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3 years ago

This is to Hard For Me, Please Help Me

Mathematics

1 answer:

dlinn [17]3 years ago

7 0

I think A.

Because equation of function is y=x-1 .That area in down of this line and it doesn't include the line.So answer is y<x-1.

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34.74 ÷ 1.2 Solve without using a calculator :)

Citrus2011 [14]

Answer:

28.95

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bm%7D%7B%20-%207%7D%20%20%3C%202" id="TexFormula1" title=" \frac{m}{ - 7} < 2"

aksik [14]

Answer:

$m = -14$

Step-by-step explanation:

Solved for $m$ ! If you need the inequality to $m$ I'd love to help!

8 0

2 years ago

When engaging in weight-control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maxim

Nimfa-mama [501]

Answer:

a) standard error of the mean =10.06

b) The margin of error = 17.3982

c) 95% of confidence intervals are

$(89.6018 ,124.3982)$

d) Lower limit of 95% of confidence interval = 89.6018

upper limit of 95% of confidence interval = 124.3982

The Population mean is lies between in these intervals

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 20

Given sample mean was found to be 107 bpm with a standard deviation of 45 bpm.

Sample mean $x^{-} = 107 bpm$

Sample standard deviation (S) = 45 bpm

a) standard error of the mean is determined by

$S.E = \frac{S}{\sqrt{n} } = \frac{45}{\sqrt{20} }$

S.E = 10.06

b) The margin of error is determined by

$M.E = \frac{t_{\alpha } X S }{\sqrt{n} }$

The degrees of freedom ν $= n-1 =20-1=19$

$t_{\alpha } = 1.729$

$M.E = \frac{1.729X 45}{\sqrt{20} }$

$M.E = \frac{77.805 }{4.472 } = 17.3982$

c) 95% of confidence intervals are determined by

$(x^{-} - t_{\alpha } \frac{S}{\sqrt{n} } , x^{-} + t_{\alpha } \frac{S}{\sqrt{n} } )$

$(107 - 1.729\frac{45}{\sqrt{20} } , 107 + 1.729\frac{45}{\sqrt{20} } )$

$(107 - 17.3982 } , 107 +17.3982 )$

$(89.6018 ,124.3982)$

d)

Lower limit of 95% of confidence interval = 89.6018

upper limit of 95% of confidence interval = 124.3982

The Population mean is lies between in these intervals

4 0

3 years ago

In two supplementary angles,the measure of one angle is 6 more than twice the measure of the other. the measures of these two an

Natasha2012 [34]

6 + 2y = x
x + y = 180°

6 + 2y + y = 180°
3y = 174
y = 58°

x = 180° - 58°
x = 122°

i am a mathematics teacher. if anything to ask please pm me

3 0

3 years ago

Which sport is required to have both male and female competitors ?

Alexeev081 [22]

Answer:

Mixed Doubles Tennis

Step-by-step explanation:

The key word is "mixed." In this case it means a male and female competitor

5 0

1 year ago