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kykrilka [37]
3 years ago
12

SOLVE THE SYSTEM USING ELIMINATION!!!! HURRY ILL GIVE BRAINLIEST!!

Mathematics
2 answers:
vesna_86 [32]3 years ago
7 0

Answer:

x=5 \\y=3

Step-by-step explanation:

-2x+3y=-1\\2x+5y=25

Add these equations to eliminate x:

8y=24

Then, solve 8y=24 for y:

8y=24

\frac{8y}{8} =\frac{24}{8} (divide both sides by 8)

y=3

Now let's find the value of x:

Substitute 3 for y in -2x+3y=-1

-2x+(3)(3)=-1

-2x+9=-1 (simplify both sides of the equation)

-2x+9+-9=-1+-9 (add both sides by -9)

-2x=-10

\frac{-2x}{-2} =\frac{-10}{-2}  (divide both sides by -2)

x=5

Therefore, the value of x = 5 and y = 3

Neporo4naja [7]3 years ago
4 0

Answer:

(5,3)

Step-by-step explanation:

add the equations to eliminate to x's and get 8y=24

divide both sides by 8 to get y=3

then substitute in -2x+3(3)=-1 to solve for x

so x=5 so the solution is (5,3)

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Step-by-step explanation:

60m/s

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4 years ago
Admission for a water park is 17.50 per day.a season pass cost 125. How many days must you go to the water park to make buying t
solmaris [256]

You must go to the water park for 8 days to make buying the season pass worth it.

<em><u>Explanation</u></em>

Suppose, the number of days you must go to the water park is  x

Admission for the park is 17.50 per day. So, <u>the total cost for x days</u> will be:  17.50x

Given that, the season pass cost 125. So, the equation will be.....

17.50x=125\\ \\ x=\frac{125}{17.50}=7.142...\\ \\ x \approx 8

<em>(As the number of days can't be in decimal)</em>

So, you must go to the water park for 8 days to make buying the season pass worth it.

7 0
3 years ago
4. Elena makes her favorite shade of purple paint by mixing 3 cups of blue paint,
Katyanochek1 [597]
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3 0
3 years ago
Let SSS represent the number of sunflower plants and LLL represent the number of lily plants Ezra's water supply can water.
Fantom [35]

Answer:

Ezra can water at most approximately 8 sunflower plants with the remaining amount of water.

Step-by-step explanation:

Given the inequality function

0.7S+0.5L≤11 where S represent the number of sunflower plants and L represent the number of lily plants Ezra's water supply can water, if Ezra waters 10 lily plants, then we can calculate the maximum amount of sunflower plant that he can water with the remaining amount of water by simply substituting L = 10 into the inequality function as shown;

0.7S+0.5L≤11

0.7S+0.5(10)≤11

0.7S+5≤11

Taking 5 to the other side:

0.7S≤11-5

0.7S≤6

S≤6/0.7

S≤8.57

This shows that Ezra can water at most approximately 8 sunflower plants with the remaining amount of water.

3 0
4 years ago
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