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Tanya [424]
3 years ago
15

I'll give brainliest ​

Mathematics
1 answer:
ohaa [14]3 years ago
8 0

Answer:

Max height = 21 feet

Yes -  can reach the ledge

Step-by-step explanation:

For quadratics of the form

y = ax² + bx + c

The x coordinate of the vertex is at

x = -b/2a

therefor

t = (-32) / (2 * -16)

t = 1

h(1) = -16(1²) + 32(1) + 5

h(1) = 21

Max height = 21 feet

21 > 20

Yes -  can reach the ledge

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Answer:  $0.55

Step-by-step explanation: you would divide 4.40 by 8 to get the answer which is 0.55

Hope this helps :)

3 0
3 years ago
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Compare -4 ____ -12 9 ___ -35
omeli [17]
-4 < -12 and 9 > -35

Hope this helps!
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3 years ago
B is the midpoint of ac. Ab = x+9 and bc = 3x-7 find x and ac
natali 33 [55]

To solve this problem, we need to know 2 relationships:

<h2>1. AC = AB + BC</h2>

The distance of AC is the sum of AB and BC.

AC = AB + BC

We know this since the distance of going from A to C (AC) is the same as going from A to B (AB), then B to C (BC).

<h2>2. AB = BC</h2>

The distance of AB is the same as AC.

AB = BC

We know this since B is in the middle of AC, so the distance from B to A (BA) is the same as the distance from B to C (BC).

You can see the attached image (at the bottom) for a visualization of this.

<h2>Putting them together</h2>

Since we know the values of AB and BC...

AB = x+9\\BC = 3x-7

...we can put these values into our 2nd equation and solve for x:

AB = BC\\x + 9 = 3x -7

Add 7 to both sides:

x + 16 = 3x

Subtract x from both sides:

16 = 2x

Divide both sides by 2:

8 = x\\x = 8

Knowing x, we can find the distance of AC using our first equation.

AC = AB + BC

Let's put in the values of AB and BC:

AC = (x+9) + (3x-7)

Before we put in x = 8, we can simplify this:

AC = (x+9) + (3x-7)\\AC = x + 9 + 3x -7\\AC = x + 3x + 9 -7\\AC = 4x + 9 - 7\\AC = 4x+2

We group x and 3x and add those together. Then we subtract 7 from 9.

With this equation, we can put in x = 8:

AC = 4x +2\\AC = 4*8 + 2

Since 4 * 8 = 32:

AC = 4 * 8 + 2\\AC = 32 + 2\\AC = 34

Finally, we have found both x and AC.

<h2>Answer</h2>

x = 8

AC = 34

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