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igomit [66]
3 years ago
10

Marcy spent 8 minutes on the phone while routing 4 phone calls. In all, how many phone calls does Marcy have to route to spend a

total of 20 minutes on the phone? Assume the relationship is directly proportional.
Mathematics
2 answers:
joja [24]3 years ago
5 0

Answer: Marcy will need to route 10 calls to spend a total of 20 mintes on the phone.

Step-by-step explanation: 1 call = 2 minutes.

lyudmila [28]3 years ago
4 0
10 phone calls answered in 20 minutes
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lina2011 [118]

Answer:

0.72secs

Step-by-step explanation:

Given the height of the ball in air modeled by the equation:

h=−16t²+23t+4

Required

Total time it spent in the air

To get this we need to calculate its time at the maximum height

At the maximum height,

v = dh/dt = 0

-32t + 23 = 0

-32t = -23

t = 23/32

t = 0.72secs

<em>Hence the total time it spend in the air will be 0.72secs</em>

8 0
3 years ago
Drive 1,800 mi in 30 h
ella [17]
<span>1800 mi / 30 hr = 60 mi/hr


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3 years ago
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rosijanka [135]
Slope is\text{m}=\frac{y_1-y_2}{x_1-x_2}=\cfrac{10-2}{1-(-3)}
Then you use the equation
\text{y=mx+b}
Where b is the y-intercept. To find it, plug in x and y from one of the points. Say, point 1 (1,10):
10=m(1)+b
You know m (from above) and now you can solve for b.

Rearrange terms:
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And that will be the answer.

Make sense?
4 0
3 years ago
Read 2 more answers
Can u help me with these math problems
Vlada [557]

Answer:

Q3: A

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Step-by-step explanation:

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lora16 [44]

Answer: Assuming the a2 is a with an exponent of 2 and a3 is a with an exponent of 3, the answer is 2a^6-2a^5

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