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3 years ago

What is a expression that contains at least one variable

Mathematics

2 answers:

Vikki [24]3 years ago

7 0

<span>a expression that contains at least one variable is called Algebraic Expression
</span>

NeX [460]3 years ago

3 0

4x (-2s+4x^2)
is an multiplication expression

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What is the value of y in the solution to the following system of equations? 5x − 3y = −11 2x − 6y = −14 −1 0 1 2

Alekssandra [29.7K]

5x - 3y = -11 (×2)
2x - 6y = -14 (x5)

10x - 6y = -22
10x - 30y = -70
---------------------- -
24y = 48
y = 2

5 0

2 years ago

Suppose a company did $2,000,000 in annual maintenance in 2013 and expects 80% of those to renew for 2014. Suppose that product

Paha777 [63]

Answer:

$1,750,000

Step-by-step explanation:

The company did $2,000,000 in annual maintenance in 2013 and expects 80% of those to renew for 2014.

That will result in annual maintenance of:

(80 / 100) * 2000000 = $1,600,000

The product sales for 2013 were 2,000,000 (which include free maintenance in 2013) and 75% of those were expected to pay annual maintenance of 10% of the purchase price in 2014.

That will result in annual maintenance of:

(75 / 100) * (10 / 100) * 2000000 = $150,000

Therefore, the total annual maintenance will be:

$1600000 + $150000 = $1,750,000

6 0

2 years ago

Select the correct answer. Which of the following is a solution to 4sin2x − 1 = 0? A. 30° B. 60° C. 90° D. 120°

vesna_86 [32]

Answer:

The correct option is A.

Step-by-step explanation:

The correct form is:

4sin^2 x − 1 = 0

First step is add 1 to both sides:

4sin^2 x-1+1=0+1

4sin^2 x=1

Now to eliminate 4 divide both sides by 4

4sin^2 x/4=1/4

sin^2 x=1/4

Take square root at both sides

√sin^2 x = √1/4

sinx = 1/2

Thus the correct option is 30° ....

6 0

2 years ago

Read 2 more answers

Given the radius is 6 inches, what is the area of the circle?

enyata [817]

Answer:

I wasn't sure how you're supposed to answer, so the answers for each scenario are in the explanation!

Step-by-step explanation:

$A=\pi r^{2}$

$A=\pi (6^{2})$

$A=\pi (36)$

From here, there can be a few different answers:

The exact answer is A=36π inches^2.

If you need to round, round this to wherever you need it: A=113.0973355292326... inches^2

If you're using 3.14 for pi, the answer is A=113.04 inches^2.

8 0

3 years ago

2.50c+6a=6344.50 <br> Find each variable

Ksju [112]

Answer:

c=2.4a+2537.8

a=-2.5/6c+1057.4

Step-by-step explanation:

solve for c:

2.50c+6a=6344.50

-6a -6a

2.50c=-6a+6344.50

/2.50 /2.50 /2.50

c=2.4a+2537.8

solve for a:

2.50c+6a=6344.50

-2.5c -2.5c

6a=-2.5c+6344.50

/6 /6 /6

a=-2.5/6c+1057.4

6 0

3 years ago