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3 years ago

8) BRAINLIEST AND 15 POINTS! PLS HELP ASAP

Mathematics

1 answer:

algol133 years ago

4 0

Answer:

a.) Between 0.5 and 3 seconds.

Step-by-step explanation:

So I just went ahead and graphed this quadratic on Desmos so you could have an idea of what this looks like. A negative quadratic, and we're trying to find when the graph's y-values are greater than 26.

If you look at the graph, you can easily see that the quadratic crosses y = 26 at x-values 0.5 and 3. And, you can see that the quadratic's graph is actually above y = 26 between these two values, 0.5 and 3.

Because we know that the quadratic's graph models the projectile's motion, we can conclude that the projectile will also be above 26 feet between 0.5 and 3 seconds.

So, the answer is a.) between 0.5 and 3 seconds.

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Find the area of the rectangle. Round the answer to the nearest whole number.

Fed [463]

Answer:

The area of the given rectangle is 51

Step-by-step explanation:

First we have to find the coordinates of the vertices of the rectangle.

Then the length and breadth of it using distance formula.

The distance d between points (x₁ , y₁) and (x₂ , y₂) is given by

$d= \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$

Finally calculate the area of rectangle using the formula,

Area of rectangle = Length * Breadth

From the given graph, we get the coordinates of the rectangle as

A(2,4) , B(-2,3) , C(1,-9) , D(5,-8)

Breadth, AB = $\sqrt{(-2-2)^{2}+(3-4)^{2}} = \sqrt{16+1} = sqrt{17}$

Length, BC = $\sqrt{(1+2)^{2}+(-9-3)^{2}} = \sqrt{9+144} = 3 sqrt{17}$

Now, Area of rectangle = Length * Breadth = AB * BC = √17 * 3√17 = 3 *17 = 51

∴ The area of the given rectangle is 51

7 0

4 years ago

Read 2 more answers

PLEASE HELPPPPPP!!!!! WILL GIVE BRAINLIEST

REY [17]

Answer:

Since the leading coefficient is negative and the exponent is to a degree of 4...

The graph will be down on both ends.

8 0

3 years ago

Find the slope of the line that passes through the pair of points (4.5, 13.5) and (–3.5, –9).

Zigmanuir [339]

Given two points: (x₁,y₁) and (x₂,y₂) the slope "m" will be:
m=(y₁-y₂) / (x₁-x₂) or m=(y₂-y₁) / (x₂-x₁)

In this case:
(4.5 , 13.5)
(-3.5 , -9)

m=(-9-13.5) / (-3.5-4.5)=-22.5 / -8=2.8125

Answer: the slope will be m=2.8125.

3 0

3 years ago

Evaluate the expression when y = - 3.<br> - 7y2

yuradex [85]

So what you do for this one if you plug it in.
-7y2. So you have -7(-3)^2 which is -7(9) which is -63. So your answer is -63. Hope this helps!!!

4 0

3 years ago

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Evaluate the expression 9x, if x = 5.

meriva

The answer is 45

Explanation: if X=5 then we plug in x so now we get the equation 9 times 5 so the answer is 45 to check this we can divide 45 by 5 or 9 and we will see that the answer is correct have a nice day (: and a fortitude of a week

6 0

3 years ago

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