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Elenna [48]
3 years ago
9

Two numbers total 42 and have a difference of 8 find the two numbers

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
5 0
X+y = 42
x-y = 8
x = 8+y

Substitute it in 1st equation,
8+y+y=42
2y = 34
y = 17

Substitute it in 1st eq.,
x = 42-17 = 25

So, the two numbers are 25 & 17

Hope this helps!

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Answer:

Step-by-step explanation:

The equation to find the slope given 2 points is (y2-y1)/(x2-x1). Lets say that (-5,-2) is x1 and y1 respectively, and (-3,-6) is x2 and y2 respectively. Now, you'd substitute these values into the equation to get [(-6)-(-2)]/[(-3)-(-5)]. When you simplify this, you get (-4/2). When you simplify this further, you get -2. Your slope is -2.

5 0
3 years ago
PLEASE I NEED HELP ASAP<br> D=<br> E=<br> F=
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Answer:

d=90 e=27 f=153

Step-by-step explanation:

since 90 is one half of 180 if d was any bigger or smaller the the information given would be incorrect.

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8 0
3 years ago
Someone please help‍♀️
andrew11 [14]

Answer:

D. y=-1/5(x)

Step-by-step explanation:

To find the equation of a line, use the formula y=mx+b, where x and y represent your x and y coordinates, m is your slope and b is your y-intercept.

b is you y-intercept, this is where the line cuts the y-axis. We can see from the graph that the line cuts the y-axis at (0,0), so c=0.

Now we have y=mx

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So our equation looks like this:

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3 0
3 years ago
The coordinates of the point Care (6,5) and the coordinates of point D are
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Step-by-step explanation:

6 0
3 years ago
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OLga [1]

Answer:

21

ctto JBarnum

Step-by-step explanation:

P+11=(1/2)(P-13)^2

P+11=(1/2)(P^2-26p+169)

2(P+11)=(1/2)(2)(P^2-26p+169)

2P+22=P^2-26p+169

0=P^2-28p+147      ( -7 and -21)

(P-7)(P-21)=0

P=7,21                     (cant be 7 as 13 years from 7 is negative so peter is 21)

checking:

21+11=32

32=(1/2)(21-13)^2

32=(1/2)(8)^2

32=(1/2)64

32=32

correct

4 0
3 years ago
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