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Tema [17]
3 years ago
5

Please help!!!! At a gymnastics meet, a gymnast scored an 8.95 on the vault and a 9.2 on uneven bars. Write two equivalent expre

ssions that could be used to find her total score. NO LINKSSSSSSSSSSSSSSSSSSSSSSSSSSS
Mathematics
1 answer:
inna [77]3 years ago
5 0

Answer:

8.95 + 9.2 = 18.15

9.2 + 8.95 = 18.15

Step-by-step explanation:

8.95 + 9.2 = 18.15

9.2 + 8.95 = 18.15

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Given a sample mean difference of 23, a standard error of 4.2, and a critical t value of 2.262, what are the values for the conf
erastova [34]

Answer: (13.4996, 32.5004)

Step-by-step explanation:

The confidence interval for mean difference is given by :-

(\overline{x}_1-\overline{x}_2)\pm t^*\times SE ,

where (\overline{x}_1-\overline{x}_2) = sample mean difference .

t^*= critical t value (two-tailed)

SE= Standard error.

Given : (\overline{x}_1-\overline{x}_2)=23

t^*=2.262

SE= 4.2

Now, the confidence interval for mean difference will be :-

23\pm (2.262)\times (4.2)\\\\= 23\pm9.5004\\\\=(23-9.5004,\ 23+9.5004)\\\\=(13.4996,\ 32.5004)

Hence, the required confidence interval : (13.4996, 32.5004)

8 0
2 years ago
What is the value of 3.2n when n=5
Lady bird [3.3K]
3.2n=3.2*5

3.2*5=16 the answer is 16

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7 0
3 years ago
Solve the system of linear equations in two variables by elimination or substitution.
taurus [48]

Answer:

( \frac{1}{2}, 0 )

Step-by-step explanation:

Given the 2 equations

4x + 3y = 2 → (1)

2x - 3y = 1 → (2)

Adding (1) and (2) term by term will eliminate the y- term, that is

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Substitute x = \frac{1}{2} into either of the 2 equations and evaluate for y

Substituting into (1)

4(\frac{1}{2} ) + 3y = 2

2 + 3y = 2 ( subtract 2 from both sides )

3y = 0 ⇒ y = 0

Solution is ( \frac{1}{2}, 0 )

8 0
2 years ago
Can u guys tell me if this is right or not? Plz answer quick
Soloha48 [4]

Answer:

It look right to me

Step-by-step explanation:

6 0
3 years ago
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Write the fraction below as a sum or difference. 5x + 2 over 7​
kap26 [50]

Answer:

f ^-1 (x) =7X/5 - 2/5

Step-by-step explanation:

7 0
3 years ago
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