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2 years ago

What is i hcf of 21 and 28

Mathematics

2 answers:

olchik [2.2K]2 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]2 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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Step-by-step explanation:

Hey!

So mode is basically the most occurring number in the given data.

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so it will be- 1,1,2,2,3,7

Here the most frequently occurring is 1 and 2

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2 years ago

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The temperature dropped from 80°F to 70°F. what is the percent drop in temperature?

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If cos(θ)=2853 with θin Q IV, what is sin(θ)?

marysya [2.9K]

Answer: $\sin \theta=\frac{-45}{53}$

Step-by-step explanation:

Since we have given that

$\cos\theta=\frac{28}{53}$

And we know that θ is in the Fourth Quadrant.

So, Except cosθ and sec θ, all trigonometric ratios will be negative.

As we know the "Trigonometric Identity":

$\cos^2\theta+\sin^2\theta=1\\\\\sin \theta=\sqrt{1-\cos^2\theta}\\\\\sin \theta=\sqrt{1-(\frac{28}{53})^2}=\sqrt{\frac{53^2-28^2}{53^2}}\\\\\sin \theta=\sqrt{\frac{2025}{53^2}}\\\\\sin \theta=\frac{45}{53}$

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3 years ago

Smith can pick 115 strawberries in 5 minutes. How many strawberries can he pick per one minute?

defon

Answer:

Step-by-step explanation:

1) to find the difference you hve to to divide the amount of strawberries by 5, to see how many he picked in 1 minute

Therefore: 115/5 = 23

Aka, Smith picked/ can pick 23 strawberries per minute :)

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2 years ago

Virginia has a monthly budget of $1,900. If Virginia earns $11.00 per hour, and works 145 hours this month, will Virginia earn e

mart [117]

Answer:

no she will not

Step-by-step explanation:

145*11 < 1900

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