Ok when you are estimating you basically make all the numbers have no decimal or turn them all to tens. For this question you have to make 31.9 have no decimal so you turn it into 32. Then you divide 32 and 4. That equals 8. So 8 is your answer :)
Answer:
Step-by-step explanation:
-3i √(-40) = -3i √40i² ...(i² = - 1)
= -3i √40 i
-3i √(-40) = 3√40
Answer:
Step-by-step explanation:
This equation is in slop-intercept form. This means that the y-int is in the equation, it will always be the constant, so y is -18.
To find x, set y to 0.
0 = 8x - 18
18 = 8x
18/8 = x
9/4 = x
Answer:
Positive, because the products (–5)(–3) and (–8)(–6) are positive, and the product of two positive numbers is positive.
Step-by-step explanation:
If you multiply 2 negatives, the product will become positive.
The product of -5 and -3 is 15.
The product of -8 and -6 is 48.
The products are both positive.
15 * 48 = 720
Two positive numbers multiply to a positive product.
