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3 years ago

Eight pens cost $9.20. what is the unit price? __ per pen?

Mathematics

1 answer:

juin [17]3 years ago

8 0

Unit price is the price for 1.

9.20/8 = 1.15

Unit price = $1.15

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Reciprocals in mix fraction form

jok3333 [9.3K]

Answer: improper fractions

Step-by-step explanation:

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3 years ago

I need some help with math.<br> Who can help me?

Evgesh-ka [11]

Step-by-step explanation:

10^2 = 100

10^-2 = 1/100 ➡ 0.01

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3 years ago

Tom throws a ball into the air. The ball travels on a parabolic path represented by the equation , where represents the height o

tigry1 [53]

Answer:

2.5 second

Step-by-step explanation:

The equation is missing in the question.

The equation is, $h=-8t^2+40t$ , where 'h' is the height and 't' is time measured in second.

Now we know to reach its maximum height, h in t seconds, the derivative of h with respect to time t is given by :

$\frac{dh}{dt} =0$

Now the differentiating the equation with respect to time t, we get

$\frac{dh}{dt}=\frac{d}{dt}(-8t^2+40t)$

$\frac{dh}{dt}=-16t+40$

For maximum height, $\frac{dh}{dt} =0$

So, $-16t+40=0$

$\Rightarrow 16t=40$

$\Rightarrow t=\frac{40}{16}$

$\Rightarrrow t = 2.5$

Therefore, the ball takes 2.5 seconds time to reach the maximum height.

7 0

3 years ago

Which of the following statements are true about the graph? Check all that apply.

Alenkasestr [34]

Answer:

the graph has a minimum

Step-by-step explanation:

the minimum is -9

4 0

2 years ago

Read 2 more answers

The formula for finding the area of a triangle is A = 1/2bh. A triangle has height 12 in. and area 54in^2. What is the length of

KatRina [158]

Answer:

9in

Step-by-step explanation:

54 = 1/2(12*x)

54 = 6*x

x = 9

Check

12 x 9 = 108

108/2 = 54

8 0

2 years ago