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3 years ago

Help me on B plz cant work it out

Mathematics

1 answer:

Nookie1986 [14]3 years ago

6 0

Answer:

1kg = 1000g

400g = 0,4 kg

0,4 - 1

1 - n

multiply diagonally

0,4*n = 1

n=10/4=2,5

1:2,5 is correct answer

Step-by-step explanation:

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3/4h*19mi/1/4h. Can you please help me I need an answer by tonight

aniked [119]

Answer:

$57mi$

Step-by-step explanation:

we have

$\frac{3}{4}h*19mi/\frac{1}{4}h$

we know that

$\frac{3}{4}h*19mi/\frac{1}{4}h=\frac{(3/4)h}{(1/4)h}*19mi\\ \\=3*19mi\\ \\=57mi$

4 0

3 years ago

As part of a grand opening, an arcade gave out free tokens to the first 100 customers. If you spent $5, you got 61 tokens. If yo

allsm [11]

Answer:

your teacher is they are giving out FREEE tokens so why do you have to pay

Step-by-step explanation

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2 years ago

Cameron is trying to ear eleven dollars for some new toys. If he charges three dollars to mow a lawn how many lawns will he need

7nadin3 [17]

Answer:

Cameron need to mow 4 lawns.

Step-by-step explanation:

Cameron needs 11$ for some new toys.

But he charges 3$ to mow a lawn.

So, he needs to mow 11/3= 3.66... lawns

The number of lawns can not be decimal. So, let's round to next whole number as 4.

3 0

2 years ago

Please answer as soon as possible

Anna71 [15]

Answer:

Option A

Step-by-step explanation:

multiply 2/7 and 3/4

you get 6/28

then simplify

you get 3/14

8 0

3 years ago

A company selling light bulbs claims in its advertisements that its light bulbs’ average life is 1000 hours. In fact, the life s

tamaranim1 [39]

Answer:

15.87%

Step-by-step explanation:

Given that:

The mean (μ) = 1000 hours, the standard deviation (σ) = 100 hours.

The z score provides a means of measurement in statistics to determine the variation of a raw score from the mean. The z score is given as:

$z=\frac{x-\mu}{\sigma}$

To find that a randomly chosen light bulb will last less than 900 hours:

$z=\frac{x-\mu}{\sigma}=\frac{9000-1000}{100}=-1$

Therefore, P(x < 900) = P(z < -1) = 0.1587 = 15.87%

7 0

2 years ago