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2 years ago

15

Can someone please explain the steps to solve these questions.

1 answer:

Amiraneli [1.4K]2 years ago

3 0

Alright! So to solve these questions, you need to find out the difference. You can use ratios to solve this. For example, question #25:

A class had 30 pupils at the beginning of this school term, but now has 5 more pupils. What is the percent of increase?

The question is basically asking how much 5 is in ratio to 30. So just divide 5 (the given amount) by 30 (the total amount). The answer is 0.16, or 16%

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Solve for x: 6x – 8y = 12

Tcecarenko [31]

Hi there!

Since we have 2 variables in the given equation, and you only want to solve for one, the other will end up in your answer.

$6x + 8y = 12$

Step 1) Add 8y to both sides.

$6x - 8y + 8y = 12 + 8y 6x = 8y + 12$

Step 2) Divide both sides by 6.

$\frac{6x}{6} = \frac{8y + 12}{6}$

$x = \frac{4}{3} y + 2$

Final Answer -

$x = \frac{4}{3} y + 2$

Hope this helps! :D

7 0

2 years ago

Read 2 more answers

What is the answer to 9% of 65?

garri49 [273]

Answer:

5.85

Step-by-step explanation:

9% of 65 (sorry forgot i was answering this)

3 0

2 years ago

Read 2 more answers

A train 100 m long crosses a pole in 5 seconds.Find the speed of the train in kilometre per hour.

In-s [12.5K]

Answer:

$\sf72 km/h$

Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

$\sf Time \: taken=5 \: seconds$

$\sf \: Speed \: of \: the \: train = \frac{Distance }{Time}$

$\sf = \frac{100}{5} \: m/s$

$\sf \: = 20 \: m/s$

$\sf \: = 20 \times \frac{18}{5} \: km/h$

$\sf = 72 \: km/h$

Hence, the speed of the train is 72 km/h

6 0

2 years ago

You have 12 1/3 yards and you need 47 yards how many more yards of fabric do you need

Lady bird [3.3K]

Answer:

34 2/3

Step-by-step explanation:

You need 47 yards. You have 12 1/3

47 - 12 1/3. So we'll break it down.

47 - 12 = 35.

Now, 35 + 12 1/3 would make 47 1/3

So now 35 - 1/3=34 2/3

34 2/3 + 12 1/3 = 47

4 0

2 years ago

QUESTION 27<br>Find the value of p in the equation 2p over 7=7<br><br><br>

ASHA 777 [7]

Answer:

24.5

Step-by-step explanation:

2p/7 = 7

cross multiply

2p = 49

p = 24.9

5 0

3 years ago