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Alina [70]
3 years ago
10

HELP !!

Mathematics
2 answers:
sertanlavr [38]3 years ago
8 0
X is an hour
15x=12x +18
max2010maxim [7]3 years ago
3 0
Since he makes 3 cookies more than her every hour, he needs to work for as many hours needed to make 18 more than her. 18/3 is 6 which is why he needs to work for 6 hours to get the amount equal to Sydney’s.
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Plz help plzzzzzzzzz
chubhunter [2.5K]

Answer:

47.13cm

Step-by-step explanation:

2×3.142×7.5cm

6 0
3 years ago
Read 2 more answers
If two pyramids are similar and the ratio between the lengths of their edges is
SVEN [57.7K]

Answer:

D. 27:1331

Step-by-step explanation:

The volume ratio for the two solids is the side length ratio raised to the third power.

3 to the 3rd power = 27

11 to the 3rd power = 1331

5 0
3 years ago
What is the area of this
larisa86 [58]
Area of a triangle is base x height divide by 2
26x9=234
234 divide by 2 is 117
5 0
3 years ago
One smartphone plan costs $52 per month for talk and messaging and $8 per gigabyte of data used each month. A second smartphone
nevsk [136]

Answer:

a) 6 gigabytes

b) $100

Step-by-step explanation:

Let c represent the total cost in dollars and d represent the amount of data used in gigabytes.

For the first smartphone

One smartphone plan costs $52 per month for talk and messaging and $8 per gigabyte of data used each month.

Equation =

c = 52 + 8d

For the Second smartphone

A second smartphone plan costs $82 per month for talk and messaging and $3 per gigabyte of data used each month.

Equation =>

c = 82 + 3d

How many gigabytes would have to be used for the plans to cost the same?

We would equate both cost to each other

52 + 8d = 82 + 3d

Collect like terms

8d - 3d = 82 - 52

5d = 30

d = 30/5

d = 6

Therefore,

a) The number of gigabytes for the cost of both Smartphone data plans to be the same = 6 gigabytes.

b) The cost of both plans if 6 gigabytes is used =>

c = 52 + 8d

c = 52 + 8 × 6

c = $100

3 0
3 years ago
A solution of isopropyl alcohol has a boiling point of 80 degrees Celsius. what is the boiling point of the solution in the degr
Olegator [25]
The answer would be D because in Fahrenheit it could be 176
5 0
3 years ago
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