Answer:
64z^2
Step-by-step explanation:
Here's why, it's actually very simple we use exponent rule when raising something to a power. In this case we're raising the term to the second power. So we raise both -8, and z. As so: (-8)^2 x (z)^2
Which equals 64z^2.
Answer:
12 years
Step-by-step explanation:
every 4 years, olympic occurs.
Every 6 years, senator reelection.
if last year was 2020
in 2024 olympic will occur
in 2026 the reelection will occur
in 2028 olympic will occur
in 2032 olympic and reelection will occur will occur
2032 - 2020 = 12
12 years is the answer
Eh can travel 4875 feet in 15 minutes.
Hope this helps!
Answer:
25-(116-1) = -89
(3-9)2 = -12
Step-by-step explanation:
25-(116-1)
<em>solve</em><em> </em><em>the</em><em> </em><em>ones </em><em>in</em><em> </em><em>the</em><em> </em><em>bracket</em><em> </em><em>first</em><em>.</em>
116-1 =115
<em>now</em><em> </em><em>solve</em><em> </em><em>the</em><em> </em><em>expr</em><em>ession</em>
25-(115)
25-115 = -89
(3-9)2
<em>brac</em><em>ket</em><em> </em><em>fi</em><em>rst</em>
3-9 = -6
<em>now</em><em> </em><em>solve</em><em> </em><em>the</em><em> expression</em>
(-6)2
-6×2 = -12
The answer is B; x=18 and y = -20
Proof:
Solve the following system:
{4 x + 3 y = 12 | (equation 1)
{7 x + 5 y = 26 | (equation 2)
Swap equation 1 with equation 2:
{7 x + 5 y = 26 | (equation 1)
{4 x + 3 y = 12 | (equation 2)
Subtract 4/7 × (equation 1) from equation 2:
{7 x + 5 y = 26 | (equation 1)
{0 x+y/7 = (-20)/7 | (equation 2)
Multiply equation 2 by 7:
{7 x + 5 y = 26 | (equation 1)
{0 x+y = -20 | (equation 2)
Subtract 5 × (equation 2) from equation 1:
{7 x+0 y = 126 | (equation 1)
{0 x+y = -20 | (equation 2)
Divide equation 1 by 7:
{x+0 y = 18 | (equation 1)
{0 x+y = -20 | (equation 2)
Collect results:
Answer: {x = 18, y = -20