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3 years ago

100 points for a multitude of questions

Mathematics

2 answers:

iris [78.8K]3 years ago

8 0

Answer:

x = 5

x = 3

x = 5

x = 2

Step-by-step explanation:

11 = 3(5) - 4

11 = 15 - 4

11 = 11

3/3 = 3 - 2

1 = 1

4 + 3(5) = 19

4 + 15 = 19

19 = 19

8(2) = -10(2) + 36

16 = -20 + 36

16 = 16

12 + 5(2) - 8 = 12(2) - 10

12 + 10 - 8 = 24 - 10

22 - 8 = 14

14 = 14

LUCKY_DIMON [66]3 years ago

4 0

1: 11-4= 7 .... 7/3 = x

2: Multiply by 3 .... x=3x-6 .... subtract the 3x.... x= -2

3: 19-4= 15 .... 15/3 .... 5=x

4: 8+10 .... 18x=36 .... 36/18 .... x= 2

5: 5x-8=12x-22 .... 5x=12x-14 ... -7x= -14 ... x=2

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Ivahew [28]

Answer:d

Step-by-step explanation:

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3 years ago

2x - 4x-7x-2x =10-7+3-1

Sophie [7]

Answer:

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Step-by-step explanation:

2x - 4x-7x-2x =10-7+3-1

Combine like terms

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6 0

3 years ago

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The polygons below are similar, but not necessarily drawn to scale. Find x.<br> 4 +<br> 36<br> AM

Mamont248 [21]

Answer:

x = 20

Step-by-step explanation:

In similar polygons, all corresponding sides are proportional. The scale factor between AB and DE is the same as between AC and DF.

$\frac{DE}{AB}=\frac{DF}{AC}\\\\\frac{4+x}{4}=\frac{36}{6}\\\\6(4+x)=4(36)\\24+6x=144\\6x=120\\x=20$

You can confirm that by plugging it back into the original equation:

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3 0

3 years ago

One pile of cards contains the number 2 through 6 in red hearts. A second pile of cards contains the numbers 4 through 8 in blac

nordsb [41]

Answer:

19/25.

Step-by-step explanation:

The total possible number of combinations of 2 cards from the 2 piles = 5*5 = 25.

Possible ways to get sum of 12 or more =

4,8 5,7 5,8 6,6 6,7 6,8 = 6 ways.

So the number of ways to get sum of < 12 = 25 - 6 = 19.

So the required probability = 19/25.

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hichkok12 [17]

Assuming rotation is about origin, then
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So
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B(6,12)->B'(-6,-12)
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3 years ago