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3 years ago

Identify the segments that have a ratio of lengths 1:2

Mathematics

1 answer:

Natalija [7]3 years ago

5 0

Answer:

C. BE:KA

Step-by-step explanation:

The segments that have a ratio of lengths 1:2 are BE and KA.

A diameter is a straight line that touches 2 points on the circumference of a circle and touches the point at the center. KA is the diameter.

A radius is a straight line touches a point on the circumference of a circle and touches the point at the center. BE is the radius.

The radius of a circle is half the diameter.

$r=\frac{d}{2}$

If the radius is 1 cm, then the diameter is 2 cm.

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One hundred grams of radium are stored in a container. The amount RR (in grams) of radium present after tt years can be modeled

drek231 [11]

Answer:

6967 years

Step-by-step explanation:

Given the exponential function :

R=100e−0.00043t

Time = t in years

R = final amount

Number of years in which only 5 grams of radium will be present :

R = 5

Plugging into our formula :

5 = 100 * e^−0.00043t

5 / 100 = e^−0.00043t

0.05 = e^−0.00043t

Take the In of both sides

−2.995732 = - 0.00043t

t = −2.995732 / - 0.00043t

t = 6966.819

t = 6966.819 years

t = about 6967 years

8 0

3 years ago

A train leaves Ayr station every day at 09:50 and arrives in Glasgow at 10:39. How long is the journey?

Pepsi [2]

Answer:

49 minutes

Step-by-step explanation:

9:50 to 10:00 is 10 minutes

plus the 39 minutes in 10:39

10 + 39 = 49

hope i helped

4 0

3 years ago

Read 2 more answers

Find the product -a^4(7a^5- 5a+ 5)

Nostrana [21]

$-a^4(7a^5- 5a+ 5) = - 7a^{9} +5 a^{5} -5 a^{4}$

3 0

3 years ago

3. Two quantities, x and y, are in a

frez [133]

Answer:

y = x + 1.8

Step-by-step explanation:

6 0

3 years ago

A rectangles length is 1.5 times its width. The perimeter of the rectangle is four more than 3 times the length. What are the di

vovikov84 [41]

Answer:

8 by 12 units

Step-by-step explanation:

Let w represent the width of the rectangle. Then the length is 1.5w. The perimeter is 4 more than 3 times this, so is (3(1.5w) +4) = 4.5w+4

The perimeter is given by the formula ...

P = 2(length + width)

Filling in the given values for the variables, we have ...

4.5w +4 = 2(w +1.5w)

4 = 0.5w . . . . . . subtract 4.5w and collect terms

8 = w . . . . . . . . . multiply by 2

length = 1.5×8 = 12

The rectangle is 8 units wide and 12 units long. The perimeter is 40 units.

4 0

3 years ago