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aliina [53]
3 years ago
7

PLS PLS PLS I NEED HELP WITH ONLY 3C I HAVE DONE THIS QUESTION TWICE BUT I KEEP GETTING THE WRONG ANSWER PLS PLS HELP ME

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0
Tan(35)=ck/cd
0.7= ck/3
ck=2.1

Tan(65)=cj/cd
2.1=cj/3
cj=6.3

jk=6.3-2.1=4.2
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A baseball is hit into the​ air, and its height h in feet after t seconds is given by h(t)= -16t^2+128t+2. The height of the bas
tankabanditka [31]

Answer:

\large \boxed{\sf \ \text{2 feet, 4 seconds, 258 feet } \ }

Step-by-step explanation:

Hello,

To know the height of the baseball when it is hit we have to compute h(0), as t = 0 is when the baseball is hit into the air.

h(0)=-16\cdot 0^2+128 \cdot 0+2=2

So, the answer is <u>2 feet.</u>

<u />

h(x) is a parabola which can be written as ax^2+bx+c, it means that the vertex is the point (-b/2a,h(-b/2a)).

The baseball reached its maximum height after

   \dfrac{-b}{2a}=\dfrac{-128}{-2*16}=\boxed{4 \text{  seconds}}

And the maximum height of the baseball is h(4).

h(0)=-16\cdot 4^2+128 \cdot 4+2=-256+512+2=\boxed{258 \ \text{feet}}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0
3 years ago
PLEASE HELP 0ffering MAX POINTS
Mkey [24]

Answer:

Priya is correct

Step-by-step explanation:

Priya is right because of the plus sign. When its adding you should always subtract from both sides but when you have the subtraction side you have to add to both sides.

7 0
2 years ago
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xz_007 [3.2K]

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9514 1404 393

Answer:

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Step-by-step explanation:

The first term of this arithmetic sequence is -10. The common difference is -8-(-10) = 2. The n-th term is ...

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  an = -10 +2(n -1) = 2n -12

Then the 77th term is ...

  a77 = 2(77) -12 = 154 -12

  a77 = 142

The 77th term is 142.

4 0
2 years ago
Decide whether the pair of lines is parallel, perpendicular, or neither. 3x-6y=2 and 18x+9y=8
Ray Of Light [21]

Answer: perpendicular

Step-by-step explanation:

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