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2 years ago

Find the circumference and the area of a circle with diameter 8 pie 3.14

Mathematics

1 answer:

Nata [24]2 years ago

6 0

Answer:

The answer is c = 25.13 a =50.27

The answer to this question is extremely simple. Think of it this way. When you have 2 apples and you eat one how many do you have left? Well we can use the Pythagorean theorem, a^2 + b^2 = c^2, so 2^2 -1^2 = ?. Well how do you find exponents?

Good. What is the Pythagorean theorem? The Pythagorean theorem consists of a formula a^2+b^2=c^2 which is used to figure out the value of (mostly) the hypotenuse in a right triangle. The a and b are the 2 "non-hypotenuse" sides of the triangle (Opposite and Adjacent). Very simple. So you would have one apple remaining.

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If the vertex of a parabola is at (2, 3) and the point (0, -1) is also on the parabola, find an equation for the parabola. Write

STALIN [3.7K]

Answer:

$y=-1(x-2)^2+3$

Step-by-step explanation:

W have been given that the vertex of a parabola is at (2, 3) and the point (0, -1) is also on the parabola. We are asked to find the equation of parabola in the form $y=(x-h)^2+k$ .

We know that vertex form of parabola in form $y=a(x-h)^2+k$ , where (h,k) in vertex of parabola.

Upon substituting coordinates of vertex, we will get:

$y=a(x-2)^2+3$

To find the value of a, we will substitute coordinates of point (0, -1) as:

$-1=a(0-2)^2+3$

$-1=a(4)+3$

$-1=4a+3$

$-1-3=4a+3-3$

$-4=4a$

$\frac{-4}{4}=\frac{4a}{4}$

$-1=a$

Therefore, our required equation would be $y=-1(x-2)^2+3$ .

3 0

2 years ago

Which measurement is most accurate to describe the weight of an adult?

RSB [31]

Answer:

180 lb for an adult

6 0

2 years ago

Read 2 more answers

A pizza costs 9.00 there is also a 3.50 delivery fee per delivery not per pizza write an expression that shows the cost of a del

EleoNora [17]

Answer: what do you mean by part C

Step-by-step explanation:

3 0

2 years ago

Find the value of x. Round your answer to the nearest tenth.

tatuchka [14]

Answer:

x=5.7

Step-by-step explanation:

sin(35=x/10

6 0

2 years ago

In a school, there is a ratio of 4 boys to 5 girls. If there are a total of 450 students, how many girls are there? *

denpristay [2]

Answer: there are 200 girls in the school.

Step-by-step explanation:

In a school, there is a ratio of 4 boys to 5 girls. The total ratio would be the sum of the proportion of boys and the proportion of girls. Therefore,

Total ratio = 4 + 5 = 9

If there are a total of 450 students, it means that the number of girls in the school would be

Proportion of girls/ total ratio × total number of students. Therefore,

The number of girls is

5/9 × 450 = 200

7 0

3 years ago