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2 years ago

Solve the system by graphing. What is the solution of y=-x+4 and y=3/5x+4

Mathematics

1 answer:

dlinn [17]2 years ago

3 0

Answer:

x=0 and y=4 thats where the points meet

Step-by-step explanation:

solution of x and y:

both equations equal to y so you can put them together

3/5x+4=-x+4

separate the variables and numbers...

1.6x=0

x=0

y=4

if ur using a graph, use the y intercept (0,4) for your first point

then, using y=-x+4, make -x a fraction -1/1

by using rise/run go down one unit from (0,4) since its negative 1

then one unit to the right from where you are

you should be able to connect the points for the first equation

find the second equation on your own now:)

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5. A study found that the average time it took a person to find their dream home was 5.9 months. If a sample of

solong [7]

Answer:

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96\frac{0.8}{\sqrt{36}} = 0.26$

The lower end of the interval is the sample mean subtracted by M. So it is 5.9 - 0.26 = 5.64 months

The upper end of the interval is the sample mean added to M. So it is 5.9 + 0.26 = 6.16 months.

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

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3 years ago

In the diagram below, If angle 53°,what is the angle of CD

wel

I need this answer too can someone please help us out with the right answer ?!

Explanation:

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3 years ago

Pleasee help me .Use each digits 2,3,7,8 to make numbers FROM 20,21,22 SO ON ALL THE WAY TO 50 FOR EXAMPLE 2+3+7+8=20

Ahat [919]

2,3,7,8=
1)3*7=21
2)2*8+7=32
3)7*3+8=29
4)7*3+2=23
5)7*8 divided by 2=28
6)8*3=24
7)2*3*8=48
Hopes This Helps :)

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3 years ago

Read 2 more answers

X/14=40/70 Solve the proportion for x.

vodomira [7]

Answer:

Step-by-step explanation:

$\frac{x}{14} = \frac{40}{70} \\ x = \frac{40}{70} \times 14 \\ x = \frac{40}{10} \times 2 \\ x = 4 \times 2 \\ x = 8$

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3 years ago

Which point is a solution to the inequality shown in this graph?<br> (3, 2)<br> (-3, -6)

grigory [225]

Answer:

how am I supposed to give an answer if I can't see the graph

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3 years ago