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2 years ago

Systems of equations have one solution.. . Always. . Sometimes. . Never

1 answer:

4 0

Systems of equations have one solution SOMETIMES.

There are equations wherein the lines intersect.
There are equations wherein the lines do not intersect so no solutions.
Thus, the answer is sometimes.

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8×(30+2)=(8×_)+(8×2)

irinina [24]

Using the distributive property, a(b+ c) = ab + ac. In this case, b is 30, so the blank is 30.

6 0

3 years ago

Read 2 more answers

What happens to the energy not output by a machine

Sveta_85 [38]

Answer:

By using the energy conservation law, the input energy must be equivalent to the output energy. If you measured output energy is lower than your input energy, you have lost that difference of energy either in mechanical inefficiency (friction, heat, etc.) or an energy sink.

Thus, the energy not output by the machine is lost in the process within the machine.

Cheers.

5 0

3 years ago

The sketch shows two parallel lines cut by a transversal. Which pair of angles are alternate interior angles?

Likurg_2 [28]

Answer:

B) Angle 5 and angle 4

Step-by-step explanation:

Given

See attachment for sketch

See comment for options

Required

The alternate interior angles

Interior angles are such that they are located between the given parallel lines.

In the attached sketch, the interior angles are: 3, 4, 5 and 6

Alternate angles are at the opposite sides of the transversal

Hence:

<em>4 and 5 are alternate interior</em>

<em>3 and 5 are also alternate interior</em>

5 0

3 years ago

I dont understand the problem

Roman55 [17]

Answer:

equation of a line:

y = mx+c

1) find the gradient, m

$m = \frac{y2 - y1}{x2 - x1}$

$m = \frac{ - 4 - ( - 4)}{ - 10 - 1}$

$m = 0$

2) find y-intercept, c using coordinate (1,-4)

y = mx + c

-4 = 0(1) + c

c = -4

the equation of line:

y = mx+c

y = 0(x) + c

y = c

y = -4

6 0

3 years ago

A parallelogram with sides lengths of 5 inches and 12 inches and a height of 3 inches. Question What is the perimeter of this pa

UkoKoshka [18]

The perimeter of a shape is the sum of its lengths. A parallelogram has four sides with two pairs of equal sides. In this case, those sides are 5 inches and 12 inches. So, the perimeter is 12*2+5*2=24+10=34 inches.

8 0

3 years ago