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omeli [17]
3 years ago
7

What is the solution to the system of equations below? 3x-2y=7 and -3x+5y=5

Mathematics
1 answer:
Zolol [24]3 years ago
8 0

Step-by-step explanation:

So you add one over the other

3x-2y=7

-3x+5y=5

=

3y=12

Then you divide 3 from both sides

(3y)/3=12/3

y=4

Then you substitute the y=4 in to the equation of your choice

3x-2(4)=7

3x-8=7

3x-8=7

+8 +8

3x=15

x=5

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In the Holiday Shop the manager wants 20% of the total inventory in the stockroom and the rest displayed on the floor. After mee
Lilit [14]

Answer:

Total inventory: $175,000

Inventory in the stockroom: $35,000.

Inventory on the selling floor: $140,000.

Step-by-step explanation:

Let x be the the total inventory.

We have been given that in the Holiday Shop the manager wants 20% of the total inventory in the stockroom. You placed $35,000 of inventory in the stockroom.

We can set an equation such that 20% of x equals $35,000.

\frac{20}{100}\cdot x=\$35,000

0.20x=\$35,000

\frac{0.20x}{0.20}=\frac{\$35,000}{0.20}

x=\$175,000

Since $35,000 of inventory in the stockroom, so we will subtract $35,000 from $175,000.

\text{Amount of the inventory on the selling floor}=\$140,000

Therefore, $140,000 of the inventory on the selling floor.

7 0
2 years ago
For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical
lisov135 [29]
If c is the hypotenuse and b is the leg, then the third side (a):
a= \sqrt{c^2-b^2}= \sqrt{16^2-9^2}= \sqrt{256-81}= \sqrt{175}=5 \sqrt{7}

If b and с are legs, then hypotenuse (a):
a= \sqrt{b^2+c^2}= \sqrt{9^2+16^2}= \sqrt{81+256}= \sqrt{337}
3 0
2 years ago
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Burka [1]

Answer:

10(x+y)

Step-by-step explanation:

the sum is addition

4 0
2 years ago
Manuel baked 30cookies.his family ate c them.using c, write an expression for the number of cookies that remained
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2 years ago
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drek231 [11]
First, set up the formula.
V=pi*r^2*h
Substitute 10 for r and 15 for h.
V=pi*10^2*15
V=pi*100*15
V=pi*1500
V=4710 cubic feet
It takes 4710 cubic feet of water to fill the well.
5 0
3 years ago
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