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3 years ago

Need help solving these 3 equations, please help.

Mathematics

1 answer:

pantera1 [17]3 years ago

3 0

1.) r=-1/3
2.) x=-33/29
3.) x=-4/5 x=2/5

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What is the simplified expression for Negative 3 (2 x minus y) + 2 y + 2 (x + y)?

Lana71 [14]

Answer:

$7y - 4x$

Step-by-step explanation:

$-3 (2x-y)+2y+2(x+y)\\$

Step 1: Open the brackets

$= -6x+3y +2y +2(x+y)\\=-6x +3y + 2y +2x + 2y$

Step 2: Bring the similar variables together

$=-6x +2x \ +3y + 2y + 2y$

Step 3: Simplify by adding/subtracting the coefficients of the similar variables

$= - 4x +7y$

Step 4: Rearrange as required.

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4 years ago

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Please help i put max points for u!!

jek_recluse [69]

Answer:

Equation: y = $\frac{7}{4}$ x

21/2 cups of water

Step-by-step explanation:

Plug in 7 as y and 4 as x

7 = 4k

Find k

k = 7/4

Then plug k into th equation

y = 7/4 x

For the second part of the question:

Plug in x which is 6 into the bolded equation.

y = (7/4)(6) = 42/4 = 21/2 (simplified form)

21/2 cups of water

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3 years ago

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Mrs.smith earns $3500 a month. She saves $280 a month. Savings is what percent of her income?

arlik [135]

Answer:

3500 280

Step-by-step explanation:

280/3500

280 divided by 3500 times 100 (type this into a calculator)

its 8 her savings are 8 percent of her income

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3 years ago

Order the numbers in the table from least to greatest -6.6, 5.8, -6 3/4, 27/5, and -5 5/8

zvonat [6]

Answer : -6.6, 5.8, -6 3/4, 27/5, -5 5/8

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3 years ago

How much would each orange weigh if the total weight of all the oranges were distributed equally?

GaryK [48]

Answer:

Weight of each orange = Total weight of all the oranges ÷ Number of oranges

Step-by-step explanation:

Given: Total weight of all the oranges were distributed equally

To find: weight of each orange

Solution:

As total weight of all the oranges were distributed equally,

Number of oranges × weight of each orange = Total weight of all the oranges

Therefore,

Weight of each orange = Total weight of all the oranges ÷ Number of oranges

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3 years ago