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Stolb23 [73]
3 years ago
15

A baseball is thrown upwards from a height of 5 feet with an initial speed of 64 feet per second, and its height h (in feet) fro

m the ground is given by h(t) = 5 + 64t – 16t2 where t is time in seconds. Using a graphing calculator, determine at what time the ball reaches its maximum height. 0 seconds 1 second 2 seconds 3 seconds
Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0

Answer:

C. <em><u>2sec</u></em>

....................

Bingel [31]3 years ago
3 0
Maximum can be determined by taking derivative and set it equal to zero. 

\frac{d}{dx}(5+64t-16t^2) = 64 - 32t&#10;&#10;64-32t=0&#10;&#10;32t=64&#10;&#10;t=2


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OLga [1]

Answer:

  • m∠J = 76°
  • m∠K = 65°

Step-by-step explanation:

The sum of angle measures is ...

  (7x +13)° +(83 -2x)° = 141°

  5x +96 = 141 . . . . . collect terms, divide by °

  5x = 45 . . . . . . . . . subtract 96

  x = 9 . . . . . . . . . . . divide by 5

  7x +13 = 7·9 +13 = 76 . . . . . find m∠J

  m∠J = 76°

  m∠K = 141° -76°

  m∠K = 65°

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3 years ago
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4 0
2 years ago
2 1/2 + (-1/3)<br> PLz, help me with this question.
dem82 [27]

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Step-by-step explanation:

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3 years ago
The running back for the Bulldogs football team carried the ball 5 times for a total loss of 11 1/4 yards. Find the average chan
Firdavs [7]

Answer:

\displaystyle 2\ \frac{1}{4}

Step-by-step explanation:

<u>Fractions</u>

They can be expressed as proper fractions, improper fractions or mixed numbers. Proper fractions are such that the numerator is less than the denominator, like 2/5, 7/11, -9/10. Improper fractions are those whose numerators are greater than the denominator, such as 5/3, 10/9, -21/8.  

Mixed numbers are expressions made of whole numbers and a proper fraction, like 4 3/5, 1 1/2, -5 4/9. Mixed numbers can be transformed to improper fractions and vice-versa.

The question requires us to find the average change in field position on each run of the running back for the Bulldogs football team which carried the ball 5 times for a total loss of 11 1/4 yards.

The number 11 1/4 is mixed, to express it as an improper fraction, we add the numbers like

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This improper fraction will now be divided by 5 to find the average of 5 runs:

\displaystyle \frac{\frac{45}{4}}{5}=\frac{9}{4}

We now need to separate the improper fraction to a mixed number, let's just divide 9 by 4 to get 2 as the quotient and 1 for the remainder, thus

\boxed{\displaystyle \frac{9}{4}=2\ \frac{1}{4}}

6 0
3 years ago
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Mariulka [41]

Answer:

D. 3y+1

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The coefficient is the number in front of the variable

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4 0
3 years ago
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