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3 years ago

What number :Increased by 130% is 69 i rlly need help!!!

Mathematics

2 answers:

Diano4ka-milaya [45]3 years ago

7 0

Answer:

Step-by-step explanation:

The unknown number is x.

Start with x.

To increase x by 130%, you need to add 130%of x to x.

x + 130% of x

The sum equals 69.

x + 130% of x = 69

x + 130% * x = 69

1x + 1.3x = 69

2.3x = 69

x = 30

Answer: The number is 30.

Murrr4er [49]3 years ago

3 0

Answer:

53.076923

Step-by-step explanation:

130% as a decimal is 1.3

Divide 69 by 1.3:

69 /1.3 = 53.076923

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It takes 24 megabytes to store 144 songs on a music player. What is the greatest number of songs that 60 megabytes could store?

givi [52]

Option B

We can store a total of 360 songs in 60 megabytes of space.

Solution:

It is given to us that It takes 24 megabytes to store 144 songs on a music player. We have been asked to find out what is the greatest number of songs that 60 megabytes could store.

To solve this question we can use the unitary method.

We will first find out how many songs can be stored in 1 megabyte. This can be done as follows:

$=\frac{144}{24}=6$

Therefore, we can store 6 songs in 1 megabyte.

So, in 60 megabyte we can store the following number of songs:

$=60 \times 6=360$

So, we can store a total of 360 songs in 60 megabytes.

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3 years ago

What is the value of k in the equation k/3 - 5 = 34? 11 1/3 13 102 117

mestny [16]

1. Add 5 to both sides

k/3 = 34 + 5

2. Simplify 34 + 5 to 39

k/3 = 39

3. Multiply both side by 3

k = 39 * 3

4. Simplify 39 * 3 to 117

k = 117

6 0

3 years ago

Read 2 more answers

Question 1

Alex777 [14]

Riki ...
Most questions on Brainly offer 5 points in return for answering one question,
but here you've listed five of them to be answered for 5 points. That's kind of
much.
Also, it's not clear what cylinders Question-2 and Questioin-3 refer to.
They might be the two pictures under the question, but we don't rally know.
Fortunately, all five of your questions are answered with the same formula ...
the formula for the volume of a cylinder.
Here it is:

 Volume of a cylinder = ( π ) · (radius)² · (height or length) .

 V = π R² H .

That's it. That's all you need to answer any or all of the five questions.
So I've actually given you everything you need to answer them, and in
doing that, I've already earned 5 points. But, being the ever helpful guy
that I am, I'll work out two of the questions for you, to show you how to
use the formula.

Question #1). A cylinder has a radius of 14 m and a height of 6 m.

 Volume = π R² H

 = (π) (14m)² (6m)

 = (π) (196m²) (6m)

 = 1,176 π m³ = 71,763,930 π in³

(Notice how confusingly and sloppily the question is written . . .
the dimensions of the cylinder are given in meters, but the
answer choices are listed in cubic-inches. I've shown the
answer in both units.)

Question 5). A can has a radius of 2.8 feet and holds 86.21 cubic feet.

 Volume = π R² H

 86.2 ft³ = π (2.8 ft)² (Height)

86.2 ft³ = π (7.84 ft²) (Height)

 Height = (86.2 ft³) / (7.84 π ft²)

= 3.5 ft

5 0

3 years ago

What is the slope-intercept form of the equation of the line perpendicular to y = -x + 10 and passing throught the point (-2,7)?

notka56 [123]

Answer:

The slope-intercept form equation of the line perpendicular to y = $-\frac{1}{2}$ x + 10 and passes through point (-2, 7) is y = 2x + 11 ⇒ Not in the choices

Step-by-step explanation:

The slope-intercept form of the linear equation is y = m x + b, where

m is the slope

b is the y-intercept

The product of the slopes of the perpendicular lines is -1, if the slope of one is m, then the slope of the other is $-\frac{1}{m}$

To find the slope of the perpendicular line to a given line reciprocal the slope of the given line and change its sign

∵ The equation of the given line is y = $-\frac{1}{2}$ x + 10

→ Compare it with the form of the equation above

∴ m = $-\frac{1}{2}$

→ Reciprocal it and change its sign to get the slope of the ⊥ line

∴ m⊥ = 2

→ Substitute in the form of the equation above

∴ y = 2x + b

→ To find b substitute x and y in the equation by the coordinates of

a point on the line

∵ The line passes through the point (-2, 7)

∴ x = -2 and y = 7

∵ 7 = 2(-2) + b

∴ 7 = -4 + b

→ Add 4 to both sides to find b

∵ 7 + 4 = -4 + 4 + b

∴ 11 = b

→ Substitute it in the equation

∴ y = 2x + 11

The slope-intercept form equation of the line perpendicular to y = $-\frac{1}{2}$ x + 10 and passes through point (-2, 7) is y = 2x + 11

Note: The answer is not in the choices

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2 years ago

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Citrus2011 [14]

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2 years ago

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