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belka [17]
3 years ago
9

Did I do this right?

Mathematics
2 answers:
Arada [10]3 years ago
8 0

Answer:

yes you listed all of the answers correct.

Step-by-step explanation:


OlgaM077 [116]3 years ago
6 0
Yep! You did it correct :)
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Maria put trim around a banner that is the shape of a triangle. each side is 22 inches long. maria has 1/2 foot of trim left. wh
marissa [1.9K]
Since Maria is going to put a trim around a triangle-shaped banner with 22 inches long per side, this means that for the banner, it has a total length of 66 inches. 66 inches would be equal to 5.5 foot. This means that the total length of the trim from the start is 7 foot. Hope this helps.
6 0
3 years ago
2x-5y=3 4y-x=-3 solve by elimination
loris [4]

Answer:

x = -1 and y = -1

Step-by-step explanation:

to solve this equation we say

let

2x-5y=3.......................................... equation 1

4y-x=-3............................................equation 2

from equation 2

4y-x=-3............................................equation 2

4y + 3 = x

i.e

x = 4y + 3 .............................................  equation 3

put x = 4y + 3 in equation 1

2(4y +3) - 5y = 3

8y + 6 -5y = 3

3y +6 = 3

3y= 3-6

3y -3

divide both sides by the coefficient  of y  which is 3

3y/3 = -3/3

y = -1

put y = -1 into equation 3

x = 4y + 3 .............................................  equation 3

x = 4(-1) + 3

x = -4 + 3

x = -1

therefore the value of x = -1 and y = -1 respectively

4 0
3 years ago
poll finds that 54% of the 600 people polled favor the incumbent. Shortly after the poll is taken, it is disclosed that he had a
Paha777 [63]

Answer: A. z = -2.57

Step-by-step explanation:

Let p be the population proportion of people polled favor the incumbent.

As per given , we have

H_0: p=0.54\\\ H_a: p

Sample size : n= 1030

sample proportion :  \hat{p}=0.50

Test statistic for proportion : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.50-0.54}{\sqrt{\dfrac{0.54(1-0.54)}{1030}}}\\\\= \dfrac{-0.04}{\sqrt{\dfrac{0.2484}{1030}}}\\\\=\dfrac{-0.04}{0.015529488}\approx-2.57

Hence, the  test statistic is z = -2.57 .

Thus , the correct answer is A. z = -2.57 .

7 0
3 years ago
Ifj. 1. what is the value of i
melomori [17]

Answer:

<em>i</em>

Step-by-step explanation:

The square root of a negative number is identified as an imaginary number (<em>i </em>)

An imaginary number (i) with exponent 3 or any other exponent remains an imaginary number.

The answer is:

<em>i</em>

3 0
3 years ago
Can anyone help me please​
densk [106]
(8, 10)
(2, 5)
(-2, 9)
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3 years ago
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