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Fynjy0 [20]
4 years ago
14

1. which method would be the simplest way to solve the system ?

Mathematics
1 answer:
shepuryov [24]4 years ago
8 0
I would solve this by using elimination, because you have opposite coefficients, (7x and -7x)<span />
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Suppose a candidate for public office is favored by only 48% of the voters. if a sample survey randomly selects 2500 voters, the
Drupady [299]
Mean=0.48
standard deviation=0.01
thus using the z-score:
P(x>0.5) we shall have the following:
z=(0.5-0.48)/0.01=2
thus
P(x>0.5)
=1-P(x<0.5)
=1-P(z<2)
=1-0.9772
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7 0
3 years ago
The Empire State Building is just over 1,450 feet tall. In anticipation of visiting this landmark on your vacation, you create a
Sergio [31]

Answer:

365 and 1/2 blocks will be used

The scale fact is 0.25

Step-by-step explanation:

So . .

  • We create a ratio 1:2

This represents 1 block is equivalent to 2 feet

  • Simply 1450 ÷ 2 = 725

So . . There are 725 feet and because One block is equal to 2 feet you divide 725 ÷ 2 =  362.5 blocks will be used

To find the scale factor simply divide the deminsions of the new shape by old

  • 362.5 ÷ 1450 = .25
5 0
2 years ago
Some teachers compared how many years they have been teaching.
Alex_Xolod [135]

Answer:

6

Step-by-step explanation:

The range of a data set is the numbers covered by the data. This means that the range is the difference between the minimum and maximum. The minimum is the smallest point, 2, and the maximum is the largest point, 8. Therefore, since 8-2=6, 6 must be the range.

5 0
3 years ago
(100 points) Give a step by step explanation on how you solved this problem
Lina20 [59]
Use substitution
Given both y values, you know that they have to be equal

3x + 3 = x - 1
2x + 3 = -1
2x = -4, divide by 2
x = -2
Now plug x value into any of the equation to find y value
y = 3(-2) + 3
y = -6 + 3, y = -3

Solution: x = -2, y = -3
4 0
3 years ago
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kifflom [539]
504
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8 0
3 years ago
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