Mathematics High School

Mhanifa can you please help?

Answers

Answer 1

Answer:

Question 5

Sum of angles of a regular polygon is 360°

If one angle is 8°, then number of sides is:

360°/8° = 45Question 4

Sum of interior angles of a polygon with n sides:

180°(n - 2) = 5400°n - 2 = 30n = 32

Exterior angle measure is:

360°/32 = 11.25°Question 13

Sum of exterior angles is 360°

Each exterior angle is:

360°/16 = 22.5°

Related Questions

Convert the following fractions into mixed numbers: 43/4

Answers

Answer:

10 3/4

Step-by-step explanation:

Use a calculator

Hope this helps! :)

Answer:

Step-by-step explanation:

mixed fraction 43 - (4 x 10) = 3

Help me with this easy math question, please. I don't understand it, but it's said to be simple. Please and thank you in advance.

Answers

Answer:

$850.50

Step-by-step explanation:

Once you find the square footage of the triangle, that being 486 sq ft, you multiply by 1.75, the cost of the deck per sq ft, you get $850.50

Which of the following expressions is equivalent to −56−13?Select all that apply.

Answers

So -56 -13 = -69
So the answer would be 69?
You didn’t show the options.

whats the answer to this?

Answers

Answer:

6cm

Step-by-step explanation:

I will apply equivalent fractions here or enlargement is also allowed

let find the factor,k

3/0.25=k

12=k

to get x

x/0.5=12

x=12*0.5

x=6cm

I need a step-by step explination on how to solve this problem. I really need some help!

Answers

Answer:$120

Step-by-step explanation:

85% of x= $107.27

.85x=107.27

Divide both sides by .85

X=126.20

Subtract the binder$6.20

What is the square root of 6 - the square root of 20.

Please answer fast!

Answers

Square root of 6 - the square root of 20 is -2.02264621222

100 Points Please Help

Compare and contrast a triangular prism and a triangular pyramid. In your response, include the shape and number of bases, and the shape and number of lateral faces.

Answers

Answer:

The Sample Response: Both figures have triangle-shaped bases. The prism has 2 bases, but the pyramid has only 1 base. Both figures have 3 lateral faces, but the lateral faces of the prism are rectangles, whereas the lateral faces of the pyramid are triangles. The sides of the pyramid meet at a point.

Or Other Response: The bases of both statues are triangle-shaped. The pyramid has only one base, but the prism has two. Both forms have three lateral faces, but the prism's lateral faces are rectangles, whilst the pyramid's lateral faces are triangles.

Step-by-step explanation:

I did this on edge

Aubree recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 9
Bass 12
Drums 4
Keyboard 7
Eighth Grade Students
Instrument # of Students
Guitar 12
Bass 14
Drums 5
Keyboard 8

Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than drums as a percent to the nearest whole number.

Answers

Answer:

88%

Step-by-step explanation:

probability of 7th grader playing other instruments apart from drum = total number of students not playing drum / population of the 7th grade class

total number of students not playing drum = 9 + 12 + 7 = 28

population of the 7th grade class = 28 + 4 = 32

28/32 = 0.875

to express in percentage multiply by 1000 = 87.5%

To round off to the nearest whole number, look at the first number after the decimal, if it is less than 5, add zero to the units term, If it is equal or greater than 5, add 1 to the units term.

88%

In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students
who do not have any siblings. What is the probability that a student who has a sister
also has a brother?

Answers

Answer: 6/8 or 3/4 or 0.75

Step-by-step explanation:

If S is the midpoint of RT, RS=5x+17, and ST=8x-31, find RS

Answers

A midpoint divides a line into two equal parts so
5x+17=8x-31
17=3x-31
3x=48
x=16

RS=5x(16)+17
80+17=97
RS=97

How many cubic feet are in one cubic yard?
3
9
27

Answers

Answer:

Step-by-step explanation:

Ayden invested $560 in an account in the year 1990, and the value has been growing exponentially at a constant rate. The value of the account reached $700 in the year 1994. Determine the value of the account, to the nearest dollar, in the year 2002.

Answers

I'm not sure but I think is 1,00

This is the final one please help me

Answers

Answer:

If all the sides of the triangle are different, its scalene or else it could ne obtuse not sureee

solve for x ?
3(x - 2) = 18

Answers

Answer:

X=8

Step-by-step explanation:

3x-6=18

3x=18+6

3x=24

X=24÷3

X=8

Answer:

x=2

Step-by-step explanation:

,...................

