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julsineya [31]
2 years ago
8

Carli has 90 apps on her phone. Braylen has half the amount of apps as Theiss. If Carli has three times the amount of apps as Th

eiss, how many apps does Braylen have?
Mathematics
2 answers:
Svetach [21]2 years ago
6 0
Braylen has 15 apps on his phone
Elenna [48]2 years ago
5 0

Answer:

Braylen has 15 apps on his phone

Step-by-step explanation:

Carli has 3 times the amount of apps that Theiss does

So we divided 90 by 3

90 ÷ 3 = 30

Now we divide 30 by 2 to find out how many apps Braylen has, since he has half the amount of apps that Theiss does

30 ÷ 2 = 15

So Braylen has 15 apps

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Answer:

0.25 feet per minute

Step-by-step explanation:

Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min. Since we are told that the shape formed is a cone, the rate of change of the volume of the cone.

\dfrac{dV}{dt}=20$ ft^3/min

\text{Volume of a cone}=\dfrac{1}{3}\pi r^2 h

Since base diameter = Height of the Cone

Radius of the Cone = h/2

Therefore,

\text{Volume of the cone}=\dfrac{\pi h}{3} (\dfrac{h}{2}) ^2 \\V=\dfrac{\pi h^3}{12}

\text{Rate of Change of the Volume}, \dfrac{dV}{dt}=\dfrac{3\pi h^2}{12}\dfrac{dh}{dt}

Therefore: \dfrac{3\pi h^2}{12}\dfrac{dh}{dt}=20

We want to determine how fast is the height of the pile is increasing when the pile is 10 feet high.

h=10$ feet$\\\\\dfrac{3\pi *10^2}{12}\dfrac{dh}{dt}=20\\25\pi \dfrac{dh}{dt}=20\\ \dfrac{dh}{dt}= \dfrac{20}{25\pi}\\ \dfrac{dh}{dt}=0.25$ feet per minute (to two decimal places.)

When the pile is 10 feet high, the height of the pile is increasing at a rate of 0.25 feet per minute

5 0
3 years ago
If a great white shark weighs 4126 pounds, rank the following scale weights from most accurate to least accurate. 4200.34 pounds
Llana [10]
4,120 pounds ← error = 6 lbs 
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<span>4,200.34 pounds ← error = 74.34 lbs </span>
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julia-pushkina [17]

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Step-by-step explanation:

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3 years ago
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1.  -2(3x+4)
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175%of 8 is what number
Andreas93 [3]
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3 years ago
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