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kolezko [41]
2 years ago
10

Fill in the blank: 65 + ______ - 15 = 65

Mathematics
2 answers:
katrin2010 [14]2 years ago
7 0

Answer:

15

Step-by-step explanation:

65+15-15=65

SIZIF [17.4K]2 years ago
4 0

Answer:

65+15-15=65 can be the answer!!

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2 years ago
A sample of 64 observations has been selected to test whether the population mean is smaller than 15. The sample showed an avera
KengaRu [80]

Answer:

Test statistic = - 0.851063

- 2.520463

Step-by-step explanation:

H0 : μ ≥ 15

H1 : μ < 15

Sample mean, xbar = 14.5

Sample standard deviation, s = 4.7

Sample size = 64

Teat statistic :

(xbar - μ) ÷ (s/√(n))

(14.5 - 15) ÷ (4.7/√(64))

= - 0.851063

The critical value at α = 0.05

Using the T - distribution :

Degree of freedom, df = 64 - 1 = 63

Tcritical(0.05, 63) = 1.6694

Test statistic - critical value

-0.851063 - 1.6694

= - 2.520463

8 0
3 years ago
Solve for the missing piece. Round answer to the nearest tenth when necessary.
galina1969 [7]

Answer:

21.0

Step-by-step explanation:

SOHCAHTOA

In this case you would be using TOA

tan (x) = opposite/ adjacent

tan (51) = x / 17

x = 17 tan (51)

x = 20.9932

x= 21.0

4 0
3 years ago
What is the answer please help me no links
Elan Coil [88]

Answer:

C= 2.18x + 2.39

Step-by-step explanation:

3 0
3 years ago
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