4 years ago

Please help me answer this question. I have a quiz tomorrow :(

Mathematics

1 answer:

babymother [125]4 years ago

6 0

Answer:

Y E S

Step-by-step explanation:

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X-y+z=6, 2y+z=12, z=2

snow_tiger [21]

For z=2⇒ 2y+2=12
2y=12-2
2y=10
y=10:2
y=5
x - y+z=6
x - 5 + 2=6
x -3 =6
x=6+3
x=9

7 0

3 years ago

Which one is it?? <br> (btw the negative answer isn't right.)

Semmy [17]

Answer:

Step-by-step explanation:

Rule: a Minus power always goes to the opposite place to where it is. If it is in the denominator, it goes to the numerator. If it is the numerator, it goes to the denominator. The minus power does not affect the sign of the expression.

So you are right. The minus power does not give a minus answer.

$\dfrac{y^{-2}}{3y^4}=\dfrac{1}{3y^2y^4}=\dfrac{1}{3y^{(2 + 4)}} = \dfrac{1}{3y^6}$

Answer: A

4 0

4 years ago

Evaluate 3y^2-5y-6 when y =2

tester [92]

Answer:

the answer would be -4

Step-by-step explanation:

just replace the variable y with two in the expression and solve

3(2)^2-5*2-6

7 0

3 years ago

Can someone help me please (brainiest and 50 points)

goblinko [34]

Answer:1. 12 ft sq.

2. 4 ft

3. 12 - 4(doors) = 8

6 0

3 years ago

Read 2 more answers

Can you Simplify radical

MAVERICK [17]

Answer:

Step-by-step explanation:

4 X 4 + 16

4 0

3 years ago

Please help me answer this question. I have a quiz tomorrow :(​

Please help me answer this question. I have a quiz tomorrow :(