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kolbaska11 [484]
3 years ago
6

Solve the inequality x^2-4x-7<0

Mathematics
1 answer:
ANEK [815]3 years ago
8 0

Answer:

Inequality Form:

2 − √ 11 < x < 2 + √ 11

Interval Notation:

( 2 − √ 11 , 2 + √ 11 )

Step-by-step explanation:

Solve the inequality for  x  by finding  a ,  b , and  c  of the quadratic then applying the quadratic formula.

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Jason's business computers need servicing. The expression 81x + 108 represents a contractor's total charges in dollars for fixin
kolbaska11 [484]

Answer:

2 hours

Step-by-step explanation:

Given

Contractor: 81x + 108

Electronic\ Store: 103x + 64

Required

Determine the hours when the charges are the same

To do this, we simply equate both expressions:

Contractor = Electronic\ Store

81x + 108 = 103x + 64

Collect Like Terms

81x - 103x = 64 - 108

-22x = -44

Divide both sides by -22

x =2

8 0
3 years ago
What is the sum of the 14th square number and the 2nd cube number?
tamaranim1 [39]

Answer:

204

Step-by-step explanation:

Square of 14 = 14 × 14 = 196

Cube of 2 = 2 × 2 × 2 = 8

So sum of square of 14 & cube of 2= 196 + 8 = 204

7 0
4 years ago
Read 2 more answers
Let n = 60! + 55! + 50! the unit digit of n and a number of digits to the left of the units digits are consecutive zeros before
Archy [21]

n=8320987125437793528348710310901843271933297732006335848276356027645952000000000000

So you can see there are 12 zeros before you hit the first non-zero, which is 2.

8 0
3 years ago
Helps to this answering please math
Pepsi [2]
1 million is the answer
6 0
3 years ago
Rewrite in simplest terms: (-8x + 5) - (x – 7)​
Ilia_Sergeevich [38]

Answer:

-9x+12

Step-by-step explanation:

(-8x + 5) - (x – 7)​

Distribute the minus sign

(-8x + 5) - x + 7

Combine like terms

(-8x -x+ 5+7) ​

-9x +12

7 0
3 years ago
Read 2 more answers
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