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Sonja [21]
2 years ago
12

It costs a flat fee of $3.15 to make an international call plus $0.05 for every minute that you talk. if you were charged $5.10

for making an international call, for how many minutes did you talk?
Mathematics
1 answer:
DerKrebs [107]2 years ago
8 0
The equation would be 0.05x + 3.15 = 5.10
0.05x = 1.95 (subtraction)
x = 39 (division)
39 minutes
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Please help me! I am very confused
Sphinxa [80]

Answer:

1) 22.5  A

2) 112    B

3) 430   L

4) 576   P

5) 486   L

6) 624  S

Code is A B L P L S

Step-by-step explanation:

1) Area of a triangle = 1/2 * base * height = 1/2 *5*9 = 22.5

2) Area of a parallelogram = base x height = 14 x 8 = 112

3) Area of a rectangular prism = 2(length * width) + 2*(length + height) + 2 *(length *height)

= 2(15x7 + 15*5 + 7*5)

= 2(105 + 75 + 35)

= 2 * 215

= 430

4) Volume of a triangular prism = 1/2 * base * length * height

= 1/2 * 8 * 16 * 9

= 576

5) A cube has six surfaces. Each surface has an area of s x s where s is the length of each side. In this case, each side has area of 9x9 = 81. Total surface area = 6 x 81 = 486 and that is the paper required

6) The trailer is a rectangular prism so its volume = length x width x height = 13 6 x 8 = 624

Now you have to look at each value and see which letter it corresponds to. For example answer 1) is 22.5 which lies between 0-100 so it gets letter A, answer (2) is 112 which lies in the range 101-200 so it gets the letter B and so on

4 0
1 year ago
Find the missing side lengths. Leave your answer as radicals in simplest form.
timurjin [86]

Answer:

Solution given:

b=9 base side of isosceles triangle

a=\sqrt{9²+9²}=9\sqrt{2}

8 0
2 years ago
Read 2 more answers
Please show your work. The data modeled by the box plots represents the battery life of two different brand of batteries that Ji
Diano4ka-milaya [45]
(a) Brand X median  = 13
      Brand Y median = 16

Median is the center dot in the shaded box (in blue color). Look at the Time (h) axis for their values. For Brand X it is 13 whereas for the Brand Y it is 16

(b) If we compare their median values we can see that the difference is 3 hours (16-13 = 3). It means that the Brand Y battery will last longer compared to Brand X battery as Brand Y lasts for 16 hours whereas Brand X battery lasts for 13 hours. 
7 0
3 years ago
Y(1 - 2x) + xy²(I - 2x)²​
Ghella [55]
How do you want this solved?
5 0
2 years ago
Read 2 more answers
Martene got a small aquarium for her birthday. The aquarium is a right rectangular prism 18.5\,\text{cm}18.5cm18, point, 5, spac
MariettaO [177]

Answer:

14 cm.

Step-by-step explanation:

We have been given that an aquarium is a right rectangular prism 18.5 cm long and 15 cm wide. We are also told that Martene put 3885 cubic cm of water in the aquarium.

To find the depth or height of aquarium, we will use volume of rectangular prism formula.

\text{Volume of rectangular prism}=l*w*h, where,

l = Length of prism,

w = Width of prism,

h = Height of prism.

Upon substituting our given values in above formula we will get,

3885\text{ cm}^3=18.5\text{ cm}\times 15\text{ cm}\times h

3885\text{ cm}^3=277.5\text{ cm}^2\times h

\frac{3885\text{ cm}^3}{277.5\text{ cm}^2}=\frac{277.5\text{ cm}^2\times h}{277.5\text{ cm}^2}

14\text{ cm}=h

Therefore, the aquarium is 14 cm deep.

7 0
2 years ago
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