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Shtirlitz [24]
3 years ago
11

A baseball is thrown from the top of a building and falls to the ground below. The height of the baseball above the ground is ap

proximated by the relation h = -5t2 + 10t + 15, where h is the height above the ground in metres and t is the elapsed time in seconds. Determine the maximum height that is reached by the ball.
Mathematics
1 answer:
lidiya [134]3 years ago
5 0
Kstsskts stsxaeUzt. awyararka euaya
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(3x+1)^2-2(3x+1)(3x+5)^2+(3x+5)^2 ​
Savatey [412]

Answer:

soln,

write the question

=9x^2+1-6x-2×9x^2+25+9x^2+25

=9x^2+1-6x-18x^2+25+9x^2+25

=9x^2-18x^2+9x^2+1+25+25-6x

=51-6x

if(3x+1)^2 mean that (3x+1)has power of 2 and u don't have to use the formula this is the answer

Step-by-step explanation:

it's just BODMAS method

6 0
2 years ago
A building that is 100 ft tall casts a shadow that makes a 30 degree angle with the ground. Approximately how long, in feet, is
Pavlova-9 [17]
The answer is D) 173.21, just had this question.
7 0
3 years ago
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Can someone please help me out with these three questions please please please!!!!
krek1111 [17]

Answer: 4. A 5. C 6. D

Step-by-step explanation: that’s it!!!!!!!!!!

8 0
2 years ago
Y/3 + 8 = -2 solve for y<br> a. -30<br> b. -18<br> c. 18<br> d. 30
Rainbow [258]

Answer:

\large\boxed{a.\ -30}

Step-by-step explanation:

\dfrac{y}{3}+8=-2\qquad\text{subtract 8 from both sides}\\\\\dfrac{y}{3}+8-8=-2-8\\\\\dfrac{y}{3}=-10\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\dfrac{y}{3\!\!\!\!\diagup_1}=(3)(-10)\\\\y=-30

5 0
3 years ago
-x + 2 = x+4<br> help please!
Savatey [412]

Answer:

x=-2

Step-by-step explanation:

hope this helps

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3 years ago
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