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Paul [167]
3 years ago
12

Can someone please help me with this expanding brackets problem ? Quick ! I will give 20 points :)

Mathematics
1 answer:
eimsori [14]3 years ago
7 0

Step-by-step explanation:

(x + 1)(x - 6)(x + 7)

{x}^{2}  - 6x + x - 6(x + 7)

{x}^{3}  + 7x - 6 {x}^{2}  - 42x +  {x}^{2}  + 7x  - 42

{x}^{3}  - 5x {}^{2}  - 35x - 42

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Simplify the radical expression.
mixas84 [53]

√50

= √(2 × 25)

= √2 × √25

= √2 × 5

= 5√2

3 0
3 years ago
Match event to the probability. Each probability will be used once. The probabilities are 0, 0.01, 0.3, 0.6, 0.99, and 1. This e
Zarrin [17]

Answer:

0.99, 0.6, 1, 0.01, 0, 0.3 respectively

Step-by-step explanation:

This event is extremely likely but there will be some occasions when it does not occur.  The correct match is 0.99

This event will occur more often than not. The correct match is 0.6

This event will always occur. The correct match is 1

This event is very unlikely, but it will occur once in a while in a long sequence of trials. The correct match is 0.01

This event is impossible. It can never occur. The correct match is 0

This event is reasonably likely, and will occur sometimes, but not most of the time. The correct match is 0.3

3 0
3 years ago
A painter earns $15 per hour what is the minimum number of hours he must work to earn at least $200? Write an inequality To repr
BlackZzzverrR [31]

15x>200.  The minimum number of hours he must work to earn at least $200 is 14 hours.  Working 14 hours will allow him to receive $210.  This is the minimum number of hours he can work because if he works 13 hours instead, he will only make $195, which is less than 200.  15x>200 (15x is equal to or greater than 200) x=14.

8 0
4 years ago
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Solving a Quadratic Equation
Dafna1 [17]

Answer:

The factored form of the equation is (x + 4)(x – 6) = 0.

Step-by-step explanation:

(x – 4)(x + 2) = 16

Foil the left side

x^2 +2x-4x-8 =16

Combine like terms

x^2 -2x-8 = 16

Subtract 16 from each side

x^2 -2x-8-16 =16-16

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Factor the left hand side

What two numbers multiply to -24 and add to -2

-6*4 =-24

-6+4 = -2

(x-6) (x+4) =0

Solving using the zero product property

x-6 =0   x+4=0

x=6        x=-4

7 0
3 years ago
Read 2 more answers
James earned $570 after working 12 days.
AlekseyPX

Answer:

1900

Step-by-step explanation:

570/12 = The rate at which James earns money, or $47.5

47.5 × 40 = 1900 Because you wan to know the value after 40 days

8 0
3 years ago
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