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svet-max [94.6K]
3 years ago
15

Question

Mathematics
1 answer:
stepladder [879]3 years ago
4 0

Answer:

He must mow 40 lawns next summer to reach $1000.

Step-by-step explanation:

1000/25=40

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HURRY PLZ
AlekseyPX
6^2 + 20.1^2 =? 22.9^2
36 + 404 does NOT equal 524.41
These do NOT form a right triangle.

10.5^2 + 20.8^2 =? 23.3^2
110.25 + 432.64 = 542.89
Therefore, it is a right triangle.


3 0
4 years ago
Read 2 more answers
Assume that all​ grade-point averages are to be standardized on a scale between 0 and 4. How many​ grade-point averages must be
guapka [62]

Answer:

a) The required sample size  n= 55011,57025

b) The sample size is not practical, because that size is extremely large and   would be very costly to collect, normally the size have to be significant but no to large to avoid cost unnecessary

Step-by-step explanation:

Range

σ = \frac{4-0}{4} = 1

E = 0,011 \\c= 99 %\\⇒ 0,99

Sample size can be determinate using equation:

n=(\frac{Z_{\alpha /2 * σ} }{E})^{2}

Using confidence level desired 99% Z_{\alpha /2} = 2,58

Table used :

<em>Confidence         Z_{\alpha/2 }</em>

<em>         90 %                    1,60</em>

<em>         95 %                    1,96</em>

<em>        </em><em> 99 %                    2,58</em>

<em>        99,9 %                  3,291</em>

So replacing:

n=(\frac{2,58 * 1 }{0,011})^{2}

n= 234,5454545^{2} \\n=55011,57025

6 0
4 years ago
Read 2 more answers
If a 32 ft rope is cut into two sections with one section 7 times as log as the other section, how long is teh shorter piece?
steposvetlana [31]
The total length of the rope = 32 ft
It is cut into two sections, say x and y
But one section is seven times the other, say y=7x (shorter section being x)
Solving for x

x+y =32
x+7x = 32
8x=32
x=32/8 = 4 ft.
Therefore, the shorter piece is 4 ft long.
5 0
3 years ago
NO websites or fake links, inappropriate comments, wired, or not helping comments our your reported and show me your steps to ea
Musya8 [376]
I couldn’t put the answer here here’s a link! Good luck!

Iwaskidding.lol

1. Is 2(1/3)
2. Is 4(1/5)
3. Is 3(1/9)
4. Is 4(1/2)
5. Is 3(1/12)

This is just an educated guess so please think about my answers carefully. Have a good day.
8 0
3 years ago
Simplify 7/the square root of 2 (as a fraction)
ioda

HERE IS YOUR ANSWER.......

7 0
3 years ago
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