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anzhelika [568]
3 years ago
7

(05.02)

Mathematics
1 answer:
Masja [62]3 years ago
7 0

Answer:

4th option

Step-by-step explanation:

From

- x - 2y = - 4 ( add x to both sides )

- 2y = x - 4 ( add 4 to both sides )

- 2y + 4 = x , so

Substitute x = - 2y + 4 into the second equation

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a senator wishes to estimate the proportion of united states voters who favor new road construction. what size sample should be
Nitella [24]

The  size of the sample should be obtained at 2401 in order to be 95% confident

Given that:

Margi of error, ME=0.02

Population proportion, p=0.50

To Find: The size of the sample that should be obtained in order to be 95% confident

Let the size of the sample be n

Using formula,

n=(p*(1-p))*(z(0.05/2)/ME)^{2} \\n=(0.5*(1-0.5))*(1.96/0.02)^{2} \\n=0.25*9604\\n=2401

Therefore, the size of the sample should be obtained at 2401 in order to be 95% confident

Learn more about Population proportion here brainly.com/question/15703406

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8 0
3 years ago
If 5n - 3 = 7n – 5, then n=<br><br> A -4<br><br> BO<br><br> o<br><br> D<br><br> 6
ch4aika [34]

Answer:

The value of n is 1

Step-by-step explanation:

Given the expression 5n-3= 7n-5

In other to solve for n we have to perform  a series of step wise operations as follows

collecting like terms we have

5n-7n= -5+3

-2n= -2\\

The negative signs will council out on both sides we have

2n= 2\\

Dividing  both sides by 2 we have

n= \frac{2}{2}

n=1

6 0
3 years ago
A wire is anchored on a 9-meter pole. One part is attached to the top of the pole and the other meters away from the base. Quest
Blababa [14]

9 meter

Step-by-step explanation:

attached to the top

5 0
3 years ago
What is 4 4/9 times 2 2/3
Nataly_w [17]
If you want to multiply 4 4/9 by 2 2/3, you can calculate this using the following steps:

4 4/9 * 2 2/3 = 40/9 * 8/3 = 320/27 = 11 23/27

The result is 11 23/27.
4 0
4 years ago
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A rectangular solid has sides of 4 cm, 6 cm, and 8 cm. What is its surface area?
gizmo_the_mogwai [7]
The surface are of a rectangular prism is:

A=2(xy+xz+yz), where x,y, and z are the dimensions of the prism, in this case:

A=2(4*6+4*8+6*8)

A=2(24+32+48)

A=2(104)

A=208 cm^2
8 0
3 years ago
Read 2 more answers
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