What is half of 1 3/4

2 answers:

8 0

1 3/4
= 1+ 3/4
= 4/4+ 3/4
= (4+3)/4
= 7/4

Half of 1 3/4
= Half of 7/4
= (7/4) /2
= (7/4)* (1/2)
= (7*1)/ (4*2)
= 7/8

Half of 1 3/4 is 7/8.

solong [7]2 years ago

6 0

So half=1/2
half of 1 and 3/4
remember that 1 adn 3/4=1+3/4
'of' means multiply
1/2 times (1+3/4)
distributive property
a(b+c)=ab+ac
1/2 times (1+3/4)=1/1 times 1+1/2 times 3/4=1/2 +3/8
1/2 times 4/4=4/8
1/2+3/8=4/8+3/8=7/8
answer is 7/8

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Solve the linear equation: 3.4 + 2(9.7 – 4.8x) = 61.2 What are the possible steps involved in solving this equation? Check all t

Leno4ka [110]

The answers for the exercise shown above are the second option, the third option, the fifth option and the sixth option, which are:
2) Distribute 2 to 9.7 and −4.8x.
3) Combine 3.4 and 19.4.
5) Substract 22.8 from both sides.
6) Divide both sides by −9.6
The steps are shown below:
3.4+2(9.7-4.8x)=61.2
3.4+19.4-9.6x=61.2
22.8-9.6x=61.2
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How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 95% confidence that

zimovet [89]

Answer:

61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.

Step-by-step explanation:

Given : We want 95% confidence that the sample mean is within 3 minutes of the population mean, and the population standard deviation is known to be 12 minutes.

To find : How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters?

Solution :

At 95% confidence the z-value is z=1.96

The sample mean is within 3 minutes of the population mean i.e. margin of error is E=3 minutes

The population standard deviation is s=12 minutes

n is the number of sample

The formula of margin of error is given by,

$E=\frac{s\times z}{\sqrt{n}}$