Answer:
Tina is 12 and MIna is 15
Step-by-step explanation:
Age problems can often be worked by backing out any of the changes in age so as to match the conditions specified at a given time.
Here, the ratio is given for now. The sum of the two ages is 6 years less now than it will be after 3 years, so is now 33 -6 = 27.
The sum of ratio units now is 4+5 = 9, so each ratio unit stands for 27/9 = 3 years of age. The ratio of current ages is ...
3×4 : 3×5 = 12 : 15
Tina is 12 and MIna is 15.
_____
<em>Check</em>
After 3 years, their ages will be 15 and 18, which will total 33.
Answer:
34.35 mg.
Step-by-step explanation:
We have been given that a radioactive substance decays exponentially. A scientist begins (t=0) with 200 milligrams of a radioactive substance, where the variable t represents time (in hours). After 24 hours, 100 mg of the substance remain.
We know that an exponential decay function is in form 
, where,
A(t) = Final amount,
a = Initial value,
b = Decay rate,
t = time.
For our problem initial value (a) is 200, final amount is 100 and time is 24.
Let us solve for b.
So our required function is 
.
Substitute 
in above equation:
Therefore, 34.35 milligrams of substance will remain after 37 hours.
Answer:
WV = 169.591 feet
Step-by-step explanation:
As VWX has ∠X equal to 90°, so that it is the right triangle.
In the right triangle, there is a formula as following:
sin <em>acute angel = opposite side/ hypotenuse side</em>
So that, in triangle VWX:
+) <em>sin ∠W = XV / WV </em>
as ∠W =20° and XV is equal to 58 feet, replace it into the formula above, we have:
sin ∠W = sin 20° = 58/ WV
=> WV = 58/ (sin 20°)
sin 20° ≈ 0.342
=> WV ≈ 58/ 0.342 = 169.591 feet
Answer:There can be more than one mode
Step-by-step explanation
1. The mode is the number that occur more frequently in a given set of numbers.
2. It is true that there can be more than one mode. This is so because more than one number can occur more frequently in a given set of numbers.
For example: In the example below 2 and 3 are the modes.
1, 2, 4, 2, 3, 7, 3
Answer:
oilve earned $1104
Step-by-step explanation:
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