Need help with 2 math problems. Give 10 points out if helped?

Question

Need help with 2 math problems. Give 10 points out if helped?
1.What is the scale factor if a photograph 6" by 8" is enlarged to a painting that is 3 ft. by 4 ft.?
a.6
b.1/6
c.2

2.If each side has a scale factor of 1 in. to 2 ft., the actual perimeter is ___ and the actual area is ______.

a.32 ft,48 ft.2
b.32 ft,24 ft.2
c.48 ft,32 ft.2

Answer 1

If you can do your own math problems...how do you ever expect to pass the class?

Answer 2

Qn 1) you can do this by finding out the enlarged painting length in inches.
now 1 foot is 12 inches. so 3 ft by 4 ft is equivalent to:
(3 x 12) by (4 x 12) inches
which gives you 36 by 48 inches.

now compare ( 6 by 8) with (36 by 48), dividing either corresponding set,
(36 / 6) or (48 / 8)
will give you a scale factor of 6.

the photograph has been enlarged 6 times.

answer is (a). 6.

Qn 2) You need to provide more information for this especially if you are dealing with a square or rectangle. There can be no possible answer at this stage. Is that all the info the question has?

Hope this helps. :D

Answer 3

1. Taking the shorter side of the photograph, 6" is enlarged to 3ft (i.e. 36")

Scale factor = 36/6 = 6

You can counterscheck the answer by doing the same for the longer side.

Therefore, the correct answer is (a).


2. More information required.

Answer 4

1)
To find scale, compare the different measurements.

6" becomes 3 feet
8" becomes 4 feet

But, there are 12 inches in a foot, so:

3 [feet] * 12 [inches] / 1 [foot] = 36 inches
4 [feet] * 12 [inches] / 1 [foot] = 48 inches

So, it's actually:

6" becomes 36"
8" becomes 48"

Scale = 36"/6" or 48"/8"
= 6 or 6

Answer is "a"


2)
Question is incomplete...

Answer 5

for 1, how many times does 6" go into 3'? thats your scale factor

2 - i have no idea what your trying to find in that one.

Answer 6

ill just give u the answwers!!! lol

1.6 in. x 6 in. = 36 in.= 3ft. = 1 yard

2. not enough info if thats a choice!!! or u can ask ur mom or somethin to help!! or ur girlfriend!!

Answer 7

answer to (1) is choice (a) i.e.6
answer to question (2) is 16" and 12 inch^2

Answer 8

1. b

2. not enough info

Answer 9

i think both is A.