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3 years ago

Please help!!!!!!!!!!!!!

Mathematics

1 answer:

vampirchik [111]3 years ago

6 0

Plumber a = 60x
Plumber b = 40+55x
An 8 hour job would cost the same for both plumbers. It would cost $480. Plumber a should be hired for a 5 hour job.

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Suppose an ant walks counterclockwise on the unit circle from the point to the endpoint of the radius that forms an angle of rad

serg [7]

Answer:

$\frac{4\pi}{3}$

Step-by-step explanation:

The original questions is suppose an ant walks counterclockwise on a unit circle from the point (1,0) to the endpoint of the radius that forms an angle of 240 degrees with the positive horizontal axis.

To find the distance ant walked we find the arc length of the sector with central angle 240 degree and radius =1 (unit circle)

arc length of a sector = $\frac{centralangle}{360} \cdot 2\pi r$

arc length of a sector = $\frac{240}{360} \cdot 2\pi(1)$

arc length of a sector = $\frac{2}{3} \cdot 2\pi$

$\frac{4\pi}{3}$

6 0

3 years ago

The sum of 3y and 5 is 47

Daniel [21]

if 3y + 5 = 47

then

y=14

7 0

3 years ago

Select the property of equality used to arrive at the conclusion <br> if x-3=7 , then x=10

Fantom [35]

Answer:

The addition property of equality

Step-by-step explanation:

According to the addition property of equality, if we add the same number to each side of an equation, the equality is still true.

We are given the equation

x – 3 = 7, and we must solve for x.

We want to get x by itself, so we <em>add 3 to each side</em>.

x – 3 + 3 = 7 + 3

x = 10

We have just used the addition property of equality.

8 0

3 years ago

Describe how you would estimate the first number of the quotion for the division497÷22

liraira [26]

I would round them so it would be 500 divided by 20
The answer should be close to 25

4 0

3 years ago

The first drop down: (x-12),(x-80), (80-x), (12-x)

Mice21 [21]

Answer:x=12 and 68$

Step-by-step explanation:

4 0

3 years ago