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2 years ago

5

Please help me heres the question: Ms. Zanetti receives text messages throughout her work day from her daughter’s day care provi

der. The possible number of text messages that she receives in a given day and the probabilities are given in the table.PLEASE SEND ANSWER ASAP

1 answer:

Natali [406]2 years ago

3 0

Answer:

blahaha

Step-by-step explanation:

hahaha

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"If a ball is thrown into the air with a velocity of 44 ft/s, its height in feet t seconds later is given by y = 44t − 16t2. (a)

Nataly_w [17]

Answer:

i) -28 ft/s

ii) -21.6 ft/s

iii) -20.8 ft/s

iv) -20.16 ft/s

b) -20 ft/s

Step-by-step explanation:

if v represents vertical velocity then if the height y is

y = 44*t − 16*t²

and the instant velocity v is the derivative with respect to the time

v= dy/dt = 44*(1) - 16*(2*t) = 44- 32*t

while the average velocity is va= (y-y₀)/(t-t₀)

where t₀ = 2 and y₀=y(t₀) = 44*2 − 16*2² = 24

then

va= (y-y₀)/(t-t₀) = (44*t − 16*t² - 24)/(t-2)

for

i) t= 0.5s + 2 s= 2.5 s

va = (44* 2.5 − 16* 2.5 ² - 24)/( 2.5 -2) = -28 ft/s

ii) t= 0.1s + 2 s= 2.1 s

va = (44* 2.1 − 16* 2.1 ² - 24)/( 2.1 -2) = -21.6 ft/s

iii) t= 0.05 s + 2 s= 2.05 s

va = (44* 2.05 − 16* 2.05 ² - 24)/( 2.05 -2) = -20.8 ft/s

iv) t= 0.01s + 2 s= 2.01 s

va = (44* 2.01 − 16* 2.01 ² - 24)/( 2.01 -2) = -20.16 ft/s

b) the instantaneous velocity when t=2

v (t=2) = 44- 32*(2) = -20 ft/s

6 0

2 years ago

Keep answers as exact as possible (NOT IN TERMS OF PI). <br><br>

Andreyy89

Answer:

121.9

Step-by-step explanation:

I will use pi but not in the answer

use formula V=πr²h

(π)(3.5²)(5.5)

12.25 × 5.5=67.375 × π=211.6648...

1/2(4/3(π(3.5³))

4/3(42.875)=57.166...× π = 179.59438...

1/2(179.59438...) = 89.79719...

211.6648... - 89.79719... = 121.86761... ≈ 121.9

6 0

2 years ago

Find the distance between points k(-1,-3) and L(0,0) round to the nearest tenth

marshall27 [118]

The answer is 3.16 units.

6 0

2 years ago

Read 2 more answers

Why dont I have friends

solniwko [45]

I'm sorry that you feel as if you dont have friends maybe you need to either get out of your comfort zone or talk to people with similar interests as you

6 0

2 years ago

A sphere has a diameter of 24 units. What is its volume in cubic units?

NNADVOKAT [17]

Ummm... I explained the whole process earlier, and was mistakenly issued for plagiarism. Which really sucks, because it took forever to type and format all of those formulas and steps.
Here's the shortened version...
V= $4/3 \pi r^{3}$
d (diameter) = 2r
so 24/2 = 12
plug in...
You should get approx. 7234.56, and don't forget to label it appropriately, it should be units cubed.

4 0

2 years ago