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Amiraneli [1.4K]
3 years ago
12

The question is x/-2 + 7 = -12. what is x????

Mathematics
1 answer:
aniked [119]3 years ago
5 0

Answer:

38

Step-by-step explanation:

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Write the equation of a line that passes through the points ( 2 , - 5 ) and ( 8 , - 2 )
kati45 [8]

Answer:

y=\frac{1}{2}x-6

Step-by-step explanation:

Hi there!

Linear equations are typically organized in slope-intercept form: y=mx+b where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)

<u>1) Determine the slope (m)</u>

m=\frac{y_2-y_1}{x_2-x_1} where two points that fall on the line are (x_1,y_1) and (x_2,y_2)

Plug in the given points (2,-5) and (8,-2)

m=\frac{y_2-y_1}{x_2-x_1}\\=\frac{-2-(-5)}{8-2}\\=\frac{-2+5}{8-2}\\=\frac{3}{6}\\=\frac{1}{2}

Therefore, the slope of the line is \frac{1}{2}. Plug this into y=mx+b:

y=\frac{1}{2}x+b

<u>2) Determine the y-intercept (b)</u>

y=\frac{1}{2}x+b

Plug in one of the given points and solve for b

-5=\frac{1}{2}(2)+b\\-5=1+b

Subtract 1 from both sides to isolate b

-5-1=1+b-1\\-6=b

Therefore, the y-intercept of the line is -6. Plug this back into y=\frac{1}{2}x+b:

y=\frac{1}{2}x+(-6)\\y=\frac{1}{2}x-6

I hope this helps!

6 0
3 years ago
In 5 years, Dad will be three times as old as his daughter Jill will be then. If the sum of their present ages is 50, how old ar
grandymaker [24]
First, we know (D is dad, J is Jill) that D+J=50.
Second, in 5 years D will be 3 times as old so
(D+5)= 3*(J+5)
Moving on, if we know D+J=50 then D=(50-J) is true.<span>Taking that relationship and substituting for D in the other equation, it becomes
50 - J + 5 = 3 * (J + 5)
Then, it becomes </span>50 - J + 5 = (3 * J) + (3 * 5)
Then, 55 - J = (3 * J) + 15 
Then, 55 - 15 = (3 * J) + J
<span>which becomes 40 = 4*J</span>
6 0
3 years ago
Read 2 more answers
How does a tree feel after a hard day at work?
alisha [4.7K]

Answer: Happy that he was able to create more seeds and create more trees!

Step-by-step explanation:

4 0
3 years ago
A real world solution for <br> 4.5n+2.5=19
brilliants [131]

Answer:

n = 3.666 or (3 and 2/3)

Step-by-step explanation:

4.5n + 2.5 = 19

4.5n = 19 - 2.5

4.5n = 16.5

n = 16.5 / 4.5

n = 3.666 or (3 and 2/3)

3 0
4 years ago
Help me plzzzz<br> On problem number 3
Luda [366]
A man sells apples pears and bananas. He also sells vegetables. He has 5 apples 3 pears and 7 bananas. How many pices of fruit does he have all together? The extra information is that he sells vegetables. if you need the answer to the problem it is 15.
6 0
3 years ago
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