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2 years ago

9

2. A football is kicked in the air and its height, in metres, is given by the function h(t)=−4.9t^2+19.6t+1 , where t is measure

d in seconds.
a) determine the time it took to reach the maximum height

b) determine the maximum height of the ball

1 answer:

Rus_ich [418]2 years ago

3 0

Answer:

27

Step-by-step explanation:

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Help me pls, question is on the picture

Zinaida [17]

Answer:

I just learned this about a few weeks ago I hope this helps.

Step-by-step explanation:

Since it's cosine you're only looking at Adjacent and the hypotenuse which the adj is 20 and the hyp is 25 so since cosine is adj/hyp you do 20/25 then simplify it to 20/25 divide both by 5 so it's simplified to 4/5.

Then you do Cos-1(4/5)=36.869 which is rounded to the tenth 36.9 but rounded to the hundredth 36.87.

Hope this helps

6 0

2 years ago

I need an accurate answer please

kotykmax [81]

x = –6

Solution:

Given expression is $\sqrt[3]{x-2}+5=3$ .

Step 1: Isolate the radical by subtracting 5 from both sides of the equation.

$\Rightarrow\sqrt[3]{x-2}+5-5=3-5$

$\Rightarrow\sqrt[3]{x-2}=-2$

Step 2: Cube both sides of the equation to remove the cube root.

$\Rightarrow(\sqrt[3]{x-2})^3=(-2)^3$

Cube and cube root get canceled in left side of the equation.

$\Rightarrow\ x-2=-8$

Step 3: To solve for x.

Add 2 on both sides of the equation.

$\Rightarrow\ x-2+2=-8+2$

$\Rightarrow\ x=-6$

Hence the solution is x = –6.

6 0

3 years ago

-9x2 + 13x – 1=0<br><br> I need 3 answers, pls help me:)

kifflom [539]

The answer to this question is x = 13/9 = 1.444

5 0

3 years ago

Please help! This is really confusing.

ioda

39 meters in 3 minutes means 13 meters each minute and 26 meters in two minutes. Multiply by 1,000 to convert it into 26000 millimeters.

8 0

3 years ago

Read 2 more answers

5 times 3/4 in a mixed number

Arte-miy333 [17]

5 x 3/4 = 15/4

15/4 = 3 3/4

6 0

3 years ago