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maria [59]
3 years ago
10

Can someone please help? :)

Mathematics
2 answers:
Digiron [165]3 years ago
7 0
( -3,4 ) let me know if you need an extension
ANTONII [103]3 years ago
4 0
Use photomath on these types of questions it works best!!
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The life expectancy in the US is 75 with a standard deviation of 7 years. A random sample of 49 individuals is selected. What is
victus00 [196]

Answer:

0.02275

Step-by-step explanation:

We use this z score formula to solve for this question

z-score is is z = (x-μ)/σ/√n

where x is the raw score

μ is the population mean

σ is the population standard deviation

From the above question,

x = 77

μ = 75

σ = 7

number of samples = 49

Hence, the z score = 77 - 75/ (7/√49)

= 2/(7/7)

= 2/1

= 2

Hence, the z score = 2

Using the z table to find probability

P(x<77) = 0.97725

P(x>77) = 1 - P(x<77)

= 1 - 0.97725

= 0.02275

Therefore, the probability that the same mean will be larger than 77 years

is 0.02275

7 0
3 years ago
What is 5/16 divided by 2/3
gayaneshka [121]
You take 5/16 division you change it in matplication 3 goes up and 2 comes down so you numbers will be
5/16 times 3/2 you take 5 time3 is 15 and 16 times 2 is 32
So ur answer will be 15/32
8 0
3 years ago
70 hundred is equal to how many thousands
Ann [662]
70 x 100 = 7,000

Therefore, 70 hundred is equal to 7 thousands.
8 0
3 years ago
What is 0.7, 7/9, 7/8 in order from greatest to least
Sphinxa [80]
Simple...

change them all into fractions or decimals...

0.7---> 0.7

\frac{7}{9}-->>0.77

\frac{7}{8}--->>0.875

Ordering from greatest to least....

0.875-->>0.77-->>0.7

\frac{7}{8}-->>\frac{7}{9}-->>0.7

Thud, your answer.

5 0
3 years ago
Write an equation of the line that passes through (2 -5) and is parallel to the line 2y=3x+10
andrey2020 [161]

Step-by-step explanation:

Given equation is

2y = 3x + 10

3x - 2y + 10 = 0 .....i)

Any line parallel to line I) is

3x - 2y + k = 0 ......ii)

As the line two passes through the point ( 2 , - 5 ) Now substituting the values

3 * 2 - 2 * ( - 5) + k = 0

6 + 10 + k = 0

16 + k = 0

k = - 16

Now putting the value of k in equation two

3x - 2y + 16 = 0 is the required equation.

Hope it will help :)❤

8 0
3 years ago
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