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Radda [10]
3 years ago
8

I NEED HELP ASAP I DONT UNDERSTAND THIS!!

Mathematics
1 answer:
zheka24 [161]3 years ago
3 0

Let the cost of the hair dryer equal x.

The net cost plus a 40% markup equals 42, set up an equation and solve forex.

1.4x = 42

Divide both sides by 1.4

X = 42 / 1.4

X = 30

The net cost was £30

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marissa [1.9K]
I don't know seems hard.
7 0
3 years ago
Can someone please explain to me how to work this out?
Ludmilka [50]

Answer:

B

Step-by-step explanation:

the way i work it out is if you take the product and power it to the third you can easily find out which answer is correct. another way, if you don't have a calculator is to look at the last digit in the number in the square root sign.

For example, 3 square root 64 equals 8. you would look at the 4 and try to find 3 numbers that end in 4 OR is divisible three times by the number. 64 is exactly divisible by 4 only 3 times so you know that it can't be 8.

hope this helps!

3 0
3 years ago
Calculate the distance between the points!
Nuetrik [128]

Answer:

6.71

Step-by-step explanation:

c=\sqrt{}(3-9)^2+(-1+4)^2

c=√36+9

c=6.71

7 0
3 years ago
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Is a ratio always a rate?
kari74 [83]
No it is not always a rate that was easy
5 0
2 years ago
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Probability: If you roll a regular 6-faced die 1200 times, about how many times would you expect to get a 4?​
just olya [345]

If you roll a six sided dice once, each outcome has a 1/6 probability.

This means 4 has a 1/6 probability.

If you roll a dice 1200 times....

1200 × 1/6 = 1200/6 = 200

You would expect to get a 4 200 times.

6 0
3 years ago
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