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RSB [31]
3 years ago
15

PLEASE SHOW WORK ASAP

Mathematics
1 answer:
Ludmilka [50]3 years ago
5 0
4/d = 2/6
4*6= 2*d
24=2d
d=12

(r-3)/10=r/13
13(r-3)=10r
13r-39=10r
3r=39
r=13
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Two buses leave seattle at the same time and travel in opposite directions. one bus averages 55 mi/h and the other bus averages
nalin [4]

In 4 hours they will be 400 miles apart 4 times 55 is 220 and 4 time 45 is 180 since there going in opposer directions add the miles together and it equals 400 so it takes 4 hours

7 0
4 years ago
A brick wall will be shaped like a rectangular prism. The wall needs to be 3ft tall and the builders have enough bricks for the
faltersainse [42]

Answer:

For a rectangular prism that has a base area B, and a height H, the volume is:

V = B*H

This is the only "tool" that we need to use in this situation.

We know that the wall needs to be 3ft tall, then H = 3ft

And we also know that we have enough bricks for a wall of a volume:

V = 330 ft^3

If we replace these two in the volume equation, we get:

330ft^3 = B*3ft

Now we can solve this for B, and thus find the volume of the base of the wall.

To do it, we just need to divide both sides by 3ft

(330 ft^3)/3ft = B*3ft/3ft

110 ft^2 = B

This means that the area of the base is 110ft^2

As the base is a rectangle of width W and length L, we must have:

110ft^2 = B = L*W

Then the possible measures of the base are given by the linear relation:

L = 110ft^2/W

Where we also need to add some trivial restrictions, like:

L > 0 ft

W > 0ft

This only means that we can not have a length or width equal to or smaller than zero, as those do not have physical sense.

7 0
3 years ago
URGENTTTTT
romanna [79]

y=1/3x-1

We know straight away that the y intercept is -1 from the equation.

y-intercept: (0,-1)

To find the x intercept plug in 0 for y in the equation.

y=1/3x-1

0=1/3x-1

1/3x=1

x=3

x-intercept: (3,0)

answers: y-intercept: (0,-1) and x-intercept: (3,0)

3 0
3 years ago
You want to rent a power washer to
iris [78.8K]

23 + 12x <= 75

12x <= 52

if you want an integer, answer is 4 hours

if fractions of an hour are allowed than the answer is 4 and 1 / 3 or 13 / 3

please give brainliest

7 0
2 years ago
What is an expression that is equivalent to 3x-3y
Darya [45]

3x-3y+0+1-1   Just tack on something onto it that doesn't change the outcome

7 0
3 years ago
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