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Alja [10]
3 years ago
9

Given the system of equations, what is the solution?

Mathematics
1 answer:
Alla [95]3 years ago
5 0

Answer:

\large\boxed{x=3\ and\ y=2\to(3,\ 2)}

Step-by-step explanation:

\underline{+\left\{\begin{array}{ccc}x+2y=7\\x-2y=-1\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=6\qquad\text{ivide both sides by 2}\\.\qquad x=3\\\\\text{Put the value of x to the first equation:}\\\\3+2y=7\qquad\text{subtract 3 from both sides}\\\\2y=4\qquad\text{divide both side by 2}\\\\y=2

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What is sin A=0.3784 rounded to the nearest whole degree
DENIUS [597]

Answer:

∠A = 22°

Step-by-step explanation:

Given:

\sin (A)=0.3784

We take inverse of sine to find angle A.

So, \angle A=sin^{-1}(0.3784)=22.23°

22.23° rounded to nearest whole degree is 22°.

∴ \angle A=22°.

6 0
3 years ago
I don't know it at all I need help
damaskus [11]
I hope this helps you

7 0
4 years ago
What is the length of the diagonal, ddd, of the rectangular prism shown below?
ad-work [718]

Answer:

≈ 9.6 units

Step-by-step explanation:

<em>Refer to attachment</em>

The diagonal d is the hypotenuse of right triangle with sides of 5 and a

The line a is the hypotenuse of the right triangle with the sides of 2 and 8.

<u>So, as per Pythagorean theorem:</u>

  • d² = 5² + a²
  • d²= 5² + 2²+ 8² = 25 + 4 + 64 = 93
  • d² = 93
  • d = √93
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3 0
3 years ago
48.7 simplified is...?<br><br> 48.7 =~ ???
son4ous [18]
As a fraction it’s 48 7/10
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Hope that helped!
7 0
3 years ago
I know the answer is 16 cause I cheated and looked on Google but I would like someone to help me or show me on a piece of paper
nadezda [96]
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