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4 years ago

How do you solve 7a+10=2a

Mathematics

2 answers:

amm18124 years ago

4 0

7a+10=2a -7a. -7a 10=-5a Divide by -5 and u get ur answer

sammy [17]4 years ago

3 0

Subtract 7a from both sides giving you 10=-5a and divide everything by 5. This gives you a=-2

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arsen [322]

Answer:

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Step-by-step explanation:

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3 years ago

When a store had Sold 2/5 of the shirts that were on display, they brought out another 30 from the stockroom. The store likes to

Inga [223]

Answer:

Part A) 3/5 is the total number of shirts remaining on display after selling 2/5

Part B) $x \geq 200$ (All real whole numbers greater than or equal to 200 shirts)

Part C) Initially on display were the amount of 200 or more shirts

Step-by-step explanation:

Let

x-------> total number of shirts on display

we know that

The inequality that represent the situation is

$(1-\frac{2}{5})x+30 \geq 150$

$(\frac{3}{5})x+30 \geq 150$

Part A) Explain what 3/5 means in the inequality

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Part B) Solve the inequality

we have

$(\frac{3}{5})x+30 \geq 150$

Subtract 30 both sides

$(\frac{3}{5})x \geq 150-30$

$(\frac{3}{5})x \geq 120$

Multiply by 5/3 both sides

$x \geq 120(5/3)$

$x \geq 200\ shirts\ on\ display$

Part C) Explain what the solution means in the situation

1) Initially on display were the amount of 200 or more shirts

2) 2/5 were sold and 120 or more shirts were left on display.

3) The store brought out another 30 shirts from the stockroom and placed them on display, for a total of 150 shirts or more on display

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3 years ago

30 more than the quotient of b and c

Aliun [14]

Answer:

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Step-by-step explanation:

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2 years ago

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Answer:

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Step-by-step explanation:

To find the number of different combinations possible, We first find the number of possibilities for each place, and then multiply all possibilities.

Number of possibilities for president: 5

Number of possibilities for vice-president: 6

Number of possibilities for secretary: 2

Number of possibilities for treasurer: 3

Number of different combinations: 5*6*2*3 = 180

(We can form 180 different groups of 1 president, 1 vice-president, 1 secretary and 1 treasurer)

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4 years ago

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padilas [110]

Answer:

The number of yards per inch would be 80.

Step-by-step explanation:

400 divided by 5 = 80.

Have a good day.

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3 years ago