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scZoUnD [109]
4 years ago
5

How do combine like terms 3[x plus 3y] minus 5[x minus y?

Mathematics
1 answer:
Aleks [24]4 years ago
3 0

3(x + 3y) - 5(x-7)

Use the distributive prop. to simplify

3x + 9y - 5x - 35

Use The assoc. prop to move them around.

3x - 5x + 9y - 35

combine like terms

-2x + 9y - 35

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A rectangle has a width of 4 centimeters and a perimeter of 26 centimeters. Find the length.
Jobisdone [24]

Answer:

length = 9 cm

Step-by-step explanation:

perimeter = p =26 cm

width = w=  4 cm

perimeter of a rectangle= 2*w+2*L

L= length

so we have:

26 = 2*(4) +2*L

26= 8 +2L

26-8 = 2L

18 = 2L

L= 18/2

L =9 cm = length

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Answer:

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Step-by-step explanation:

it flips over the y axis like a mirror

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Answer:

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kykrilka [37]
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How to solve this brainteaser
laila [671]

Answer:

last row equals 333

Step-by-step explanation:

The clock showing time 9:00 should be worth 9 points, and the clock showing 3:00 should be worth 3 points, giving for the first row:

9 + 9 + 3 = 21

the three equal calculators showing 1234 are worth 10 points each:

1+2+3+4 = 10

and 10 + 10 + 10 = 30

the light bulbs should be 15 points each then giving 15 + 15 - 15 = 130 - 15 = 15 Notice also that they all have 5 rays of light coming out (so a 3 points per ray)

Now for the bottom line we have:

9 + (1+2+2+4) times 3 * 12 (only four rays on each bulb thus 4 * 3 = 12)

Notice we added the figures that appear in the calculator.

9 + 9 * 36 = 333

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3 years ago
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