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Paraphin [41]
3 years ago
5

13.

Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0

Answer:

8

Step-by-step explanation:

√(64)

Margarita [4]3 years ago
7 0

Answer:

One side of the square is 8 cm

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What % of 60 is 35?
STatiana [176]

Answer:

58.33%

Step-by-step explanation:

  is            %

--------  =  ---------

  of           100

Just plug in the numbers based on what it tells you.

What % = goes in the % spot

of 60 = goes in the of spot

is 35 = goes in the is spot

  35          x

--------- = ---------

  60         100

Cross multiply:

60 * x = 60x        35 * 100 = 3500

60x = 3500

Divide by 60 to get x by itself.

3500 / 60 = 58.33

Put the percent sign after it:

58.33%

I hope this helps.

8 0
3 years ago
Read 2 more answers
Chosse the replacement for x that makes the equation a true statement.
natita [175]

Answer:

x=-8

Step-by-step explanation:

16x+35 = -93

subtract 35 from each side

16x = -93 -35

16x = -128

divide each side by 16

x = -128/16

x=-8


8 0
3 years ago
Read 2 more answers
A pair of coins is tossed. What is the probability of no tails? <br> 0 <br> 1/2 <br> 1/4
lesya [120]
0 cannot be the answer. It makes no sense because you can get a probability of getting tails when flipping a coin.

The answer would be 1/2. You have '2' choices (heads or tails) and 1 out of those 2 times would you possibly get tails.
4 0
3 years ago
Read 2 more answers
How are coastal dunes and coastal plains similar?
Liula [17]

Answer:

Hey dear mate!!. Here's is ur answer ^____^.   ✔this is Becoz of " both have low elevation ".  Dear:( hope its helps ☺

Step-by-step explanation:

its both have low elevation

5 0
3 years ago
Read 2 more answers
Mr. Good Wrench advertises that a customer will have to wait no more than 30 minutes for an oil change. A sample of 26 oil chang
Andru [333]

Answer:

The 90% confidence interval for the population standard deviation waiting time for an oil change is (3.9, 6.3).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the population standard deviation is:

CI=\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2, (n-1)}}}\leq \sigma\leq \sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2, (n-1)}}}

The information provided is:

<em>n</em> = 26

<em>s</em> = 4.8 minutes

Confidence level = 90%

Compute the critical values of Chi-square as follows:

\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.10/2, (26-1)}=\chi^{2}_{0.05, 25}=37.652

\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{1-0.10/2, (26-1)}=\chi^{2}_{0.95, 25}=14.611

*Use a Chi-square table.

Compute the 90% confidence interval for the population standard deviation waiting time for an oil change as follows:

CI=\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2, (n-1)}}}\leq \sigma\leq \sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2, (n-1)}}}

     =\sqrt{\frac{(26-1)\times 4.8^{2}}{37.652}}\leq \sigma\leq \sqrt{\frac{(26-1)\times 4.8^{2}}{14.611}}\\\\=3.9113\leq \sigma\leq 6.2787\\\\\approx 3.9 \leq \sigma\leq6.3

Thus, the 90% confidence interval for the population standard deviation waiting time for an oil change is (3.9, 6.3).

3 0
3 years ago
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