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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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Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
3 years ago
Alex has a pet snake that eats 1 mouse every week. How many mice will the snake eat if Alex has the snake for 4 years?
Anvisha [2.4K]

Answer:

208.5714

Step-by-step explanation:

how many weeks are in 4 years

3 0
3 years ago
Read 2 more answers
Imagine you live in a big country. There are no forests in your country, but there are lots of farms and lots of food. The count
Fed [463]

Trading your food for the neighboring country's wood. You can control how much wood they cut down, slowing down the change of climate in your country, and can help them with their food shortage at the same time.

5 0
2 years ago
Read 2 more answers
Surface area of a pyramid
Ede4ka [16]

The general formula for the total surface area of a regular pyramid is T. S. A. =12pl+B where p represents the perimeter of the base, l the slant height and B the area of the base

To find the surface area of a regular triangular pyramid, we use the formula SA = A + (3/2)bh, where A = the area of the pyramid's base, b = the base of one of the faces, and h = height of one of the faces.

We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

To find surface area for a rectangular prism, use the formula SA = 2ab + 2bc + 2ac, where a is the width, b is the height, and c is the length. If you're trying to find the surface area of a triangular prism, use the formula SA = 2a + ph, where a is the area of the triangle, p is the perimeter, and h is the height

Hope that was helpful.Thank you!!!

7 0
4 years ago
How do i name the property that justifies this statment <br> ST=QR, then QR= ST
Keith_Richards [23]
Like this, (ST=QR) = (QR=ST)
6 0
3 years ago
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