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slava [35]
3 years ago
9

Leon read 5/7 of the pages in his book.He has 28 pages left to read.How many pages has he read already?

Mathematics
1 answer:
Fittoniya [83]3 years ago
4 0
You would first divide 28 by 7.
28 / 7 = 4.
Now multiply 4 by 5.
4 X 5 = 20.

Therefore, Leon read 20 pages.
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Find the surface area of the right prism. Round to the nearest whole number.
andriy [413]

Answer:

\large\boxed{S.A.=96\ cm^2}

Step-by-step explanation:

We have:

(1) two trapezoids with bases b₁ = 7cm and b₂ = 5cm and the height h = 4cm

(2) three rectangles 3 cm × 7 cm, 3 cm × 4 cm and 3 cm × 5 cm.

The formula of an area of a trapezoid:

A=\dfrac{b_1+b_2}{2}\cdot h

Substitute:

A=\dfrac{7+5}{2}\cdot4=24\ cm^2

Calculate the areas of the rectangles:

A_1=(3)(7)=21\ cm^2\\\\A_2=(3)(4)=12\ cm^2\\\\A_3=(3)(5)=15\ cm^2

The Surface Area:

S.A.=(2)(24)+21+12+15=96\ cm^2

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3 years ago
A rose garden in the city park is rectangular and is 9 m wide. If the area of the rectangle is 144m2, What is the length of the
VikaD [51]
The length if the garden is 68m, here's my work.

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7 0
3 years ago
#6* #6 Multiples Σ > Which answer choice has ONLY multiples of a. 7, 14, 21, 35, 56 b. 7, 21, 27, 35, 49 c. 7, 14, 28, 43, 56
Scilla [17]

Answer:

A

Step-by-step explanation:

B) No 27 is a multiple of 3 alone.

C) No 43 is prime. If you replaced it with 42 all would be well.

D) N 53 is prime.

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3 years ago
Solve the following question using the elimination method :)
pochemuha
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Answer:

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Step-by-step explanation:

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