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Pavel [41]
3 years ago
7

Lucie is struggling with Geometry and is in need of a private tutor. She has two candidates in mind. The veteran tutor charges $

15 for the first session plus $60 per hour afterward. The new college graduate charges $45 for the first session plus $50 per hour afterward. How many hours must these two tutor in order to earn the same amount of money?
Mathematics
1 answer:
lapo4ka [179]3 years ago
5 0

Answer:

2.33 hours

Step-by-step explanation:

Given

Veteran Tutor

Charges = \$15 --- first session

Hourly\ Rate = \$60

College Graduate

Charges = \$45 --- first session

Hourly\ Rate = \$50

Required

Determine the number of hours they earn the same amount

Represent the hours with x

First, we need to calculate the total charges for the veteran tutor for x hours;

Total = 15 + 60x

Next, we need to calculate the total charges for the college graduate tutor for x hours;

Total = 45x + 50

For them to earn the same amount, we have:

15 + 60x = 45x + 50

Solving for x

60x - 45x = 50 - 15

15x = 35

Divide through by 15

x = \frac{35}{15}

x = 2.33\ hours

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A theatre has 50 seats on the front row. There are 4 additional seats in each following row.
alexandr402 [8]
\boxed { \boxed { T_n = a_1 + d(n - 1)}}

\text {Given that }a_1 = 50 \text { and } d = 4

T_n = 50 + 4(n - 1)

T_n = 50 + 4n - 4

T_n = 46 + 4n

\boxed { \boxed {T_n = 46 + 4n }}

When n = 20,
T_{20} = 46 + 4(20) = 126

\boxed { \boxed {\text{Answer: The 20th term is 126}}}
4 0
3 years ago
How to find the average<br> of 78, 79, 87, 88, 101, 120, 130
crimeas [40]

Answer:

Add the numbers together and divide by the number of numbers. (The sum of values divided by the number of values).

Step-by-step explanation:

8 0
3 years ago
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If a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y = 48t − 16t2. Find
dimaraw [331]
The formula for average velocity between two times t1 and t2 of the position function f(x) is (f(t2)-f(t1)) / (t2-t1)
Plugging the values in for the first time period we get (f(2.5)-f(2)) / (2.5-2)
=> (f(2.5)-f(2)) / 0.5
f(2) will be the same for all 4 time periods and is
48(2)-16(2)^2 = 32
Now we plugin the other values
f(2.5) = 48(2.5)-16(2.5)^2 = 20
f(2.1) = 48(2.1)-16(2.1)^2 = 30.25
etc.
f(2.05) = 31.16
f(2.01) = 31.8384
Now plug these values into the formula
(20-32)/0.5 = -24
(30.25-32)/0.1 = -17.5
etc.
= -16.8
= -16.16
Final answer:
2.5s => -24 ft/s
2.1s => -17.5 ft/s
2.05 => -16.8 ft/s
2.01 => -16.16 ft/s
Hope I helped :)
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3 years ago
How would I solve 3+x=9?
kotegsom [21]

Answer:

x=6

Step-by-step explanation:

3+x=9

-3    -3

x=6

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The function

2x^2-44x-150

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So, if Tanya caters 25 meals she breaks even, and starting with the 26th meal she will begin to profit.

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