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sattari [20]
3 years ago
15

5TH GRADE MATH Find the percent of increase:

Mathematics
2 answers:
Tpy6a [65]3 years ago
8 0

Answer:

2.4

Step-by-step explanation:

castortr0y [4]3 years ago
6 0

Answer:

the increase was by 2.4

Step-by-step explanation:

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A soccer game lasts 90 minutes without running into overtime. The coach
KatRina [158]

Answer: 7 Switches will be made.

Step-by-step explanation:

\frac{90}{12.5}= number of switches

7.2= number of switches

  • however you cannot have a fraction of a switch so you must round it to a whole number, which in this case is 7.

5 0
2 years ago
5 1/3-3 2/4 find the difference
Vinil7 [7]

Answer:

1 10/12

Step-by-step explanation:

Take the fractions and get them to the same bottom number, 12.  So it would be 5 4/12 -  3 6/12.

Take 1 away from 5 to get 4 and the one you pulled would be 12/12(also equal to 1).  4  16/12 - 3  6/12 would be 1  10/12

8 0
3 years ago
Which of the following correctly describes the interval shown?
adoni [48]
B is the correct one
5 0
3 years ago
According to the latest survey the mean world lifespan is 68.8 years the university of Oregon wants to see if the average life s
pishuonlain [190]

Answer:

Step-by-step explanation:

We would set up the hypothesis test.

For the null hypothesis,

µ = 68.8

For the alternative hypothesis,

µ ≠ 68.8

This is a two tailed test.

Since the number of samples is small and no population standard deviation is given, the distribution is a student's t.

Since n = 26,

Degrees of freedom, df = n - 1 = 26 - 1 = 25

t = (x - µ)/(s/√n)

Where

x = sample mean = 72.8

µ = population mean = 68.8

s = samples standard deviation = 2.5

t = (72.8 - 68.8)/(2.5/√26) = 8.16

We would determine the p value using the t test calculator. It becomes

p < 0.00001

Assuming a significance level of 0.05, then

Since alpha, 0.05 > than the p value, then we would reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the average life span of the residence of Oregon differs from the world average.

4 0
3 years ago
3/8 x 2/6 x 4/8 x 5/12
Evgesh-ka [11]

Answer:

\frac{5}{192}

Step-by-step explanation:

\frac{3}{8} * \frac{2}{6} * \frac{4}{8} * \frac{5}{12}

Multiply all numerators

3 * 2 * 4 * 5 = 6 * 20 = 120

Multiply all denominators

8 * 6 * 8 * 12 = 48 * 96 = 4,608

\frac{120}{4608}

Simplify

\frac{5}{192}

Hope this helps :)

3 0
3 years ago
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