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2 years ago

PLS HELP ITS URGENT!!

Mathematics

1 answer:

DiKsa [7]2 years ago

5 0

Answer:

SA= 28 in^2

V= 14 in^3

Step-by-step explanation:

circumference= 2πr

9.4 = 2πr

r = 1.496

surface area of a ball = $4\pi r^{2}$

= $4\pi (1.496)^{2}$

=28 in^2

volume of a ball= $\frac{4}{3} \pi r^{3}$

= $\frac{4}{3} \pi (1.496)^{3}$

=14 in^3

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How do you solve this ???

galina1969 [7]

First you have to figure out how much a video game costs and how much a used one costs
Then you plug in the costs of the video games into Janets equation 120=3x+y
(x= video games and y=used video games)
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3 years ago

Help it’s due in 10 mind

aleksley [76]

Define the population, decide on the sample size (aka what percentage of that population)

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2 years ago

Brianna has 4 pink bracelets. One third of all her bracelets are pink. How many bracelets does brianna have?

aivan3 [116]

Hey there!

Let's first evaluate this problem, and the keyword we need to use. The problem says that out of the total number of bracelets Brianna has, x, 1/3 of them are pink. The reason the word of is so important throughout math is that it signifies multiplication. For example, 1/2 of 10 is 5 because 1/2 times 10 is 5.

Now, to apply that to this situation, we need to create an equation, a mathematical statement that indicated the equilibrium or equality of two values. Since we have 1/3 of all her bracelets, x is four, we can set up our equation. Here's another good keyword- is. Is signifies an equation, because it means "equal to" mathematically. For example, 5 is equal to 20/4.

We have:

1/3(x) = 4

(One-third of x, the total amount of bracelets, is four.)

We don't want that fraction there. In order to get rid of it and keep the expression equal, we multiply both sides by 3. We have,

x = 12

Hope this helps!

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3 years ago

Can anyone tell me correctly

BaLLatris [955]

$\large\underline\red{\sf \implies Solution :- }$

1) A figure formed by line segments only is called a polygon  .

2) Perimeter of a regular polygon is Number of sides × Measure of each side .

3) Perimeter of a irregular polygon is sum of all sides .

4) Two circles with same centre but different radii is called Concentric circles.

5) Ratio of circumference of circle to its diameter is pie  and is named by Greek letter π .

6) Distance around the circle is called circumference.

7) A chord of the circle contains exactly two points on a circle.

8) 1 hectare = 10,000 m²

<h3>I hope it helped ツ</h3>

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3 years ago

Can anyone help me with these three questions

iren2701 [21]

Sure, what are the questions?

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3 years ago