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Maurinko [17]
3 years ago
9

7th grade math pls help

Mathematics
2 answers:
katen-ka-za [31]3 years ago
7 0

Answer:

25.12

Step-by-step explanation:

fredd [130]3 years ago
7 0

Answer:50.24

Step-by-step explanation:

u welcome

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Flauer [41]
5/18+7/12

=10/36+21/36

=31/36
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Find the greatest common factor of <br><br> 2x^2-8x
AlexFokin [52]

Answer:

i think it is 2x

5 0
3 years ago
Assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the given sta
Leno4ka [110]

Let p be the proportion. Let c be the given confidence level , n be the sample size.

Given: p=0.3, n=1180, c=0.99

The formula to find the Margin of error is

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

Where z (α/2) is critical value of z.

P(Z < z) = α/2

where α/2 = (1- 0.99) /2 = 0.005

P(Z < z) = 0.005

So in z score table look for probability exactly or close to 0.005 . There is no exact 0.005 probability value in z score table. However there two close values 0.0051 and 0.0049 . It means our required 0.005 value lies between these two probability values.

The z score corresponding to 0.0051 is -2.57 and 0.0049 is -2.58. So the required z score will be average of -2.57 and -2.58

(-2.57) + (-2.58) = -5.15

-5.15/2 = -2.575

For computing margin of error consider positive z score value which is 2.575

The margin of error will be

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

= 2.575  \sqrt{\frac{0.30*(1-0.3)}{1180}}

= 2.575 * 0.0133

ME = 0.0342

The margin of error is 0.0342

7 0
2 years ago
4.) Order the following decimals from greatest to least.<br> 15.9<br> 9.5<br> 1.95<br> 9.15<br> 1.59
olya-2409 [2.1K]
1.59, 1.95, 9.15, 9.5, 15.9
3 0
3 years ago
In the triangle below, what is the measure of А. 50°<br> В. 79<br> C. 90°<br> D. 65°
tresset_1 [31]

Answer:

D. 65°

Step-by-step explanation:

it's a isosceles triangle so the angles of same length sides has same measure.

8 0
3 years ago
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