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Eddi Din [679]
3 years ago
9

An element with a mass of 650 grams decays by 13.2% per minute. To the nearest minute, how long will it be until there are 220 g

rams of the element remaining?
Mathematics
1 answer:
Elis [28]3 years ago
3 0

Answer: 8

Step-by-step explanation:

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Let f(x) = x2 − 8x + 5. Find f(−1).
Westkost [7]
F(x) = x^2 - 8x + 5

f(-1) = -1^2 - 8(-1) + 5
f(-1) = 1 + 8 + 5
f(-1) = 14 <==
3 0
3 years ago
Read 2 more answers
this week luiz made 80% of what he made last week if he made $72 this week how much did he make last week?
kvv77 [185]

Answer: He made $90 last week.

Assumption :

Let, Luis made $X last week.

He made $72 this week which is 80% of $X that he made last week

⇒ X * 80% = 72

⇒ X * 80/100 = 72

⇒ X = (72 * 100)/80

⇒ X = 90

Therefore, he made $90 last week.

To remember :

While solving this type of problems, be careful to understand which one of last time and current time is not given; just assume that one and input other conditions, the problem will be solved.

8 0
2 years ago
Please solve this question in mathematics <br> 75*75+4543-8745/3.5
Harman [31]

Answer:

7669.42857

Step-by-step explanation:

3 0
3 years ago
I provided it in the picture, please help!
Goshia [24]
The answer would be D.
7 0
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What is the domain of the function y=2√x-6?<br> 88AX&lt;∞<br> O 0≤x&lt;∞<br> 3≤x&lt;∞<br> 6≤x&lt;∞
Travka [436]

Answer:

If the x-6 is all under the sqrt, the last answer is right:

6<= x <= infinity

If only x is under the sqrt and - 6 is NOT under the sqrt, then:

0 <= x <= infinity is the correct answer.

Step-by-step explanation:

You can look at the equation and or graph to determine the domain of a function. The domain is all the x's that may go into the equation or all the x's on the graph of the function. Inside of a squareroot symbol the number inside there must be positive. While considering the equation, only x's that keep that inside positive can be used.

For sqrt(x-6), x has to be 6 or bigger.

For sqrt(x) - 6, x has to be 0 or bigger.

6 0
2 years ago
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