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photoshop1234 [79]
2 years ago
13

What is 13x4=nx26 and tell me the answer

Mathematics
1 answer:
stira [4]2 years ago
8 0

Answer:

There are a couple different solutions to your equation:

x=0

x=\sqrt[22]{\frac{13}{n}}

x=-\sqrt[22]{\frac{13}{n}}

\:n\ne \:0

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Which equation can be used to find the volume of a sphere that has a radius of 9 miles?
Licemer1 [7]
V=(4/3)pir^3

r=9
V=(4/3)pi9^3
V=12pi243
V=972pi

aprox pi=3.14
3052.08 mi^3
6 0
3 years ago
In a sample of eight whitefish caught in Yellowknife Bay, the mean arsenic concentration in the liver was 0.32 mg/kg, with a sta
Advocard [28]

Answer:

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 8 - 1 = 7

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 7 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.3246

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.3646\frac{0.06}{\sqrt{8}} = 0.0502

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 0.32 - 0.0502 = 0.2698 mg/kg

The upper end of the interval is the sample mean added to M. So it is 0.32 + 0.0502 = 0.3702 mg/kg

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

8 0
2 years ago
What is the value of 0.6 + 0.3? Write your answer as a fraction in lowest terms
Allisa [31]
9/10 i the answer i believe
3 0
3 years ago
The food is made up of 1 part sugar and 4 parts water. She uses 34 cup of sugar to make the hummingbird food. How much water sho
mash [69]
34*4=136 cups of water
7 0
2 years ago
20 POINTS Please show work!
hoa [83]

Answer:

k=2

Step-by-step explanation:

7(k+8)=70

We move all terms to the left:

7(k+8)-(70)=0

We multiply parentheses

7k+56-70=0

We add all the numbers together, and all the variables

7k-14=0

We move all terms containing k to the left, all other terms to the right

7k=14

k=14/7

k=2

7 0
2 years ago
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