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Wittaler [7]
3 years ago
9

Help me please it will save my life​

Mathematics
2 answers:
Dvinal [7]3 years ago
8 0

Answer: 197

Step-by-step explanation: square 28 + square 195 = x squared so then find the sqrt of that

Sauron [17]3 years ago
6 0
The correct answer would be 197
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Geometry: Area... triangles and squares
vodka [1.7K]

Answer:

The answer is A

Step-by-step explanation:

5 0
3 years ago
A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced.
zzz [600]

Answer:

CI=(66.54,78.46)                                  

Step-by-step explanation:

Given : A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced. The mean yield of the 10 batches is 72.5% and the standard deviation is 5.8%. Assume the yields are independent and approximately normally distributed.

To find : A 99% confidence interval for the mean yield when the new catalyst is used ?

Solution :

Let X be the yield of the batches.

We have given, n=10 , \bar{X}=72.5\% , s=5.8%

Since the size of the sample is small.

We will use the student's t statistic to construct a 995 confidence interval.

\bar X\pm t_{n-1,\frac{\alpha}{2}}\frac{s}{\sqrt n}

From the t-table with 9 degree of freedom for \frac{\alpha}{2}=0.005

t_{n-1,\frac{\alpha}{2}}=t_{9,0.005}

t_{n-1,\frac{\alpha}{2}}=3.250

The 99% confidence interval is given by,

CI=72.5 \pm 3.25\frac{5.8}{\sqrt{10}}

CI=72.5 \pm 5.96

CI=(72.5+5.96),(72.5-5.96)

CI=(66.54,78.46)

8 0
3 years ago
Solve all of them please u get 30 points​
nika2105 [10]

Step-by-step explanation:

from which text book please

8 0
2 years ago
Read 2 more answers
Find the missing side of the triangle​
artcher [175]

Answer:

12

Step-by-step explanation:

Use pythag to solve.

x^2+5^2=13^2

x=12

4 0
3 years ago
What is four hundred twenty-eight and forty-six hundredths written in standard form? 5th grade
Akimi4 [234]

Answer:

4.2846*10^2

Step-by-step explanation:

428.46

4.2846*10^2 hopefully

6 0
3 years ago
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