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2 years ago

Please help this is my last question and if I get it wrong I will have to redo the lesson

Mathematics

2 answers:

Ber [7]2 years ago

6 0

Answer:

-6.3 I would say

Step-by-step explanation:

First, multiply 9/5 x 7/2 and then subtract it. Since the number of pounds is not given, you should probably say -6.3

ddd [48]2 years ago

4 0

The answer is -6.3.

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What is the effect on the volume of a sphere if the radius is divided by 2?

uranmaximum [27]

Answer:

volume of sphere if radius is divided by 2 is 1/8 of volume of sphere with r radius.

Step-by-step explanation:

The formula to find volume of sphere is:

Volume of sphere = 4/3 π r^3

if radius is divided by 2 i.e r/2

Volume of sphere if r/2 = 4/3 π (r/2)^3

= 4/3 π r^3/8

= (4/3 π r^3) / 8

= (Volume of sphere 1)/8

So, volume of sphere if radius is divided by 2 is 1/8 of volume of sphere with r radius.

3 0

3 years ago

Read 2 more answers

Convert the following to rational numbers: (a) 0.12345, (b) 5.4321.

Komok [63]

Answer:

A) $\frac{2469}{20000}$

B) $\frac{54321}{100000}$

Step-by-step explanation:

To answer this question first we define what are rational numbers.

A rational number is a number that can be expressed in the form of a fraction $\frac{x}{y}$ , where x and y are integers and y ≠ 0.

a) 0.12345

This can be written in fraction form as

$\frac{12345}{100000}$

Now, we simplify this fraction to lowest form. Simplified form of the above fraction is $\frac{2469}{20000}$ . This simplified form was obtained by dividing both numerator an denominator by 5.

b) This number can be written in fraction form as $\frac{54321}{100000}$

Now, we simplify this fraction.

The simplified form of the above fraction is $\frac{54321}{100000}$ as the numerator and denominator have no common factor.

8 0

3 years ago

Which equation represents the line that passes through points (2, 0) and (6, -8)?

aleksandr82 [10.1K]

$\bf (\stackrel{x_1}{2}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{-8}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-8}-\stackrel{y1}{0}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{2}}}\implies \cfrac{-8}{4}\implies -2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{-2}(x-\stackrel{x_1}{2})\implies y=-2x+4$

4 0

3 years ago

a road sign gives information about traffic on busy highways . one sign shows "15 miles in 20 minutes." what is this speed in mi

fredd [130]

15 miles in 20 minutes.
there are 60 minutes in one hour.
Convert it from minutes to hour

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4 years ago

What type of math is adding subtracting of positive and negative numbers

allochka39001 [22]

Hello There!

It is Arithmetic.

Hope This Helps You!
Good Luck :)

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4 years ago