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3 years ago

Wich number is the principal square root of 49

1 answer:

3 0

A principle square root of a real number that's not negative, such as 49, is the square root of that number that is not negative.

If you take the square root of 49, you get either -7 or 7, since both $7^{2}$ and $(-7)^{2}$ equal 49. However, the principle square root would be A) 7, since it's not negative.

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Should be pretty easy to answer, I just need a refresher. I forgot how to solve for triangles...

never [62]

Answer:

x = 25.734083

$x \approx 25.734$

Step-by-step explanation:

<u>Trigonometric Ratios</u>

The ratios of the sides of a right triangle are called trigonometric ratios. There are six trigonometric ratios, sine, cosine, tangent, cosecant, secant, and cotangent.

The longest side of the triangle is called the hypotenuse and the other two sides are the legs.

Selecting any of the acute angles as a reference, it has an adjacent side and an opposite side. The trigonometric ratios are defined upon those sides.

Note we are given an angle of 25°. The opposite side is 12 and the adjacent side is x. We need to relate those sides with a trig function (the tangent ratio)

Tangent Ratio:

$\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}$

Substituting:

$\displaystyle \tan 25^\circ=\frac{12}{x}$

Solving for x:

$\displaystyle x=\frac{12}{\tan 25^\circ}$

Calculating:

$\displaystyle x=\frac{12}{0.466307}$

x = 25.734083

Round to 3 decimals:

$\mathbf{x \approx 25.734}$

5 0

3 years ago

5. Cameron Benson is a dental assistant. He earns $17.25 per hour and time and a half for

Virty [35]

Answer:

$1,086.75

Step-by-step explanation:

you take the money per hour then multiply it by the hours worked.

6 0

3 years ago

Read 2 more answers

18 divided by (1+5)(4-2)

crimeas [40]

Answer:

= 3/2

$= \frac{18}{(1 + 5)(4 - 2)}$

$= \frac{18}{(6)(2)}$

$= \frac{18}{12}$

Simplify the fraction.

$= \frac{3}{2}$

7 0

3 years ago

Read 2 more answers

Yuki bought a pound of confetti for $12. What is the price, in dollars, per ounce of confetti? There are 16 ounces in 1 pound.

PtichkaEL [24]

For this case we can solve the problem by applying the following rule of three:
16 ounces ----> 12 $
1 ounces ------> x
Clearing x we have:
x = (1/16) * (12)
x = 0.75 $ / ounce
Answer:
The price, in dollars, per ounce of confetti is:
x = 0.75 $ / ounce

8 0

3 years ago

If b is the reference angle

Pani-rosa [81]

Answer:

what are you saying .......

6 0

3 years ago