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lora16 [44]
3 years ago
12

What's the answer for this problem number 6 and how did you get your answer?

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
4 0

\frac{7}{b + 5} =  \frac{10}{5} \\

\frac{7}{b + 5} = 2 \\

Multiply the sides of the equation by ( b + 5 ) :

7 =2 \times (b + 5)

7 = 2b + 10

Subtract the sides of the equation minus 10 :

7 - 10 = 2b

- 3 = 2b

Divided the sides of the equation by 2 :

b =  -  \frac{3}{2}  \\

____________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

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If the cost of a dozen eggs rises from .99 to 1.34 what is the percent of the increase
Amiraneli [1.4K]
To find the percent of increase get the difference between the prices and then divided by the oringinal price and then time that by 100

increase = \frac{1.34 - .99}{.99} \times 100
8 0
3 years ago
What is the square number of 13 27 81 21 43 48 23 39 45
Setler [38]

The given numbers are 13, 27, 81, 21,43, 48,23,39,45.

Square number is that number which is a perfect square means if you multiply a number by itself the number you obtained is a perfect square i.e it's square root is a natural number.

√13=not a natural number

√27=√3×√3×√3=3√3=irrational number

√81=√9×√9=9=a natural number

√21=not a natural number

√43=not a natural number

√48=4√3=not a natural number

√23=not a natural number

√39=not a natural number

√45=3√5=not a natural number

So, out of following numbers 13 27 81 21 43 48 23 39 45→81 is the only square number.

8 0
3 years ago
Read 2 more answers
(x2 - 2)(x + 1) = (x^)(5x)+(x2)() + (-2)(5x) + (-2)(1) is an example of:
OLga [1]

Answer:

B

Step-by-step explanation:

It is complex conjunction

3 0
3 years ago
What is the solution to this equation 10x-15x+5=-45+20
nataly862011 [7]

Answer:

<h2>6</h2>

Step-by-step explanation:

10x - 15x + 5 =  - 45 + 20

Collect like terms

- 5x + 5 =  - 45 + 20

Calculate the sum

- 5x + 5 =  - 25

Move constant to RHS and change its sign

- 5x =  - 25 - 5

Calculate

- 5x =  - 30

Divide both sides of the equation by -5

\frac{ - 5x}{ - 5}  =   \frac{ - 30}{ - 5}

Calculate

x = 6

Hope this helps...

Best regards!!

8 0
3 years ago
Read 2 more answers
Is 50 a multiple of 5 ?
Margarita [4]
Yes, 50 is a multiple of 5 because 10 x 5=50. 
3 0
3 years ago
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