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3 years ago

I need help with this problem.

Mathematics

1 answer:

liberstina [14]3 years ago

6 0

4050 divided by 3 = 1350
There is 4050 people in an arena and there is 3 sections of seats. How many people are in one section of seats?

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What is the volume of a hemisphere with a radius of 3.8in, rounded to the nearest tenth of a cubic inch

Pavel [41]

Answer: $114.9\ in.^3$

Step-by-step explanation:

Given

The radius of the hemisphere is $r=3.8\ in.$

The volume of a hemisphere is given by

$V=\dfrac{2}{3}\pi r^3$

Insert the value

$V=\dfrac{2}{3}\pi \times (3.8)^3\\\\V=114.9\ in.^3$

7 0

3 years ago

Which expression is equivalent to<br> 128x8,329 ? Assume y20 and 720

kaheart [24]

Answer:767600640

Step-by-step explanation: If 720 equals x, you multiply 128 by 720, and multiply the answer by 8,329.

8 0

3 years ago

PLS HELP ILL GIVE BRAINLIEST.

liberstina [14]

Answer:

Step-by-step explanation:

I think it increased by 20% I think or it’s 25% think

3 0

3 years ago

Rachel ordered early learning software for her daughter from an online retailer. Each item costs

andre [41]

Answer:

60$

Step-by-step explanation:

Shipping is 7.50 and the 7 items are 52.5 total

4 0

3 years ago

How do you find the area of a triangle when given only the lengths of three sides?

SashulF [63]

Answer:

Use Heron's formula; see below.

Step-by-step explanation:

Use Heron's formula.

Let the sides of the triangle have lengths a, b, and c.

$s = \dfrac{a + b + c}{2}$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

Example:

A triangle has side lengths 3, 4, and 5 units.

Find the area of the triangle.

$s = \dfrac{a + b + c}{2}$

$s = \dfrac{3 + 4 + 5}{2}$

$s = 6$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

$area = \sqrt{6(6 - 3)(6 - 4)(6 - 5)}$

$area = \sqrt{6(3)(2)(1)}$

$area = \sqrt{36}$

$area = 6$

3 0

2 years ago