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Rudik [331]
3 years ago
11

Please help me on this question

Mathematics
2 answers:
just olya [345]3 years ago
8 0
130.2 is the answer ✌130.2
AleksandrR [38]3 years ago
7 0

Answer:

The area can be expressed as: \pi r^2+lw.

We have l=10, because 18-2(4)

We have w=8, as given.

Thus, the rectangle area is 80.

There are two semicircles, but they add to form a full circle, which makes things a lot easier. We have the circle area formula, and substituting the values gives us 50.24 as the circle volume

80+50.24=130.24.

Rounded to 1 decimal place that is 130.2

Hope this helps :)

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lukranit [14]
Let's turn this sentence into an equation:

8n = -n + 36

Then solve:

9n = 36 => n=4
6 0
3 years ago
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AlekseyPX

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Step-by-step explanation:

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3 years ago
Amanda spent a total of 70 minutes competing her chores this week. Write and solve an equation to represent the number of minute
gtnhenbr [62]

Answer:

28 minutes spent in washing the dishes.

Step-by-step explanation:

Given the table

Chore             time in minutes

Sweeping           42

Dishes                  ?

Amanda spent a total of 70 minutes competing her chores this week

Total of 70 minutes spent

42 minutes spent in sweeping . to find the number of minutes Amanda spent in washing the dishes , subtract 42 minutes from the total time spent

let x be the number of minutes spent washing the dishes

42+x=70

To solve for x , subtract 42 from both sides

42+x=70\\x= 70-42\\x=28

28 minutes spent in washing the dishes.

4 0
3 years ago
kalia spent a quarter of her weekly allowance on a movie. the movie was $4.25. WHat is her weekly allowance
Montano1993 [528]

Answer:

$17

Step-by-step explanation:

Think about it like this.

$4.25 is equal to 0.25 * x value, where x is the weekly allowance

$4.25=0.25x

$17=x

7 0
2 years ago
A painting is 2 in tall and 3 in wide. If it is enlarged to a width of 15 in then how tall will it be?
vekshin1

Answer:

10 in

Step-by-step explanation:

Old proportions:

2 x 3

New proportions

h x 15

Assuming the painting has been increased by a constant scale factor.

Where x is the unknown scale factor, and h is the height after it has been enlarged.

3 * x = 15\\2 * x = h

Rearrange second equation:

3 * x = 15\\x =\frac{h}{2}

Substitute:

3*\frac{h}{2} =15\\\frac{h}{2}=5\\h=10

7 0
3 years ago
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