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Lostsunrise [7]
3 years ago
7

Is -10 a solution of x+6=16

Mathematics
2 answers:
lyudmila [28]3 years ago
8 0

Answer: 10

Step-by-step explanation:

1) Subtract 6 from 6 and 16 because if you do something to one part of the equation, you have to do the same thing to the part. If you subtract 6 from 6 you get 0. If you subtract 6 from 16, your equation would be x = 10, that is your answer.

earnstyle [38]3 years ago
5 0

Answer:it is just 10

Step-by-step explanation:nope

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Radius of a circular ground is 21m. Find.
trapecia [35]

The circumference of a circle of radius r is

C=2\pi r

So, in your case, the circumference is

C=2\cdot \pi \cdot 21 = 42\pi

The circumference is actually the length of the "perimeter", so the answer to questions 1 and 2 looks the same actually

6 0
3 years ago
Which expression is equivalent to sec^2x − 1? a. cot2x b. tan2x c. csc2x d. cos2x
Nesterboy [21]
Sec^2 x - 1 = tan^2x

Proof:
Sec^2x = 1+ tan^2x

1/cos^2x = 1 + sin^2x/cos^2x

<span>1/cos^2x - sin^2x/cos^2x = 1
</span>Using common denominator:
(1-sin^2x)/cos^2x = 1
sin^2x + cos^2 x = 1
cos^2 x = 1 - sin^2x
Substituting : 
cos^2x/<span>cos^2x = 1
</span>1 = 1
Left hand side = right hand side 
4 0
3 years ago
Read 2 more answers
Please help!............
atroni [7]
The answer for your question is B. 5
7 0
2 years ago
Is the square root of 20 a rational number or irrational number
KIM [24]
A number is rational if it can be written in form a/b where a and b are integers and b is not equal to 0
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so
√20=2√5 which is irrational because we can't write it as a fraciton with only integers

also a rational number multilied by an irratinonal number=irrtaional
we know that the square root of any prime number will be irrational and 5 is prime so 2 times √5=rational times irrational=irrational

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7 0
3 years ago
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Which of the following are ordered pairs for the equation y = -4x + 5?
Firdavs [7]

(0, 5), (1, 1 ), ( - 1, 9 )

to test the points substitute the x-coordinate into the equation and if the value is equal to the y- coordinate then it is an ordered pair

(0, 5 ) → y = 0 + 5 = 5 ← ordered pair

(1, 1 ) → y = - 4 + 5 = 1 ← ordered pair

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( - 1, - 1 ) → y = 4 + 5 = 9 ← not an ordered pair

( - 1, - 9 ) → y = 4 + 5 = 9 ← not an ordered pair

(1, - 1 ) → y = - 4 + 5 = 1 ← not an ordered pair

(- 1, 1 ) → y = 4 + 5 = 9 ← not an ordered pair


8 0
3 years ago
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