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Mathematics

1 answer:

-BARSIC- [3]3 years ago

6 0

Step-by-step explanation:

A school needs 2,2337 notepads. They come in packs of 20. This is a common question.

Start by finding out how many packs of 20 go into 2,337. This is done by doing the division 2337 ÷ 20. This finds the answer 116. The remainder is 17. Hmm. The school cannot buy 116 packs of notepads otherwise they would be 17 short ( the remainder), so they buy one extra pack-117 packs. This extra pack covers the extra 17, even though there are no packs of 17, only 20. This means they will have three spare.

The answer is 117 packs.

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Write an equation in point slope form for the line that has a slope of 9/4 and contains the point (3, -4)

KonstantinChe [14]

Answer:

$y+4=\frac{9}{4} (x-3)$

Step-by-step explanation:

Given:

Slope which is $m$ , that is $\frac{9}{4}$

Line containing $point$ , that is $(3,-4)$

We need to write an equation in point slope form for the line.

Solution:

As we know that $(x_1,y_1)= (3, -4)$

As we know the equation of line in point slope form is $y-y_1=m(x-x_1)$

Let us know plug the value:

$y-y_1=m(x-x_1)$

$y-(-4)=\frac{9}{4} (x-3)$

⇒ $y+4=\frac{9}{4} (x-3)$

Hence, the equation in point slope form for the line that has a slope of $\frac{9}{4}$ is $y+4=\frac{9}{4} (x-3)$ .

7 0

3 years ago

Mrs aleaze tells her stuents there will be 50 questions on their test and 20 percent of them will be word problems how much prob

timofeeve [1]

The word problem only gives you two numbers, so it would be easy to assume that the questions involves those two numbers. However, in this case, the question requires that you calculate another answer first: the number of questions Abel got right. You'll need to subtract 4 from 80, then calculate the percentage of the difference:

80-4=78, and 78/80*100=97.5 percent So it will be 50

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3 years ago

At constant temperature, the pressure of a sample of gas is inversely proportional to its volume. I have some hydrogen in a 3.67

Liula [17]

The new pressure will be 8 kPa.

Explanation

Lets assume, the pressure of the gas is P and volume is V.

P is inversely proportional to V means : $P= \frac{k}{V}$ , where $k$ is a proportional constant.