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labwork [276]
3 years ago
13

Which system is equivalent to

Mathematics
2 answers:
Kaylis [27]3 years ago
8 0

Answer:

d

Step-by-step explanation:

sammy [17]3 years ago
6 0

<u>Answer:</u>

D) 6x^2 - 8y^2 = 50

-6x^2 - 2y^2 = 11

<u>Step-by-step explanation:</u>

We are given the following two expressions:

3x^2-4y^2=25

and

-6x^2-2y^2=11

Now if we look at the option D) 6x^2 - 8y^2 = 50&#10; and -6x^2 - 2y^2 = 11, we can observe that the earlier part in the given expression is just a simplification of 6x^2 - 8y^2 = 50.

6x^2 - 8y^2 = 50\\\\2(3x^2-4y^2) = 50\\\\3x^2-4y^2 = \frac{50}{2} \\\\3x^2-4y^2=25

and the later part -6x^2 - 2y^2 = 11 is already the same.

Therefore, the correct answer option is D)  6x^2 - 8y^2 = 50

-6x^2 - 2y^2 = 11.

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Lostsunrise [7]
The answer is 8.82 because if you divide 882 by 100 it gives you 8.82
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3 years ago
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In triangle ABC angle "A" equals 92° and "C" equals 24°. Whats the exterior angle of "B"?
garik1379 [7]
Hey there! :D

All angles in a triangle equal 180 degrees. An exterior angle is supplementary to the interior angle next to it. (also equal to 180 degrees) 

92+24+<B= 180

116+<B= 180

Subtract 116 on both sides. 

<B= 64

So, 

180-64= 116 

The exterior angle of <B is equal to 116 degrees. 

I hope this helps!
~kaikers
6 0
3 years ago
Sara Blake's grandmother gave her $3000.00 to save for college. She put it in a savings account that earns 6% interest per year.
zubka84 [21]
I assume you are looking for the total. The total amount in the account will be $4,781.54 if the interest is compounded annually.

If she is earning 6% interest, the balance in her account will be multiplied by 1.06 each year.

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6 0
4 years ago
Change the subject of the equation v = u + at to a.
emmasim [6.3K]
<h3>Answer ↓</h3>

<h3>Calculations ↓</h3>

In order to make a the subject of this equation , we need to get a by itself .

The current equation is :

v = u + at

Subtract u on both sides :

v-u=at

Now, divide by t on both sides :

v-u/t=a

<h3>So the formula looks like ↓</h3>

\boxed{\\\begin{minipage}{3cm}Equation \\ a=$\displaystyle\frac{v-u}{t} $ \\ \end{minipage}}

hope helpful ~

8 0
3 years ago
Maribel has $1.25 in her pocket. The money is in quarters and dimes. There are a total of 8 coins. How many quarters and dimes d
Temka [501]
0.25q + 0.10d = 1.25
q + d = 8....q = 8 - d

0.25(8 - d) + 0.10d = 1.25
2 - 0.25d + 0.10d = 1.25
-0.25d + 0.10d = 1.25 - 2
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d = -0.75/-0.15
d = 5 <=== there are 5 dimes

q + d = 8
q + 5 = 8
q = 8 - 5
q = 3 <=== there are 3 quarters
3 0
3 years ago
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