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xxTIMURxx [149]
3 years ago
8

Plz solve and explain step by step for me anyone​

Mathematics
1 answer:
Musya8 [376]3 years ago
7 0

Answer:

First blank on top of 4 is x.

Second blank under 5x is 8.

Step-by-step explanation:

\frac{3x}{8}+\frac{?}{4}=\frac{5x}{*}

We want to find the common denominator so we can combine the fractions on the left.

The common denominator we will go for is 8 since 4(2) is 8 and 8(1)=8.

So I'm going to multiply second fraction by 2/2 giving me:

\frac{3x}{8}+\frac{2?}{8}=\frac{5x}{*}

Now that the denominators are the same we can write the sum as one fraction:

\frac{3x+2?}{8}=\frac{5x}{*}

So 3x+2?=5x if ?=x since 3+2=5.

Now *=8 so both sides can have the same denominator.

Test:

\frac{3x}{8}+\frac{x}{4}

Multiply second fraction by 2/2:

\frac{3x}{8}+\frac{2x}{8}

\frac{3x+2x}{8}

\frac{5x}{8}

You might be interested in
Simplify:<br> 5/4x-8y-1/4x+7y+3<br> A)x-y+3<br> B)3/2x+y+3<br> C)3/2x-y+3<br> D)x+y+3
Dovator [93]
<span>A)x-y+3 is your answer 

Proof:

(5 x)/4 - 8 y - x/4 + 7 y + 3
Put each term in (5 x)/4 - 8 y - x/4 + 7 y + 3 over the common denominator 4: (5 x)/4 - 8 y - x/4 + 7 y + 3 = (5 x)/4 - (32 y)/4 - (x)/4 + (28 y)/4 + 12/4:
(5 x)/4 - (32 y)/4 - x/4 + (28 y)/4 + 12/4
(5 x)/4 - (32 y)/4 - x/4 + (28 y)/4 + 12/4 = (5 x - 32 y - x + 28 y + 12)/4:
(5 x - 32 y - x + 28 y + 12)/4
Grouping like terms, 5 x - 32 y - x + 28 y + 12 = (28 y - 32 y) + (5 x - x) + 12:
((28 y - 32 y) + (5 x - x) + 12)/4
28 y - 32 y = -4 y:
(-4 y + (5 x - x) + 12)/4
5 x - x = 4 x:
(-4 y + 4 x + 12)/4
Factor 4 out of -4 y + 4 x + 12:
(4 (-y + x + 3))/4
(4 (-y + x + 3))/4 = 4/4×(3 + x - y) = 3 + x - y:
Answer:  3 + x - y
</span>
6 0
3 years ago
The length of each side of a square was decreased by 2 inches so the perimeter is now 49 inches. What was the original length of
aleksley [76]

The Original length of each side of square was 14.25 inches.

Step-by-step explanation:

Perimeter of a square is given by:

Perimeter = 4 * side

Let x be the original length of each side of square

So

decreasing 2 inch will mean

x-2

Perimeter of square after reducing 2 inches from each side

4(x-2) = 49\\4x-8 = 49\\4x = 49+8\\4x = 57\\\frac{4x}{4} = \frac{57}{4}\\x = 14.25

So,

The Original length of each side of square was 14.25 inches.

Keywords: Perimeter, square

Learn more about perimeter at:

  • brainly.com/question/5922969
  • brainly.com/question/6013189

#LearnwithBrainly

5 0
3 years ago
12.) 15 + (-15) + 12
erica [24]
15-15+12
0+12
12
.........
6 0
3 years ago
Read 2 more answers
The pizza shop owner tells Mr. Lopez that 3 jumbo cookies can feed 10 students.
givi [52]

Answer:

j(x) = [ (3/10) cookie/student ]x

Step-by-step explanation:

The "unit rate" here is  

3 jumbo cookies

------------------------- = (3/10) cookie/student

       10 students

Then the number of cookies needed to feed x students is

j(x) = [ (3/10) cookie/student ]x

5 0
3 years ago
Please help me I need help and please make sure your right <br><br> THANK YOU :)
Triss [41]

I got the following answer 484 you didn't say you needed it explained so I hope this helps.


7 0
3 years ago
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