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2 years ago

What is the first step to solve for n in the following equation? 3n - 7 = 30

Mathematics

2 answers:

sergejj [24]2 years ago

5 0

Answer:

Simplifying

3n + 7 = 30

Reorder the terms:

7 + 3n = 30

Solving

7 + 3n = 30

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-7' to each side of the equation.

7 + -7 + 3n = 30 + -7

Combine like terms: 7 + -7 = 0

0 + 3n = 30 + -7

3n = 30 + -7

Combine like terms: 30 + -7 = 23

3n = 23

Divide each side by '3'.

n = 7.666666667

Simplifying

n = 7.666666667

Step-by-step explanation:

astra-53 [7]2 years ago

3 0

Answer:

3n - 7 = 30

3n = 30 + 7

3n = 37

n = 37/3

n = 12 1/3

Step-by-step explanation:

hmu if you need more help! :))

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A satellite in a 100-mile-high circular orbit around Earth has a velocity of approximately 17,500 miles per hour.If this velocit

AveGali [126]

Answer:

64.3 miles ( D)

Step-by-step explanation:

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angle between satellite and earth = 50°

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distance between surface of earth and satellite

x = cos ∅

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2 years ago

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ValentinkaMS [17]

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2 years ago

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2 years ago

A gardener wants to replant a circular bare spot in a yard with grass. The bare spot has a radius of 8 inches. What is the area

ch4aika [34]

The area of the bare spot the gardener needs to replant is 201 square feet

Step-by-step explanation:

We have to find the area of the circular bare spot

Given

Radius of bare spot = r = 8 inches

The formula for area of a circle is given by:

$Area=A = \pi r^2$

putting the value

$A = 3.14 * (8)^2\\= 3.14 * 64\\=200.96$

Rounding off to nearest foot

201 ft^2

Hence,

The area of the bare spot the gardener needs to replant is 201 square feet

Keywords: Area, radius

Learn more about area of circle at:

#LearnwithBrainly

7 0

1 year ago

What is the following product? (StartRoot 12 EndRoot + StartRoot 6 EndRoot) (StartRoot 6 EndRoot minus StartRoot 10 EndRoot)

Crank

Answer:

The product results in: $6\,\sqrt{2} -2\,\sqrt{30} +6-2\,\sqrt{15}$ , which agrees with answer A of the given choices.

Step-by-step explanation:

We need to apply distributive property for the product of two expressions each consisting of two terms, and also use the properties of products of radicals of the same root:

$(\sqrt{12} +\sqrt{6} )(\sqrt{6} -\sqrt{10} )=\\=\sqrt{12*6} -\sqrt{12*10} +\sqrt{6*6} -\sqrt{6*10} =\\=\sqrt{72} -\sqrt{120} +\sqrt{36} -\sqrt{60}$

and now, we extract as many factors we can from the roots to reduce them:

$\sqrt{72} -\sqrt{120} +\sqrt{36} -\sqrt{60} =\\=6\,\sqrt{2} -2\,\sqrt{30} +6-2\,\sqrt{15}$

5 0

2 years ago

Read 2 more answers