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tekilochka [14]
2 years ago
9

I need help what's the answer ​

Mathematics
1 answer:
Lady bird [3.3K]2 years ago
4 0

Answer:

y = 2x - 5

Step-by-step explanation:

slope-intercept form is y = mx + b with m being the slope of the line and b being the y-intercept (where the line touches the y-axis)

First we can find m using the formula for slope, \frac{rise}{run} (or \frac{y_1 - y_2}{x_1 - x_2}), which is the change in y over the change in x.

We can use any points on the line, but I am going to use (4, 3) and (3, 1) for this example. We can now find the slope.

\frac{3-1}{4-3} = \frac{2}{1}

This means your slope is 2, which means m is 2.

Finding the y-intercept is easy. This line crosses the y-axis at -5, and so b is -5.

Now we can plug in the values into our original equation to get the equation of the line.

y = 2x - 5

That is the answer

- Kan Academy Advance

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Valeria has been training for the Charlestown cruisers bike race. The first week she trained, she rode 5 days and took the same
ira [324]

The number of miles covered every evening obtujwd using a <em>system of equation</em> is 15 miles.

<u>Let the number of miles per evening</u> = m

  • Number of days = 5

  • Number of miles per morning = 8 miles

  • Total miles covered = 115 miles

<u>Using the expression below :</u>

<em>Number of days(miles per morning + miles per evening) = 115 miles </em>

5(8 + m) = 115

40 + 5m = 115

5m = 115 - 40

5m = 75

m = 75 / 5

m = 15 miles

Therefore, the Number of miles covered per evening is 15 miles.

Learn more : brainly.com/question/18796573

8 0
3 years ago
Expressions equivelant to 64^x
Lana71 [14]

64^{\text{x}} = (8^2)^{\text{x}} = 8^{2\text{x}}

The rule used is that (a^b)^c = a^{bc} we multiply the exponents b and c.

Or we could say this

64^{\text{x}} = (4^3)^{\text{x}} = 4^{3\text{x}}

Or,

64^{\text{x}} = (2^6)^{\text{x}} = 2^{6\text{x}}

Therefore, we have multiple possible answers.

4 0
2 years ago
Label if it is binomial or monomial or trinomial
zvonat [6]

Answer:

Binomial

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6 0
3 years ago
Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc
Bingel [31]

Answer:

We need a sample size of at least 719

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.

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when M = 0.3, \sigma = 4.103. So

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

0.3 = 1.96*\frac{4.103}{\sqrt{n}}

0.3\sqrt{n} = 1.96*4.103

\sqrt{n} = \frac{1.96*4.103}{0.3}

(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}

n = 718.57

Rouding up

We need a sample size of at least 719

6 0
3 years ago
Lyndsey must respresent the following equation in the number line (-3)+(+4)=
likoan [24]
Think of it like this
-3 means move 3 spaces back (or left)
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so, from 0, move 3 spaces left
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7 0
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