4 years ago

Geometry

Mathematics

1 answer:

SSSSS [86.1K]4 years ago

7 0

Sorry man, don’t know it, hopefully you get someone who knows

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One jug of plant food treats an area of 135 square ft. How many jugs Would be needed to treat an area of 165 square yards (try w

geniusboy [140]

$\frac{165}{135} = x$

I hope this helps!

8 0

4 years ago

In a random sample of 40 refrigerators, the mean repair cost was $150. Assume the population standard deviation is $15.50. Const

Mama L [17]

Answer: ($143.69, $156.31)

Step-by-step explanation:

Confidence interval to estimate population mean :

$\overline{x}\ \pm z\dfrac{\sigma}{\sqrt{n}}$

, where $\sigma$ = population standard deviation

n= sample size

$\overline{x}=$ Sample mean

z= critical value.

As per given,

n= 40

$\sigma$ = $15.50

$\overline{x}=$ $150

Critical value for 99% confidence level = 2.576

Then, 99% confidence interval for the population mean:

$150\pm(2.576)\dfrac{15.50}{\sqrt{40}}\\\\\Rightarrow\ 150\pm6.31 \ \ (approx)\\\\\Rightarrow(150-6.31,150+6.31)=(143.69,156.31)$

Hence, the required confidence interval : ($143.69, $156.31)

6 0

4 years ago

The table shows the heights y (in feet) of a baseball x seconds after it was hit. Predict the height after 5 seconds

Mandarinka [93]

Answer:

3 feet

Step-by-step explanation:

7 0

3 years ago

i found 3 boxes of marker. each box had 10 markers inside.if i shared the markers i found 5 friendSs how many markers will each

Strike441 [17]

So, 3 boxes x 10 markers=

30 markers/ 5=

6 markers each person will get.

6 0

3 years ago

Read 2 more answers

If 12 men earn $810 in 10 days how much will 14 men earn in 8 days, if the daily wage is the same for each man

kogti [31]

1 man earns 810 / 12 = $67.5 in 10 days
by proportion 1 man will earn 0.8 * 67.5 = $54 in 8 days

So 14 men will earn 54 * 14 = $756 in 8 days.

5 0

3 years ago