Multiply the first equation by 2:
4x+10y=8
Subtract the second equation from this so the 4x cancels:
3y = -3
y = -1
Plug into first equation:
2x -5 = 4
2x = 9
x = 9/2 = 4 1/2 = 4.5
So (x,y) = (-1,4.5)

3 0

3 years ago

Read 2 more answers

The equation of the line of best fit of a scatter plot is y = −5x − 2. What is the slope of the equation?

zvonat [6]

Answer:

SLOPE = -5

Step-by-step explanation:

Because that's what x is.

8 0

3 years ago

If the car spends 2.5 hours going 35 miles per hour on the trip, how long does it spend going 35 miles per hours

Neporo4naja [7]

its spends 2.5 hours going 35 miles per hour. so the answer is 2.5 because 35 miles as you said goes 2.5 hours

6 0

3 years ago

Find the distance between points M (6,16) and Z (-1,14) to the nearest tenth, please help step by step

insens350 [35]

The distance between 2 points P(a, b) and Q(c,d) is given by the formula:

$\displaystyle{d= \sqrt{(b-d)^2+(a-c)^2}$ ,

Apply the formula for the points M(6, 16) and Z(-1, 14):

$\displaystyle{d= \sqrt{(16-14)^2+(6-(-1))^2}= \sqrt{2^2+7^2}= \sqrt{4+49}= \sqrt{53}\approx 7.28$

which rounded to the nearest tenth is 7.3 (units)

Answer: 7.3 units

3 0

3 years ago