2 years ago

Twelve people are given two identical speakers,

Mathematics

1 answer:

ziro4ka [17]2 years ago

3 0

You duckkersndnd d did d sksbdkdbskdbskdvsksvskdyfnrvakchrbakrbsksvrkd

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79% of 67 miles is what? Round answer to tenths place.

Neporo4naja [7]

Answer:

52.9

Step-by-step explanation:

Multiply 67 by .79

6 0

3 years ago

exercise 5 explain how you know the values of the digits in the number 58?then exercise 6 `explain why you should record a 1 in

melamori03 [73]

58 is 50 plus 8. So its 50 and 8.That is for the first one.

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2 years ago

NEED DONE ASAP!!

almond37 [142]

Answer:

A. 3x^2 + 4 = 52

3x^2 = 52 - 4

3x^2 = 48

x^2 = 48/3

x^2 = 16

x = $\sqrt{16}$

x = 4

B. x^2 - 121 = 0

x^2 = 121

x = $\sqrt{121}$

x = 11

C. (b + 4 )2 = 49

2b + 8 = 49

2b = 49 - 8

2b = 41

b = 41/2

3 0

2 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

2 years ago

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Theorem 8.9 : The line segment joining the mid-points of two sides of a triangle is parallel to the third side.

Alla [95]

Answer:

The essence of Mathematics lies in its freedom

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2 years ago