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3 years ago

During the summer, a river's height decreases by 0.05 inch every day. What is the change in the

Mathematics

1 answer:

kicyunya [14]3 years ago

6 0

Answer:

it decreases by 1 inch total

Step-by-step explanation:

if it decreases by .05 inches per day for 20 day, then that would be .5 times 20, which equals 1, so in total, the river decreased 1 inch

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Help me !! 10/7 x 9/8 7/9 x 8/10

FromTheMoon [43]

Answer:

Step-by-step explanation:

10/7 x 9/8 = 90/56 = 45/28.

7/9 x 8/10 = 56/90 = 28/45

If you want to multiply these, the answer is (28*45) / 28/45) = 1.

5 0

2 years ago

Read 2 more answers

The area of the circle is 144π m2<br><br> What is the diameter of the circle?

Over [174]

Answer:

Step-by-step explanation:

Remember that

Area of Circle = $\pi r^2$

$\pi = pi \\r = radius$

They told us that for this circle, the area is $144\pi m^2$

If you put it back into the formula for area of a circle we get:

Area of Circle = $\pi r^2$

$144\pi = \pi r^2$

Divide both sides by $\pi$ .

144 = $r^2$

Now we want to solve for r (r = radius).

You need to square root each side

$\sqrt{144} = \sqrt{r^2}$

$12 = r$

So now we know the radius, $r = 12$ metres

Also remember that

Diameter = $2r$

So,

Diameter = 2 times 12 = 24 metres

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3 years ago

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Ede4ka [16]

Answer:

the middle sign

Step-by-step explanation:

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3 years ago

180 Added to the product of 45 and a number totals negative 720. Write an equation to determine the number.

IrinaVladis [17]

Answer:

45x + 180 = - 720

Step-by-step explanation:

Let the required number be x.

Therefore, product of 45 and x = 45x

180 added to 45x = 45x + 180

Since, 180 Added to the product of 45 and a number totals negative 720.

So, 45x + 180 = - 720

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3 years ago

How do you determine annual gross income?<br> Is there a formula?If so, what is it?

natita [175]

Multiply the number of hours you work per week by your hourly wage. Multiply that number 52 (the number of weeks in a year.) If you make $20 an hour and work 37.5 hours per week, you annual salary is $20 x 37.5 x 52 or $39,000.

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3 years ago