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m_a_m_a [10]
3 years ago
6

I need help with 9-81 ASAP PLS THIS IS MY HW

Mathematics
2 answers:
nalin [4]3 years ago
5 0
To start, we know that the equation we are trying to find is a straight line. It hits the x-axis at -3 and the y-axis at -1.
Thus, we know that the line passes through (0, -1) and (-3, 0).

We can now find the gradient using the gradient form: \frac{y_1 - y_2}{x_1 - x_2}

Thus, the gradient becomes: m = \frac{0 - (-1)}{-3 - 0}
m = -\frac{1}{3}

Since we have a point of interest and a gradient, we can use the point-gradient form of a straight line to find the equation of the straight line.
y - y_1 = m(x - x_1)

Use either the y-intercept or the x-intercept as your point.
y + 1 = -\frac{1}{3}(x - 0)
y + 1 = -\frac{1}{3}x

Thus, the equation becomes:
y = -\frac{1}{3}x - 1

Now, since the shaded region is below the line, we know that the inequality becomes:

y \leq -\frac{1}{3}x - 1

But, since it's dotted, we need to exclude the line itself.
Thus, the inequality becomes:
y < -\frac{1}{3}x - 1
Yuri [45]3 years ago
4 0
It is -72 lol. that's pretty basic you know
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The weights (to the nearest pound) of some boxes to be shipped are found to be:. Weight 65 68 69 70 71 72 90 95 frequency 1 2 5
Lena [83]
So the mean is 72.97

We need to subtract the mean from each value and square it.
(65-72.97)^2= 63.5209
(68-72.97)^2=24.7009
(69-72.97)^2=15.7609
(70-72.97)^2=8.8209
(71-72.97)^2= 3.8809
(72-72.97)^2=0.9409
(90-72.97)^2=290.0209
(95-72.97)^2=485.3209

Now we add up the new values ( also consider their frequency) and find their mean.
Add the values
63.5209+(2 •24.7009=49.4018)+(5•15.7609=78.8045)+(8•8.8209=70.5672)+(7•3.8809=27.1663)+(3•0.9409=2.8227)+(2•290.0209=580.0418)+(2•485.3209=970.6418)= 1,842.967
Divide by total numburs to find the mean
1,842.967/ 30=61.43223333

The standar deviation is the square root of the mean so is
Square root of 61.43223333=7.837871735
Round to the nearest tenth
Standard Deviation is 7.8



7 0
3 years ago
How to find n in 38n4​
Rus_ich [418]

Answer:

Step-by-step explanation:

imagine 38 n = lets say b

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5 0
2 years ago
14 m ≈ ? ft pls hurry
Arte-miy333 [17]

Answer:

45.9318

Step-by-step explanation:

4 0
2 years ago
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There are two cubes, one smaller than the other. The two cubes combined has a volume of 118.125in. Find the side length of each
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Step-by-step explanation:

let the big cube side be b

small cube side be s

s = 2/3 * b

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b^3 + 8/9 b^3= 118.125

17 b^3/8 = 118.125

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2 years ago
Nitrogen and oxygen are the most abundant gases in Earth’s atmosphere. A nitrogen molecule is 0.00000000003 meters larger than a
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= 3 × 10-11
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= 3e-11
(scientific e notation)

= 30 × 10-^12
(engineering notation)
(trillionth; prefix pico- (p))

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4 0
3 years ago
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