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SOVA2 [1]
4 years ago
12

Express the result in scientific notation. (8.25 * 10^11) (2.5 * 10^4)

Mathematics
1 answer:
Katyanochek1 [597]4 years ago
4 0

Answer:

1)8.25 e 11

2)2.5 e 4

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at farm the ratio of cows to horses was 10:3if there were 20 cows at the farm how many horses were there
Lubov Fominskaja [6]
If you think the cows are doubled so if you double the amount of horses  so the ratio is 10:3 so 20:6 is the new ratio the answer would be 6 horses
7 0
4 years ago
The figure is a parallelogram.one diagonal measures 28 units. Is the figure a rectangle? Explain
guajiro [1.7K]

Answer:

The parallelogram is not rectangle because the sides of the parallelogram do not meet at right angles.

Step-by-step explanation:

Given the parallelogram with sides 20 and 21 units with diagonal length 28 units.

we have to tell it is a rectangle or not.

The given parallelogram is rectangle if the angle at vertices are of 90° i.e the two triangle formed must be right angles i.e it  must satisfy Pythagoras theorem

28^{2}=20^{2}+21^{2}

784=400+441=881

Not verified

∴ The sides of the parallelogram do not meet at right angles.

Hence, the parallelogram is not rectangle because the sides of the parallelogram do not meet at right angles.

Hope it helps

Mark as brainliest

5 0
4 years ago
How to solve<br><br> 3sin^2x= cos^2x
DochEvi [55]

I'll try it.
I just went through this twice on scratch paper.  The first time was to
see if I could do it, and the second time was because the first result
I got was ridiculous.  But I think I got it.

You said                                                 <span><u>3sin²(x) = cos²(x)</u>

Use this trig identity:  sin²(x) = 1 - cos²(x)   

                                   Plug it into the original equation for (x).

                                                     3(1 - cos²(x) )  =  cos²(x)

Remove parentheses on the left:    3 - 3cos²(x)  =  cos²(x)

Add  3cos²(x)  to each side:            3                  =  4cos²(x)

Divide each side by  4 :                  3/4  =  cos²(x)

Take the square root of each side:    <em>cos(x) = (√3) / 2</em> .

There it is ... the cosine of the unknown angle.
Now you just go look it up in a book with a table cosines,
or else pinch it through your computer or your calculator,
or else just remember that you've learned that

                           cos( <em><u>30°</u></em> )  =  </span><span><span>(√3) / 2 </span>.


</span>
7 0
4 years ago
Matt has 20 marbles in a bag. 15 are red, 2 are blue, and 3 are green. what is the probability that Matt will pick a blue marble
marta [7]
Answer=10%

15+2+3=20
2 of which are blue.
Put it over 100, 20x5=100 so 2x5=10
4 0
4 years ago
Read 2 more answers
Write a word problem that can be solved by multiplying a whole number and a fraction. Include the solution.
adelina 88 [10]

Answer:

Sheila had 24 cupcakes, she gave 1/3 of them to Caleb. How many cupcakes did she give to Caleb?

Step-by-step explanation:

24 x 1/3 = 8

She gave 8 cupcakes to Caleb.

8 0
2 years ago
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