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3 years ago

Pls answer this math question

Mathematics

2 answers:

Alex17521 [72]3 years ago

8 0

Answer:

I'd like to take a look at your question?

also I need some help with Math as well

Ad libitum [116K]3 years ago

6 0

What question??? (20 characters)

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In the figure below,S is between Q and T and R is the midpoint of QS. If RT=9 And RS=4 find QT

LiRa [457]

Answer:

QT = 13

Step-by-step explanation:

since R is the midpoint of QS, QR = RS = 4

QT = RT + QR = 9 + 4 = 13

3 0

3 years ago

A sport store donates basketballs and soccer balls the ratio to basket balls and soccer balls is 7:6. The soccer store donates 2

polet [3.4K]

Answer:

Step-by-step explanation:

cause its easy

8 0

4 years ago

Read 2 more answers

Victoria is interested in opening her own candy store. She has researched and found that of the 14 stores she investigated, the

Anna71 [15]

Answer:

99% confidence interval for the average start up cost is [76.575 , 123.425].

Step-by-step explanation:

We are given that of the 14 stores Victoria investigated, the average start up cost is 100 thousand dollars with a standard deviation of 29.1 thousand dollars.

So, the pivotal quantity for 99% confidence interval for the population average start up cost is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample average start up cost = 100 thousand dollars

$\sigma$ = sample standard deviation = 29.1 thousand dollars

n = sample of stores = 14

$\mu$ = population average start up cost

So, 99% confidence interval for the average start up cost, $\mu$ is ;

P(-3.012 < $t_1_3$ < 3.012) = 0.99

P(-3.012 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 3.012) = 0.99

P( $-3.012 \times {\frac{s}{\sqrt{n} }$ < ${\bar X - \mu}$ < $3.012 \times {\frac{s}{\sqrt{n} }$ ) = 0.99

P( $\bar X-3.012 \times {\frac{s}{\sqrt{n} }$ < $\mu$ < $\bar X +3.012 \times {\frac{s}{\sqrt{n} }$ ) = 0.99

99% confidence interval for $\mu$ = [ $\bar X-3.012 \times {\frac{s}{\sqrt{n} }$ , $\bar X +3.012 \times {\frac{s}{\sqrt{n} }$ ]

= [ $100-3.012 \times {\frac{29.1}{\sqrt{14} }$ , $100+3.012 \times {\frac{29.1}{\sqrt{14} }$ ]

= [76.575 , 123.425]

Therefore, 99% confidence interval for the population average start up cost for a candy store is [76.575 , 123.425].

8 0

3 years ago

Factorize m²-2mn+n²-9r

san4es73 [151]

Answer:

$(m-n)^{2}-9r$

Step-by-step explanation:

m²-2mn+n²-9r

$(m-n)^{2}-9r$

3 0

3 years ago

ming had some paper with which to make note cards. on her way to her room she found four more pieces to use. in her room she cut

Misha Larkins [42]

There is two halves to a whole sheet ( 1/2 + 1/2 0 1)

Divide the number of halves by 2 to find the number of whole sheets:

14 / 2 = 7 sheets of paper

7 0

3 years ago