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Sidana [21]
2 years ago
10

The sum of three consecutive multiples of 7 is 63 find these multiples

Mathematics
1 answer:
Leto [7]2 years ago
6 0

Let three consecutive multiples of 7 be 7x,7x+7 and 7x+14

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Jake washes cars. On monday he washed 18 cars for $90. On tuesday he washed 9 cars for $45. On wednesday he washed 12 cars for $
chubhunter [2.5K]

Answer:

the rate  of change is 5

Step-by-step explanation:

$90 / 18 cars = $5 per car

$45 / 9 cars = $5 per car

$60 / 12 cars = $5 per car

That means the rate of change is 5 (5/1)

3 0
3 years ago
Read 2 more answers
A regular pentagonal prism has a volume of 2,850 cubic millimeters. what is the height of the prism? a regular pentagonal prism
zlopas [31]

Answer:

Height = 19mm.

Step-by-step explanation:

Area of a regular polygon =  (A * P) / 2 where A = side / (2 * Tan (π / N)) where, N = Number of sides, A = Apothem,  P = Perimeter.

Here A = 5, P = 5*12 = 60 so

Area  of the base  = (5 * 60) / 2 = 150 mm^2.

Volume = area base * height so

Height = volume / area of base

            = 2850 / 150

            = 19 mm.

5 0
1 year ago
How do you simplify -(5x+1)
Roman55 [17]
-1(5x+1)
-5x-1
the (-) in front is just a short way to put (-1)
6 0
3 years ago
PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.
grin007 [14]

Answer:

It should be 9 m :)

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
An architect is making a floor plan for an apartment. The floor plan will include a Great Room with a length of 30 feet and a wi
RoseWind [281]

Answer:

5 inches

Step-by-step explanation:

we know that

The scale drawing is

\frac{1}{4}\ in : 1\ ft

using proportion find out the width of the great room on her plan

\frac{(1/4)}{1}\ \frac{in}{ft}=\frac{x}{20}\ \frac{in}{ft}\\\\x=20(1/4)\\\\x=5\ in

4 0
3 years ago
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