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kaheart [24]
3 years ago
9

jake noted that the speech of light is approximately 1.1 x 10^9 kh/k the speed of sound is approximately 1.2 x 10^3 kh/k and 11/

12=0.916
Mathematics
1 answer:
Deffense [45]3 years ago
3 0

Answer:

cdfJNMUCDJUNMCDJUUJNUJNHMKVSDFJNUMLSKLHUKJNHMC V

Step-by-step explanation:

hope that help

mark me brill

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The diagram shows 3 identical circles inside a rectangle.
Ilya [14]

Answer:

11700 mm²

Step-by-step explanation:

A rectangle is a quadrilateral with two equal, opposite and parallel sides. Each of the angles in a rectangle is 90°.

The horizontal distance of the rectangle = r + r + r + r = 4r

The vertical distance = r + h + r = 2r + h

Where h is the distance between the midpoint of the 2 up circles and the midpoint of the down circle.

Using Pythagoras:

 (2r)² = h² + r²

h² + r² = 4r²

h² = 3r²

h = √3r²

h = r√3

Vertical distance = 2r + h = 2r + r√3

Area of rectangle = vertical distance * horizontal distance

Area = 4r * (2r + r√3) = 8r² + 4r²√3 = 4r²(2 + √3)

Substituting:

Area = 4r²(2 + √3) = 4(28²)(2 + √3) = 11703.711 mm²

Area = 11700 mm² to 3 s.f

5 0
2 years ago
How do you write 4/5 in decimal form(Money form)
Oliga [24]
.80 cent if you wright it in percent its 80%
4 0
3 years ago
Read 2 more answers
Justin sells 78.5 ounces of lemonade for a total of $15.70.
Paha777 [63]

Answer:

5

Step-by-step explanation:

This is a pretty simple question to answer, the one step that needs to be done is divide 78.5 by 15.7. You should come up with 5.

6 0
3 years ago
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The question is in the picture.
harkovskaia [24]

Answer:

1. 3sqrt(2)

Choice C

2. 2sqrt(3)

Choice D

Step-by-step explanation:

1.  sqrt(x+3)

sqrt(15+3)

sqrt(18)

sqrt(9*2)

sqrt(9)sqrt(2)

3sqrt(2)

Choice C


2.  6/sqrt(x)

6/sqrt(3)

no radicals in the denominator, multiply by 1 in the form of the radical

6/sqrt(3) * sqrt(3)/sqrt(3)

6sqrt(3)/ (sqrt(3)*sqrt(3))

6sqrt(3)/3

2sqrt(3)

Choice D


8 0
3 years ago
Keith uses 18 cherries and 3 peaches to make a pie filling. Lena uses an equivalent ratio of cherries to peaches when she makes
Yuliya22 [10]
No, she cannot use a ratio of 21 to 6. You can figure this out in a few different ways. First you can simplify down the fraction 18/3, to get 6/1. 6/1 does not equal 21/6, because 21/6 equals 7/2. However, 6/1 it does equal 36/6. You could also noticed that three doubles to make six, yet 18 does not double to make 21
3 0
3 years ago
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