Mathematics High School

1. If the area of a circle is 81pi square feet, find its circumference.
2.If Tim had lunch at $50.50 and he gave 20% tip, how much did he spend?

Help plzzz​

Answers

Answer 1

Answer:

the circumference is 18 pi feet.

Step-by-step explanation:

Related Questions

answer asap! will give brainliest, question in pic!

Answers

Answer:

Im 95% sure that it is most likely the first one.

Step-by-step explanation:

Which of the following is NOT a solution for the inequality below? Please look at the picture

Answers

Hello Vanessa. I will be contacting your school for cheating.

Mark opens a bank account with $20. He plans to put in $5 each week.

Complete the table below to show the total amount of money Mark has in his bank account from 0 to 10 weeks.

Time
(weeks)
0
1
2
3
4
5
6
7
8
9
10
Money ($)
$20

Answers

Answer:$60 per week

Step-by-step explanation:

120+90+0+30+0+150+30=420

420/7= 60

(07.01)What is the value of x in the equation 8 + x = 3?
-5
5
11
24

Answers

Answer:

-5

Step-by-step explanation:

11 because you add 8 and 3 do eleven and x

Question 23 of 25
What is the value of x in the diagram below?
49
IN
14
2
A. 6
B. 9
C. 8
D. 7
HELP ASAPPPPPP

Answers

Answer: D

Step-by-step explanation:

because 7x7= 49

image down below thx

Answers

Answer: I thinks its B

Step-by-step explanation:

The answer is b
As 66/6 is 11
And the sign doesn’t change

Please help me, its due in a few minutes. There are multiple slides!
Not trying to be picky but please answer all if able to!

Answers

Answer:b

Step-by-step explanation:

Answer:

1- B

2- D

3- ?

4- B

5- ?

should i add, multiply, subtract, or divide n+16=9

Answers

Answer:

subtract

Step-by-step explanation:

16 from 9

n = 9 - 16

n = -7

Mike went on a vacation to ohio.When he went home the odemeter read 7,219.4 miles.When he returned home the odemeter read 8,192.6 miles.How many miles did mike travel?

Answers

Answer:

973.2 miles

Step-by-step explanation:

miles travelled = miles on the odemeter after the trip - miles on the odemeter before the trip

8192.6 - 7219.4 = 973.2

6y+12=24 turn this equation into standard form “y=Mx+b” I WILL MAKR BRAINLIEST!! 17 POINTS!!!!

Answers

Answer:

[tex]y=2[/tex]

Step-by-step explanation:

Standard form is y=mx+b, where m=slope and b=y-intercept

I really hope this helps :-)

[tex]-noorati[/tex]

Complete the equation of the line whose slope is -5/3
and y-intercept is (0, -2).

Answers

Answer:

these are tough,   it takes a lot of practice to get used to these, sooo

Step-by-step explanation:

we know the slope, m= -5/3,   and we're given a point so use the point slope formula

y= mx + b

the point we are given is in this form  (x,y)

then plug the information into our point slope formula

y = (-5/3) x  + (-2)

y = -5x/3 -2

Hello, what do I write on my number line?

Answers

Answer:

1/2,1/2,1/2,1/4,1/4,1/4,3/4,3/4

Step-by-step explanation:

I hope it helped!

1/2 1/2 1/2 1/4 1/4 1/4 3/4 3/4

For what value of k does the equation 6(x + 1) + 2 = 3(k5x + 1) + 3 have no solution?

Answers

Answer:

k = (6/15)

Step-by-step explanation:

The equation is:

6*(x + 1) + 2 = 3*(k*5*x + 1) + 3

To have no solutions, we need to have something like:

x + 7 = x + 4

where we can remove x in both sides and end with

7 = 4

So this equation is false, meaning that there is no value of x such that this equation is true, then the equation has no solutions.

First, let's try to simplify our equation:

6*(x + 1) + 2 = 3*(k*5*x + 1) + 3

6*x + 6 + 2 = 3*k*5*x + 3*1 + 3

6*x + 8 = 15*k*x + 6

if 15*k = 6, then the system clerly has no solution.

then:

k = 6/15

then we get:

6*x + 8 = (6/15)*15*x + 6

6*x + 8 = 6*x + 6

8 = 6

The system has no solutions.

Plz help
What decimal is equivalent to 21/25

Answers

It’s not step by step on how to figure it out but 0.84 is equivalent to 21/25

Find the inverse of the function
g(x)=2x+5
algebraically.

Answers

*g(x) = y*
2x + 5 = y
2x = y - 5
x = (y - 5)/2

*Inverse*
g^-1(x) = (x-5)/2

Solve (3x-4)-(5x-3) and simplify the answer!

