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Shkiper50 [21]
3 years ago
7

2. Estimate the sum. Choose the mixed number that is closest to the estimate. 5.5 + 4.2

Mathematics
1 answer:
White raven [17]3 years ago
3 0

Answer:

9 9/10

Step-by-step explanation:

10

55/10 +42/10=97/10=9 7/10

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Select all the options below that correctly fill in the blank. A ____ is a subcategory of polygon.
yaroslaw [1]

Answer:

triangle is a subcategory of polygon

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3 years ago
A container holds 13 quarts of water. How much is this in gallons?
patriot [66]

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3 1/4 gallons or 3.25 gallons

Step-by-step explanation:

6 0
3 years ago
Mark can remember only the first 4 digits of his friend's phone number. He also knows that the number has 7 digits and that the
denis-greek [22]

Answer:

<em>19800 seconds, or 330 minutes, or 5 hours + 30 minutes</em>

Step-by-step explanation:

<u>Number Permutations</u>

We know the phone number has 7 digits, 4 of which are known by Mark. This leaves him 3 digits to guess with. We also know the last one is not zero. The number can be represented as

XXY

Where X can be any digit from 0 to 9 and Y can be any digit from 1 to 9. The first two can be combined in 10x10 ways, and the last one can be of 9 ways, this gives us 10x10x9 = 900 possible permutations.

If each possible number takes him 22 seconds, every possibility will need

22x900=19800 seconds, or 330 minutes, or 5 hours + 30 minutes

3 0
3 years ago
Pretty sure this work is wrong , need it corrected
Makovka662 [10]
C/30 = 8/12
c/30 = 2/3
3c = 60
c = 60/3
c = 20
8 0
3 years ago
The dimensions of a rectangle are 20' by 40'. If a model rectangle with a scale of 5' = 10'' is to be made, find the dimensions
VMariaS [17]

20’ / 5’ = 4

4 x 10” = 40”

40’ /5’ = 8

8 x 10” = 80”

Scaled dimension: 40” x 80”

6 0
3 years ago
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