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nalin [4]
2 years ago
13

Of the 8760 hours in a year, most televisions are on for 2190 hours. What percent is this

Mathematics
1 answer:
Dimas [21]2 years ago
7 0

Answer:

Hello!! Your answer is 25% I think!

Hope this helps!!

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HELP ME PLZZ asap I really need it
Furkat [3]

Answer:

20) 2/32 so colour 2 boxes

21) 7/16

22) 2/60

23) 3/8

24) 35/63 or 5/9

25) 7/32

26) 45/60 or 9/12 or 3/4

27) 1/32

28) 3/21 or 1/7

29) 13/6 × 9/2

= 117/12

30) 3/4 × 17/2

= 51/8

31) 9/8 × 10/3

= 90/24

= 45/12

= 15/4

32) 16/5 × 2/3

= 32/15

sorry if theres any calculation mistake becoz i did all the calculations in mind

Step-by-step explanation:

5 0
3 years ago
The local swim team is considering offering a new semi-private class aimed at entry-level swimmers, but needs a minimum number o
SCORPION-xisa [38]

Answer:

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

Step-by-step explanation:

For this case we define the random variable X as the number of entry-level swimmers and we are interested about the true population mean for this variable . On specific we want to test this:

Null hypothesis: \mu \leq 15

Alternative hypothesis: \mu > 15

And the statistic is given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

7 0
3 years ago
How many hours is 30 6000 seconds
juin [17]

Answer:

1 hour

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help fast please!!! Find the missing lengths of the sides.
3241004551 [841]

Answer:

a = 12 ft, b = 12 ft

Step-by-step explanation:

The triangle is 45 45 90 right triangle

so a = b

Ratio of leg : hypo. = a : a√2

Given hypo = 12√2, so legs a = b = 12

Answer

a = 12 ft, b = 12 ft

8 0
3 years ago
Quick question, is this the same as this???
salantis [7]
Your first steps are correct.  Mult. the given fraction by (1+sqrt(5)) / (1+sqrt(5)).

Result:  8(1 + sqrt(5) )       8(1 + sqrt(5) )
             ------------------- = ----------------------
                 1 - 5                         -4

Must keep that denominator (-4).
8 0
3 years ago
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