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kifflom [539]
3 years ago
13

Solve for y. -2(y-7) =9y – 30 Simplify your answer as much as possible.

Mathematics
1 answer:
alexira [117]3 years ago
4 0

Answer:

y=4

Step-by-step explanation:

-2(y-7)=9y-30

  • Do distributive property

-2y+14=9y-30

  • Move the terms

-2y-9y=-30-14

  • Collect like terms

-11y=-30-14

  • Calculate the difference

-11y=-44

  • Divide both sides by -11

y=4

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A fruit stand has to decide what to charge for their produce. They decide to charge $5.30 for 1 apple and 1 orange. They also pl
Jet001 [13]

Answer:

We cannot find a solution to the system of equations.

a+b = 5.30

2a + 2b = 14


Step-by-step explanation:

Let a = the price of an apple

let b = price of an orange

a+b = 5.30

2a + 2b = 14

Multiply the first equation by 2

2a+ 2b = 10.60

Subtract the second equation

2a+2b = 10.60

-2a+2b = 14

---------------------------

0 = -3.40

This is never true  so there is no solution

3 0
3 years ago
Which fraction is greater 31/52 or 37/64
fiasKO [112]
31/52 is greater because the pie as I imagine it would be cut into bigger slices than 37/64 because then the pie has to be cut into 64 pieces instead of 52


Therefore, 31/52 is bigger and greater
6 0
4 years ago
what is the total number of unique triangles that can be made with the side lengths of 4cm, 5cm, and 10cm can be drawn? PLS HELP
Novay_Z [31]

Answer:

One

Step-by-step explanation:

       First, we need to check a triangle with these sides <em>is</em> possible. Since 4 plus 5 is 9, and 9 is less than 10, we can make a triangle with these sides.

       To answer the question, we can only make one unique triangle. Why? They give us three lengths and a triangle has three sides.

            <em>However</em>, if they are counting a triangle in different positions the answer will be greater. Since it would just be the same triangle, I am going with the answer of only one.

7 0
2 years ago
Solve the simultaneous equations. <br> Please help
gavmur [86]

Answer:

x=1/2, y=4

Step-by-step explanation:

Double both sides of the top equation:

4x+6y=26

Now subtract boths sides of the second one from the first one:

(4x+6y) - (4x-y) = 26 - (-2)

7y = 28

so y = 4

4x-y=-2 so 4x-4=-2

4x=2

x=1/2

4 0
3 years ago
3-3k+7k=5b solve for k 
DaniilM [7]
3-3k+7k=5b \\\\ 3+4k=5b \\\\ 4k=5b-3 \\\\ \boxed{k=\frac{5b-3}{4}}
5 0
3 years ago
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