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OlgaM077 [116]
2 years ago
7

You earn $42 for washing 7 cars. How much do you earn for washing one car? How much do you earn for washing 3 cars? How much do

you earn for washing 5 cars?
Mathematics
1 answer:
SSSSS [86.1K]2 years ago
3 0

Answer:

1 car = $6 ; 3 car = $18 ; 5car = $30

Step-by-step explanation:

$ 42 = 7 cars

so 1 car = $42÷7 = $6

so 3 cars = 3 × $6 = $18

so 5 cars = 5 × $6 = $30

Hope this helps you.

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2) The distance between two villages is 0.625 km.
Elena-2011 [213]

Answer:

12.5 cm

Step-by-step explanation:

0.625km=62500cm. The scale factor is 1:5000. So the distance on the map will be 62500/5000=12.5 cm

6 0
3 years ago
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A plumbing company charges an initial fee of $50, plus an additional $26 per hour of service. A second company charges an initia
torisob [31]
The answer is C. You pay $128 in the third hour for both. Hope this helped
3 0
2 years ago
Graph the functions on the same coordinate axis. {f(x)=−2x+1g(x)=x2−2x−3
NikAS [45]

Answer:

(2,-3) and (-2,5)

Step-by-step explanation:

Let us graph the two equations one by one.

1. f(x)=-2x+1

If we compare this equation with the slope intercept form of a line which is given as

y=mx+c

we see that m = -1 and c =1

Hence the slope of the line is -2 and the y intercept is 1. Hence one point through which it is passing is (0,1) .

Let us find another point by putting x = 1 and solving it for y

y=-2(1)+1

y=-2+1 = -1

Let us find another point by putting x = 2 and solving it for y

y=-2(2)+1

y=-4+1 = -3

Hence the another point will be (2,-3)

Let us find another point by putting x = -2 and solving it for y

y=-2(-2)+1

y=+1 = 5

Hence the another point will be (-2,5)

Now we have two points (0,1) ,(1,-1) ,  (2,-3) and (-2,5) we joint them on line to obtain our line  

2.

g(x)=y=x^2-2x-3

y=x^2-2x+1-1-3

y=(x-1)^2-4

(y+4)=(x-1)^2

It represents the parabola opening upward with vertices (1,-4)

Let us mark few coordinates so that we may graph the parabola.

i) x=0 ; y=y=(0)^2-2(0)-3=0-0-3=-3 ; (0,-3)

ii)x=-1 ; y=(-1)^2-2(-1)-3=1+2-3=0 ; (-1,0)

iii) x=2 ; y=(2)^2-2(2)-3 = 4-4-3 =-3 ;(2,-3)

iii) x=1 ; y=(1)^2-2(1)-3 = 1-2-3 =-4  ;(1,-4)

iii) x=-2 ; y=(-2)^2-2(-2)-3 = 4+4-3 =5  ;(-2,5)

Now we plot them on coordinate axis and line them to form our parabola

When we plot them we see that we have two coordinates (2,-3) and (-2,5) are common , on which our graphs are intersecting. These coordinates are solution to the two graphs.

3 0
3 years ago
What is the minimum value for h(x)=x^2−16x+60? Enter your answer in the box.
Dominik [7]
-58.

To get this, first use the equation -b/2a. This will first find the maximum. After you find the maximum, input the answer into the original equation and solve for the minimum.

Hope this helps!
4 0
3 years ago
Read 2 more answers
What are the solutions of 2x^2 + 16x + 34 = 0?
nexus9112 [7]

Answer :

2x^2 + 16x + 34 = 0? X= -4 -1i X= 4+1i

Step-by-step explanation:

-

6 0
2 years ago
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