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tekilochka [14]
2 years ago
15

What is the solution to this equation? x-8=15 A. X=13 B.X=17 C. X=7 D. X=23

Mathematics
2 answers:
SashulF [63]2 years ago
7 0
X-8=15
The answer is D. X=23
azamat2 years ago
4 0

x-8= 15

x-8+8=15+8

x= 23

Check answer by using substitution method

x-8= 15

23-8= 15

15= 15

Answer is X= 23 (D.)

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Consider equation 2x+7=5w-23
sveticcg [70]

Answer:

x= 5/2w-15 .  

Step-by-step explanation:

See the image below:)

4 0
2 years ago
What is an equation of the line that passes through (2,2) and is parellel to the line y=7x
laila [671]

Answer:

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

Step-by-step explanation:

Given:

a line y=7x

To Find:

Equation of line passing through ( 2, 2) and is parellel to the line y=7x

Solution:

y=7x     ...........Given

Comparing with,

y=mx

Where m =slope

We get

Slope = m = 7

We know that parallel lines have Equal slopes.

Therefore the slope of the required line passing through (2 , 2) will also have the slope = m = 7.

Now the equation of line in slope point form given by

(y-y_{1})=m(x-x_{1})

Substituting the points and so we will get the required equation of the line,

(y-2)=7(x-2)=7x-14\\\\y=7x-12......Equation\ of\ line

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

4 0
3 years ago
So I kinda forgot how to do this *nervous laughter* um help​
natali 33 [55]

1) value of x =60

2) value of x = 3

Step-by-step explanation:

We need to use cross products to solve the proportions of x.

1.\,\, \frac{3}{5}= \frac{x}{100}

Solving:

\frac{3}{5}= \frac{x}{100}\\Cross\,\,multiply\,\,:\\5x=3*100\\5x=300\\x=\frac{300}{5}\\x=60

So, value of x =60

2.\,\,\frac{x}{8}=\frac{7.5}{20}

\frac{x}{8}=\frac{7.5}{20} \\20x=7.5*8\\20x=60\\x=\frac{60}{20}\\ x=3

So, value of x = 3

Keywords: Ratio and Proportions

Learn more about Ratio and Proportions at:

  • brainly.com/question/8280736
  • brainly.com/question/10764770
  • brainly.com/question/13062539

#learnwithBrainly

7 0
2 years ago
What is cos 45º?
steposvetlana [31]

Answer:

The exact value of cos(45°) is √(2) / 2.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The manager of a coffee shop has one type of coffee that sells for $7 per pound and another type that sells for $11 per pound. T
kirza4 [7]
More of the $7 coffee would be used<span />
3 0
3 years ago
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