Answer:
the second one
Step-by-step explanation:
if we did not have green plants.. we would die
hope this helps :)
The correct answer is C! Because 21/2 = 10.5 and 10.5 x 4.5 = 47.25
Answer:
2sqrt(17)
Explanation:
First, prime factorize 68:
sqrt(2*2*17)
Notice we have 2^2 in the equation, so we can just bring 2 out of the square root;
2sqrt(17)
I hope this helped.
Answer:
y = 3x -7
Step-by-step explanation:
If you use the y = mx + b formula for a line, you know m = 3 because the question says the line is parallel so it must have same slope. In this formula, b is the y intercept and it's already given as -7. Therefore, y = 3x -7.
Answer:
x=80
Step-by-step explanation:
To find the average, we take the numbers, add them up. Then divide by the number of terms we added.
Let x= the unknown number
The average =90
Average = (138+40+102+x)/4
90 = (138+40+102+x)/4
Multiply by 4 on each side
90*4 =(138+40+102+x)/4 *4
360 = (138+40+102+x)
Combine like terms
360 = 280 +x
Subtract 280 from each side
360-280 = 280+x-280
80 =x
