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Leto [7]
3 years ago
8

A trebuchet launches a projectile from a hilltop 30 feet above ground level on a parabolic arc at a velocity of 40 feet per seco

nd. The equation h=−16t2+40t+30
models the projectile's h height at t seconds. How long will it take for the projectile to hit its target on the ground (to the nearest tenth of a second)?


2.8 seconds


3.1 seconds


3.5 seconds


3.9 seconds
Mathematics
1 answer:
LenKa [72]3 years ago
7 0
3.5 seconds!



hope this helps you out, and i’m sorry if i’m wrong!
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5+3w+3-w combine like terms to simplify
andreev551 [17]

Answer:

8 + 2w

Step-by-step explanation:

⇒ Change all signs to addition (subtraction is the same as adding a negative):

5 + 3w + 3 + -w

⇒ Since the expression is now all addition, you can rearrange them in any order. So group the terms together by their type:

5 + 3 + 3w + -w

⇒ Simplify:

8 + 2w

<u>Answer:</u> 8 + 2w

<em />

<em>Hope this helps!</em> :)

8 0
3 years ago
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The polygons in each pair are similar find the scale factor smaller figure to the larger
GrogVix [38]

Answer:

Smaller Figure 3

Larger Figure 5

Scale factor = 15/25 = 3/5

3 0
3 years ago
What are the following numbers writen as powers? 243
puteri [66]

Answer:

243=3^5

Step-by-step explanation:

We have to write 243 as a power of some number.

So, if we factorize 243 we get,

243 = 3 × 3 × 3 × 3 × 3

Therefore, we can write 243 as a power of 3.

No other number can be written in powers of 243 because it do not contain any other factor than 3.

Hence, 243 can be written as :

243=3^5

6 0
4 years ago
Determine if the two triangles are congruent.
stiks02 [169]

Answer:

SAS

Step-by-step explanation:

The two triangles share a side, so that would be reflexive to show that side is congruent. Also, keep in mind that all right angles are congruent! The picture already tells us that the two outer side are congruent. So in conclusion, the two angles are congruent by SAS.

Hope this helps! :)

3 0
3 years ago
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A ski rental store rents a pair of skis for $44 a day and a snowboard for $58 a day. Yesterday, the store made $2,232 on ski and
Katen [24]

First, let the number of skis rented by x and the number of snowboards rented by y. We can then assemble the first equation from the amount of money made from the rentals.


44x + 58y = 2232


The second equation can come from the fact that 9 more skis were rented than snowboards.


y = x - 9


Therefore our system is:


44x + 58y = 2232

y = x - 9

3 0
3 years ago
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