertical displacement, since d = 0

equation is y = a sin b x

and b is ratio of normal period to desired period

b = 2π/(π/2)

b = 4

substitute the value of a and b in equation we get,

y = 1.5 sin (4x)

Hence the sin function from 0 to 2pi is y = 1.5 sin (4x).

Learn More about sin function;

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2x + 8 = 2(x + 4)
(Variables Vanish)
show stepss! due in 5 min!<3

Answers

Answer:

Step-by-step explanation:

2x+8=2(x+4)

2x+8=2x +8

2x-2x=8-8

0=0

What's the answer
BchbhbdbhdjbcdjcnjcjndJncjjj

Answers

Answer: 1,3,6

Explanation:

i need help with some unanswerd Qs on my profile

Answers

Answer:

I will help

Step-by-step explanation:

Answer:

i can help you

Step-by-step explanation:

what do you need done

write a paragraph about the activites that you mostly do in holidays

Answers

Some things i do over the holidays,
Are spending time with my family and friends. During Christmas time i help my family cook a meal a wrap presents, Any other time i would usually just go out of state and/ or spend time with friends. Something i also enjoy doing is going shopping and finding new things.

THIRTY POINTS Will mark branliest if right.

Which expression is equal to the expression below?
(2 x 6)^4

A. 2^4 x 6^4
B. 8^4
C. 4 x (2 x 6)
D. 2 x (6)^4

Answers

Answer:A

Step-by-step explanation:A

Find the slope of the line. Enter your answer as
a number, fraction, or undefined. Reduce to
lowest terms if necessary.

Answers

Answer:

slope is 2/4 or 1/2 simplified

Step-by-step explanation:

Answer: 1/2

Step-by-step explanation:

a number is 2/3 of another number. if the sum of the two numbers is 30, find the smaller number.

Answers

Answer: The numbers are 4 and 6.

Step-by-step explanation:

Let one number be represented as

and the other as

According to the problem:

and

From the second equation we get:

∴

−

(subtracting

from both sides)

Replacing the value of

in the first equation we get:

(

−

)

Multiplying both sides by

we get:

(

−

)

Opening the brackets and simplifying we get:

−

Add

to both sides.

Divide both sides by

Since from the second equation we have:

substituting

with

we get:

Subtract

from both sides.

Answer: The smaller number is 12.

Step-by-step explanation:

Just took the test

What is the slope of the graph?

Answers

1
1/1
Or 1
Rise 1
Run 1

The slope is 1. It’s positive so it goes upwards

Donavon and Joshua are both weight lifting to gain weight. Donavan weighs 120 lbs and he gaining 10 lbs each month and Joshua weighs 150
Ibs and is gaining 4 lbs each month. How many months will it take for Donavan to weigh the same as Joshua?

Answers

Answer:

4 months

Step-by-step explanation:

Yall know the rate of change?

Answers

Answer:

M=-3

Step-by-step explanation:

Slope:

y2-y1/x2-x1

-3-3/1+1=6/-2=-3

Please helppp wil mark brainliest

Answers

Answer:

2,3

Step-by-step explanation:

PLEASE I NEED HELP!! what are two ways that you can tell that two ratios form a proportion? i really need to pass this test to get my grades up, I'm not trying to cry my whole winter break.

Answers

Answer:

A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."

Step-by-step explanation:

Answer:

A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fraction in it’s simplest form. Another way is to see if the numbers in the ratios are factors or multiples of each other. For example, 10:5 and 30:15. 10:15= 10/5 and 30:15= 30/15. Then you put it in simple form. 10/5 = 2 and

30/15 = 2. Therefore 10:5 and 30:15 are proportional.

Hope this helps :)

find the slope of this line

Answers

Answer:

slope is 1

Step-by-step explanation:

0--2=2

1--1=2

2/2-1

Write an expression and solve. Cole wants to buy a shirt for $25. The sales tax
is 8%. How much will the shirt cost?
Show your work:
A. $27
B. $33
C. $45
D. $227

Answers

Answer:

Step-by-step explanation:

8% of 25 is 2 so 25 + 2 =27

It’s A. I’m pretty sure!

Nathan rolls a number cube and records the result of each roll in the table.

Number Cube
Number Rolled
Frequency
1
11
2
16
3
14
4
20
5
12
6
17

Which statements below represent the situation? Selet three options.
The relative frequency of rolling a 4 is StartFraction 2 over 9 EndFraction.
The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3.
The experimental probability of rolling a 2 is greater than the theoretical probability of rolling a 2.
The relative frequency of rolling a 5 is StartFraction 2 over 13 EndFraction.
The experimental probability of rolling a 1 is less than the experimental probability of rolling a 6.

Answers

The relative frequency of rolling a 4 will be 2/9. Then the correct option is A.

How to find the relative frequency?

Relative frequency is the ratio of the considered subgroup's count to the total count.

Nathan rolls a number cube and records the result of each roll in the table.

Number Rolled Frequency

1 11

2 16

3 14

4 20

5 12

6 17

Total = 90

Then the relative frequency of rolling a 4 will be

P = 20 / 90

P = 2/9

Then the correct option is A.

Learn more about conditional relative frequency here:

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Answer:

its A, C, D

Step-by-step explanation:

tested for really

WILL GIVE BRAINLIEST

Answers

Answer:

the answer is A

Step-by-step explanation:

WHY DO I FEEL EXTRA NICE- FFTVJHFTYSDEV

Answers

Answer:

cause u are nice

Step-by-step explanation:

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