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SVETLANKA909090 [29]
3 years ago
15

If 2/5 of a number is added to 1/3 of the same number ,the sum is 22. What is the number?

Mathematics
2 answers:
exis [7]3 years ago
8 0
From the text of the task we can write the following equation:

\frac{2x}{5}+\frac{x}{3}=22\\
\\
Solving: multiplying \ all \ terms \ by \ 15:\\
\\
6x+5x=330\\
\\
11x=330\\
\\
x=\frac{330}{11}\\
\\
\boxed{x=30}
zubka84 [21]3 years ago
7 0
<u>2/5 x + 1/3 x = 22</u>

First of all, I've been answering so many of these things lately that I'm
getting really tired of 'x'.  Let's call the unknown number ' Q ' instead.

<u>2/5 Q + 1/3 Q = 22</u>

Multiply each side by 5 :

2Q + 5/3 Q = 110

Multiply each side by 3 :

6Q + 5Q = 330

Add the like terms on the left side:

11Q = 330

Divide each side by 11 :

<u>Q = 30</u> .
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Simplify an expression for the perimeter of the rectangle shown.
Zanzabum

The perimeter of the rectangle is P = (17.2x₊16.4).

Given that,

Length, l = 8.6x₊3

Width, b = 5.2

In the formula P=2l+2w, where l is the rectangle's length and w is its width, the perimeter P of a rectangle is determined. Using the formula A=l×w, where l is the length and w is the width, we can determine the area A of a rectangle.

We need to find the expression for the perimeter of the rectangle. The formula for the perimeter of the rectangle is given by :

P=2(l₊b)

Putting values of l and b in the above formula:

p = 2(8.6x ₊ 3 ₊ 5.2)

= 2(8.6x ₊ 8.2)

= 2(8.6x) ₊ 2(8.2)

= 17.2x ₊ 16.4

So, the required perimeter of the rectangle is 17.2x₊16.4.

Learn more about Area Perimeter here:

brainly.com/question/25292087

#SPJ9

4 0
1 year ago
Can someone help me with exercise #5 pls
jolli1 [7]

Answer/Step-by-step explanation:

Exercise 5:

a. 180 pages was read in 5 days

Unit rate = pages per day = 180 pages ÷ 5 = 36 pages per day.

b. Number of pages of the book = 765 pages

Unit rate = 36 pages per day

Number of days to read the book = 765/36 = 21.25

It will take Kirk about 22 days to finish reading the book.

5 0
3 years ago
I really need assistanceee. ^•^
Lana71 [14]
Y+6=5(x-4) so do distributive. y+6=5x-20 and then pass 6 to subtract y=5x-20-6 and y=5x-26
7 0
3 years ago
B) 144kg in the ratio 1 3.5​
Vlada [557]
So you add 13+5=18

Then you do 144/18=8

8x13=104 8x5=40

104+40=144✅

Answer= 104 : 40
6 0
3 years ago
PLEASE HELP 80 POINTS ALGEBRA 2
Romashka [77]

I do belive i did my math correct and I n.v should be the top one

8 0
3 years ago
Read 2 more answers
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