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3 years ago

What is thr answer of (a-b) (a+2b)

Mathematics

1 answer:

kari74 [83]3 years ago

3 0

Answer:

Step-by-step explanation:

Use FOIL method

F -> First

O Outside

I inside

L Last

(a - b)(a + 2b)= a*a + a *2b + (-b)*a + (-b)*2b

= a² + 2ab - ab - 2b²

Combine like terms

= a² + ab - 2b²

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If you apply the changes below to the absolute value parent function, f (x) = |x|, what is the equation of the new function?

nata0808 [166]

First understand the concept values.

x goes 2units right.
Then it goes 3 units down.

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2 years ago

Suppose Neil Armstrong decided to throw a golf ball into the air while he was standing on the

lawyer [7]

Answer:

At 7 seconds the instantaneous rate of change of the function s(t) with time which is the velocity is -11.18 m/s

Step-by-step explanation:

The given information on the height can be written as follows;

s(t) = -2.72·t² + 26.9·t + 6

Where;

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t = The time taken during the motion of the golf ball

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Therefore the ball is coming down with 11.18 m/s speed at 7 seconds.

3 0

3 years ago

Solve the system of linear equations using linear combination.

snow_lady [41]

Answer:

a = 1, b = 7

Step-by-step explanation:

Given the 2 equations

3a + 6b = 45 → (1)

2a - 2b = - 12 → (2)

Multiply (2) by 3 and add to (1) to eliminate the term in b

6a - 6b = - 36 → (3)

Add (1) and (3) term by term

(3a + 6a) + (6b - 6b) = (45 - 36)

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3 years ago

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mrs_skeptik [129]

Step-by-step explanation:

radius=diameter/2

r = 6/2 m

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= 4/3π×(3)³

=36π m³

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3 years ago

Help me ASAP PLEASE I NEED THIS DONE BY 7:30 this is test graded

dimaraw [331]

I'm not quite sure but the first one I'm pretty sure....

+3,+5,+7,+9 so then +11,+13,+15,+17,+19

24+11=35 => 6th term

35+13=48 => 7th term

48+15=63 => 8th term

63+17=80 => 9th term

80+19=99 => 10th term

14,34,54,74,94

Each increases by 20...

94+20= 114

114+20= 134

134+20= 154

154+20= 174

174+20= 194

37,46,55,64,73

Each increasing by 9,

73+9= 82

82+9= 91

91+9= 100

100+9= 109

109+9= 118

5 0

3 years ago

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What is thr answer of (a-b) (a+2b)​

What is thr answer of (a-b) (a+2b)