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tatyana61 [14]
3 years ago
10

Which of the following opt have the same value as 20% of 45. Choose 3 answers:

Mathematics
2 answers:
Setler79 [48]3 years ago
5 0

Answer:

B,

D

And e

Step-by-step explanation:

Nina [5.8K]3 years ago
4 0
A. 20/45 • 100 = 44 4/9
B. 1/5 • 45 = 9
C. 20 • 45 = 900
D. 20/100 • 45 = 9
E. 0.2 • 45 = 9

20% of 45 is 9. So your answers are B,D,and E.
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Convert x2 + y2 -4x = 0 to polar form.
Bingel [31]

Answer:

r(r-4\cos \theta)=0

Step-by-step explanation:

We are given the following equation:

x^2 + y^2 -4x = 0

We have to convert it into polar form.

We put

x = r \cos \theta\\y = r\sin \theta

Putting values, we get:

x^2 + y^2 -4x = 0\\(r\cos \theta)^2 + (r\sin \theta)^2 - 4(r\cos \theta) = 0\\r^2(\cos^2 \theta + \sin^2 \theta) - 4r\cos \theta = 0\\r^2 - 4r\cos \theta = 0\\r(r-4\cos \theta)=0

is the required polar form.

7 0
3 years ago
Which equation below would be parallel to the line y= 2x+5 and pass through the point (3,1)
ki77a [65]
The answer is A, first the question said parallel so it should have same gradient and the gradient of the equation is 2 So eliminate D and bring (3,1) in each of the last three equation, and you will find just A conformed
5 0
2 years ago
A cylinder has a height of 16 cm and a radius of 5 cm. A cone has a height of 12 cm and a radius of 4 cm. If the cone is placed
Archy [21]
Volume of Cylinder
= πr²h
= (3.14)(5)²(16)
= 1256 cm³

Volume of Cone
= 1/3πr²h
= 1/3(3.14)(4)²(12)
= 200.96 cm³

Volume of air space
= Volume of Cylinder - Volume of Cone
= 1256 - 200.96
= 1055.04 cm³
≈ 1055 cm³ (nearest whole number)
7 0
3 years ago
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Sindrei [870]

Answer:

x = -3

Step-by-step explanation:

You can try the answers to see which works. Or, you can actually solve the equation for x.

... 7 - log2(x+5) = 6

... 1 - log2(x+5) = 0 . . . . subtract 6

... 1 = log2(x+5) . . . . . . . add log2(x+5)

... 2 = x +5 . . . . . . . . . . . take the antilog

... -3 = x . . . . . . . . . . . . . subtract 5

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3 years ago
Jackie is selling smoothies at a school fair. She starts the day with $15 in her cash box to provide change to her customers. If
nadezda [96]

the answer would be D

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3 years ago
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