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3 years ago

9

How can you getell to know fractions really quickly in a very easy way? Plz help get this answered soon. :)

1 answer:

cupoosta [38]3 years ago

4 0

You just study alot and do questions on fractions

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Ronch [10]

Answer:

<em><u>1 and 5</u></em>

Step-by-step explanation:

The squares have a side length of 10 and 1 square side is the radius of the half-circles. Since there are two half-circles, find the circumference for one full circle:

$C=2\pi r$

Insert the radius:

$r=10\\C=2\pi *10$

Simplify pi:

$C=2*3.14*10$

Simplify multiplication:

$C=6.28*10\\C=62.8$

The circumference of the circles is 62.8. Now find the perimeter of the exposed squares with side length 10. There are 4 exposed sides, which equals one square. Find the perimeter:

$P=10+10+10+10\\P=10+10+20\\P=10+30\\P=40$

Add the perimeter of the circle and the square together:

$P=62.8+40=102.8$

Now see which of the options gives you the perimeter:

1. $40+20\pi =102.8$ ****

2. $unavailable$

3. $120+20\pi =182.8$

4. $300+100\pi =614.2$

5. $10+10+10\pi +10+10+10\pi =102.8$ ****

Finito.

7 0

3 years ago

The math club is sponsoring a bake sale.If their goal is to raise at least $200,how many pies must they sell at $4.00 each in or

Tems11 [23]

The math club must sell 50 pies in order to reach the goal of 200 dollars

4 0

3 years ago

Evaluate the expression without using a calculator.<br> In1/e^7

Sati [7]

Answer:

-7

Step-by-step explanation:

$ln(\frac{1}{e^7})\\=ln(e^{-7})\\ =-7ln(e)\\=-7$

8 0

3 years ago

Find the area of a rectangle whose length is 8 and breath is 3<br>

natulia [17]

Answer:
Area is 24

Explanation: times the length by the breath (width)

7 0

3 years ago

Paul wants to compare whether the prices of tangerines in two supermarkets differ significantly. He has been noting down the dai

Wewaii [24]

<span>Based on the rules of statistics</span>

68% of the data falls within 1 standard deviation of the mean

95% of the data falls within 2 standard deviation of the mean

99% of the data falls within 3 standard deviation of the mean

20 falls between the range of -56 to 56 (from the given 95%)

Hence we accept the null hypothesis; else, if the mean falls outside the range, we reject the null hypothesis.

<span> </span>

5 0

3 years ago