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3 years ago

Will give brainlist if correct. Solve the system. Nearest tenth accepted.

Mathematics

1 answer:

Semmy [17]3 years ago

8 0

Answer:

The variable y should equal 5 2/5 or 5.4 as a decimal.

Step-by-step explanation:

The variable x equals 1 so we can replace x in the equation y = 2/5x + 5 with 1.

y = 2/5(1) + 5

This is our new equation. Any number multiplied by 1 will equal itself so in this case, 2/5 times 1 equals 2/5 or 0.4 in decimal form. Now we can add 2/5 or 0.4 to 5 and we will get 5 2/5 or 5.4. Now we will only have y = 5 2/5 or 5/4 in the equation and this is where we will stop solving for y. In conclusion, y equals 5 2/5 or 5.4. I hope this helps! If this answer is wrong, please give me some feedback on what I did wrong! Thank you!

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Mary McDonald makes mugs in Miami. She makes two sizes of mugs: a small mug that she sells for $2.50 and a large mug that she se

IrinaVladis [17]

Mary McDonald sold 11 small mugs and 10 large mugs.

Step-by-step explanation:

Given,

Total cost of sold cups = $85

Cost of one small cup = $2.50

Cost of one large cup = $5.75

Cups at the start of day = 215

Cups at the end of day = 194

Cups sold = Cups at the start of day - Cups at end of day

Cups sold = 215 - 194 = 21

Let,

x represents the number of small cups.

y represents the number of large cups.

According to given statement;

x+y=21 Eqn 1

2.50x+5.75y=85 Eqn 2

Multiplying Eqn 1 by 2.50

$2.50(x+y=21)\\2.50x+2.50y=52.50\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(2.50x+5.75y)-(2.50x+2.50y)=85-52.50\\2.50x+5.75y-2.50x-2.50y=32.50\\3.25y=32.50$

Dividing both sides by 3.25

$\frac{3.25y}{3.25}=\frac{32.50}{3.25}\\y=10$

Putting in Eqn 1

$x+10=21\\x=21-10\\x=11$

Mary McDonald sold 11 small mugs and 10 large mugs.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

Identify the type of transformation given the rule V(x, y) = (x, y + 4).

77julia77 [94]

Hello,

translation of 4 units verticaly upside.

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3 years ago

Logan can make $50 per pool to clean pools during the summer to earn money. He did, however, need to

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Answer:

Step-by-step explanation:

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2 years ago

The infinite geometric sum formula can be used to write 0.126126126...as a fraction. What is the numerator of this reduced fract

Allisa [31]

Answer:

B.14

Step-by-step explanation:

0.126126126... = x

1000x = 126.126126...
1000x - x = 126
999x = 126
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Numerator is 14

Correct answer is B.14

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3 years ago

Kenny is on the local swim team for the summer and has swim practice

AnnyKZ [126]

Answer:

She swims for 3 hours each morning.

Step-by-step explanation:

To determine the number of hours that Kenny swims in the morning, it is necessary to perform the following equation, taking into account that he swims 5 days a week for a total of 30 hours a week, and that in the afternoon he swims for 3 hours:

X + 3 x 5 = 30

X + 3 = 30/5

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Therefore, Kenny swims for 3 hours in the morning.

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3 years ago