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3 years ago

Which function has real zeros at x = -10 and x = -6

1 answer:

6 0

If it has zeros at x=(-6,-10) the factors of the equation are:

(x+6)(x+10) so the equation is the expansion of what is on the left...

f(x)=x^2+16x+60

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What is 43% of 166? (Round to the nearest whole number)

klemol [59]

43% of 166 is 71.38 so it would be 71 to the nearest whole number!

7 0

3 years ago

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Solve by completing a square r^2-8r+9

Tanzania [10]

Solving $r^2-8r+9$ by completing a square gives $(r+4)^2-7$

Step-by-step explanation:

We need to solve the equation $r^2-8r+9$ by completing a square

The completing a square method requires: $a^2\pm 2ab +b^2=(a\pm b)^2$

Solving:

$r^2-8r+9\\=(r)^2-2(r)(?)+(?)^2+9$

We need to add and subtract (4)^2=16 to make the equation a complete square

$=(r)^2-2(r)(4)+(4)^2-(4)^2+9\\=(r)^2-2(r)(4)+(4)^2-16+9\\=(r)^2-2(r)(4)+(4)^2-7\\=(r+4)^2-7$

So, Solving $r^2-8r+9$ by completing a square gives $(r+4)^2-7$

Keywords: Solve by completing a square

Learn more about Solve by completing a square at:

#learnwithBrainly

7 0

3 years ago

?<br> Expand & simplify<br> (x + 3)(x – 8)

sergejj [24]

X Times x is x^2
X^2-8x+3x-24
x^2-5x-24

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3 years ago

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP PLS PLS

Ivan

Answer:

12.5 inches

Step-by-step explanation:

2 / 4 = 0.5

0.5 in = 10ft

0.5 x 25 = 12.5

8 0

3 years ago

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I need help with this question :/

Setler79 [48]

Answer:

see explanation

Step-by-step explanation:

Note there is a common ratio between consecutive terms of the sequence, that is

- 450 ÷ 15 = 13500 ÷ - 450 = - 405000 ÷ 13500 = - 30

Thus to obtain the next term in the sequence multiply the previous term by - 30

start with 15 and multiply by - 30

8 0

4 years ago