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lubasha [3.4K]
2 years ago
12

Evaluate: 2/3 + 4/5 x 7/5 - 8/3​

Mathematics
2 answers:
noname [10]2 years ago
6 0

Step-by-step explanation:

please mark me as brainlest

Savatey [412]2 years ago
4 0

Answer:

-0.88

Explanation:

2/3 + 4/5 x 7/5 - 8/3​

2/3 + 28/25 - 8/3

2/3 - 8/3 + 28/25

-6/3 + 28/25

-2 + 28/25

-50/25 + 28/25

-22/25

-0.88

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13. Given the volume, V, of the rectangular prism below, find h, the height of the prism. V = (x ^ 2 + 2x)/(x + 1) l= 2x + 4 w=
NikAS [45]

Given:

Volume of a rectangular prism is:

V=\dfrac{x^2+2x}{x+1}

Dimensions of the rectangular prism are:

l=2x+4

w=\dfrac{x}{8}

To find:

The height of the rectangular prism.

Solution:

The volume of a rectangular prism is:

V=l\times w\times h

After substituting the values, we get

\dfrac{x^2+2x}{x+1}=(2x+4)\times \dfrac{x}{8}\times h

\dfrac{x(x+2)}{x+1}=\dfrac{2x(x+2)}{8}\times h

\dfrac{x(x+2)}{x+1}\times \dfrac{8}{2x(x+2)}=h

\dfrac{1}{x+1}\times \dfrac{8}{2}=h

\dfrac{4}{x+1}=h

Therefore, the correct option is C.

8 0
3 years ago
Find the value of y.
sveticcg [70]

Hello,

it's an equilateral triangle, all sides and all angles are the same.

so they are all 4 cm sides.

4 = 2y + 6

-2y = 6 - 4

-2y = 2

y = 2 : 2

y = 1 or -1

5 0
4 years ago
Could someone help me asap? :)
svetoff [14.1K]

Answer:

1. The top choice.

2. The third choice.

3. The third choice.

Step-by-step explanation:

Number one is a line, so it should have two arrows.

Number 2 is a segment, so it should have no arrows.

Number 3 is a ray, so it should have one arrow. (The letters need to be in the same direction as the ray, hence why it is BC and not CB)

5 0
4 years ago
Read 2 more answers
I'll mark brainliest if your right! please help me!!!!
valkas [14]

Answer:

its 3 and 5

Step-by-step explanation:

i know this because i took the quiz and its simple

3 0
3 years ago
Please help!! This is worth 20 points :DD
solniwko [45]

Answer:

No picture to answer

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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