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MrRissso [65]
3 years ago
7

If the radius of a circle is 15 then the diameter of the same circle is

Mathematics
2 answers:
Ivahew [28]3 years ago
8 0

Answer:

30

Step-by-step explanation:

The diameter is twice the radius. Therefor, the radius is 1/2 the diameter

Svetlanka [38]3 years ago
6 0

30, radius is equal to half the diameter, so to get diameter from the radius, multiply the radius by two.

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maya wants to burs 600 calories, so far, she burned 584.3 calories. how many more calories must maya burn
MrMuchimi

Answer:

15.7

Step-by-step explanation:

600 - 584.3 = 15.7

5 0
2 years ago
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
2 years ago
The cost of membership in the school kayaking club is a $10.00 fee and $3.00
Luden [163]

Answer:

igwif

Step-by-step explanation:

392e6×0273=2048

3 0
3 years ago
from a window 24 feet above the ground, the angle of elevation to the top of another building is 38 degrees. The distance betwee
Delvig [45]

Answer:

The  height of the building is 73.2\ ft

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle ABC

tan(38\°)=\frac{BC}{AB}

we have

AB=63\ ft

substitute and solve for BC

tan(38\°)=\frac{BC}{63}

BC=(63)tan(38\°)=49.2\ ft

Find the height of the building

The  height of the building (h) is equal to

h=BC+24=49.2+24=73.2\ ft

6 0
3 years ago
Write and solve a system of equations for this question please
andre [41]
Let b and s be the velocity of the boat and stream respectively....

3(b-s)=27

b-s=9

b=9+s  we will use this in the second equation....

2(b+s)=30

b+s=15, now use b found above in this to get:

9+s+s=15

2s+9=15

2s=6

s=3, and since from earlier b-s=9, b=9+s so

b=12

So the speed of the boat is 12mph and the stream is 3 mph
6 0
3 years ago
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