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3 years ago

Renee is wanting to join a gym.

1 answer:

7 0

Pumping iron: 10x+90=0
Fit for life: 15x+50=0

Set them equal to each other. 10x+90=15x+50. Solve for x. Subtract 50 from both sides, get 10x+40=15x, then subtract 10x from both sides, getting 40=5x. Divide 5 from both sides to isolate x, x=8. After 8 months the two gyms will cost the same.

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xz_007 [3.2K]

Answer:

$Center = \boxed{1}, \: \boxed{ - 2} \: ; \: Radius = \boxed{3}$

Step-by-step explanation:

${x}^{2} + {y}^{2} - 2x + 4y - 4 = 0 \\ \\ ({x}^{2} - 2x + 1 - 1) + ( {y}^{2} + 4y + 4 - 4) - 4 = 0 \\ \\ ( {x}^{2} - 2x + 1) + ( {y}^{2} + 4y + 4) - 9 = 0 \\ \\ {(x - 1)}^{2} + {(y + 2)}^{2} = 9 \\ \\ {(x - 1)}^{2} + {(y + 2)}^{2} = {3}^{2} \\ \\ equating \: it \: with \\ \\ {(x - h)}^{2} + {(y - k)}^{2} = {r}^{2} \\ \\ h = 1 \\ k = - 2 \\ r = 3 \\ \\ center = \boxed{1} \: \boxed{ - 2} \: \: radius = \boxed{3}$

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3 years ago

The median number of goals scored by 7 players in a certain soccer season is 5. The range of the number of goals scored by those

OLEGan [10]

True true true true

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3 years ago

A school club sold 300 shirts. 31% were sold to fifth graders, 52% were sold to sixth graders, and the rest were sold to teacher

Yuri [45]

You would do 300• 31/100 to get 90. I’m pretty sure that’s right

4 0

2 years ago

The admission at the movies is $5 for children and $10 for adults. The total amount collected was

sesenic [268]

Answer:

Number of children, x= 400

Number of adults, y = 100

Step-by-step explanation:

Let the number of children be x

Let the number of adults be y

Given : Total number of people, x + y = 500 --------(1)

Total amount collected, 5x + 10y = 3000 ---------(2)

(1) => y = 500 - x

Substitute y in (2) : 5x + 10(500 - x) = 3000

5x + 5000 - 10x = 3000

-5x = 3000 - 5000

-5x = -2000

x = 400

Substitute x in (1) : 400 + y = 500

y = 500 - 400

y = 100

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2 years ago

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rosijanka [135]

Answer:

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2 years ago

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