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3 years ago

What value of y makes the equation true? -7/12 = y/-36 A -21 B 28 C -28 D 21

Mathematics

2 answers:

AVprozaik [17]3 years ago

7 0

Answer:

D) 21

Step-by-step explanation:

y= -7/12× -36

or, y= -7×-3

or, y= 21

Deffense [45]3 years ago

4 0

Answer:

Step-by-step explanation:

Given

$\frac{-7}{12}$ = $\frac{y}{-36}$ ( cross- multiply )

12y = 252 ( divide both sides by 12 )

y = 21 → D

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3 years ago

What is the value of x in the solution

krok68 [10]

Answer:

$x =\dfrac 47$

Step-by-step explanation:

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2 years ago

Camden has an action figure collection of 380 action figures. He keeps 55% of the action figures on his wall. How many action fi

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

The cost of 7 chairs and 2 tables is equal.If the cost of 6 chairs and 5 tables is 10575, find the cost of 12 chairs.

Igoryamba

Answer:

5400

Step-by-step explanation:

Let x represent the cost of a chair and y represent the cost of a table. We can use this to set up a system of equations:

7x=2y

6x+5y=10575

We can solve this system using substitution.

Start by rewriting the first equation in terms of x.

$7x=2y\\\text{Divide both sides by 7}\\x=\frac{2}{7}y$

Substitute this into the second equation:

$6(\frac{2}{7}y)+5y=10575\\\frac{12}{7}y+5y+10575\\\frac{12}{7}y+\frac{35}{7}y=10575\\\frac{47}{7}y=10575$

Multiply both sides by 7

$47y=74025$

Divide both sides by 47

$y=1575$

This means...

$7x=2(1575)\\7x=3150$

Divide both sides by 7

$x=450$

One chair costs 450. Now, multiply this number by 12 to find the cost of 12 chairs.

$450*12=5400$

12 chairs cost 5400.

7 0

2 years ago