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IRINA_888 [86]
3 years ago
7

Evaluate the expression when x=-5. x²+9x-6

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0

Answer: 64

Step-by-step explanation:

X2+9x-6

When x=-5

(-5)^2+9(5)-6

25+45-6

70-6

64

ch4aika [34]3 years ago
7 0

Answer:

-26

Step-by-step explanation:

{ - 5}^{2}  + 9( - 5) - 6 \\ 25 - 45 - 6 \\  - 26

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Answer: The first number that appears in both sequences is 28.

Step-by-step explanation:

Let's write down numbers from each of the sequences

Sequence 1) We need to start from 7 and multiply 4

7x4=28, 28x4=112

The sequence is 7,28,112...

Sequence 2) We need to start from 8 and add 5

5+8=13, 13+5=18, 18+5=23, 23+5=28

The sequence is 8,13,18,23,28...

They both have 28

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Step-by-step explanation:

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1. Pilar and her sister Marisol live near the beach. Pilar has 80 seashells in her collection when Marisol started collecting se
jeka94

Answer:

a. 20x > 10x + 80

b.  •20x > 10x + 80

• Subtract 10x from both sides: 20x -10x > 10x + 80 - 10x

• Simplify: 10x > 80

• Divide both sides by 10:   10x/10 > 80/10

• Simplify: x > 8

Step-by-step explanation:

10x + 80 = number of seashells Pilar has.

20x = number of seashells Marisol has.  

answer for a:  20x > 10x + 80

answer for b: 20x > 10x + 80

• Subtract 10x from both sides: 20x -10x > 10x + 80 - 10x

• Simplify: 10x > 80

• Divide both sides by 10:   10x/10 > 80/10

• Simplify: x > 8

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3 years ago
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