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mart [117]
3 years ago
9

Which equation represents the line that passes through the point (1,5) with a slope of-2

Mathematics
1 answer:
svlad2 [7]3 years ago
3 0

Answer:

The equation of the line would be y = -2x + 7

Step-by-step explanation:

In order to solve this, use the point and the slope in point-slope form. Then solve for y.

y - y1 = m(x - x1)

y - 5 = -2(x - 1)

y - 5 = -2x + 2

y = -2x + 7

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The ages of three siblings total 32 years. The middle child is 4 years older than the youngest, and the eldest is twice as old a
marshall27 [118]

Answer:

x = 7

y = 11

z = 14

Step-by-step explanation:

x + y + z = 32

Let's say the youngest is x, middle is y and oldest is z.

y= x+4 (age of the youngest + 4)

z= 2x (twice as old)

We can replace y and z in the main equation above with these values that contain x.

x + (x + 4) + 2x = 32

4x = 28, divide both sides by 4

x = 7

y = x + 4 = 7 + 4 = 11

z = 2x = 2*7 = 14

And to check: 7 + 11 + 14 = 32


8 0
3 years ago
Read 2 more answers
30 Pts
Alona [7]

How to find the percent of change between numbers


First: work out the difference (increase) between the two numbers you are comparing.


Increase = New Number - Original Number


Then:  divide the increase by the original number and multiply the answer by 100.


% increase = Increase ÷ Original Number × 100.


If your answer is a negative number, then this is a percentage decrease.


To calculate percentage decrease:

First: work out the difference (decrease) between the two numbers you are comparing.


Decrease = Original Number - New Number


Then: divide the decrease by the original number and multiply the answer by 100.\


% Decrease = Decrease ÷ Original Number × 100


If your answer is a negative number then this is a percentage increase.


If you wish to calculate the percentage increase or decrease of several numbers then we recommend using the first formula. Positive values indicate a percentage increase whereas negative values indicate percentage decrease.

The answer is 24.22%


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8 0
3 years ago
1/2 to the 2nd power in fraction form
Rzqust [24]

Answer:  \frac{1}{4}

Work Shown:

\left(\frac{1}{2}\right)^2 = \left(\frac{1}{2}\right)*\left(\frac{1}{2}\right) = \frac{1*1}{2*2} = \frac{1}{4}

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2 years ago
Which Superhero has the greater miles to second ratio
Hunter-Best [27]

Answer:

Super Man

Have a great day!

6 0
3 years ago
what is the greatest place value position where the digits differ? what does that mean if we use it in decimal?
Brums [2.3K]
The Tenths place because it's the first
6 0
3 years ago
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