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kirill [66]
3 years ago
10

Help! On these questions

Mathematics
1 answer:
Radda [10]3 years ago
3 0
1/4z + 8 = 12
1/4z = 12 - 8
1/4z = 4
z = 4 / (1/4)
z = 4 * 4/1
z = 16 <===
==================
-3(2n + 1) + 7 = -5
-6n - 3 + 7 = -5
-6n + 4 = -5
-6n = -5 - 4
-6n = -9
n = -9/-6
n = 3/2 <===
===================
2.5(t - 2) - 6 = 9
2.5t - 5 - 6 = 9
2.5t - 11 = 9
2.5t = 9 + 11
2.5t = 20
t = 20 / 2.5
t = 8 <===


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ANSWE PLEASEEEEEEEEEEEEEEE
Natalka [10]

Answer:

your answer is gonna be A!! <3

Step-by-step explanation:

1 Subtract 33 from both sides.

y-3=-2x

y−3=−2x

2 Divide both sides by -2−2.

-\frac{y-3}{2}=x

−

2

y−3

=x

3 Switch sides.

x=-\frac{y-3}{2}

x=−

2

y−3

5 0
2 years ago
What is 12 and 13 please help
Tanzania [10]
12. 1500 cm² 
13. Monica forgot to multiply by 1/2 
The area of the fabric is 45 in²

Hope this helped!! (:
5 0
3 years ago
How do you do this?<br>please help if possible!
stellarik [79]
(a) need to find the number of books, we'll call it "b". then the money (6w) minus the cost of books (17b) equals change left over (w)
6w - 17b = w
6w - w = 17b
5w = 17b
(5/17)w = b

(b) if w = 34
(5/17) *34 = b
10 = b
7 0
3 years ago
Read 2 more answers
X+4 over 3 = x+6 over 4
Gnesinka [82]
If you are asking to solve for x the answer is:
x = 2
Hope This Helps!!
:)
4 0
2 years ago
Read 2 more answers
Solve the system of equations by substitution. Show your work in the sketch and write your answer as an ordered pair.
Ede4ka [16]

Let's solve your system by substitution.

−3x+y=−2;y=4x

Rewrite equations:

y=4x;−3x+y=−2

Step: Solvey=4xfor y:

y=4x

Step: Substitute4xforyin−3x+y=−2:

−3x+y=−2

−3x+4x=−2

x=−2(Simplify both sides of the equation)

Step: Substitute−2forxiny=4x:

y=4x

y=(4)(−2)

y=−8(Simplify both sides of the equation)

Answer:

x=−2 and y=−8

3 0
3 years ago
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