MATHEMATICS MIDDLE SCHOOL

A ball is thrown upward and its height after t seconds can be described by formula f(t)=−10t2+24t+5.6. Find the maximum height the ball will reach.

Answers

Answer 1
Answer:

Answer:

The maximum height is 20.

Step-by-step explanation:

The height of the ball is given by f(t)= -10t^(2) +24t+5.6.

Differentiating the above equation, with respect to t, we get (d f(t))/(dt) = -20t + 24.

At the maximum height the derivative of the function needs to be 0.

Hence, (d f(t))/(dt) = 0 gives t = (24)/(20) = (6)/(5).

The maximum height is f((6)/(5) )= -10((6)/(5) )^(2) +24((6)/(5) )+5.6 = 20

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Use parentheses to make each number sentence true 1+2×3+4=21​

Answers

(1+2)(3+4)
1+2=3
3+4=7
7•3=21
There is an invisible multiplication sign between the two parentheses :).

Explain how you could add 678 + 303 using mental math

Answers

678 + 303 = 981

Here are a few examples to get you started:
600 + 300 = 900 
78 + 3 = 81 
900 + 81 = 981
Here's another one:
678 = 600 + 70 + 8 
303 = 300 + 00 + 3 
Add the ones place = 11 
Add the tens place = 70 
Add the hundreds place = 900 
Now add 900 + 70 + 11 = 981
Hope this helps! :-)

How do you write thirty six thousands in standard form?

Answers

Thirty-six thousandths (0.036) in standard form is 3.6 x 10-2
i'm not for sure what it is though,this is what i know,36,000 in standared form is 3x10,000+6x1,000=36,000.

mr. and mrs. baker place 12- inch rulers along the length of a rug . they each line up 3 rulers along the edge of the rug . what is the length of the rug

Answers

36 inches, 3 feet, or 1 yard (they are all the same)
each ruler is 12 inches so 12 times 3 is 36

How many 1/5-cup servings are in 3/4 of a cup of ice cream?

Answers


so this is division

(3)/(4) ÷ (1)/(5) = 3.75

you cant serve 3.75 cup of ice cream so 3

Paulina works out with a 2.5-kilogram mass. what is the mass of 2.5-kilogram mass in grams?

Answers

Kilo means thousand, so if you have 1 kilogram that means you have 1000 grams.


Paulina has a 2.5 kilogram mass, 2 kilograms is 2000 grams.

0.5 means half and to get a half out of anything you have to divide it by 2.
1000 divide by 2 is 500.

Your answer is 2500.
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