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3 years ago

7

A book store is having a 30% off sale. Diary of a wimpy kid books are now $6.30 each. What was the original price of the books?

1 answer:

inn [45]3 years ago

5 0

6.30x0.3= 1.89

6.30+1.89=8.19

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What is the cross section created when a slice is made perpendicular to the 2 bases of a cylinder?

scZoUnD [109]

<span>The answer would be C. A cross section is defined is the intersection of a plane in a three-dimensional space. Therefore, cutting a cross section perpendicular to a cylinder would result to a rectangle where the height is equal to the height of the cylinder and its width is same as the diameter of the cylinder base.</span>

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3 years ago

carly has a piece of yarn that is 7.2 yards long. she needs to cut the yarn into pieces of fridge that each measur 0.3 yard long

SVEN [57.7K]

24 times evenly
7.2 / 3

4 0

3 years ago

In triangle VWX, side VW and side XV are congruent and the measure of X is 19 degrees. What is the measure of angle V?

Alchen [17]

Answer:

80.5°

Step-by-step explanation:

Every triangle is measured to be 180°. Subtract X which is 19 from 180

180-19=161

Because V and W are congruent, they are the same length. So you divide 161 by w to get 80.5

4 0

3 years ago

. Find the inverse of the function below on the given interval and write it in the form yequalsf Superscript negative 1 Baseline

Elena L [17]

Answer:

The inverse of the function is $f^{-1}(x)=\frac{x-5}{3}$ .

Step-by-step explanation:

The function provided is:

$f (x)=3x+5$

Let $f(x)=y$ .

Then the value of <em>x</em> is:

$y=3x+5\\\\3x=y-5\\\\x=\frac{y-5}{3}$

For the inverse of the function, $x\rightarrow y$ .

⇒ $f^{-1}(x)=\frac{x-5}{3}$

Compute the value of $f[f^{-1}(x)]$ as follows:

$f[f^{-1}(x)]=f[\frac{x-5}{3}]$

$=3[\frac{x-5}{3}]+5\\\\=x-5+5\\\\=x$

Hence proved that $f[f^{-1}(x)]=x$ .

Compute the value of $f^{-1}[f(x)]$ as follows:

$f^{-1}[f(x)]=f^{-1}[3x+5]$

$=\frac{(3x+5)-5}{3}\\\\=\frac{3x+5-5}{3}\\\\=x$

Hence proved that $f^{-1}[f(x)]=x$ .

8 0

3 years ago

0.4 divided by 0.08 show your work

Sergeeva-Olga [200]

Answer:

5

Step-by-step explanation:

Since we have not instructed to follow any kind of rule dividing, we can write in any form. Let's calculate it using fraction

$0.4:0.08=\frac{0.4}{0.08}$

We can multiply both the nominator and denominator with 100

$\frac{0.4}{0.08}=\frac{40}{8}=5$

The answer is 5.

We can also solve it as a division of fractions:

$\frac{4}{10} : \frac{8}{100} = \frac{4}{10} * \frac{100}{8} = \frac{10}{2} = 5$

8 0

3 years ago

Read 2 more answers