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Bess [88]
3 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]3 years ago
3 0

Total Cost C = 10*150 + 20*50

=  2500   pence

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True or false: the lateral surface of cone a is exactly 1/2 the lateral surface area of cylinder b
Mazyrski [523]

Answer:

True

Step-by-step explanation:

We have that,

The cone A has the length of the lateral side = h and the height of the cylinder  B = h.

Since, the lateral surface areas are given by,

Lateral surface area of cone = \pi r\times l, where l is the length of the lateral side.

So, we get L_{A} = \pi r\times h.

Also, Lateral surface area of cylinder is 2\pi r\times h, where h is the height of the cylinder.

So, we get L_{B} = 2\pi r\times h

Thus, we see that, L_{A}=\frac{1}{2}\times L_{B}

Hence, the given statement is correct.

6 0
3 years ago
Please answer as soon as possible!!
harkovskaia [24]

Answer:

2.29

Step-by-step explanation:

First determine the square root of 17.8

√17.8 = 4.22

second, determine the value of 1.3^{2.5} = 1.93

subtract 1.93 from 4.22

4.22 - 1.93 = 2.29

6 0
3 years ago
Which of the following functions is graphed below?
svetoff [14.1K]
<h3>Answer:</h3>

C (see attached)

<h3>Step-by-step explanation:</h3>

The linear portion of the graph is defined for x ≥ 1, with the point x=1 included. Only selections A and C do that.

The quadratic portion of the graph is defined for x < 1. Only selection C does that. (Selection A is doubly-defined for x > 1, so is not a function. It is undefined for x < 1.)

5 0
3 years ago
A farmer has 5 times as many cows as horses.
Assoli18 [71]

Answer:

The correct answer is !40 cows and 28 Horses

Step-by-step explanation:

h+5h=168

6h=168

h=168/6

h=28 horses.

5*28=140 cows.

Proof:

28=140=168

168=168

7 0
3 years ago
Can someone help with these two PLZ.
Alexandra [31]

Answer:

5. 76

6. 24

Step-by-step explanation:

5.

x + x = 152

2x = 152

x = 76

6.

2x + 3x = 120

5x = 120

x = 24

7 0
3 years ago
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