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2 years ago

I’m very stuck and someone give the answer

Mathematics

1 answer:

svlad2 [7]2 years ago

7 0

Answer:

since there are 30 students as a whole and 20 boys make up part of the class, you can assume that there are 10 girls in the class. since the mean mark for boys is 62 I think the mean mark for girls would be 8%

Step-by-step explanation:

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There are 15 copies of a popular cd left to be sold in the store this is between 1% and 1.5% of the original number of copies of

Triss [41]

Answer: The original number of CDs is between 1000 and 1500.

Step-by-step explanation:

Since we have given that

Number of copies of a popular CD left to be sold in the store = 15

According to question, this is between 15 and 1.5% of the original number of copies of the CD in the store.

Let the original number of copies of the CD in the store be 'x'.

Now, 15 is equal to 1% of the original number of copies of the CD, it becomes

$1\%\ of\ x=15\\\\\frac{1}{100}\times x=15\\\\x=15\times 100\\\\x=1500$

Or if 15 is equal to 1.5% of the original number of copies of the CD, it becomes

$1.5\%\ of\ x=15\\\\\frac{1.5}{100}\times x=15\\\\\frac{15}{1000}x=15\\\\x=\frac{15\times 1000}{15}\\\\x=1000$

Hence, the original number of CDs is between 1000 and 1500.

3 0

2 years ago

The ordered pairs in the table below represent a linear function.

Lilit [14]

Answer:

The slope is 2

Step-by-step explanation:

Given

x y

2 3

5 9

Required

Determine the slope

First, we have:

$(x_1,y_1) = (2,3)$

$(x_2,y_2) = (5,9)$

The slope is then calculated as:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

This gives:

$m = \frac{9-3}{5-2}$

$m = \frac{6}{3}$

$m =2$

<em>Hence, the slope is 2.</em>

5 0

2 years ago

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Determine whether the quadrilateral is a parallelogram. Justify you answer.

agasfer [191]

Answer:

It is a quadrilateral.

Step-by-step explanation:

Quadrilateral is a 4-sided shape where the total angles is 360°.

So when you add up all the angles, you will get 360°.

4 0

2 years ago

Which algebraic expressions are polynomials

ivolga24 [154]

Answer:

2,3,5,6

Step-by-step explanation:

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Brainliest if correct

Rzqust [24]

Answer:

the answer is c

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2 years ago