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trapecia [35]
3 years ago
10

If 10x−8y=2 and −7x−y=5 are true equations, what would be the value of−17x+7y?

Mathematics
1 answer:
Gnoma [55]3 years ago
7 0

Answer:   2.951

x = -0.576

y = -0.97

-17x + 7y

= -17(-0.573) + 7(-0.97)

= 2.951

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In the Central Grand Prix, out of 30 cars that started the race, 12 of them finished. What percent of the cars finished the race
zvonat [6]

Answer:

40% finished, which means that 60% did not.

Step-by-step explanation:

a = p*w

12 = p*30

12/30=p

.40 = p

40%

6 0
3 years ago
Joanna has a big paper due. Yeasterday she syarted typing her hand written draft. She typed 805 words of it and saved her work t
Akimi4 [234]

Answer:

20 minutes

Step-by-step explanation:

This is how you solve.

5 0
3 years ago
The function g(x) undergoes a vertical stretch of 2, a horizontal shift to the right 3 units, and a vertical shift up 1 to becom
Maksim231197 [3]

Answer:

NONE OF THE OPTIONS GIVEN

Step-by-step explanation:

F(x) = 2|x - 3| + 1 is close, but vertical bars in stead of parentheses completely changes the curve shape

I believe it should be f(x) = 2(x - 3) + 1

if g(x) = x

here are some plots to compare the possibilities. I've shifted the vertical of each to separate the blue and green lines slightly. If they were both true "1" values the lines would be colinear for x>3.

The red line has a slope of 1, stretching by a factor of 3 means the slope is now 3. The absolute value signs from the answer options makes f(x) have a sharp V shape whereas the parentheses creates a single line for all values of x as does g(x) = x.

5 0
3 years ago
Y=x^2+12x+30 8x-y=10
NARA [144]
Y=x^2+12x+30
8x-y=10
sub x^2+12x+30 for y in the secodn equaiton

8x-(x^2+12x+30)=10
8x-x^2-12x-30=10
-x^2-4x-30=10
times -1
x^2+4x+30=-10
add 10 both sides
x^2+4x+40=0
use quadratic formula
we find that we have 2 imaginary roots and therefor are not on the real plane, they are not plotted on the imaginary plane

no real solution
x=-2+6i or -2-6i
the interseciton on the imaginary plane is
(-2+6i, -26+48i) or (-2-6i,-26-48i)
5 0
3 years ago
Read 2 more answers
In a winter storm, the amount of snowfall is directly proportional to the time
Sliva [168]

Answer:

10.5 Inches of snow after 6 hours

Step-by-step explanation:

First you would divide

7/4=1.75

Then you would multiply by 6

1.75*6=10.5

10.5 inches of snow would be the total

Hope this helped! :D

4 0
3 years ago
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