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Bess [88]
2 years ago
11

A mobile phone company uses the formula C = 10t + 20m to calculate the total cost of a bill. C is the total cost of the bill in

pence. t is the number of text messages. m is the number of minutes of call time. Calculate the total cost for 150 texts and 50 minutes of call time.
Mathematics
1 answer:
Irina-Kira [14]2 years ago
3 0

Total Cost C = 10*150 + 20*50

=  2500   pence

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Find the area with Heron's formula pls help !
KatRina [158]

Answer:

3320in²

Step-by-step explanation:

heron formula = √s(s-a)(s-b)(s-c)

 when s = (a+b+c)/2

s =  (16+35+25)/2 = 76/2 = 38

heron formula = √s(s-a)(s-b)(s-c)  =  √78(78-16)(78-35)(78-25) = √78(62)(43)(53) = √11021244 = 3319.82589905≈3319.8in²(nearest tenth)

8 0
3 years ago
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A large company made $6,439,583 last year. What is the value of the 9 in $6,439,583?
White raven [17]
The value of 9 is 9,000 (nine thousand)
5 0
3 years ago
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a country's population in 1990 was 134 million. in 2000 it was a 139 million. estimate the population in 2014 using the exponent
yuradex [85]
F=ir^t

139=134r^10

139/134=r^10

r=(139/134)^(1/10) then:

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f=134(139/134)^(2.4)

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Some will say that you have to use the exponential function, but it really gives you the same answer...even for continuous compounding :)...

A=Pe^(kt)

139=134e^(10k)

139/134=e^(10k)

ln(139/134)=10k

k=ln(139/134)/10 so

A=134e^(t*ln(139/134)/10)  when t=24

A=134e^(2.4*ln(139/134))

A≈146 million (to nearest million)

The only real reason or advantage to using A=Pe^(kt) is when you start getting into differential equations...
6 0
3 years ago
I need too know what is 8×25×23?
Anit [1.1K]
The answer to your question is 4600.
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Line segment ab has endpoints a(9, 3) and b(2, 6). find the coordinates of the point that divides the line segment directed from
Dominik [7]
When we are to divide the line segment such that the ratio is 1:2, there are actually 3 parts of the segment. First, we determine the distance between the coordinates and divide the distance by 3. Then, we add the quotient to the x-coordinate.

x-coordinate:    (2 - 9) / 3 = -7/3
y-coordinate:    (6 - 3 ) / 3 = 1

Adding them to the coordinates of a,
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Thus, the coordinates are (20/3, 4). 
7 0
3 years ago
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