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Sauron [17]
3 years ago
8

Find the sum or difference 1/2 (2r + 4) - 1/4 (16 - 8r)

Mathematics
1 answer:
satela [25.4K]3 years ago
3 0

Answer:

= 3r - 2

Step-by-step explanation:

would you like an explanation or are you fine!

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The volume of the following solid figure could be found by multiplying the area of its circular base by the height of the cone.
Tems11 [23]

Answer:

its false

Step-by-step explanation:

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3 0
3 years ago
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Mary stated that 2.01 x 10⁶ is less than 4.8 x 10⁴ because 2.01 is less than 4.8. what was mary's mistake ?
katrin [286]

Answer:

Step-by-step explanation:

Scientific notation is always written as a number between 1 and 9.9999999 repeating. There follows a power of 10. I'm not sure which answer would help you see it clearer but

4.8 * 10^4 the decimal is shifted 4 places the right which is 48000 where you have no numbers, you use zeros.

2.01 * 10^6 means that you shift the decimal 6 places to the right.

2010000

So 2 million is larger than 48 thousand.

The other way to do it is just to look at the power. 6 is more than 4. 6 describes the number of places you move. So does 4. 6>4 so that's the larger number.

4 0
4 years ago
Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of
seropon [69]
The correct answer is C. (5x+3) feet, and here is how I got it.
This is the equation you need to use:
(a+b)^2 = (a+b) (a+b)
So, let us plug in 5x and 3 here:
(5x+3)^2 = (5x+3)(5x+3) = 25x^2 + 15x + 15x + 9 = 25x^2 + 30x + 9 which is the area of the garden. 
5 0
3 years ago
I need help on this question
max2010maxim [7]
Answer A
21 mm
7 x 3 = 21
4 0
3 years ago
A chemist needs a solution of tannic acid 70% pure. How much distilled water must he add to 5 gallons of acid which was 90% pure
Alborosie
30; If you add and subtract these numbers you should get 30%
6 0
4 years ago
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