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fenix001 [56]
3 years ago
6

Question Progress

Mathematics
1 answer:
Advocard [28]3 years ago
6 0

Answer:

C = 28.278  m

Step-by-step explanation:

The attached figure shows a circle whose diameter is 9 m.

Radius = Diameter/2

r = 9/2 = 4.5 m

The circumferance of the circle is given by :

C = 2πr

Put r = 4.5 m in the above formula

C = 2 × 3.142 × 4.5

= 28.278  m

So, the circumference of this circle is 28.278  m.

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Kai used a protractor to measure the angle below. Is Kai using the protractor correctly? Explain your answer. If Kai is
Paladinen [302]

Answer:

he is using it correctly

Step-by-step explanation:

he is using it correctly because the bottom line of the angle matches with the 0° line on the protractor.

5 0
3 years ago
The scale On a map is 2 cm equals 15 miles is measures the distance to the next town at seven cm how many miles away is the next
Ghella [55]

Answer:

2cm = 15 mi

you have to figure out how far 7cm equals, so you would have:

6cm = 45 mi

that leaves 1 cm left, so if 2cm = 15 mi then 1 cm would equal 7.5 mi.

so your distance would be 45 mi + 7.5 mi = 52.5 mi to the next town.

Step-by-step explanation:


4 0
3 years ago
Estimate L4 and R4 over [0,7] for the function f(x) = 6x^2
jasenka [17]

The value of  L4 and R4 over [0,7] for the function f(x) = 6x² will be 2[2√0 + 2√2 + 2√4 + 2√6] and  2[2√2 + 2√4 + 2√6 + 2√8] respectively.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

It is given that the function is,

I'm assuming that you mean the left and right Riemann sums with four equal subintervals when you refer to L4 and R4.

If so, then Δx = (8-0)/4 = 2, and f(x) = 2√x.

L4 = f(0)Δx + f(2)Δx + f(4)Δx + f(6)Δx

L4 =2[2√0 + 2√2 + 2√4 + 2√6]

R4 = 2[2√2 + 2√4 + 2√6 + 2√8]

Thus, the value of  L4 and R4 over [0,7] for the function f(x) = 6x² will be 2[2√0 + 2√2 + 2√4 + 2√6] and  2[2√2 + 2√4 + 2√6 + 2√8] respectively.

Learn more about the function here:

brainly.com/question/5245372

#SPJ2

8 0
1 year ago
which of the following expresses the coordinates of the foci of the conic section shown below? (x-2)^2/4+(y+5)^2/9
elena55 [62]

Step-by-step explanation:

\frac{(x - 2) {}^{2} }{4}  +  \frac{(y + 5) {}^{2} }{9}  = 1

This is the equation of the ellipse. Since the denominator is greater for the y values, we have a vertical ellipse. Remember a>b, so a

The formula for the foci of the vertical ellipse is

(h,k+c) and (h,k-c).

where c is

Our center (h,k) is (2, -5)

{c}^{2}  =  {a}^{2}  -  {b}^{2}

Here a^2 is 9, b^2 is 4.

{c}^{2}  = 9 - 4

{c}^{2}  = 5

c =  \sqrt{5}

So our foci is

(2, - 5 +  \sqrt{5} )

and

(2, - 5 -  \sqrt{5} )

6 0
2 years ago
Describe and correct the error in finding the value of x.
Colt1911 [192]

Answer: 4+5 not 5 the real x is 13.5

Step-by-step explanation:

It is supposed to be 4/6 = (4+5)/x

So

2/3 = 9/x

x = 27/2 = 13.5

5 0
3 years ago
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