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bekas [8.4K]
2 years ago
15

Find the value of x. If​ necessary, write your answer in the simplest radical form.

Mathematics
2 answers:
Zigmanuir [339]2 years ago
6 0

Answer is = 90°

Hope this helps

Paul [167]2 years ago
3 0

Answer:

x = 4\sqrt{5}

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 1² = 9²

x² + 1 = 81 ( subtract 1 from both sides )

x² = 80 ( take square root of both sides )

x = \sqrt{80} = \sqrt{16(5)} = \sqrt{16} × \sqrt{5} = 4\sqrt{5}

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Solve the following simultaneous linear equations.<br>2x + y = 5<br>4x – 3y = -10​
Jet001 [13]

Answer:

(1/2,4)

Step-by-step explanation:

First, determine y in first equation: 2x+y=5 or  y=5-2x

replace value of y determined in first equation (5-2x) into 2nd equation    

4x-3(5-2x)=-10

4x-15+6x=10

10x=5

x=1/2

put value of x into either equation to solve for y so

2(1/2)+y=5

1+y=5

y=4

answer: x=1/2, y=4

check answer by substituting x and y into either equation:

4x-3y=-10

4(1/2)-3(4)=-10

2-12=-10

-10=-10

or

2x+y=5

2(1/2)+4=5

1+4=5

5=5

7 0
3 years ago
Please help me out!!!!!!!!!!!!!!!!!
marta [7]

Answer:

Step-by-step explanation:

2x+y=14+y

x=7

7+13y=35-y

14y=28

y=2

7 0
3 years ago
Read 2 more answers
How do you find the vertex and the axis of symmetry of the equation? y = 2x^2 + 28x - 10
Maurinko [17]

Answer:

-7±3√6

Step-by-step explanation:

8 0
3 years ago
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POSSIBLE
lutik1710 [3]

Answer:

78.5 or 79 inches when rounded.

Step-by-step explanation:

2 in wide so get half of 2 which is 1 times 3.14 = 3.14. then times that by the 25 inch radius = 78.5

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2 years ago
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The first answer is correct .
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3 years ago
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