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3 years ago

What is the solution to the equation? r/7.1 = 4.2

Mathematics

2 answers:

victus00 [196]3 years ago

8 0

Answer:

r = 29.82

Step-by-step explanation:

We have the equation r/7.1 = 4.2 and are asked to solve for r.

To solve, we need to isolate r, do as followed and multiply 7.1 from both sides:

r/7.1 = 4.2

r = 29.82

AnnZ [28]3 years ago

5 0

Answer:

r = 29.82

Step-by-step explanation:

$\frac{r}{7.1} = 4.2$

The opposite of division is multiplication, you will need to multiply 7.1 to both sides.

That would leave:

r = 4.2 (7.1)

r = 29.82

If there are further instructions for rounding, you can round.

Have a nice day!

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Andrew [12]

Answer:

Step-by-step explanation:

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To find the slope, use the formula k=y2-y1/x2-x1. To use this formula, you need two points. The first point, point M, is given to you. The second point can be the y-intercept, point (0, 1). Now, apply the formula to find the slope: k=3-1/1-0

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We now have the equation y=2x+1.

The next step is to graph the line.

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3 years ago

Which system of linear inequalities is graphed?

ANEK [815]

To determine the system of inequality that has been graphed, we need to be very smart.

Observe that all the equations are the same.

Also note that all the lines are solid. This should tell you that the inequities should involve.

$\ge \:or\: \le$

Therefore the answer is between option A and B.

So we choose a point in the solution region to discriminate between A and B.

Let us choose the origin since that is easy to evaluate.

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$y\le 3x-1\:and\: x+ 3y \ge 6$

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We now substitute into option B

$y\ge 3x-1\:and\: x+ 3y \le 6$

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3 years ago

Which are sums of perfect cubes? Check all that apply.

vichka [17]

I think these are the sums of perfect cubes.

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4 years ago

40•(420:x-37)=200 помогите решить уравнение

miv72 [106K]

40•(420:x-37)=200 означает $40(\frac{420}{x}-37)=200$

разделите обе стороны на 40

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добавить 37 с обеих сторон

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умножить обе стороны на х
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разделите обе стороны на 42
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3 years ago

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Leokris [45]

The geometry was developed by a Greek mathematician called Euclid and developed to meet some practical need in surveying, construction, astronomy, and various crafts.

In this question,

Early geometry was a collection of empirically discovered principles concerning lengths, angles, areas, and volumes, which were developed to meet some practical need in surveying, construction, astronomy, and various crafts.

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2 years ago