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coldgirl [10]
3 years ago
6

51) Rewrite the formula for the circumference of a circle C=2 /pi "r" in terms of its diameter "d". Please show your working :)

Mathematics
1 answer:
sp2606 [1]3 years ago
3 0
The circumference of a circle=2\pir
We know that diameter is double the radius, and therefore can be written as d=2r
Circumference of a circle in terms of diameter is C=\pid
The 2r cancels out
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At the end of a summer sale, an air conditioner that originally sold d for 350 was on sale at a discount of 30%. What was the sa
Sonja [21]
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3 0
3 years ago
John wants to measure the height of a tree.he walks exactly 100 ft from the base of the tree and looks up.the angle from the gro
kati45 [8]

Answer: The height of the tree is 64.94ft

Step-by-step explanation:

Using the trigonometry of angles

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Tan 33° = height of the tree/100

Height of the tree= tan 33° * 100

= 0.6494*100

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6 0
3 years ago
Joanne has a cell phone plan that charges a flat rate of $97 and $0.10 for every text she sends. Her goal is to spend less than
Alik [6]
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6 0
3 years ago
X=4, y= -7, z=9 solve: -2x-3y+z
vesna_86 [32]

Answer:

22

Step-by-step explanation:

To solve this we can plug the values in.

-2x-3y+z

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22

8 0
3 years ago
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Alla [95]

1. 4^2 +x^2 = 6^2

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x^2 = 20, x = sqrt(20) = 4.47 miles


2. using the same equation as above: 20 inches

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4. using distance formula answer is 7.07 units

5.volume cylinder: 62.82, volume sphere: 33.51, difference:=62.82 -33.51 = 29.31 cubic inches 


8 0
3 years ago
Read 2 more answers
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