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2 years ago

The expression3(x+6)-xcan be simplified to the form2x + a)What is the value of a?

Mathematics

1 answer:

timofeeve [1]2 years ago

8 0

Answer:

a = 18

Step-by-step explanation:

3(x+6)-x = 2x + a

Distribute

3x +18 -x = 2x+a

2x +18 = 2x+a

Subtract 2x from each side

18 = a

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Find two numbers if their difference is 16 and their ratio is 5:7.

myrzilka [38]

Let us say that the numbers are x and y. The given clues are:

1. x – y = 16 (so x is the larger number)

2. y / x = 5 / 7

rewriting eqtn 2 in terms of y:

y = (5/7) x

combining 1 and 2:

x – (5/7) x = 16

(2/7) x = 16

x = 56

y = (5/7) x = 40

So the two numbers are 56 and 40.

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3 years ago

Read 2 more answers

What to do when a negative number is subtracted from a positive number?

pentagon [3]

When you see the subtraction (minus) sign followed by a negative sign, turn the two signs into a plus sign. Thus, instead of subtracting a negative, you're adding a positive, so you have a simple addition problem.

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2 years ago

The temperature at 6.00 am was - 12 the temperature increased by 1/2 each hour for 6 hours what was the temperature in degrees F

Illusion [34]

Answer: -9 degrees Fahrenheit

Step-by-step explanation:

Given: Temperature at 6:00 AM = -12 degrees Fahrenheit

Temperature increased each hour = $\dfrac12$ degrees Fahrenheit

Temperature increase in 6 hours = $6\times\dfrac12=3\text{ degrees Fahrenheit}$

Temperature at noon = Temperature at 6:00 AM+Temperature increase in 6 hours

= -12+3 degrees Fahrenheit

= -9 degrees Fahrenheit

Hence, the temperature in degrees Fahrenheit at noon= -9 degrees Fahrenheit

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2 years ago

What does 0.5(-12p - 4) equal to?

laiz [17]

Answer:

Use the distributive property to solve this equation: a(-b - c) = -ab - ac

Step-by-step explanation:

1. 0.5(-12p - 4) =

-6p - 2 is the answer.

Hope this helped!!!!

~Shane

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3 years ago

A bag contains 39 colored marbles. There are 6 blue marbles, 14 red marbles, 8 yellow marbles, and 11 clear marbles. What is the

balu736 [363]

Answer:

$6:14=3:7$

Step-by-step explanation:

There are 6 blue marbles and 14 red marbles, so the ratio of blue marbles to red marbles $=6:14=3:7$

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1 year ago

The expression3(x+6)-xcan be simplified to the form2x + a)What is the value of a?​

The expression3(x+6)-xcan be simplified to the form2x + a)What is the value of a?