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Karolina [17]
2 years ago
5

The half-life of a radioactive kind of rhythium is 1 year. If you start with 64 grams of it, how much will be left after 3 years

​
Mathematics
1 answer:
finlep [7]2 years ago
5 0

Answer:

Step-by-step explanation:

64×0.5³ = 8 grams

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Write the equation in point-slope form of the line that passes through (1, 4) and has a slope of 4/3
suter [353]

Answer:

y - 4 = (4/3)(x - 1)

Step-by-step explanation:

point slope form is

y - y1 = m(x - x1)

m is the slope

(x1, y1) is a point on the line

----------------------------

for m = 4/3 and (x1, y1)  = (1, 4)

y - 4 = (4/3)(x - 1)

6 0
2 years ago
What is $5,158 round to the nearest percent
Gemiola [76]
I think it 5,158.00 round to the nearest percent
7 0
3 years ago
The sum of Two numbers is 9. The<br> sum of the squares of the numbers is<br> 41. Find the numbers.
Tju [1.3M]

Answer:

4 and 5

Step-by-step explanation:

Assuming your 2nd sentence should be: "The sum of the squares of the two numbers is 41"

X + Y = 9   {equation 1}

X² + Y² = 41  {equation 2}

from equation 1:  y = 9-x

Substitute that into equation 2

x² + (9-x)² = 41

x² + 81 - 18x + x²= 41

2x² - 18x + 40 = 0

We can factor out a 2

x² - 9x + 20 = 0

(x-5)(x-4) = 0

x = 5 or 4

checking

Your two numbers are 4 and 5

4² + 5² 

= 16 + 25

= 41

3 0
2 years ago
A line has the equation y = 1/3x - 5 . Find the equation of a parallel line passing through the point (3, 2).
denis-greek [22]

Answer: y=1/3x+1

Y needs to be changed in order to maintain parallelism.

Good Luck!

7 0
3 years ago
Read 2 more answers
The lengths of the sides of a triangle are 9​, 12​, and 18. Classify the triangle as​ acute, right, or obtuse.
Nataliya [291]

Answer:

Step-by-step explanation:

Use Pythagorean theorem.

Assign the largest value to 'c'

If a² + b² = c² , then it is right triangle

If a² + b² > c², then it si acute triangle

If a² + b² < c² , then it is obtuse triangle

Here, a = 9 , b = 12 & c = 18

a² + b² = 9² + 12²

           = 81 + 144

a² + b² = 225

c² = 18²

c² = 324

a² + b² < c²

225 < 324

So, 9, 12 , 18 form a obtuse triangle

5 0
2 years ago
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