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3 years ago

In need of help of these math questions

Mathematics

1 answer:

vitfil [10]3 years ago

4 0

Answer:

1. 4

2. 6.4

3. 10.0828313253

Explanation:

15/12=1.25

8/1.25=6.4

3. ill write explanation for 3 later im occupied those are the correct answers

problably they want you to round to nearest tenth

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Which is equivalent?

olga_2 [115]

Answer:

Step-by-step explanation:

Given

$\frac{x}{\sqrt{2} }$

Multiply numerator/ denominator by $\sqrt{2}$ to rationalise the denominator

= $\frac{x\sqrt{2} }{\sqrt{2}(\sqrt{2}) }$

= $\frac{x\sqrt{2} }{2}$ → A

8 0

2 years ago

What is the median of 4, 6, 9, 11, 8, 13, 12

Talja [164]

Write the numbers in order first,
4, 6, 8, 9, 11, 12, 13
Middle number in sequence is the median, in this case median is 9.

5 0

3 years ago

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13. The radius of Earth is approximately 6.4 x 100 m. Use the formula V = 4/3pr^3

romanna [79]

<u>We are given</u>

Radius of Earth; 6.4 x 100 meters = 640 meters

Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

$\implies \text{Volume of sphere =} \ \dfrac{4\pi r^{3}}{3}$

When we substitute the radius in the formula, we get;

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)^{3}}{3}$

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}$

Take π as 3.14

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}$

$\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}$

Simplify the numerator;

$\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}$

$\implies \text{Volume of sphere} = \dfrac{3292528640}{3}$

Divide the numerator by 3;

$\implies \text{Volume of sphere} = \dfrac{3292528640}{3}$

$\implies \text{Volume of sphere} = \boxed{1097509546.67 \ \text{m}^{3} } \ \ \ (\text{Estimated})$

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2 years ago

What is the next term for the given arithmetic sequence?<br><br> -3, -2.25, -1.5, -0.75, ...

Rasek [7]

0. Each time you're adding 0.75, so adding $-0.75+0.75=0$ !

5 0

3 years ago

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4. FLOWERS Bethany placed a bouquet of roses in a vase full of water. Each day she recorded how much water had evaporated from t

Ksju [112]

Answer:

A x 5

Step-by-step explanation:

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2 years ago

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