Answers

Answer:

-2x-1

Step-by-step explanation:

(3x-4)-(5x-3)

Distribute the minus sign

3x-4-5x+3

Combine like terms

3x-5x  -4+3

-2x-1

On a coordinate plane, a line with a 90-degree angle crosses the y-axis at (0, 1), the x-axis at (1, 0), turns at (3, negative 2), and crosses the x-axis at (5, 0). What is the lowest value of the range of the function shown on the graph?

Answers

Answer:

-2

Step-by-step explanation:

Answer:

THE ANSWER IS B) -2

Step-by-step explanation:

ON EDGE 2021

pls help i will give brainliest

Answers

The answer is c. 28.26 cm^2

Answer:

28.26

Step-by-step explanation:

A

=

π

r

2

=

π

·

3

2

≈

28.27433

what is the solution
y=-4x+20 y=2x-22

Answers

Answer: x=7 y=-8

Step-by-step explanation:

what is the disadvantage and advantage​

Answers

Answer:

An advatage is that he has a scholorship to pay most of his college or school, but a disadvantage is that he will need to pay back his student loan.

Step-by-step explanation:

hope this helps :)

Answer:

Step-by-step explanation:

One advantage would be with a student loan he could probably get more money than a scholarship however the disadvantage is he would eventually have to pay that money back in the future. A scholarship would be free money given by a college but he would receive it in small amounts.

someone please solve

Answers

Answer:

B

Step-by-step explanation:

Radius is half of diameter so r is 36

[tex]4/3\pi r^3[/tex] is volume of sphere

using 3.14 as pi you get 195,333.12 cubic cm

Multiply each equation by a number that produces opposite coefficients for x or y 1/3x -2/3 y=7

Answers

Answer:

Attached

Step-by-step explanation:

PLEASE PLEASE PLEASE HELP!!

Answers

Answer:

B is the answer.

Since 7 and 12 are both the legs of the right triangle, we are going to use pythagorean theorem.

[tex] {7}^{2} + {12}^{2} = {c}^{2} [/tex]

Isolate side c

[tex] \sqrt{ {7}^{2} + {12}^{2} } = c[/tex]

1. The change in the population of fruit flies can be modeled by the equation f(t) = 3(1.50), where
t is time in days. Which statement describes the change in population of fruit flies?
a. 1.50% decrease daily
c. 50% increase daily
b. 1.50% increase daily
d. 50% decrease daily

Answers

The answer is c they increase daily

Please answer AND Explain ASAP. Whoever has the best explanation will get brainiest

I'm trying to understand this!!

Answers

Answer:

eric=12

bill=16

Step-by-step explanation:

you can solve this using two simple algebraic equations. this is the key I will be using:

x=bill

y=Eric

x+y=28

x=y+4

since x is by itself in the second equation, I can replace the x in the first equation with y+4

(y+4)+y=28

subtract 4 from both sides

y+y=24

which is also 2y=24

divide both sides by two.

y=12

so now we know Eric is 12 years old.

using this, we can replace the "y" in the second original equation (x=y+4)

x=12+4

x=16

Bill is 16 years old.

The box shown has a volume of 8 cubic inches.
image
If it is a cube, how long does each side measure?

Answers

Answer:

The answer is 2

Step-by-step explanation:

If we use the formula for volume LWH=V. We also take in the fact that a cube has the same measure on every side. and we input 2 for L , W , and H

Which is 2*2*2=8

Write an equation of the line with a slope of -2/7 and a y-intercept of 5.

Answers

the formula is y=mx+b

mx is the slope and b is the y-intercept

y=-2/7+5

---

hope it helps

can someone please help me​

Answers

Answer:

i think just 2

Step-by-step explanation:

Answer:

-x²-12x+6 is your answer

Kip took out a loan for $750. He earned $60 in interest and his interest
rate was 4%. How long did he take to repay the loan?
1 year
2 years
2.5 years
3 years

Answers

9514 1404 393

Answer:

  (b)  2 years

Step-by-step explanation:

The interest formula is ...

  I = Prt . . . . interest rate r on principal P for t years

We can fill in the known values and solve for t.

  60 = 750·0.04·t

  60/30 = t = 2

The loan was repaid in 2 years.

5x^2-44x+130=-30+16x

Answers

Answer:

if its answer for x its

Step-by-step explanation:

=4

=8

5x²-44x + 130 = -30 + 16x

5x²-44x + 130 + 30 - 16x = 0

5x² -60x + 160 = 0

devide by 5

x² - 12x + 32 = 0

(x-4) (x-8) = 0

x-4 = 0 then x = 4

x-8 = 0 then x = 8


so x=4 and x=8
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