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Morgarella [4.7K]
3 years ago
10

This is my third time posting this bc i kept getting the wrong answer please help me

Mathematics
1 answer:
jonny [76]3 years ago
4 0

Answer:

B

Step-by-step explanation:

So we have:

\frac{x^{\frac{2}{3}}}{y^{\frac{-3}{4}}}

First, we recall that we can switch an exponent from the denominator to the numerator if we multiply the exponent by -1 and vice versa. Therefore:

=x^{\frac{2}{3}}}\cdot {y^{\frac{3}{4}}

Now, use the following property:

a^{x/n}=\sqrt[n]{a^x}

Therefore:

x^{\frac{2}{3}}=\sqrt[3]{x^2}

And:

y^{\frac{3}{4}}=\sqrt[4]{y^3}

And so together:

=x^{\frac{2}{3}}}\cdot {y^{\frac{3}{4}}\\=\sqrt[3]{x^2}\cdot\sqrt[4]{y^3}

Our answer is B :)

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In the figure below, the segment that appears to be tangent to the circle is tangent to the circle. Which of the following is th
maria [59]

Answer:

Step-by-step explanation:

Check attachment for diagram,

Since line AB is tangent to the circle then, <OAB is a right angle,

Then, we can apply Pythagoras theorem to the right angle triangle,

NOTE: from the centre of the circle to the tangent point at A is the radius of the circle,

And also, the total length of OB is

OB = r + 15

Then, applying Pythagorean theorem

OB² = OA² + AB²

(r+15)² = r² + 25²

(r+15)(r+15) = r² + 625

r² + 15r + 15r + 225 = r² + 625

Collect like terms

r² + 30r - r² = 625 - 225

30r = 400

Divide both sides by 30

r = 400 / 30

r = 13.33

So, the diameter of the circle is related to the radius by the relation

Diameter = 2 × radius

d = 2 × r

d = 2 × 13.33

d = 26.67

To the nearest tenth implies that to 1d•p

d ≈ 26.7

So, the diameter of the circle is 26.7

6 0
3 years ago
Can you guys help me how to solve this step by step
GaryK [48]
Area of rectangle = Length x width, Area of triangle - (1/2) base x height
Surface Area is the sum of the area of all of the faces.

Your picture has 5 faces:
1) rectangle on the left
2) square in the middle
3) rectangle on the right
4 & 5) 2 congruent (identical) right triangles

Area of face #1: 5 x 4 = 20
Area of face #2: 4 x 4 = 16
Area of face #3: 3 x 4 = 12
Area of face #4: (1/2) x 3 x 4 = 6
Area of face #5: (1/2) x 3 x 4 = 6
Sum of the Area of the faces: 60

Answer: Surface Area of the figure is 60 units²

Volume = Length x width x height
             =     5      x    4    x     3
             = 60 units³

Answer: Volume of the figure is 60 units³



7 0
3 years ago
Read 2 more answers
Sandy purchases her college books for the upcoming semester. She has to pay $98
Neporo4naja [7]

Step-by-step explanation:

98+38+74=210

210 divided by 100= 2.1

2.1 times 7.5= $15.75

Sandy will pay $15.75 dollars in tax

4 0
3 years ago
Read 2 more answers
Melinda takes out a loan to purchase a car. The balance on her loan after x months is represented by the equation y = 10,000 – 2
Arlecino [84]

Answer:

Melinda's loan will be equal to the value of the car after 10 months.

Step-by-step explanation:

We are given,

Balance on the loan is given by, y = 10,000 - 250x.

Also, Value of the car is given by, y = 8,000 - 50x.

Since, it is required to make Melinda's loan equal to the value of the car.

We have,

10,000 - 250x = 8,000 - 50x.

i.e. 250x - 50x = 10,000 - 8,000

i.e. 200x = 2,000

i.e. x = 10.

Thus, Melinda's loan will be equal to the value of the car after 10 months.

5 0
3 years ago
Read 2 more answers
You roll 2 dice. What is the probability of getting two 5's?
eduard
The coment before me is super funny lol
The heck burger burger burger burger burger burger
4 0
2 years ago
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