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Alex73 [517]
3 years ago
12

PLEASE HELP

Mathematics
1 answer:
Sati [7]3 years ago
3 0

Answer:

The answer is A, ab<cd.

Step-by-step explanation:

If a, b, c, d are positive, and if a b < c d , then Ab>cd is always true

You might be interested in
If 55% of a number is 132 and 25% of the same number is 60, find 80% of that number.
UNO [17]

Answer:

  192

Step-by-step explanation:

It is always wise to look carefully at the question to see what information is given, and what information you are asked for. You are given two different fractions of the same number, and you want the value of a third fraction of that number. That third fraction is the sum of the other two.

__

The value of 80% of the number will be the sum of 55% and 25% of the number.

  n×80% = n×55% +n×25%

  n×80% = 132 +60

  n×80% = 192

80% of the number is 192.

_____

<em>Additional comment</em>

Your first clue that there may be something special about this problem lies in the fact that one fraction of a number is all you need in order to find any other fraction. Here, we're given two fractions (55% and 25%), so that is more information than we need. Why? Because it simplifies the problem to one of addition. No proportions need to be solved.

__

If you were interested, you could determine 100% of the number to be ...

  132/n = 55/100   ⇒   n = 132(100/55) = 240

or

  60/n = 25/100   ⇒   n = 60(100/25) = 240

Then ...

  0.80n = 0.80(240) = 192 . . . . 80% of the number

Or, you could write proportions for the 80% value:

  80%/55% = n/132   ⇒   n = 132(80/55) = 192 . . . . 80% of the number

  80%/25% = n/60   ⇒   n = 60(80/25) = 192 . . . . 80% of the number

__

"Look carefully" includes thinking about the ways the <em>givens</em> and the <em>finds</em> are related.

4 0
2 years ago
What is the equal to 3^3.3^5 A. 3−2 B. 32 C. 38 D. 315
lora16 [44]
3^3 \cdot 3^5 = 3^{3+5} = 3^8\\\\\boxed{\bf{C)~3^8}}\\\\\\a^b \cdot a^c = a^{b+c}
3 0
3 years ago
The length of a rectangle is 22 feet longer than the width. the perimeter is 1616 feet. find the dimensions of the rectangle.
NemiM [27]
So we can setup variable equations for this:
so we're given that the length is 22feet longer than the width!
so as an expression length is equal to 22+w
and width as an expression is just w
so the formula for the perimeter for a rectangle is 2l+2w=perimeter
so fill it in now!
1616=2(22+w)+2w
1616=44+2w+2w
1616=44+4w
1572=4w
divide by four..
w=393
and length is simply 22 more than that as stated in the question!
so length is 415
dimensions are: 415x393
7 0
3 years ago
Find the range and the interquartile range for 28,29,33,28,27,32,30,27
AfilCa [17]

Answer:

33 - 27 =<u> </u><u>6</u>

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve ln 3 + ln (4x) = 4 round your answer to the nearest hundredth
Drupady [299]
Rewrite the equation in exponential form, use the definition of a log and then simplify and you should get x= e^4/12 or 4.55
3 0
3 years ago
Read 2 more answers
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