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Vesnalui [34]
3 years ago
14

Solve the system using the substitution method. -3x – 4y = 2 x = y - 3

Mathematics
1 answer:
laila [671]3 years ago
8 0

Answer:

y= −5/4x

heart if it helped!

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The variable z varies jointly with the square of x and inversely with y. Z = 4.4 when x = 3 and y =2. Find an equation that rela
Mrac [35]

Answer:

z = 0.9778x^2 / y.

Step-by-step explanation:

When z varies with the square of x the equation is z = kx^2 where k = a constant.

If it also varies inversely with y the equation is z = kx^2/y.

When z = 4.4 , x = 3 and y = 2 we have:-

4.4 = k * 3^2 / 2

Multiplying by 2:

8.8 = 9k

k = 8.8 / 9  

= 0.9778.

So the required formula is z = 0.9778x^2 / y.


4 0
3 years ago
Help pleaseee !!<br> Equation work
Lina20 [59]

-11.2 + 4(2.1 + q) =  -0.8

-11.2 + 8.4 + 4q = -0.8

4q = -0.8 + 11.2 - 8.4

4q = 2

q = 1/2   Answer


3x = -9

x = -9 / 3

x = -3 Answer

4 0
4 years ago
Jared monica and heather have 5 hallways to decorate. how much will they each decorate
emmainna [20.7K]

Answer:

each person will decorate 2 hallways by themselves and one hallway they will do together. If you want it to be fair.

Step-by-step explanation:

6 0
3 years ago
A calculator that didn't follow the rules for order of operations gave the value 36 for the expression 8+n*3. What is the value
shusha [124]
N=9
9 \times 3 = 27 \\ 27 + 8 = 35
n=9.333333333333333
9.333333333333333 \times 3 = 28 \\ 28 + 8 = 36
that is 15 3's by the way.
6 0
4 years ago
HELP HELP HELP HELP PLEASE PLEASE !!!!!
Serggg [28]

Answer:

Correct answer would be 84/12=7

Step-by-step explanation:

Reason being , Its asking the "product" Of Julies score (7)

If you divide 84 /7 it will be =12

since its already giving you what its equal you would flip it and it would be 84/12

4 0
3 years ago
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