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Sholpan [36]
3 years ago
13

A random sample of students at North High School were polled on whether they prefer a 15-minute break between classes in the mor

ning or in the afternoon. The results are shown in the frequency table. What is the joint relative frequency for 11th graders who want the break in the afternoon? Round to the nearest percent. 21% 25% 40% 61%
Mathematics
2 answers:
bekas [8.4K]3 years ago
5 0

This is late but, it's A. 21%

Gnoma [55]3 years ago
3 0

Answer:

Step-by-step explanation: the answer is 21%

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the surface area of a cuboid is 95cm² and its lateral surface area is 63cm². find the area of its base​
wel

Answer:

The Area of the base is 16 cm² .

Step-by-step explanation:

Given as :

The surface area of the cuboid = x = 95 cm²

The lateral surface area of the cuboid = y = 63 cm²

Let The Area of the base = z cm²

Now, Let The length of cuboid = l cm

The breadth of cuboid = b cm

The height of cuboid = h cm

<u>According to question</u>

∵ The surface area of the cuboid = 2 ×(length × breadth + breadth × height + height × length)

Or, x = 2 ×(l × b + b × h + h × l)

Or, 95 =  2 ×(l × b + b × h + h × l)

Or,  (l × b + b × h + h × l) = \dfrac{95}{2}          ....1

<u>Similarly</u>

∵lateral surface area of the cuboid = 2 ×(breadth × height + length × height)

Or, y = 2 ×(b × h + l × h)

Or, 2 ×(b × h + l × h) = 63

Or, (b × h + l × h) = \dfrac{63}{2}              ......2

Putting value of eq 2 into eq 1

so,  (l × b +  \dfrac{63}{2} ) = \dfrac{95}{2}    

Or, l × b = \dfrac{95}{2} - \dfrac{63}{2}    

Or,  l × b = \dfrac{95 - 63}{2}

i.e l × b = \dfrac{32}{2}

so, l × b = 16

<u>Now, Again</u>

∵The Area of the base = ( length × breadth ) cm²

So, z =  l × b

i.e z = 16 cm²

So, The Area of the base = z = 16 cm²

Hence,The Area of the base is 16 cm² . Answer

5 0
3 years ago
If you use exactly eight cups of cauliflower to make 6 veggie burritos and if you continue to make burritos using the same recip
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Answer:

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Step-by-step explanation:

We can use ratios to solve

8 cups         12 cups

----------   = -----------------

6 burritos     x burritos

Using cross products

8x = 6*12

8x = 72

Divide by 8

8x/8 =72/8

x = 9

9 burritos

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3 years ago
Which of the following expressions has the greatest value?
zimovet [89]
I believe the answer is B: 3 + 7 + (-10).
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3 years ago
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I suck at math don't judge.. 9/8 divided by 3/6 =? i got an answer just don't know if i'm correct
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Its 2.25 I believe ..............
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Solve x and y 3x-4y=18,9x-2y=12
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Answer:

3x-4y=18

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xy=18 ans

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