Help plzzzz.................
1 answer:
Answer:
a = 6, b = - 12
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms to those on the right side.
a(4x - 10) ← distribute parenthesis
= 4ax - 10a
Compare to 24x + 5b , then
4a = 24 ( divide both sides by 4 )
a = 6
Then
5b = - 10a = - 10(6) = - 60 ( divide both sides by 5 )
b = - 12
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-2x + 5y = 8
2x + 2y = 6
----------------add
7y = 14
y = 14/7
y = 2
2x + 2y = 6
2x + 2(2) = 6
2x + 4 = 6
2x = 6 - 4
2x = 2
x = 2/2
x = 1
solution is (1,2)
Refer to the attachment :)
Answer:
z = -3
Step-by-step explanation:
<u>Use the formula for z-score</u>
This tells us that the person's score of 150 puts him/her 3 standard deviations below the mean of 300.
Answer:
1, -2, -5, -8
Step-by-step explanation:
(-3*x)-5
just do that i swear
