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scoundrel [369]

3 years ago

12

One number is 9 times a first number. a third number is 100 more than the first number. if the sum of the three numbers is 727,

find the numbers.

1 answer:

Zielflug [23.3K]3 years ago

8 0

First number: 57
Second number: 513
Third number: 157

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Alisiya [41]

645/560=1.151785714
Ther perccent error in her estimate is 15%

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3 years ago

6a*2-a-15 factoring and soulutions

eduard

6a(2)-a-15
=12a+-a+-15
Combine Like Terms:<span>=<span><span><span>12a</span>+<span>−a</span></span>+<span>−15</span></span></span><span>=<span><span>(<span><span>12a</span>+<span>−a</span></span>)</span>+<span>(<span>−15</span>)</span></span></span><span>=<span><span>11a</span>+<span>−15</span></span></span>Answer:<span>=<span><span>11a</span>−15</span></span> <span>

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4 0

3 years ago

A car travels a distance of 540 km in 6 hours what speed did he travel at

SVETLANKA909090 [29]

Speed = Distance / time

Speed = 540 km / 6 hours

Speed = 90 km/hr.

7 0

2 years ago

"Four more than a number is at least 22"

Reika [66]

Answer:

4 + x < 22

that's what the equation is

Step-by-step explanation:

a number just means a variable ex: x, y

at least is this : <

so 4 + x < 22

5 0

2 years ago

Read 2 more answers

The circumference of a bowling ball is 8pi in. Find the surface area of the bowling ball. Express your answer in terms of pi.

MrRa [10]

Surface area of a sphere (3D solid's name for ball shaped object) is given by

$SA = 4 \pi r^{2}$

We do not know the radius of the sphere but we can work it out from the circumference $8 \pi$

$Circumference = 2 \pi r$
$8 \pi =2 \pi r$
$r= \frac{8 \pi }{4 \pi }=2$

then
$SA=4 \pi (2)^{2} =16 \pi$

7 0

3 years ago