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2 years ago

If y = 0.25(100 - y), then what is the value of y?

Mathematics

2 answers:

erastova [34]2 years ago

8 0

Answer:

Step-by-step explanation:

y = 0.25(100 - y)

Distribute

y = 25 - .25y

Add .25y to each side

y+.25y = 25

1.25y = 25

Divide each side by 1.25

1.25y/1.25 = 25/1.25

y = 20

Natali5045456 [20]2 years ago

4 0

Answer:

The correct/valid answer is 20.

Step-by-step explanation:

Step 1: Multiply both sides by 100

y*100 = 0.25(100-y)*100

Step 2: Refine

y*100 = 25 (100-y)

Step 3: Expand 25(100-y) : 2500 - 25y

y*100 = 2500-25y

Step 4: Add 25y to both sides of the givn equation

y*100+25y = 2500-25y+25y

Step 5: Simplify the equation

125y = 2500

Step 6: Divide both sides of the equation by 125

125y/125 = 2500/125

Final step: Simplify

y=20

Mark as brainliest please, i need a few more :D

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frutty [35]

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2 years ago

Oliva is throwing a party, and she wants to invite 25 people. She wants to bake cupcakes for dessert. The recipe has a serving s

Vladimir [108]

She wants 25she divides each by 12 to get for 1 person then multiplies by 25 to get for 25 peoplemulitply each ingredient by 25/12
for multiplying fractions, try to put them in standard a/b form first

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baking powder1 times 25/12=25/12=24/12+1/12=2+1/12=2 and 1/12 tsp baking powder

salt1/2 times 25/12=25/24=24/24+1/24=1+1/24=1 and 1/24 tsp salt

butter1 times 25/12=25/12=24/12+1/12=2+1/12=2 and 1/12 stick of butter

sugar
1 times 25/12=25/12=24/12+1/12=2+1/12=2 and 1/12 cup of sugar

eggs3 times 25/12=3/1 times 25/12=75/12=25/4=24/4+1/4=6+1/4=6 and 1/4 eggs

vanilla extract
1 and 1/2 times 25/12=2/2+1/2 times 25/12=3/2 times 25/12=75/24=25/8=24/8+1/8=3+1/8=3 and 1/8 tsp vainlla extract

milk3/4 times 25/12=75/48=25/16=16/16+9/16=1+9/16=1 and 9/16 cup milk

for 25 servings
she needs

3 and 1/8 cup flour
2 and 1/12 tsp baking powder1 and 1/24 tsp salt2 and 1/12 stick of butter2 and 1/12 cup of sugar
6 and 1/4 eggs3 and 1/8 tsp vanilla extract1 and 9/16 cup milk

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2 years ago

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o-na [289]

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Step-by-step explanation:

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3 years ago

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Elena-2011 [213]

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2 years ago

1) Miguel has a gift card to an electronics store. He has $ 150 on the card. He purchased a DVD for $ 20 and some games for $12.

GrogVix [38]

Answer:

9 games

Step-by-step explanation:

If he purchase 1 game, he spent $12.50. If he purchased 2 games, he spent 2(12.50) = $25.

This means he spent 12.5x for x number of games.

His total spending will be 12.5x + 20. He has $17.50 left on the card from $150.

150 - (12.5x + 20) = 17.5

150 - 12.5x -20 = 17.5

130 - 12.5x = 17.5

-12.5x = 17.5 - 130

-12.5x = -112.5

x = 9

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2 years ago