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grigory [225]
2 years ago
9

9. Rick borrowed $50 from his sister for 3 months (1/4 year). She charged him 14% interest. How much interest will Rick have to

pay to his sister?
Mathematics
1 answer:
True [87]2 years ago
5 0
-4x-6y+16. Thats the answer
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Beach ball has a diameter of 10 in what is the volume of air contained inside the beach ball
kicyunya [14]
The formula for volume of a sphere is \frac{4}{3}  \pi r^{3}
To get radius from diameter, we must divide it by 2. 10/2=5, meaning the radius is 5 in.
Now, we just need to plug the values into the equation.
\frac{4}{3}  \pi 5^{3} =  \frac{4}{3}  \pi 125 = 166.67 \pi = 523.61 in^{3}
5 0
3 years ago
Read 2 more answers
The roots of the equation 3x²-2x-4=0 are J and K. Evaluate J² + K².
melamori03 [73]

Answer:

28/9

Step-by-step explanation:

If the roots are J and K, then:

3 (x − J) (x − K) = 0

3 (x² − (J+K)x + JK) = 0

So if we factor out the leading coefficient:

3x² − 2x − 4 = 0

3(x² − 2/3x − 4/3) = 0

The coefficient of the second term is the sum of the roots:

J + K = 2/3

And the constant is the product of the roots:

JK = -4/3

If we take the sum of the roots and square it:

(J + K)² = (2/3)²

J² + 2JK + K² = 4/9

And subtract twice the product:

J² + K² = 4/9 − 2JK

J² + K² = 4/9 − 2(-4/3)

J² + K² = 4/9 + 8/3

J² + k² = 28/9

6 0
3 years ago
I need help with creating some equations for an assignment. These are the types of equations I need:
kondor19780726 [428]
Hi there!

Here are some examples for you:

Two one step equations:
6x = 36
y + 5 = 10

Two equations containing fractions:
1/2x = 4
3/4y + 1 = 8

One equation using the distributive property:
2(x + 5) = 3

One equation with a decimal:
2.5x + 5 = 10

One real world problem that is solved by an equation:
At the beginning, I had 5 cups of flour. I made a batch of cookies. Now, I have 3.5 cups of flour. How much flour did I use?
5 - x = 3.5

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
7 0
3 years ago
Read 2 more answers
When you graph an inequality, you used a closed dot when you use which<br> symbols?
aksik [14]
You use a closed dot with the greater than or less than with the line under the symbol or the greater than or equal to or the less than or equal to symbols. The line indicates a closed dot.
8 0
2 years ago
An angle measures 62° less than the measure of its complementary angle. What is the measure of each angle? (i need two answers p
postnew [5]

Answer:

28° 62°

Step-by-step explanation:

Hope this helps :)

8 0
2 years ago
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