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Jobisdone [24]
3 years ago
10

Plz answer for 20 pts

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0

Answer:

6) \: \: \sqrt{3} + 4 \sqrt{3} \: = \: 5\sqrt{3}

7) \: \: 3\sqrt{5}+ 6\sqrt{45} = 3\sqrt{5}+6\sqrt{9} \! \cdot \! \sqrt{5}

= 3\sqrt{5} + 6\! \cdot \! 3 \! \cdot \!  \sqrt{5}=3 \sqrt{5} + 18 \sqrt{5} = 21\sqrt{5}

KATRIN_1 [288]3 years ago
5 0

Answer to Problem 1: 5√3

Answer to Problem 2: 21√5

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So, the 9th term is
a_9=-11\cdot(-1)^9\cdot3^{9-1}=-11\cdot(-1)\cdot6561=72171
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The number of cars (c) in a parking lot increases when the parking fee (f) decreases.
Vitek1552 [10]

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3 years ago
What is the answer to this?​
Pie

Answer:

the third one

Step-by-step explanation:

p n p is p

p n q is p

q n q is q

q n p is p

p: true

q: false

got it?

6 0
3 years ago
Which point is on the circle centered at the origin with a radius of 5 units?
Aleonysh [2.5K]

Answer:

(2,√21)

Step-by-step explanation:

The circle centered at the origin has equation:

{x}^{2}  +  {y}^{2}  = 25

Any point that satisfies this equation lie on this circle.

When x=2, we substitute and solve for y.

{2}^{2}  +  {y}^{2}  = 25 \\ 4 +  {y}^{2}  = 25 \\  {y}^{2}  = 25 - 4 \\ {y}^{2}  = 21

Take square root to get:

y =  \pm \sqrt{21}

Therefore (2,-√21) and (2,√21) are on this circle.

From the options, (2,√21) is the correct answer

3 0
3 years ago
Read 2 more answers
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