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Karolina [17]
3 years ago
11

The graph shows the calling charges of two cell phone companies. At how many minutes do the two companies charge the same amount

?
Α. Ο
B. 15
C. 20
D 4

Mathematics
2 answers:
Vinvika [58]3 years ago
5 0

Answer: The answer would be C

Step-by-step explanation:

The two lines intersect on (20, 6) so that means that the charging rates were the same when on that point. And since it is asking for how many minutes they charge at the same amount, that would make it 20.

Nitella [24]3 years ago
4 0
I believe that would be C.
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Adam is 159 centimeters tall and casts a shadow 105 centimeters in height. If Cara is 140 centimeters tall, how many centimeters
vodomira [7]

Answer:

The answer to your question is 12.55 cm

Step-by-step explanation:

Data

Adam                                  Cara

height = 159 cm                  height = 140 cm

shadow = 105 cm                shadow = x

Process

1.- To solve this problem use the Thales' theorem

         Cara's shadow / Cara's height = Adam's shadow / Adam's height

- Substitution

                                     x / 140 = 105 / 159

-Solve for x

                                     x = 105 (140) / 159

-Simplification

                                     x = 14700 / 159

                                     x = 92.45 cm

Cara's shadow is 92.45 cm long.

2.- If both shadows are in line, then Cara must walk forward

                105 - 92.45 cm

                12.55 cm

             

4 0
2 years ago
What is the surface area of the cube below ?
dusya [7]

Answer:

B

Step-by-step explanation:

Since a cube has 6 sides, the surface area of a cube is 6 times the area of one of the sides. Therefore:

SA=6\cdot 9^2=6\cdot 81= 486\text{ units}^2

Hope this helps!

6 0
3 years ago
Read 2 more answers
A right triangle has a hypotenuse of 25 feet and a leg of 7 feet. Which of these is the length of the other leg?
neonofarm [45]
25^2=7^2 + x^2
49 + x^2 = 625
x^2= 576
square both sides
x=24
5 0
2 years ago
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A 12 foot board is cut so that one piece is 5 times as long as the other. Find the length of each piece.
sveta [45]

Answer:

2 and 10

Step-by-step explanation:

Let x be length of the small piece and y the length of the big one.

● y = 5x

Since the big piece is 5 times longer than the short one.

The total length is 12 ft

● y + x = 12

● 5x + x = 12

● 6x = 12

Divide both sides by 6

● 6x/6 = 12/6

● x = 2

So the length of the two pieces are 2 ft and 10 ft (5×2)

4 0
3 years ago
A percent is a ratio of the ________ to the _______.
riadik2000 [5.3K]

Answer:

A percent is a ratio of the parts to the whole

Step-by-step explanation:

If you had 30/100, 30% as a percentage, 30 would be the parts and 100 would be the whole

7 0
2 years ago
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