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Amiraneli [1.4K]
3 years ago
5

7 : 8 : 9=__:12:__ Make it so that the question is even on both sides

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
4 0

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Find the time (in seconds ) taken for the following journey:<br> 100 km at a speed of 40 km/hour.
Lera25 [3.4K]

Answer:

360,000

1st Step

40 (km per hour) × 60 (minutes in a hour) × 60 (sec per hour)

144000

Find double of the 144000

Ans = 288000

Step 2

Find the half of 144000

Ans = 72000

Step 3

Add The ans of step 1 and 2

Hope it works

3 0
3 years ago
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Write an equation for the line parallel to the given line that contains C. <br><br> C(3,6); y= -2x+7
Anarel [89]

Answer:

y=-2x+12

Step-by-step explanation:

6 0
3 years ago
Rita paid for a $2.95 sandwich and a
Arlecino [84]
Lunch cost $4.14 and she got $5.86
4 0
2 years ago
This is question please hlep me
Llana [10]
I think the answer is a btw hoped it helped
7 0
3 years ago
Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college. You survey 10
neonofarm [45]

Answer: 1.460

Step-by-step explanation:

Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.

Let \mu represents the population mean .

Then, the set of hypothesis will be:-

H_0: \mu=15

H_a:\mu\neq15

We assume that this is normal distribution.

Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.

Sample mean : \overliene{x}=16.2\ lbs

Standard deviation : \sigma=2.6

The test statistic for population mean for small sample is given by :-

t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

t=\dfrac{16.2-15}{\dfrac{2.6}{\sqrt{10}}}=1.45951276623\approx1.460

Hence , the value of test statistic = 1.460

4 0
3 years ago
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