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myrzilka [38]
3 years ago
12

Please help I'm running out of time

Mathematics
1 answer:
Ganezh [65]3 years ago
6 0
So remember that \sqrt{x}  \sqrt{y} = \sqrt{xy} so \sqrt{-18} = \sqrt{9}  \sqrt{-1}  \sqrt{2} =3i\sqrt{2} \sqrt{-2} = \sqrt{-1} \sqrt{2} =i\sqrt{2} i\sqrt{2}+3i\sqrt{2}=\sqrt{2}(i+3i)=\sqrt{2}(4i)=4i\sqrt{2} answer is second one or 4\sqrt{2}i
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Will give brainliest
Sonja [21]

The sum of the two <em>rational</em> equations is equal to (3 · n² + 5 · n - 10) / (3 · n³ - 6 · n²).

<h3>How to simplify the addition between two rational equations</h3>

In this question we must use <em>algebra</em> definitions and theorems to simplify the addition of two <em>rational</em> equations into a <em>single rational</em> equation. Now we proceed to show the procedure of solution in detail:

  1. (n + 5) / (n² + 3 · n - 10) + 5 / (3 · n²)      Given
  2. (n + 5) / [(n + 5) · (n - 2)] + 5 / (3 · n²)     x² - (r₁ + r₂) · x + r₁ · r₂ = (x - r₁) · (x - r₂)
  3. 1 / (n - 2) + 5 / (3 · n²)     Associative and modulative property / Existence of the multiplicative inverse
  4. [3 · n² + 5 · (n - 2)] / [3 · n² · (n - 2)]       Addition of fractions with different denominator
  5. (3 · n² + 5 · n - 10) / (3 · n³ - 6 · n²)       Distributive property / Power properties / Result

To learn more on rational equations: brainly.com/question/20850120

#SPJ1

4 0
2 years ago
If the annual interest rate is 2.8% then the weekly rate is
user100 [1]

Answer:

0.0538% (3 sf)

Step-by-step explanation:

annual = 1 yr = 12 months = 52 weeks

2.8% / 52 = 0.053846153

3 0
2 years ago
A tennis instructor chargers $40 for each one hour lesson and $25 for each half hour lesson if the instructors I come from 35 le
kaheart [24]
X = 1 hr lessons and y = 1/2 hr lessons

x + y = 35......y = 35 - x
40x + 25y = 1115

40x + 25(35 - x) = 1115
40x + 875 - 25x = 1115
40x - 25x = 1115 - 875
15x = 240
x = 240/15
x = 16 <=== there are 16 one-hr lessons
and 19 half-hr lessons
7 0
3 years ago
Whoever can answer all of these will get brainless
inn [45]

Firstly, brainly allows 1 question per question. So do not try this again.

Lets make the fractions all like terms.


242/4 - 37/4=205/4. Lets now make this a mixed fraction.
By doing 205/4, we find out that 4 goes in less than 51 times.

1. 51  1/4.

2. 11/2 = 66/12.....so 66/12 - 29/12= 37/12. Make it mixed fraction: 3 1/12.

3. 36/5=72/10.      72/10 - 37/10 = 35/10. As a mixed it is 3 1/2

4. 35/3 - 17/2 can be rewritten by finding their GCM (Greatest Common Multiple). In this case it is 6.

70/6 - 51/6 = 19/6. 3 1/6.

#LearnWithBrainly, get Verified Answers

5 0
1 year ago
Read 2 more answers
The equation is y = -5(3^x)
balandron [24]

Answer:

C

Step-by-step explanation:

Since the number outside of the parentheses is -5, the negative factor means that the line is reflected across the x-axis.

3 0
3 years ago
Read 2 more answers
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