Ask question

Ask question

All categories

3 years ago

12

When building the swings for ionta playground the construction crew bought 72 feet of chain however the company that makes the c

hain only sold it by the yard how many yards did they buy

1 answer:

Llana [10]3 years ago

7 0

Answer:

24 yards of chain were sold

Step-by-step explanation:

1 ft = 1/3 yd

72 * 1/3 = 24

You might be interested in

Please help offering All my pts and brainliest answer

Ira Lisetskai [31]

X2-1 I think that's the answer because there's 1 less, 1 take away the x and squared!! hard to explain but that's how I thought about it

4 0

3 years ago

Read 2 more answers

Please do correctly! I will mark you Brainliest!

AfilCa [17]

Answer: What question am I answering

Step-by-step explanation:

5 0

2 years ago

What is the equation of the axis of symmetry of a parabola if its x-intercepts are -3 and 5?

levacccp [35]

-3 + 5/ 2 = 1
therefore the axis of symmetry is x=1

4 0

3 years ago

Four people share 2/5 pound of peanuts equally. What fraction of a pound of peanuts does each person receive? Enter your answer

RSB [31]

Answer:

1/10

Step-by-step explanation:

5 0

2 years ago

The town of Hayward (CA) has about 50,000 registered voters. A political research firm takes a simple random sample of 500 of th

Ilia_Sergeevich [38]

Answer:

(0.0757;0.1403)

Step-by-step explanation:

1) Data given and notation

Republicans =115

Democrats=331

Independents=54

Total= n= 115+331+54=500

$\hat p_{ind}=\frac{54}{500}=0.108$

Confidence=0.98=98%

2) Formula to use

The population proportion have the following distribution

$\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

The confidence interval for the population proportion is given by this formula

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

We have the proportion of independents calculated

$\hat p_{ind}=\frac{54}{500}=0.108$

We can calculate $\alpha=1-conf=1-0.98=0.02$

And we can find $\alpha/2 =0.02/2=0.01$ , with this value we can find the critical value $z_{\alpha/2}$ using the normal distribution table, excel or a calculator.

On this case $z_{\alpha/2}=2.326$

3) Calculating the interval

And now we can calculate the interval:

$0.108 - 2.326\sqrt{\frac{0.108(1-0.108)}{500}}=0.0757$

$0.108 + 2.326\sqrt{\frac{0.108(1-0.108)}{500}}=0.1403$

So the 98% confidence interval for this case would be:

(0.0757;0.1403)

7 0

3 years ago