What is 160% of 19? What is 0.9% of 54? What is 15% of 376?

Answers

Answer 1

Answer: 160% of 19 is 30.4

Convert 160 into a decimal: 160%/100 = 1.6
Multiply the decimal by 19: 1.6 × 19 = 30.4 <-- our answer.
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0.9% of 54 is 0.486

Convert 0.9% in a decimal: 0.9%/100 = 0.009
Multiply the decimal by 54: 0.009 × 54 = 0.486 <-- our answer.
-------

15% of 376 is 56.4

Convert the percentage into a decimal: 15%/100 = 0.15
Multiply the decimal by 376: 0.15 × 376 = 56.4 <-- our answer.

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The perimeter of a rhombus is 28 centimeters. What is the length of each side of the rhombus?

Answers

All sides of a rhombus are congruent. 28/4 (four sides) =7

Each side is 7 cm long

Answer:

Each side is 7 cm long

What's the average rate of the graph from x = -2 to x = 0?

Answers

Answer:

-2

Step-by-step explanation:

I hope this helps you :)

-KeairaDickson

0.21 =0.7 true or false
0.21 = 0.3 true or false

Answers

Both false
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Hi.i need help with this question.

Workings Please.

1. A 210° sector of a circle of radius 10cm is used to make a cone. Find the radius of the base of the cone and it's height.

Answers

Answer: radius = 5.83 cm height = 8.12 cm

Step-by-step explanation:

First, let's find the circumference of the 210° section of the circle.

$C=2\pi r\bigg((\theta)/(360^o)\bigg)\n\n\nC=2\pi(10)\bigg((210^o)/(360^o)\bigg)\n\n\nC=(35)/(3)\pi$

The circumference of the the cone is $(35)/(3)\pi$ . We can use this to find the radius .

$C=2\pi r\n\n(35)/(3)\pi=2\pi r\n\n\n(35\pi)/(3\cdot 2\pi)=r\n\n\n(35)/(6)=r\n\n\n5.83=r$

When you fold the 210° section into a cone, the slant height is the original radius of 10. We can use the radius and slant height of the cone to form a right triangle with the height. Use the Pythagorean Theorem to find the height.

radius² + height² = slant height²

$(35)/(6)^2\ +\ h^2=10^2\n\n\n.\qquad \quad h^2=10^2-\bigg((35)/(6)\bigg)^2\n\n.\qquad \quad h=\sqrt{(6^2(10)^2-35^2)/(6^2)}\n\n\n.\qquad \quad h=\sqrt{(2375)/(36)}\n\n\n.\qquad \quad h=8.12$

An athletics track has a circular shape and its diameter measures 80 m. An athlete training on this track wants to run 10 km daily. Determine the minimum number of complete turns that it should take this track every day

Answers

Answer:

Step-by-step explanation:

First, we need to find the length of the circular track,

area of circle = $\pi d$

in this case,

$\pi d=80\pi$ meters

10km = 10000 meters

he needs to run $(10000)/(80\pi ) = 392.6\n$ times to complete his goal.

The measures of the exterior angles of a heptagon are x°, 2x°, 3x°, 4x°, 7x°, 9x°, and 10x°. Solve for x.

Answers

The value of x in the for an heptagon with exterior angles as x°, 2x°, 3x°, 4x°, 7x°, 9x°, and 10x° is 10.

What are heptagon:

Heptagons are polygons with seven sides.

The sum of exterior angles of a polygon is equals to 360 degrees.

Therefore,

x + 2x + 3x + 4x + 7x + 9x + 10x = 360°

36x = 360

divide both sides by 36

36x / 36 = 360 / 36

x = 10

Therefore, the value of x is equals to 10

learn more on polygon here: brainly.com/question/22387429?referrer=searchResults

Final answer:

The heptagon's exterior angles sum up to 360 degrees. Given the angles are x°, 2x°, 3x°, 4x°, 7x°, 9x°, and 10x°, summing and setting equal to 360 yields a value of 10 for x.

Explanation:

The subject of this question is Mathematics, specifically pertaining to angles and geometry. The question pertains to a heptagon, or a seven-sided polygon, and its exterior angles. We know that the sum of the exterior angles of any polygon is 360 degrees.

The question provides the measures of the exterior angles of a heptagon in terms of x: x°, 2x°, 3x°, 4x°, 7x°, 9x°, and 10x°. Therefore, to find the value of x, we need to solve the equation x + 2x + 3x + 4x + 7x + 9x + 10x = 360. That results in 36x = 360, and so .

Learn more about Angles and Geometry here:

brainly.com/question/16836548

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