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denpristay [2]
2 years ago
15

A semi circle is drawn on to one of the shorter sides of the rectangle the shorter side of the rectangle measures 4 cm the area

of the figure is 41.4 square centimeters. what is the length of the longer side of the rectangle use 3.14 for pi
enter your answer as a decimal in the box
Mathematics
2 answers:
Nadusha1986 [10]2 years ago
4 0

Answer:

man yall some bums iss 4

Step-by-step explanation:

i took da test

tino4ka555 [31]2 years ago
3 0

Answer:

I dont know I also need help with this

Step-by-step explanation:

this is so hard please help

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Easy math, but not sure what I did wrong.
Ierofanga [76]

Answer:

8

Step-by-step explanation:

In his 5th year, he took 3 times as many exams as the first year.  So the number of exams taken in the 5th year must be a multiple of 3.

If a₁ = 1, then a₅ = 3.  However, this isn't possible because we need 4 integers between them, and a sum of 31.

If a₁ = 2, then a₅ = 6.  Same problem as before.

If a₁ = 3, then a₅ = 9.  This is a possible solution.

If a₁ = 4, then a₅ = 12.  If we assume a₂ = 5, a₃ = 6, and a₄ = 7, then the sum is 34, so this is not a possible solution.

Therefore, Alex took 3 exams in his first year and 9 exams in his fifth year.  So he took 19 exams total in his second, third, and fourth years.

3 < a₂ < a₃ < a₄ < 9

If a₂ = 4, then a₃ = 7 and a₄ = 8.

If a₂ = 5, then a₃ = 6 and a₄ = 8.

If a₂ = 6, then there's no solution.

So Alex must have taken 8 exams in his fourth year.

4 0
3 years ago
Alex swims at an average speed of 45m/min. How far does he swim in 1 minute and 24 seconds?
aksik [14]

Answer:

63 m        

Step-by-step explanation:

We are given the following in the question:

Average speed of swimming = 45 m/min

Time = 1 minute 24 seconds

Converting time into minutes:

=1 + \dfrac{\text{seconds}}{60}\\\\=1 + \dfrac{24}{60}\\\\=1.4\text{ minutes}

Formula:

\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}

Putting values, we get.

45 = \dfrac{\text{Distance}}{1.4}\\\\\text{Distance} = 45\times 1.4 = 63\text{ m}

Thus, Alex swims for 63 m in 1 minute and 24 seconds.

6 0
3 years ago
Use the distributive property to expand the following expression.
Levart [38]

Answer:

-12.8x - 20y + 8.4

Step-by-step explanation:

To do this you just multiply everything by negative 4

so we have 3.2x*-4 + 5y*-4 - 2.1*-4

This gives us

-12.8x - 20y + 8.4

The last term is positive because we multplied a negative by another negative

3 0
3 years ago
The value of y varies directly with x. When y = 75, 7 = 1. What is the value of y when x is 272
kow [346]
I’m assuming that 7 means x, and honestly all you have to do is multiply. x= 1 , y= 75.. so just multiply 75 and 272. The answer is 20,400.
8 0
3 years ago
Using partial products the product are 21 and 28
valkas [14]
I believe it's 1200.
Hope this helped :)
6 0
3 years ago
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