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-Dominant- [34]
3 years ago
10

Please help me with these problems​

Mathematics
1 answer:
Zarrin [17]3 years ago
6 0

Answer:

The answer to your question is:

a) Letter B

b) Letter D

Step-by-step explanation:

a)   | x | + 3 < 10

Formula

               | x | < a      ⇒        - a < x < a

             

               | x | + 3 < 10

                | x |  < 10 - 3

               |x | < 7          solution             - 7 < x < 7

                                    or              -7 < x and  x < 7    Letter B

b) it must be letter D x < 4 and x < 1

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Five times the larger number is 11 more than three time the smaller number. Also three times the smaller is 16 less four times t
alisha [4.7K]
Let the larger number be w and the smaller number be k;
5w-11=3k
3k+16=4w
Reorganizing the equations;
5w-3k=11
4w-3k=16
Subtracting equation 2 from equation 1:
w=-5
Replacing value of w in equation 1;
5(-5)-11=3k
-25-11=3k
3k=-36
k=-12
The numbers are -5 and -12
3 0
3 years ago
Distribute 2 (9x^2 + 3).
beks73 [17]

Answer:

18x^2+6

Step-by-step explanation:

2(9x^2+3)

multiply each term in parentheses by 2

2 x 9x^2+2 x 3

calculate product

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3 years ago
123843 + 458564 - 3456 x 45 x 34 divided by 4
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6 0
3 years ago
Read 2 more answers
sarah has 6 2/4 meters of rope and 3 3/4 meters of string. how much more rope does sarah have than string?
Iteru [2.4K]
Sarah has 2 3/4 more meters of rope.
5 0
3 years ago
Please help me and show your work
morpeh [17]

Answer:

Step-by-step explanation:

y = 3x + 4

Plugin x = 3 in the equation,

y = 3*3 + 4

 = 9 + 4

y = 13

Plugin x = 4 in equation,

y = 3*4 + 4

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y = 16

Plugin x = 5 in the equation,

y = 3*5 + 4

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y = 19

2) y =x - 7

Plugin x = 10 in the equation

y = 10 - 7

y = 3

Plugin x = 15 in the equation

y = 15 - 7

y = 8

Plugin x = 20 in the equation

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6 0
2 years ago
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