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kow [346]
3 years ago
10

An element with a mass of 320 grams decays by 5.1% per minute. To the nearest tenth of a minute, how long will it be until there

are 200 grams of the element remaining?
Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0

Answer:

X=9

Step-by-step explanation:

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BRANLIEST IF CORRECT!!!!!
Anvisha [2.4K]

Answer:

2, 49, 63

Step-by-step explanation:

multiply x by 7 to get y

4 0
3 years ago
Read 2 more answers
A stable roommate problem with 4 students a, b, c, d is defined as follows. Each student ranks the other three in strict order o
Fantom [35]

Answer:

Each student ranks the other three in strict order of preference.

Step-by-step explanation:

When  4 different students from different background and personality lives together, there seems to be a room for the problems and stability between them. When the problem of stability arises, it would be as a result of the other 3 students ranking each other in strict order of preference regarding to their relationship and association.

4 0
3 years ago
Which graph represents the reflection in the x-axis of the curve y = cos x
Marat540 [252]

Answer: The first gragh

Step-by-step explanation:

The second and fourth are sine curves they don't count. Let's ignore them

The third one is y = - cos(x)

That leaves the first one.

Also remember that cos0 = 1

Please find the attached file for the graph.

7 0
4 years ago
Tax Rate Change: Suppose a certain tax rate goes from 6% to 18%. Which of the following statements is NOT true?
igor_vitrenko [27]

Answer:

The c statement is not true.

Step-by-step explanation:

We need to check every statement to determine which one is false.

a. The old tax rate was 6% and the new one is 18%. The difference between the new and the old one will give us how much it's been increased. So 18-6=12, meaning the tax has increased 12%, so this statement is true.

b. If we multiply by 3 the old tax rate we get 6x3=18, which is the same as the new tax rate, so this statement is also true.

c. Increasing the tax rate 100% would mean multiplying by 2, since 100% is the same as the number, so adding that to the same number would double the amount. By the same logic, increasing it 200% would be the same as multiplying it by 3, and by 4 with a 300% increase. Since we already determined that the new tax was 3 times the old one, this statement is false, and the d. statement is true.

4 0
4 years ago
Cutiepies for you :)) and btw THANK YOU FOR HELPING ME
ozzi

1) 20*3/5, use the rule a*b/c=ab/c

\frac{20*3}{5} =\frac{60}{5} =12

D is your answer

2) 1/5*8 =1.6, and 1.6 as a fraction is 1\frac{3}{5}

Just gonna show real quick how I converted this decimal into a fraction...

  • Split the number into its whole number component and decimal component, 1.6=1+0.6. .6=6/10, and 1 is a whole number, and 6/10 reduced is 3/5. So your answer is 1\frac{3}{5}.

3) Two thirds of 93 is 62, and you can word this as 2/3*93=62.

4) Three-fifths of 30 is 18, like the other problem, 3/5*30=18.

5) She has one liter cotainers and each of them are 2/3rds full. So to find how much sports drink is in 5 of the containers, you have to do 5*2/3=3\frac{1}{3}. You multiply 2/3 times 5 because each container has 2/3rds, and there are five containers.

Hope this helps, have a BLESSED and wonderful day, as well as a safe one!

-Cutiepatutie ☺❀❤

6 0
3 years ago
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