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3 years ago

Does anyone knows how to do this I don’t understand it.

Mathematics

2 answers:

I am Lyosha [343]3 years ago

8 0

The correct answer is c

Mila [183]3 years ago

4 0

Between the two, the difference in x is -1 and the difference in y is 3.
Y's difference is rise, and x's difference is run.
Divide rise over run to get the slope.
3 / -1 = -3
So the slope is -3, eliminating 2 and 4.
The y-intercept that fits the graph is 7, not -7.
That means the correct equation is C.
Hope this helps!

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Help me out please

saul85 [17]

The surface area of the geometric shape is B. 840 cm².

Step-by-step explanation:

Step 1:

The given figure is made up of three rectangles and two triangles.

The surface area of the geometric shape is given by summing the individual surface areas.

The geometric shape's surface area = The sum of the individual surface areas.

Step 2:

The surface area of the rectangles is the multiplication of its length and width.

The surface area of the rectangle with length z and width x $= (26)(10)= 260 cm^{2}$ .

The surface area of the rectangle with length y and width x $= (24)(10)= 240 cm^{2}$ .

The surface area of the rectangle with length x and width x $= (10)(10)= 100 cm^{2}$ .

Step 3:

The area of a triangle is half the product of its base length and height.

The surface area of a triangle with base y and height x $= \frac{1}{2} (24)(10) = 120 cm^{2}$ .

They are two similar triangles so their areas are equal

Step 4:

The geometric shape's surface area $= 160 + 240+100+120+120 = 840 cm^{2}$ .

So the surface area is option B. 840 cm².

5 0

3 years ago

Find the zeros of the quadratic function

pashok25 [27]

Answer: A and B I think

Step-by-step explanation:

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3 years ago

An airplane pilot is fertilizing a field. The height y in feet of the fertilizer t seconds after it is dropped is modeled by y(t

zheka24 [161]

Answer:

About 360.178 feet

Step-by-step explanation:

So we want the vertical distance between the fertilizer and the ground to be 0.

This going to be about the time the pilot has dropped it

So we first need to find when y is 0.

$0=-16t^2-3t+300$

We are going to use the quadratic formula to solve for t:

$a=-16$

$b=-3$

$c=300$

The quadratic formula is:

$t=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

$t=\frac{3 \pm \sqrt{(-3)^2-4(-16)(300)}}{2(-16)}$

$t=\frac{3 \pm \sqrt{9+19200}}{-32}$

$t=\frac{3 \pm \sqrt{19209}}{-32}$

$t=\frac{3+\sqrt{19209}}{-32} \text{ or } \frac{3-\sqrt{19209}}{-32}$

$t \approx -4.424891774 \text{ or } 4.237391774$

So the pilot has released it at about 4.237391774 seconds since the fertilizer has actually hit the ground at roughly this time.

So we want to know the horizontal distance at t=4.237391774:

$85t$

$85(4.237391774)$

$360.1783008$

360.178 feet

7 0

3 years ago

The difference of twice a number and 3 is -21 translated

Westkost [7]

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

7 0

4 years ago

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Can you help me <br> 3 – 7f = -25, f = ?

Mandarinka [93]

You’re answer is 4
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3 years ago

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