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borishaifa [10]
3 years ago
11

Please solve the problems attached in the pictures. Thanks!

Mathematics
1 answer:
UNO [17]3 years ago
5 0
I think it is 3x-3y+z=12
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Simplify the radical expression 5√7+2√175
yanalaym [24]
5\sqrt{7} + 2\sqrt{175}=5\sqrt{7}+2\sqrt{25 \cdot 7}=5\sqrt{7}+ 2 \cdot \sqrt{25} \cdot \sqrt{7}= \\ \\ = 5\sqrt{7}+2 \cdot 5 \cdot \sqrt{7}=5\sqrt{7}+10\sqrt{7}=\boxed{15\sqrt{7}} \approx 39.69

remember about formula \sqrt{ab} = \sqrt{a} \cdot \sqrt{b}
5 0
3 years ago
20 1/8-11/40 and is has to be a fraction
dem82 [27]

Answer:

397/20

Step-by-step explanation:

i think?

if im wrong im sorry

3 0
2 years ago
Read 2 more answers
I increase a number by 24% the answer is 6014 what number did I start with
miskamm [114]

Answer:

1443.36

Step-by-step explanation:

6014*.24=1443.36

Hope it helps

8 0
3 years ago
Consider two x distributions corresponding to the same x distribution. The first x distribution is based on samples of size n =
Tanya [424]

Answer:

The distribution with n = 225 will give a smaller standard error.

Since sigma x = sigma/√n, dividing by the square root of 225 will result in a small standard error regardless of the value of sigma.

Step-by-step explanation:

Standard error is given by standard deviation (sigma) divided by square root of sample size (√n).

The distribution with n = 225 would give a smaller standard error because the square root of 225 is 15. The inverse of 15 multiplied by sigma is approximately 0.07sigma which is smaller compared to the distribution n = 100. Square of 100 is 10, inverse of 10 multiplied by sigma is 0.1sigma.

0.07sigma is smaller than 0.1sigma

8 0
3 years ago
Anyone knows the answer
Nastasia [14]
3, 2,1 , 4
A(n) is like the y value
a is like y-int
n-1 is like the x value
d is like the slope
3 0
3 years ago
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