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Minchanka [31]
3 years ago
14

How do I solve 4/7 of 28

Mathematics
2 answers:
Lelu [443]3 years ago
7 0
I got 16, you may review the image I've attached to see how I got my answer.

I am Lyosha [343]3 years ago
7 0
4/7 of 28 is essentially (4/7)*28, or (4*28)/7, which simplifies to 112/7, to 16.
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Please help i will give brainliest
inysia [295]

Answer:

Step-by-step explanation:

Take the area of the yard and subtract from it the area of the pool.  In quadratic form, the area of the pool is

2x^2-x-28

Subtracting the area of the pool from the area of the yard:

3x^2-14x-5-(2x^2-x-28)

Since the negative in front of the parenthesis will change the signs inside:

3x^2-14x-5-2x^2+x+28

Combine like terms to get the area left after the pool goes in:

x^2-13x+23

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3 years ago
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gtnhenbr [62]

Answer:

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The area of a trapezium is 35 cm² and the distance between its parallel sides is 16 cm. if one of the parallel is of length 25 c
Furkat [3]

Answer:

No solution

Step-by-step explanation:

A = (b1 + b2)h/2

A = 35 cm²

h = 16 cm

b1 = 25 cm

b2 = ?

35 = (25 + b2)(16)/2

70 = (25 + b2)(16)

70 = 400 + 16b2

16b2 = 330

b2 = 330/16 = -20.625

The answer is a negative number. Since the base of a trapezium cannot have a negative length, there does not exist a trapezium with the given information.

3 0
3 years ago
Tammy figured her math exam would be difficult unless she put in at
Ludmilka [50]

Answer: No, she did not study for at least 15 hours.

=======================================================

Explanation:

Fractions are often a pain, so I find it easier to convert to decimal form whenever possible.

1/2 = 0.5

3/4 = 0.75

which lead to,

2 & 1/2 = 2 + 1/2 = 2 + 0.5 = 2.5

4 & 3/4 = 4 + 3/4 = 4 + 0.75 = 4.75

4 & 1/2 = 4 + 1/2 = 4 + 0.5 = 4.5

-----------------------------

We can then rephrase the problem like so:

"She studied 2.5 hours on Monday, 3 hours on Tuesday, 4.75 hours on Wednesday, and 4.5 hours on Thursday"

Add up those decimal values to get:

2.5 + 3 + 4.75 + 4.5 = 14.75

In total, Tammy studied for 14.75 hours, which is equivalent to 14 & 3/4 hours.

This result is smaller than 15, so she did <u>not</u> study for at least 15 hours.

Note: "at least 15" is the same as saying "15 or more".

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3 years ago
Please help me!! ASAP
cricket20 [7]

Answer:

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Step-by-step explanation:

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