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3 years ago

A system of two equations is shown below. What will you need to multiply the

1 answer:

6 0

In order to solve this equation you must eliminate one of the variables.

By multiplying by -3 you eliminate the y variable, making A the correct answer.
-6x-3y=-66
5x+3y=29
-x=-37
x=37

If you would like further explanation let me know. :)

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Solve: 2x2-x = 21 {-7/2,3} {-3, 7/2}

Sergio039 [100]

Answer:

The answer is (-3,7/2)

Step-by-step explanation:

$2 {x}^{2} - x - 21 = 0 \\ (2x - 7)(x + 3) = 0 \\ 2x - 7 = 0 \: \: \: or \: \: x + 3 = 0 \\ x = \frac{7}{2} \: \: and \: x = - 3$

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3 years ago

The sum of two consecutive integers is 75. Find the number

Luba_88 [7]

Divide 75 by 2:

75 / 2 = 37.5

Now you need the whole number below 37.5 and the whole number above 37.5:

37 + 38 = 75

The numbers are 37 and 38

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3 years ago

10. Find the area of the shaded region.

Semenov [28]

Answer:

Area = 114

Step-by-step explanation:

We first must find the area of the larger outside rectangle.

Area = length × width

15 × 8 = 120

Then we find the area of the smaller inside rectangle.

4 × 1.5 = 6

Since the small rectangle is not shaded we have to subtract its area from the larger shaded rectangle's area.

120 - 6 = 114

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3 years ago

A worker uses 560 inches of steel wire to make 350 springs of the same size. At this rate how many inches of steel wire are need

eduard

Answer:

1.5 inches of steel

Step-by-step explanation:

450/300

=1.5 in.

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3 years ago

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Alex_Xolod [135]

Answer:

Step-by-step explanation:

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3 years ago