All categories

3 years ago

the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39 find the number

2 answers:

4 0

Say x is the number

7x +3 = 39 -2x
Add 2x to each side
9x +3 =39
Subtract 3 from each side
9x =36
Divide by 9 on each side
x=4

Hope this helped

Neporo4naja [7]3 years ago

4 0

Answer: The required number is 2.

Step-by-step explanation: Given that the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39.

We are to find the number.

Let x represents the given number.

Then, according to the given information, we have

$7(x+3)=39-2x\\\\\Rightarrow 7x+21=39-2x\\\\\Rightarrow 7x+2x=39-21\\\\\Rightarrow 9x=18\\\\\Rightarrow x=\dfrac{18}{9}\\\\\Rightarrow x=2.$

Thus, the required number is 2.

You might be interested in

How many 3/4 ounce spoonfuls of sugar<br> are in a 5 1/2 ounce bowl?<br> show work please

klasskru [66]

Answer: $\frac{22}{3}$

Step-by-step explanation: Divide

$5\frac{1}{2}\div \frac{3}{4}$

Step 1: Convert the mixed number to improper fraction

$5 \frac{1}{2} =\frac{11}{2}$

$= \frac{11}{2}\div \frac{3}{4}$

Step 2: Reciprocal

$\frac{11}{2}\times \frac{4}{3}$

Step 3: Divide the common factors

$4 \div 2 = 2\\\\=\frac{11}{1}\times \frac{2}{3}$

Step 4: Multiply

$\frac{11\times \:2}{1\times \:3}\\\\=\frac{22}{3}$

5 0

3 years ago

What is the area, in square feet, of the shape below? Express your answer as a fraction in simplest form.

Ahat [919]

4/3 • 5/3 = 20/9 divided by 2 = 10/9

7 0

3 years ago

Anyone please help me

scZoUnD [109]

I think it’s 5/4 because from (0,-1) you go up 5 and then left 4

5 0

3 years ago

Read 2 more answers

Ben works at a mobile phone store, where he earns a flat $80 for each 8-hour shift. He also earns a commission of $20 for each p

horrorfan [7]

Answer:

Step-by-step explanation:

he makes 80 dollars for a normal shift

20 dollars for every phone he sells 20m

and e is the total amount

e=20m+80

4 0

3 years ago

What is -7 2/3 + (-5 1/2) + 8 3/4

Veseljchak [2.6K]

Hey there :)

$-7 \frac{2}{3} = - \frac{23}{3}$
$-5 \frac{1}{2} = -\frac{11}{2}$
$8 \frac{3}{4} = \frac{35}{4}$

$- \frac{23}{3} - \frac{11}{2} + \frac{35}{4}$

We need to change all fractions to have a common denominator

Lets see:
Multiples of 2: 2 , 4 , 6 , 8 , 10 , 12
Multiplies of 3: 3 , 6 , 9 , 12
Multiplies of 4: 4 , 8, 12

The common denominator is 12
2 x 6 = 12
3 x 4 = 12
4 x 3 = 12

= $-\frac{23(4)}{3(4)} - \frac{11(6)}{2(6)} + \frac{35(3)}{4(3)}$
= $- \frac{92}{12} - \frac{66}{12} + \frac{105}{12}$

We need to add the numerators while keeping the same denominator
= $- \frac{53}{12}$
= $-4 \frac{5}{12}$

7 0

3 years ago