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Slav-nsk [51]
3 years ago
9

Solve. 3 15/16 divided by 2 1/4

Mathematics
1 answer:
Semmy [17]3 years ago
5 0
Turn both into improper fractions- there easier to work with that way
3 15/16 — 63/16
2 1/4 — 9/4
Then, set it up- you multiply by the reciprocal
63 Divided by 9
__. __
16. 4
Multiply by reciprocal (flipped-second fraction)
63. x. 4
16 9
Cross product- check to see if diagonally the numbers have similar factors- 63 and 9 have 9 in common, 16 and 4 have 4 in common
7. 1
4. 1
1 3/4
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Point, line and plane
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Prove tan3A= (cos(2A)-cos(4A))/ (sin(4A)- Sin(2A)) ...?
aivan3 [116]
The solution to the problem is as follows:

<span>cos2A - cos4A = -2 sin(6A/2).sin(-2A/2) = +2 sin(3A).sinA
 
and
 
sin4A - sin2A = 2 cos(6A/2).sin(2A/2) = 2 cos(3A).sinA

Hence RHS = (cos(2A)-cos(4A))/ (sin(4A)- Sin(2A)) = sin 3A / cos 3A = tan 3A = LHS
</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
4 years ago
Calculate the area of a circle with a diameter of 10 centimetres
Llana [10]

From the information we have the diameter of the circle is 10 cm.

Area of a circle is given by 1/4π d²

A = 1/4 π d²

π = 3.14

d² = 10² = 100

So we now calculate.

A =  1/4 ×  3.14 × 100

A = 0.25 × 3.14 ×100

A = 78.5 cm²

Using radius :

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A = π r²

A = 3.14 × 5²

A = 3.14 ×25

A = 78.5 cm²

So we still get the same answer.


5 0
4 years ago
Charlotte puts a present in a box with a length of 114 ft, a width of 34 ft and a height of 1 foot.What is the least amount of w
serious [3.7K]
I believe you would take (114*34*2)+(114*1*2)+(1*34*2) equals 8048 squared feet of wrapping paper. I could be wrong. I found the areas of each side and added them together to get a total
5 0
3 years ago
Which best describes the graphs of the line that passes through (0,2) and (6,4) and the line that passes through (2,1) and (5,7)
son4ous [18]

Answer:

The line which has slope 1/3 is a shallow line.

The line which has slope 2 is a steep line.

Both are increasing.

Step-by-step explanation:

Compare the lines by finding the slope between each pair of points.

Using the slope formula, substitute the points.

m = \frac{y_2-y_1}{x_2-x_1} = \frac{4-2}{6-0} = \frac{2}{6} = \frac{1}{3}

m = \frac{y_2-y_1}{x_2-x_1} = \frac{7-1}{5-2} = \frac{6}{3} = 2

The line which has slope 1/3 is a shallow line.

The line which has slope 2 is a steep line.

6 0
3 years ago
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