All categories

3 years ago

Please explain? ?????????

Mathematics

2 answers:

s2008m [1.1K]3 years ago

7 0

To answer set up a proportion.
You are trying to find how many books are in the entire book given 80% of the pages which is 180. Thus you put 80 over 100 and 180 over X(total number of pages). Then you cross multiply to solve for x.

marissa [1.9K]3 years ago

5 0

Remember the formula is/of. you have to put 180 pages over x because u don't know the total. then make that equal 80 over 100 to represent 80%. solve for the proportion how the person before me answered

You might be interested in

Vika [28.1K]

$\bf \qquad \qquad \textit{ratio relations}
\\\\
\begin{array}{ccccllll}
&Sides&Area&Volume\\
&-----&-----&-----\\
\cfrac{\textit{similar shape}}{\textit{similar shape}}&\cfrac{s}{s}&\cfrac{s^2}{s^2}&\cfrac{s^3}{s^3}
\end{array} \\\\
-----------------------------\\\\$

$\bf \cfrac{\textit{similar shape}}{\textit{similar shape}}\qquad \cfrac{s}{s}=\cfrac{\sqrt{s^2}}{\sqrt{s^2}}=\cfrac{\sqrt[3]{s^3}}{\sqrt[3]{s^3}}\\\\
-----------------------------\\\\
\cfrac{s^3}{s^3}\implies \cfrac{216}{1000}\implies \cfrac{\sqrt[3]{216}}{\sqrt[3]{1000}}\implies \cfrac{s}{s}\impliedby \textit{similarity ratio}$

and simplify it away

3 0

3 years ago

5 1/2 x 3 3/4 please help

Svetach [21]

Answer:

5 1/2 is also known as 11/2 and 3 3/4 is also know as 15/4. Now times 11/2 x 15/4. 165/8 is the answer i think

Step-by-step explanation:

you make everything an improper fraction then times it

3 0

3 years ago

Someone please help me I’ll give out brainliest please dont answer if you don’t know

mojhsa [17]

-96 is the answer! Yup

6 0

3 years ago

On the map, the school and the sports park are 12 centimeters apart.

Nezavi [6.7K]

Answer:

Step-by-step explanation:

On the map, the school and the sports park are 12 centimeters apart.

scale 4cm : 5km

find;

What is the actual distance between the school and the park?

solution:

X km 5 km

cross multiply:

4 cm X km = 12 cm (5 km)

X = <u>12 cm (5 km)</u>

4 cm

X = 15 km

therefore, the distance between the school and the sports park is 15 km

8 0

4 years ago

A stack of 60 identical books at the book store was 135 inches tall.

LekaFEV [45]

To find out the thickness of each book you would have to divide 135 inches by 60 to get 2.25 .

135 ÷ 60 = 2.25

so the answer would be A

5 0

3 years ago