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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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Find the area. Round to the nearest tenth.<br>6 in.<br>5 in.<br>9 in.<br>in.<br>​
ycow [4]

Answer:

131 1/4 in.²

Step-by-step explanation:

To find the area of the figure, you would have to divide the figure into two parts.  The figure can be divided into two rectangles.

<u>Rectangle 1</u>

The length is 11 3/4 in.  The width is 6 in.

A = lw

A = (11 3/4 in.)(6 in.)

A = 70 1/2 in.²

<u>Rectangle 2</u>

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A = (9 in.)(6 3/4 in.)

A = 60 3/4 in.²

Add the two areas together.

70 1/2 in.²  +  60 3/4 in.²  =  131 1/4 in.²

7 0
4 years ago
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Vera_Pavlovna [14]
I am not quite sure but I hope it helps!

6 0
3 years ago
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The mean of a particular set of 7 numbers is 4. Six of the numbers in the set are known: 1,2,2,5,7,and 8.
Setler [38]
\dfrac{1+2+2+5+7+8+x}{7}=4\\&#10;\dfrac{25+x}{7}=4\\&#10;25+x=28\\&#10;\boxed{x=3}&#10;
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An umbrella sprinkler is positioned on a ceiling at a point whose x- coordinate is 0. Negative values of a indicate distances, i
vodka [1.7K]

Answer:

-1/4x² + 3

Step-by-step explanation:

Given that:

Path of sprinkler is modeled by the quadratic function :

w(x) = -1/4(x^2 -12 )

w(x) = height of the water, in meters, at position x

The height of ceiling as a constant or Coefficient = w(x)

Expanding w(x)

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-1/4x² + 3

The height of ceiling is -1/4x² + 3

8 0
3 years ago
The weights of a large number of miniature poodles are approximately normally distributed with a mean of 8 kilograms and a stand
harina [27]

Answer and Step-by-step explanation:

Considering the table attached.

(a) over 9.5 kg;

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σ = 0.9

z = 9.5 - 8/0.9 ≈ 1.67

P (Z > 1.67) = 0.5 - P(0<Z<1.67) = 0.5 - 0.4525 = 0.0475

(b) at most 8.6 kg;

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(c) between 7.3 and 9.1 kg.

z₁ = 7.3-8/0.9 ≈ -0.78

z₂ = 9.1 - 8/0.9 ≈ 1.22

P(-0.78 < Z < 1.22) = P(0 < Z < 0.78) + P(0 < Z < 1.22) = 0.2823 + 0.3888 = 0.6711

3 0
3 years ago
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