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3 years ago

9

The middle school track team consists of sixth, seventh, and eighth grade students. The 5 sixth grade and 9 seventh grade studen

ts make up 43.75% of the entire team. How many eighth grade students are on the team?

1 answer:

IrinaVladis [17]3 years ago

7 0

Times them and it’ll give u the answers

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For your friend's birthday, you have 3 presents to wrap. Find the combined surface area of these 3 gifts so you know how much wr

omeli [17]

The answer is: 5,614 square inches.

The explanation is shown below:

1. The gift on the bottom is a rectangular prism. To calculate its surface area, you must apply the following formula:

$SA=2[(l)(w)+(l)(h)+(h)(w)]$

Where $l$ is the length (20 inches), $w$ is the width (42 inches) and $h$ is the heigth (16 inches).

2. Substitute values:

$SA1=2[(20in)(42in)+(20in)(16in)+(16in)(42in)]=3,664in^{2$

3. The surface area of the other gifts can be calculated with the formula for calculate the surface area of a cube:

$SA=6s^{2}$

Where $s$ is the side.

4. The surface area of the bigger cube is:

$SA2=6(15in^{2})=1,350in^{2}$

5. The surface area of the smaller cube is:

$SA3=6(10in^{2})=600in^{2}$

6. The total surface area (the combined surface area of the three gifts) is:

$SAt=SA1+SA2+SA3\\SAt=3,664in^{2}+1,350in^{2}+600in^{2}\\SAt=5,614in^{2}$

7 0

3 years ago

0,5.<img src="https://tex.z-dn.net/?f=%5Csqrt%7B0%2C09%7D" id="TexFormula1" title="\sqrt{0,09}" alt="\sqrt{0,09}" align="absmidd

Komok [63]

Answer:

0.21

Step-by-step explanation:

The given expression is :

$0.5\times \sqrt{0.09}-2\sqrt{0.05}+\sqrt \frac{1}{4}$

We need to solve it.

We know that,

$\sqrt{0.09}=0.3\ and\ \sqrt{0.05}=0.223$

So,

$0.5\times \sqrt{0.09}-2\sqrt{0.05}+\sqrt \frac{1}{4}=0.5\times 0.3-2\times 0.22+0.5\\\\=0.21$

or

$=\dfrac{21}{100}$

So, the value of the given expression is equal to 0.21.

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2 years ago

Every month I increase the amount of cupcakes

Orlov [11]

Answer:2

Step-by-step explanation: it increases by 2 every month

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2 years ago

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marusya05 [52]

To find the zeros set the factors on the numerator equal to zero and solve
(x - 1) = 0 x = 1
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2 years ago

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shutvik [7]

That’s the answer
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