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balu736 [363]
3 years ago
12

Can someone please answer 5, 6 and 7? Thank you.

Mathematics
1 answer:
Montano1993 [528]3 years ago
6 0
Reduce a 24 cm by 36 cm photo to 3/4 original size.

The most logical way to do this is to keep the width-to-height ratio the same:  It is 24/36, or 2/3.  The original photo has an area of (24 cm)(36 cm) = 864 cm^2.

Let's reduce that to 3/4 size:  Mult. 864 cm^2 by (3/4).  Result:  648 cm^2.

We need to find new L and new W such that W/L = 2/3 and WL = 648 cm^2.

From the first equation we get W = 2L/3.  Thus, WL = 648 cm^2 = (2L/3)(L).

Solve this last equation for L^2, and then for L:

2L^2/3 = 648, or (2/3)L^2 = 648.  Thus, L^2 = (3/2)(648 cm^2) = 972 cm^2.

Taking the sqrt of both sides, L = + 31.18 cm.  Then W must be 2/3 of that, or W = 20.78 cm.

Check:  is LW = (3/4) of the original 864 cm^2?  YES.


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300 \div 120 = 2.5
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2 years ago
PLEASE HELP ME WITH THIS PROBLEM! PLEASE
Vladimir [108]

Answer:

when I find out the two others ill edit this,sorry i'm kinda slow lol

Step-by-step explanation:

<u>Team     Wins    Losses</u>

Tigers     20        

Vikings    25        10

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4 0
2 years ago
Help me please i dont understand
kipiarov [429]

Answer:

C=75.36

A=452.16

Step-by-step explanation:

C=2x3.14xr

2×\pi×12=75.36

A=3.14×r^{2}

3.14x12x12=452.16

5 0
3 years ago
Xavier can swim at a constant speed of 5/3 meters/second.
koban [17]

Answer:

Step-by-step explanation:

Well we can find how far he travels in 55 seconds if he swims at constant speed of 5/3 meters.

5/3 times 55 = approx. 91.66 meters

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7 0
2 years ago
Write an inequality for the sentence: The total t is less than sixteen.
RoseWind [281]
T<16 is your inequality.
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