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Pani-rosa [81]
3 years ago
13

Find cos x if sin x cot x = 0.5

Mathematics
1 answer:
vova2212 [387]3 years ago
7 0

Answer:

cos x = 0.5

Step-by-step explanation:

cot x  = (cos x) / (sin x)

sin x (cot x) = 0.5

cos x = 0.5

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The half life of a radioactive substance is 10 years. If 64 grams are placed in a
geniusboy [140]

Answer:

2 grams

Step-by-step explanation:

50 years is 5 half lives as 1 half life is 10 years.

64 divide 2 = 32-1 half life

32 divide 2 =16-2nd half life

16 divide 2 = 8-3rd half life

8 divide 2 = 4-4th half life

4 divide 2 = 2-5th half life

This means we will have 2 grams left of the radioactive substance after 50 years.

7 0
3 years ago
Which of the following could represent the question: How many 4/9s are in 6/5 as a multiplication equation?
just olya [345]

Answer:

Step-by-step explanation:

I am pretty sure it’s 4/9 * 6/5 = x

( I think it’s this )

3 0
3 years ago
Find the area of this figure
kherson [118]

Step-by-step explanation:

well, I see one large rectangle (20×6), and 2 small triangles with their horizontal sides being (20-8-6)/2 = 3 m. and their vertical joined side being 10-6 = 4 m.

the total area is simply the sum of the rectangle and the 2 triangles.

the rectangle is

20×6 = 120 m²

each triangle is

4×3/2 = 2×3 = 6 m²

we have 2 of them, so their combined area is 2×6 = 12 m².

the total area is

120 + 12 = 132 m²

7 0
2 years ago
Please help!!!!I will give Thanks and Brainliest
BaLLatris [955]
A=R, B=S, C=P, and D=Q
hope this helps!
6 0
3 years ago
Read 2 more answers
The diagram represents a flower border that is 3 feet wide surrounding a rectangular sitting area. Write an expression in factor
Alexeev081 [22]

Answer:

3* (36 - 5x)

Step-by-step explanation:

The total area of the flower garden is equal to the surface of the rectangle that encloses the flowers border and the sitting area minus the area of the sitting area.

Rectangle area

Three flower segments height ----  9  feet

4 flower segments length  ----------- 12 feet

Rectangle area = 12*9 ft^2  = 108 ft^2

Sitting area

Sitting area = 3x*5 = 15x

Area of the flower border (A_flwb)

A_flwb = 108 ft^2 - 15x = 3* (36 - 5x)

4 0
3 years ago
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