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Paraphin [41]
3 years ago
15

4-2(x+7)=3(x+5) can ya'll help me with the steps.

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
4 0

Answer:

x = -5

Step-by-step explanation:

4 - 2(x+7) = 3(x+5)

4 - 2*x - 2*7 = 3*x + 3*5

4 - 2x - 14 = 3x + 15

4 - 14 - 15 = 3x + 2x

-25 = 5x

x = -25/5

x = -5

Check:

4 - 2(-5+7) = 3(-5+5)

4 - 2*2 = 3(0)

4 - 4 = 0

maria [59]3 years ago
3 0

Answer:

x = -5

Step-by-step explanation:

4-2(x+7)=3(x+5)

Distribute

4 -2x-14 = 3x+15

Combine like terms

-2x-10 = 3x+15

Add 2x to each side

-2x-10+2x= 3x+15+2x

-10 = 5x+15

Subtract 15 from each side

-10-15 = 5x+15

-25 = 5x

Divide by 5

-25/5 = 5x/5

-5 =x

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Read 2 more answers
Below are the jersey numbers of 11 players randomly selected from a football team. Find the​ range, variance, and standard devia
padilas [110]

Answer:

Option(A) is correct

Jersey numbers are nominal data that are just replacements for names, so the resulting statistics are meaningless.

Step-by-step explanation:

The given data set in the question are ;33, 29, 97, 56, 26, 78, 83, 74, 65, 47, 58

the range can be determined by finding the highest value and subtract it to the lowest value. In this case the values are:

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mean of the data is the summation of all the numbers in the data set divided by the number of given samples.

Mean = (33 + 29 + 97 + 56+ 26 + 78 + 83 74+ 65 + 47 + 58)/11

= 647/11

Mean value =58.7

Now to find the variance of the data set by using below formular

σ²=[ (xᵢ -mean)²]/n-1

[(33-58.7)² +(29-58.7)²+( 97-58.7)²+( 56-58.7)²+( 26 -58.7)²+(78-58.7)²+( 83 -58.7)²+(74-58.7)²+( 65-58.7)²+( 47 -58.7)²+(58 -58.7)²]/10

Variance=546

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σ =√(variance)

σ =√(546)

Standard deviation= 23.4

Hence, the range is 71 ,variance is 546 and standard deviation is 23.4 therefore,

Option A is the answer that is Jersey numbers are nominal data that are just replacements for names, so the resulting statistics are meaningless.

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3 years ago
What value of c makes the polynomial below a perfect square? x^2+10+c
Inessa05 [86]

Answer: Hi there

To find the last term in order to obtain the perfect square, take the middle term, divide it by 2, and take its square. 

10 ÷ 2 = 5

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Thus, the equation would be x^2 + 10x + 25

The answer is 25

Maybe mark Brainliest

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