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Lemur [1.5K]
3 years ago
9

1. A rectangle with length 9 cm and width 3 cm. What’s the perimeter?

Mathematics
2 answers:
slega [8]3 years ago
6 0

Answer:

24 centimeters

9 cm + 9 cm + 3 cm + 3 cm = 24 cm

l + l + w + w

Mariulka [41]3 years ago
4 0

Answer:

24

Step-by-step explanation:

(9*2)+(3*2) = 24

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Step-by-step explanation:

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2 years ago
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Tems11 [23]
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2 years ago
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Find the width of the rectangular prism when the surface area is 208 square centimeters.
ozzi
SA=2(lw+wh+lh) This is the formula for finding the surface area of a rectangular prism, where SA is surface area, l is length, w is width, and h is height.

208=2(lw+wh+lh)
104=lw+wh+lh Here, I divided both sides by 2 to get ride of the 2.

Now, I used prime factorization to find out all the prime factors of 104, which are 2, 2, 2, and 13. Since rectangular prisms only have 3 dimensions, I needed to combine two of the prime factors. In this case, I can either combine 2 of the 2s to get 2, 4, and 13 or I can combine 13 with one of the 2s to get 26, 2, and 2.

If my dimensions were 2, 4, and 13...
my surface area would be 172 sq cm.

If my dimensions were 2, 2, and 26...
my surface area would be 208 sq cm.

Hence, the width of the rectangular prism when the surface area is 208 square centimeters can be either 2 or 26.
7 0
3 years ago
Two numbers rolled can be added to get a sum. Find P(sum is even.)
azamat
When you roll two numbers you have four kinds of outcomes: EE, EO, OE, OO (where E = even, O = odd).

You get an even sum only if you sum two numbers that are both even or both odd, therefore the outcomes wanted are two: EE and OO.

Therefore:
P(sum is even) = 2 / 4 = 0.5

Hence, there is a 50% probability that, when you roll two numbers, their sum will be even.
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What is the square of 215
Natali5045456 [20]
Aprox 14.663
now i need to fill this to 20 letters
hey how ya doin
i thing this is enough


6 0
3 years ago
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