3 years ago

Why is it not a system of linear equations?

1 answer:

8 0

This is only one equation. It is therefore not a system and you can not solve for two different variables y and z unless you have another equation to solve with. It.

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Juma earns $12.50 for each newspaper subscription he sells. He also earns $50 base salary each week. If he wants to earn $400 ne

Mandarinka [93]

He would need to sell 28 because
12.50*28=350 and 350+50=400

4 0

3 years ago

Anyone know how to find the length of x using the 30,60,90 method?

QveST [7]

9514 1404 393

Answer:

2√5

Step-by-step explanation:

The side ratios in a 30-60-90 triangle are ...

1 : √3 : 2

The longest side (x) is 2 times the length of the shortest side (√5), so ...

x = 2√5

6 0

3 years ago

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The perimeter of an equilateral triangle is 83 inches. If the length of each side is (2x -3), find the value of x.

Minchanka [31]

Answer:

$x = 15 \frac{1}{3}$

Step-by-step explanation:

Equilateral triangles have 3 equal sides.

Thus, perimeter of triangle

= 3(2x -3)

= 3(2x) +3(-3) (expand)

= (6x -9) inches

Given that the perimeter is 83 inches,

6x -9= 83

6x= 83 +9 (+9 on both sides)

6x= 92

$x = 15 \frac{1}{3}$

6 0

3 years ago

If there are 40 entries in a science fair how many ways can the students finish 1st, 2nd, and 3rd

ohaa [14]

The answer is 59,280 . To find you multiply 40 x 39 x 30 which 59,280

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3 years ago

Which placement of grouping symbols in the expression gives it a value of 22?

Zina [86]

It is C.

First, you have to do the problem in the (), so 3*4 = (12). 12 - 2 is 10. Next, you do the other () which is 5 + 7 which is 12. 12 + 10 = 22

7 0

3 years ago

Read 2 more answers