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3 years ago

Helpp WITH 2ND AND 4TH LINE !

Mathematics

2 answers:

Slav-nsk [51]3 years ago

8 0

Answer

1. 11.2

2. 8

Step-by-step explanation:

Helen [10]3 years ago

3 0

Answer:

1. x= 11.2

2. x= 8

Step-by-step explanation:

$124+5x=180\\-124 -124\\5x=56\\\frac{5x}{5} = \frac{56}{5} \\ x=11.2$

Check:

$124+5(11.2)=180\\124+56=180\\180=180$

$7x-6=50\\+6 +6\\7x=56\\\frac{7x}{7} = \frac{56}{7} \\x=8$

Check:

$7(8)-6=50\\56-6=50\\50=50$

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A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these so

otez555 [7]

Answer: (0.132132, 0.274368)

Step-by-step explanation:

Given : A simple random sample of 123 people living in Gastown and finds that 25 have an annual income that is below the poverty line.

i.e. n= 123

$\hat{p}=\dfrac{25}{123}\approx0.203252$

Critical value for 95% confidence interval : $z_{\alpha/2}=1.96$

Confidence interval for population :

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

i.e. $0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}$

$0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}\\\\\0.203252\pm0.071118\\\\=(0.20325-0.071118,\ 0.203252+0.071118)\\\\=(0.132132,\ 0.274368)$

Hence, the 95% confidence interval for the true proportion of Gastown residents living below the poverty line : (0.132132, 0.274368)

5 0

3 years ago

If 3* = 1 What will be the value of x?

zvonat [6]

Answer:

X=0

Step-by-step explanation:

It is a law that

${a}^{0} = 1 \: \: \: \:$

Number( a) shouldn't be zero.

5 0

3 years ago

For PE Mr Jones wants to split boys and girls equally into as many mixed groups as possible. There are 168 boys and 60 girls. Ho

Bond [772]

Answer:

Step-by-step explanation:

You need the greatest common factor of 168 and 60.

168 = 2^3 * 3 * 7

60 = 2^2 * 3 * 5

For the GCF, you need common factors with the lower exponent.

Between 2^3 and 2^2, choose 2^2.

Then you have 3 as a common factor.

5 and seven are not common.

GCF = 2^2 * 3 = 12

Answer: 12

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Gnom [1K]

I think D 3 bc the ratio is 12:12

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3 years ago

What is the answer to 5-3x=1-x ??

DaniilM [7]

The correct answer is 6

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3 years ago