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sdas [7]
3 years ago
9

A hiker travels 12 km in 3 h.

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0
This is a ratio. 
12 km : 3 h 

simplify to-
4km : 1 h 

which means the hiker traveled 4 km per 1 hour. 
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RideAnS [48]
15-4X=-10-11X
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4 0
3 years ago
A student bought a piece of hard candy that is in the shape of a sphere. The candy has a radius of 3 centimeters.
worty [1.4K]

Volume of piece candy is 113.04 cubic centimeter

<em><u>Solution:</u></em>

A student bought a piece of hard candy that is in the shape of a sphere

<em><u>The candy has a radius of 3 centimeters</u></em>

Radius = 3 cm

Use 3.14 for π

<em><u>Volume of sphere is given as:</u></em>

V = \frac{4}{3} \times \pi \times r^3

Where, "r" is the radius of sphere

<em><u>Therefore, volume of candy is given as:</u></em>

V = \frac{4}{3} \times 3.14 \times 3^3\\\\V = 4 \times 3.14 \times 3^2\\\\V = 12.56 \times 9\\\\V = 113.04

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3 0
3 years ago
You are taking a multiple-choice test that has eight questions. each of the questions has three answer choices, with one correct
sukhopar [10]
Alright, so there are three answers. Start with 3, and for each question you answer, you can select three more, so it's 3*3 for two questions and so on, resulting in 3^8= 6561

This is assuming you mean <span>how many ways can you answer the test, not the question</span>
5 0
3 years ago
Starting in the year 1800, the population of the United States was recorded until the year 2000. The data is summarized below wi
krok68 [10]

Answer:

a = 73.84, b = -23.64, c = 83.97, d = 21.73

Step-by-step explanation:

1880:

The predicted value is:

f(80) = 1.363\cdot (80) - 35.2

f(80) = 73.84

The residual value is:

\Delta f = 50.2 - 73.84

\Delta f = -23.64

1920:

The predicted value is:

f(120) = 7.8 \cdot 1.02^{120}

f(120) = 83.97

The residual value is:

\Delta f = 105.7 - 83.97

\Delta f = 21.73

7 0
3 years ago
Read 2 more answers
The students at a school a assembly were divided into 4 equal groups there were 63 students in each group write and solve an equ
MissTica

Answer:

4 x 63 = 252

Step-by-step explanation:

There's 4 groups of 63 students.

4 0
4 years ago
Read 2 more answers
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