MATHEMATICS HIGH SCHOOL

HELP PLZZZSS EASYYYY 10 POINTS easy

Answers

Answer 1

Answer:

Answer:

A. 3:30.

Step-by-step explanation:

180 is 90+90 so that would put it in 3:30.

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Which number line correctly shows 1.5+2.5?

What is the full number of pi?

Answers

Pi is an irrational number, meaning that it can never end. Usually pi is writen as the symbol π or is rounded to 3.14.

374192 and so on and so on there is no full number for pi it goes on forever

estion 15 of 20 : Select the best answer for the question. 15. In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.42 centimeters?

Answers

We have to calculate the size of a buttonhole if we know that it needs to be the size of the button`s diameter. We know also a circumference of the button: C = 9.42 cm. Formula for calculating the circumference is: C = 2 * r * Pi = d * Pi. Pi is approximately 3.14. So 9.42 = d * 3.14; d = 9.42 : 3.14; d = 3 cm. Answer: The size of the buttonhole has to be 3 cm.

What is the remainder when (2x3 + 4x2 – 32x + 18) ÷ (x + 3) ?2

12

96

110

Answers

For the answer to the question above,

Let f(x)=2x3 + 4x2 − 32x +1 8

The remainder when f(x) is divided by (x−a) is f(a).

So when divide by (x + 3 ) = (x − (−3)) the remainder is:

f(−3) = 2(−27) + 4(9)− 32 (−3) +18=−54 +3 6 + 96 + 18 =96Yes, the remainder is 96I hope my answer helped you

96 because if you use synthetic or long division the remainder will be 96

4c^2-8c-1=0 complete the square round to nearest hundredth

Answers

move constant to other side
add 1
4c^2-8c=1
divide by 4 to make leading coeficient 1
c^2-2c=1/4
take 1/2 of linear coeficient and square it
-2/2=-1, (-1)^2=1
add that to both sides
c^2-2c+1=1/4+1
factor perfect squaer and add
(c-1)^2=5/4
square root both sides
c-1=+/-(√5)/2
add 1
c=1+/-(√5)/2

c=2.12 or -0.12

128 is what percent of 640

Answers

The number 128 is 20 percent of 640.

What is percentage?

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion therefore refers to a component per hundred. Per 100 is what the word percent means.

Let 128 is x percent of 640.

Here, x% of 640 =128

x/100 ×640 =128

6.4x=128

x=128/6.4

x=20%

Therefore, the number 128 is 20 percent of 640.

To learn more about the percentage visit:

brainly.com/question/24159063.

#SPJ2

↑ 128 is 20% of 640
Lets solve:
640 IS 100% Because its the output value of the task
So lets look for x
We got 100%=640
and x%=128
Now im going to write this out as
100% / x%=640/128
Now we just have to solve this simple equation.
(100/x)*x=(640/128)*x
-Multiply both sides of the equation by x
Now we divide both sides of the equation by 5 to get x.
100=5x
100/5=x
20=x
and
x=20
So we got our answer of 20%

What two numbers multiply together equal -40 add together to equal positive 6