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2 years ago

Solve for a. 4(a 3)=12 4a a. no solution b. all real numbers c. −3 d. −1

Mathematics

2 answers:

vfiekz [6]2 years ago

8 0

Answer:

b.) All real numbers.

Step-by-step explanation:

4 (a + 3) = 12 + 4a

4a + 12 = 12 + 4a

4a + 12 - 12 = 12 + 4a - 12

4a = 4a

4a/4 = 4a/4

0 = 0

All possibilities of other real number can fit into the equation. Hence, the answer is b.) All real numbers.

Vladimir79 [104]2 years ago

5 0

4(a + 3) = 12 + 4a
4a + 12 = 12 + 4a
0 = 0

Therefore, the solution to the equation is all real numbers.

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Annie, Brianna & Carly are selling fruit boxes to raise money for their soccer team. All together the girls have sold 105 bo

GaryK [48]

Step-by-step explanation:

Annie = x

Brianna = y

Carly = z

Now,

x + y + z = 105 ...(1)

Carly has sold ten more than three times Brianna's sales.

z = 10 + 3y ...(2)

Brianna sold five more than Annie.

y = 5 + x ...(3)

Now,

z = 10 + 3y

z = 10 + 3(5 + x)

z = 10 + 15 + 3x

z = 25 + 3x

Now,

x + y + z = 105

x + (5 + x) + 25 + 3x = 105

5x + 30 = 105

5x = 105 - 30

5x = 75

5x/5 = 75/5

x = 15

So,

y = 5 + x

y = 5 + 15

y = 20

Now,

z = 25 + 3x

z = 25 + 3(15)

z = 25 + 45

z = 70

Thus,

Annie Sold 15 boxes

Brianna Sold 20 boxes

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2 years ago

What is the domain of f(x) = √x – 4 over the set of real numbers?

nikklg [1K]

Answer:

(2) x $\geq \\$ 4

Step-by-step explanation:

Given the sqrt(x), x $\geq \\$ zero

So, given sqrt(x -4), x -4 $\geq \\$ 0

Now solve for x

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x $\geq \\$ 4

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2 years ago

What is -x/3 = 9. Solve for x

vlada-n [284]

Note: I just noticed that you only have one negative sign. If you mean to put -9, change the sign to positive. If not, leave the answer.

Note the equal sign. what you do to one side, you do to the other. Isolate the x. First, multiply 3 to both sides

-x/3(3) = 9(3)

-x = 9(3)

-x = 27

Next, to isolate the x, divide -1 from both sides

-x/-1 = 27/-1

x = 27/-1

x = -27

-27 is your answer for x.

hope this helps

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3 years ago

Read 2 more answers

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Veseljchak [2.6K]

Answer: Colorado Bronze , I am pat wins, good legs lance wins

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3 years ago

Choose all the expression with accurately written descriptions

Kruka [31]

Answer:

All except 4th and last.

Step-by-step explanation:

The one that says equation is definitely wrong because it doesn't have an equal sign anywhere (there is nothing to solve there).

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They should have said 5 times x^2 there which actually means 5x^2.

So I don't like the way some of these are written but the only two that are really wrong are the 4th one and the last one.

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3 years ago