Please help me with these two questions

Answers

For the first question- D
The y-intercept tells us how much money is already in Sanjay’s account when he begins his savings plan.

For the second question- A
The slope tells us how much money he has after nine weeks.

12 people are waiting at a subway stop to get on the train. However, the train only has space for 9 people to board. How many different combinations of
people can get on the train?
O 220
1.320
13,305,600
O 79.833.600

Answers

Answer:

Step-by-step explanation:

help help this was due last week

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50 ft WxHxL that’s the formula for finding volume.:9 the answer is 50 ft

Help!
ANYTHING IS APPRECIATED

Answers

Answer:

A:90

B:105

C:60

D:165

Step-by-step explanation:

Brainliest?

A.45
B.30
C.90
D.180
E.40
F.55
G.130
H.50

Answers

I think it’s 40(sorry if I’m wrong)

y-intercept y=1/4x-2

Answers

Answer:

(0,-2)

Step-by-step explanation:

y intercept is when x=0

y=1/4(0)-2

y=-2

(0,-2)

Sydney bought 3 cookies for 1.80 at this price how much would a dozen cookies cost

Answers

Answer:

$7.20

Step-by-step explanation:

A dozen = 12, Sydney bought 3 cookies for $1.80, 12 divided by 3 = 4, so 4 times $1.80 = $7.20

hope this helps :D

Answer:

7.20

Step-by-step explanation:

Which number is located between 19 and 20 on a number line?
A. √(298)
B. √(340)
C.√ (391)
D. √(402)

Answers

Answer: C

Step-by-step explanation: 19² =361 and 20² = 400

i NEED HELP PLS HELP ME

Answers

D. Because McKenzie ate the least

GIVING BRAINLIEST!!!!!!

Which shape has two pairs of parallel sides?

Answers

Answer:

the rectangle

Step-by-step explanation:

Someone, please help me quickly! The question is about probability and I don't remember how to do it since it's been a year... The question is in the picture.

Answers

Answer:

im pretty sure 50%

Step-by-step explanation:

(i'm so so so so sooo sorry if it's wrong)

Answer:

im positive its 75%

9.

Identify the mapping diagram that represents the relation and determine whether the relation is a function.

{(–3, –6), (–1, –6), (5, –6), (8, –6)}

Which of the following is true?

A. choice d.

B. choice a.

C. choice b.

D. choice c.

Answers

Answer: B. The Relation Is A Function

C. choice b.

Step-by-step explanation: I got these steps from 2 different sites

For all values of x, y = - 6

Your function:

y = - 6

...............................................................................................................................................

REDUCE MATRIX TO ROW ECHELON FORM: \begin{pmatrix}a&\cdots &b\\ 0&\ddots &\vdots \\ 0&0&c\end{pmatrix}:\quad \begin{pmatrix}8&-6\end{pmatrix}

STEPS: (8, -6)

MATRIX ALREADY IN ROW ECHELON FORM:

(8, -6)

If the measure of arc ABC = 210°, what is the measure of AOC?
210
150°
100°
125°

Answers

The measure of m(arc AOC) equals to 150°.

What is the area of the sector?

The area of the sector is -

A = θ/360 x πr²

Given is that the measure of arc ABC = 210°.

We can write measure of arc AOC as -

m(arc AOC) + m(arc ABC) = 360°

m(arc AOC) = 360 - 210

m(arc AOC) = 150°

Therefore, the measure of m(arc AOC) equals to 150°.

To solve more questions on arc measurement, visit the link -

brainly.com/question/30098550

#SPJ1

What is the mean? If the answer is a decimal, round it to the nearest tenth.
-4 ,4 ,6 ,-7 ,7, 10, 7,9

Answers

Answer:

The mean is 4 if im correct.

Answer:

Step-by-step explanation:

-4+4+6+-7+7+10+7+9=32

32/8=4

Hi! I need some help on my hw! Feel free to attach a picture explaining it if that’s easier tysm!

Answers

first one is easy money

right angle = 90, and we also have 42 so:

90+42=132

180-132=48

2nd one is weird, why is there a 150 down there? triangles add up to 180 nso right angle already gets 90 degrees.--oh wait I just got it, so that is the angle of the outer. we know a line is 180 degrees, so 180-150=30 so we found that degree

So now 90+30=120, 180-120=60

is it true or false??

Answers

Answer:true

Step-by-step explanation:

It would be -6 which is less that -9

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