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4 years ago

Please help - 30 points. I will mark the best answer Brainliest.

Mathematics

1 answer:

Aloiza [94]4 years ago

7 0

Answer: the first part of this question is C, the second part of this question is D

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Which expression is equivalent to x^-5/3

goblinko [34]

Answer:

Step-by-step explanation:

with a fractional exponent, the denominator becomes the root number. so we need a root of 3, which only b and c have.

between those two, b has no negative present whereas c does. since the original exponent was -5/3 we know our answer should have one.

thus c is our answer.

3 0

3 years ago

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

Help i will be giving brainliest!!

Elena L [17]

See the photo attached below, answer is D

4 0

3 years ago

Jin makes trail mix with apricots and walnuts. A package of dried apricots weighs 22.1 ounces. Jin divides the apricots equally

zysi [14]

Answer:

0.65 ounces

Step-by-step explanation:

divide 22.1 by 34

4 0

3 years ago

Read 2 more answers

What is the distance between the points (21,-30) and (3,8)

Scilla [17]

Answer:

approximately 42.05

Step-by-step explanation:

We know that the distance formula is $\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2} }$ , so if we use (3,8) as point 2 and (21, -30) as point 1 (note that these are interchangeable), we know that

x₂=3

y₂=8

x₁=21

y₁=-30

Then, we can plug it into the formula to get $\sqrt{(3-21)^{2} +(8-(-30))^{2 }} = \sqrt{18^{2}+38^{2}}=sqrt{1769}= 42.05 (approximately)$

5 0

3 years ago