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klasskru [66]
3 years ago
15

Please help I’m terrible at math scale factors

Mathematics
2 answers:
zysi [14]3 years ago
6 0
First one is false, second one is true.
pochemuha3 years ago
4 0

Answer:

2.5

Step-by-step explanation:

Calculate the scale factor as the ratio of corresponding sides of the image to the original.

here image is 5 and original is 2

scale factor = \frac{5}{2} = 2.5

scale factor of 0.4 is False

scale factor of 2.5 is True

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aksik [14]

Answer:

the answer is the first one I think but I'm pretty sure

6 0
3 years ago
Ben made a model (shown below) of the square pyramid he plans to build when he grows up.
elena-s [515]

Answer:

336 m^2

Step-by-step explanation:

The surface area of a square pyramid is the sum of the area of the squared base + 4 times the area of each triangular face, therefore:

A=A_b + 4A_t

where:

A_b=L^2 is the area of the base, where

L is the length of the base

A_t=\frac{1}{2}Lh is the area of each triangular face, where

h is the height of the face

Substituting,

A=L^2+2Lh

For the model in this problem,

L = 12

h = 8

Therefore, the surface area here is:

A=12^2 +2(12)(8)=336

4 0
3 years ago
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A local pet store was giving away 3 guppies for each 2 gold fish that were sold. Based on this information, how many gold fish d
frozen [14]
Jessie bought 14 goldfishes

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3 years ago
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A large mixing tank currently contains 225 225 gallons of water, into which 5 5 pounds of sugar have been mixed. A tap will open
kkurt [141]

Answer: Hello mate!

you put every number twice, I will consider that in this problem we have:

225 gallons of water initial with 5 pounds of sugar. then each minute you add 20 gallons of water and 4 pounds of sugar.

the concentration is defined as pounds of sugar divided by the gallons of water. The gallons of water are 225 initially and 20 per minute, this is written as 225 + 20tt, where t is the minutes. The pounds of sugar is 5 + 4 per minute, then this can be written as 5 + 4t

C(t) = \frac{5 + 4t}{225 + 20t}

this is the equation that describes the concentration in pounder per gallon after t minutes.

4 0
3 years ago
When are brackets used in a expression?
Pani-rosa [81]

When brackets are used in a expression its most likely there and there's parenthesis inside of the brackets. Hope this helps. :|

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4 years ago
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