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olganol [36]
3 years ago
6

What is i hcf of 21 and 28

Mathematics
2 answers:
olchik [2.2K]3 years ago
7 0
21|3 \\ 7 \ |7 \\ 1 \\\\ 21=3*7 \\\\ 28|2 \\ 14|2 \\ 7 \ |7 \\ 1 \\\\ 28=2^2*7 \\\\ H.C.F(21;28)\to\boxed{7}
alexira [117]3 years ago
5 0
The factors of  21  are  1,  3,  7, and  21 .

The factors of  28  are  1,  2,  4,  7,  14, and  28 .

The factors common to both numbers are  1  and  7 .

The greatest one is <em> 7</em>.
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Nicholas drew a triangle with 45, 35, and 100 degree angles. Is there another triangle with the same three angles but different
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Answer:

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Step-by-step explanation:

we know that

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therefore

There are infinite triangles with the same three angles but different side lengths

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What three numbers can you multiply to get 24?
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Read 2 more answers
Find the average value of f over region
yan [13]
The area of D is given by:

\int\limits \int\limits {1} \, dA = \int\limits_0^7 \int\limits_0^{x^2} {1} \, dydx  \\  \\ = \int\limits^7_0 {x^2} \, dx =\left. \frac{x^3}{3} \right|_0^7= \frac{343}{3}

The average value of f over D is given by:

\frac{1}{ \frac{343}{3} }  \int\limits^7_0  \int\limits^{x^2}_0 {4x\sin(y)} \, dydx  = -\frac{3}{343}  \int\limits^7_0 {4x\cos(x^2)} \, dx  \\  \\ =-\frac{3}{343} \int\limits^{49}_0 {2\cos(t)} \, dt=-\frac{6}{343} \left[\sin(t)\right]_0^{49} \, dt=-\frac{6}{343}\sin49
3 0
3 years ago
Refer to the figure to the right.
Law Incorporation [45]

Step-by-step explanation:

Use arc length:

s = rθ

where r is the radius and θ is the angle in radians.

a) First, convert the angle to radians (1 degree = 60 minutes).

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s = rθ

s = (9.67 in) (1.358 rad)

s = 13.1 in

b) s = rθ

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θ = 23.7°

θ = 23° 42'

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3 years ago
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GrogVix [38]
Addition is the correct answer.

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3 years ago
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