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pychu [463]
3 years ago
8

A dinner bill of $31.37 had 6% tax added to that total

Mathematics
2 answers:
rosijanka [135]3 years ago
3 0
Is there a question to the problem
My name is Ann [436]3 years ago
3 0
33.25 is the answer.
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Solutions to this quadratic<br> F(x) = x^2 + x - 2
dybincka [34]

Answer:

x = -2 & x = 1

Step-by-step explanation:

4 0
3 years ago
PLEASE PLEASE HELP ME OUT ITS URGENT <br><br><br> What are the solutions to the quadratic equation?
mixer [17]

Answer: Choice C)  x = 4\pm2\sqrt{10}

This is the same as saying x = 4+2\sqrt{10} \ \ \text{ or } \ \ x = 4-2\sqrt{10}

=============================================================

Explanation:

First get everything to one side

x^2 + 13 = 8x + 37

x^2 + 13 - 8x - 37 = 0

x^2 - 8x - 24 = 0

Here we have a quadratic in the form ax^2+bx+c = 0

Note how a = 1, b = -8, c = -24

Those values are plugged into the quadratic formula below

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-8)\pm\sqrt{(-8)^2-4(1)(-24)}}{2(1)}\\\\x = \frac{8\pm\sqrt{160}}{2}\\\\x = \frac{8\pm\sqrt{16*10}}{2}\\\\x = \frac{8\pm\sqrt{16}*\sqrt{10}}{2}\\\\x = \frac{8\pm4*\sqrt{10}}{2}\\\\x = \frac{2(4\pm2\sqrt{10})}{2}\\\\x = 4\pm2\sqrt{10}

This shows the answer is choice C.

The plus minus breaks down that equation these two solutions

x = 4+2\sqrt{10} \ \ \text{ or } \ \ x = 4-2\sqrt{10}

6 0
3 years ago
Read 2 more answers
In the figure shown the sum of the measures yxz and wxv is 75 degrees . what is the measure of zxw​
ella [17]

Answer: 105 = WXZ

Step-by-step explanation:

180 = WXZ + 75

subtract both sides by 75 and you get WXZ is equal to 105

I'm not 100% sure, lmk if I'm wrong

7 0
3 years ago
Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.
lukranit [14]
The answer is B) 0.09
4 0
3 years ago
Read 2 more answers
3. Tom, Sam and Matt are counting drum beats.
just olya [345]

Answer:

<em>When 60 beats are heard, Tom hits 15 snare drums, Sam hits 6 kettle drums, and Matt hits 5 bass drums.</em>

Step-by-step explanation:

The Least Common Multiple ( LCM )

The LCM of two integers a,b is the smallest positive integer that is evenly divisible by both a and b.

For example:

LCM(20,8)=40

LCM(35,18)=630

Since Tom, Sam, and Matt are counting drum beats at their own frequency, we must find the least common multiple of all their beats frequency.

Find the LCM of 4,10,12. Follow this procedure:

List prime factorization of all the numbers:

4 = 2*2

10 = 2*5

12 = 2*2*3

Multiply all the factors the greatest times they occur:

LCM=2*2*3*5=60

Thus, when 60 beats are heard, Tom hits 15 snare drums, Sam hits 6 kettle drums, and Matt hits 5 bass drums.

6 0
3 years ago
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