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ale4655 [162]
2 years ago
6

Since it's 4 questions ill give yall 50 points to whoever answers. <

Mathematics
2 answers:
bonufazy [111]2 years ago
7 0

Answer: 7 is 3 8 is 8 9 is 2 and 10 is 12

Step-by-step explanation

bored

CaHeK987 [17]2 years ago
6 0

Step-by-step Solutions:

<u>Question 7:</u>

  • √9
  • => √3 × 3
  • => 3

<u>Question 8:</u>

  • √64
  • => √8 × 8
  • => 8

<u>Question 9:</u>

  • √4
  • => √2 × 2
  • => 2

<u>Question 10:</u>

  • √144
  • => √12 × 12
  • => 12
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I really need help with this Triangle problem. ​
julia-pushkina [17]

Answer:

x = 10

y = 20

Step-by-step explanation:

\tan \: 30 \degree =  \frac{x}{10 \sqrt{3} }  \\  \\  \frac{1}{ \sqrt{3} } =  \frac{x}{10 \sqrt{3} }  \\  \\ \sqrt{3} x = 10 \sqrt{3}  \\  \\ x =  \frac{10 \sqrt{3} }{ \sqrt{3} }  \\  \\ x = 10 \\  \\  \cos 30 \degree =  \frac{10 \sqrt{3} }{y}  \\  \\  \frac{ \sqrt{3} }{2}  =  \frac{10 \sqrt{3} }{y}  \\  \\ y =  10 \sqrt{3}  \times  \frac{2}{ \sqrt{3} }  \\  \\ y = 10 \times 2 \\  \\ y = 20

4 0
2 years ago
Find the (real-valued) general solution to the differential equation. z′′+5z′=0
andrew-mc [135]
Try this solution:1. to make up the characteristic equation:α²+5α=0;\left[\begin{array}{ccc} \alpha=0 \\ \alpha =-5\\\end{array}2. to make up the final answer:y=C₁+C₂e⁻⁵ˣ
7 0
2 years ago
5x-3y=-11<br> x-2y=2<br> this is for home work please help
ale4655 [162]
5x - 3y = 11 ⇒ 5x - 3y = 11  ⇒   5x - 3y = 11
  x - 2y = 2   ⇒ -5(x - 3y) = 2 ⇒ <u>-5x + 15y = 2</u>
                                                           <u>12y</u> = <u>13</u>
                                                            12     12
                                                             y = 1 1/12
                                                 5x - 3(1 1/12) = 11
                                                 5x - 3 1/4 = 11
                                                <u>      +3 1/4    +3 1/4</u>
                                                            <u> 5x</u> = <u>14 1/4</u>
                                                              5          5
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8 0
2 years ago
Solve the equation 4n2 − 16n − 84 = 0 by completing the square.
melomori [17]

4n² - 16n - 84 = 0

Multiply both sides by 1/4 :

n² - 4n - 21 = 0

Add 21 to both sides:

n² - 4n = 21

Complete the square by adding 4 to both sides:

n² - 4n + 4 = 25

(n - 2)² = 25

Solve for n :

n - 2 = ± √25

n - 2 = ± 5

n = 2 ± 5

Then n = 2 + 5 = 7 or n = 2 - 5 = -3.

8 0
1 year ago
What is equivalent to 5:2
kozerog [31]

Answer:

2.5:1 or 2.5

Step-by-step explanation:

5/2 ÷ 2 would give you 2.5/1 or 2.5

3 0
2 years ago
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