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Alina [70]
3 years ago
12

_

Mathematics
1 answer:
QveST [7]3 years ago
6 0

Answer:

Step-by-step explanation:

Let x represent the number of calls made with plan 1 in a month.

Let y represent the number of calls made with plan 2 in a month.

Plan 1 charges $25 per month for unlimited calls. This means that the total cost of x calls made with plan 1 in a month would be $25

Plan 2 charges $15 per month plus $0.04 per call. This means that the total cost of x calls made with plan 1 in a month would be

15 + 0.04x

a) for the number of calls for which Plan 1 is more economical than Plan B, it becomes

25 < 15 + 0.04x

25 - 15 < 0.04x

10 < 0.04x

0.04x > 10

x > 10/0.04

x > 250

b) plan 1 would be more economical when the calls per month exceed 250.

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I really need someone to explain to me on how to solve these!! :(
HACTEHA [7]

Answer:

3.7%

Step-by-step explanation:

(p)principal=$3400

(t)time=9months=9÷12year=3÷4year

(i)interest=$94.50

(r)rate=?

we have

r%=i/(pt)

r%=94.50÷(3400×3÷4)

r÷100=94.50÷2550

r=0.37×100

r=3.7

required rate is 3/7%

5 0
3 years ago
A smoothie recipe called for 3/4 cups of apples, 1/8 cups of mangoes as well as 2/3 cups of bananas. In total how many cups of f
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Answer:

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Step-by-step explanation:

7 0
3 years ago
What is the difference between stem and leaf plot and dot plot?
antiseptic1488 [7]

Stem-and-Leaf-plot represents data by separating each value into two parts. Dot plot uses a graph in which each data value is plotted as a point along a horizontal scale of values. The difference is Dot Plots use graphs to organize data and Stem-and-Leaf plot separates the data into two parts

6 0
3 years ago
This set of points is on the graph of a function.
mars1129 [50]

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<u>Step-by-step explanation:</u>

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6 0
3 years ago
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-Dominant- [34]
To find the value of x we first need to find the missing angle in the triangle.

To do that we are gonna add the angles we already have.

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Angles in a triangle measures 180 so to get the missing angle we are gonna subtract 109 from 180

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180 - 71 = 109 degrees

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6 0
3 years ago
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