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2 years ago

A computer programmer worked 12 hours and earned $510. What is the hourly rate?

Mathematics

2 answers:

Svet_ta [14]2 years ago

6 0

Your answer is A) $42.50/1 hour.

Lelu [443]2 years ago

5 0

We can use ratio

If the person works for 12 hours and earns $510, for one hour:

12*1=510*x

x=510/12

x= $42.5

Thus the person earns 42.5 dollars per hour.

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A map show a town with an area of 3.5 inches.If the map has a scale of 1 inch:4 miles,what is the actual area of the town?

cestrela7 [59]

Answer:

The actual area of the town is 14 miles.

Step-by-step explanation:

Since you know that the scale is 1 inch:4 miles and that the map shows a town with an area of 3.5 inches, you can expressed this as follows:

Scale: 1 inch:4 miles

map area: 3.5 inches

If the actual area is x, you can say that:

3.5:x=1:4

This would be:

$\frac{3.5}{x}=\frac{1}{4}$

Now, you can solve for x:

x=(3.5*4)/1

x=14

According to this, the answer is that the actual area of the town is 14 miles.

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2 years ago

Find the missing length indicated. 18 ? 4 8 A) 21 C) 9 B) 3 D) 25

Reika [66]

I think the answer is 9

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2 years ago

mr. Johnson borrowed $750 for one year he has to pay 6% simple interest how much interest will he pay

Oxana [17]

Answer:

750 times 6

Step-by-step explanation:

8 0

2 years ago

At 82°F, a certain insect chirps at a rate of 61 times per minute, and at 91°F, they chirp 124 times per minute. Write an equati

Ganezh [65]

Answer:

$y=7x-513$

Step-by-step explanation:

Let

x----> the temperature in degrees Fahrenheit

y ---->insect chirping rate in times per minute

we have the ordered pairs

(82,61) and (91,124)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{124-61}{91-82}$

$m=\frac{63}{9}=7$

step 2

Find the equation of the line

we know that

The equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

we have

$m=7$ ---> the units are chirps per minute/degree F

take the point (82,61)

substitute and solve for b

$61=7(82)+b$

$61=574+b$

$b=-513$

substitute

$y=7x-513$

4 0

2 years ago

Gradient of line AB (3,7) and (5,11)

larisa [96]

Answer:

Gradient is change in y over change in x.

gradient = y1-y2 ÷ x1-x2

=7-11 ÷ 3-5

=-4 ÷ -2

4 0

2 years ago

Read 2 more answers