What is the exact circumference of the circle? A. 16 cm
B. 8 cm
C. 4 cm
D. 2 cm
I NEED THE ANSWER QUICKLY PLEASE!!!!!!!
Answers
Hey there, we are going to use two formula's, the first formula is C=2πr, and the second formula is D=2r. Now, we solve, C=πd=π*8=25.13274, Therefore, I guess the answer is B. 8 cm
I'm just going to say that 8 cm is right (credit to the person who answered first), I toke the test and got it right! ☺
Use mental math to find the sum of 71+99=
Answers
The answer is 71+99=170
The answer is 170 :)
PLEASE HELP!!! 6x - 2y = 10 for y when x = 2
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6(2)-2y=10 12-2y=10 -12 -12 -2y=-2 divide by -2 y=1 the answer is y equals 1
How do you do number 8
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you have to follow the order of operations. parentheses comes first. solve 5n * 9. you get 45n. take that and multiply it with 2n. you will get 90n as the answer.
For every hour that Noah studies, his test score goes up 3 points. Explain which is the independent variable and which is the dependent variable. Write an equation modeling the relationship between hours studied h and the increase in Noah's test score s.
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The independent variable is hours and the score or points is the dependent variable .equation is s=3h
The independent variable is the test hours that he studies; because they are not affected by any of the other variables. The dependent variable is the test score; because the amount of the test score depends on the variable of the studied hours.
t=test score h=hours studied
t+h3
Not sure about the equation though. Might wanna check that. Hope this helps!
Help me plz on this pre algebra question
Answers
x=side legnth of that right triangle
x=hypotonuse remember if legs=a and b and hypotonuse=c (c=x) c^2=b^2+a^2