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disa [49]
2 years ago
11

Can anyone help me answer this ?

Mathematics
1 answer:
AfilCa [17]2 years ago
7 0

It would be y=7/2x+5/7

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Estimate 856 + 457 by first rounding each number to the nearest hundred.
Lisa [10]

Answer:

865 = 900

457 = 500

900 + 500 = 1,400

856 + 457 = 1,313

5 0
2 years ago
Read 2 more answers
Simplify the polynomial 3x5-2x+4-x5+x2
MariettaO [177]

Answer:

-65 is answer if we will solve it then it will be answer

4 0
2 years ago
Which value of m will create a system of parallel lines with no solution? y=mx-6 8x-4y=12 A coordinate grid with one line labele
nydimaria [60]

Answer:

A system of parallel lines will be created where the two lines will never meet and have no common solution at a value of m = 2

Step-by-step explanation:

The equation of the given line is 8·x - 4·y = 12

Which gives;

8·x- 12= 4·y

y = 2·x - 3

Given that the line passes through the points (0, -3) and (1, -1), we have;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

When (x₁, y₁) = (0. -3) and (x₂, y₂) = (1, -1), we have;

Slope, \, m =\dfrac{(-1)-(-3)}{1-(0)} = 2

y - (-3) = 2×(x - 0)

y = 2·x - 3 which is the equation of the given line

For the lines 8·x - 4·y = 12, which is the sane as y = 2·x - 3 and the line y = m·x  - 6 to have no solution, the slope of the two lines should be equal that is m = 2

Given that the line passes through the point (1.5, 0), we have;

y - 0 = 2×(x - 1.5)  

y = 2·x - 3...................(1)

For the equation, y = m·x  - 6, when m = 2, we have;

y = 2·x  - 6..................(2)

Solving equations (1) and (2) gives;

2·x - 3 = 2·x  - 6, which gives;

2·x - 2·x=  - 3 - 6

0 = 9

Therefore, a system of parallel lines will be created where the two lines will never meet and have no common solution at a value of m = 2.

4 0
3 years ago
The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 250.8 and a standard deviation of
Iteru [2.4K]

Answer:

a) 68%; b) 99.5%

Step-by-step explanation:

The empirical rule states that 68% of data falls within 1 standard deviation of the mean; 95% of data falls within 2 standard deviations of the mean; and 99.7% of data falls within 3 standard deviations of the mean.

For part a,

We are asked the approximate percentage of women whose platelet counts are within 1 standard deviation of the mean.  According to the empirical rule, this is 68%.

For part b,

We are given the endpoints of the interval.  The lower endpoint is 181.5; this is 250.8-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

This is 2 standard deviations away from the mean.

The higher endpoint is 320.1; this is 320.1-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

This is standard deviations away from the mean.

This means this interval includes about 95% of women.

4 0
3 years ago
Which of the following relationships does NOT represent y as a function of x ?
KonstantinChe [14]

Step-by-step explanation:

A constant regarding force of 10 Newton is exerted to a body of mass 20 kg moving initially with a speed of 10 meter per second how long does the body take to stop

7 0
3 years ago
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