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Studentka2010 [4]
3 years ago
15

Consider the following system of equations. StartLayout Enlarged left-brace 1st row negative 10 x squared minus 10 y squared = n

egative 300 2nd row 5 x squared + 5 y squared = 150 EndLayout
Mathematics
2 answers:
lubasha [3.4K]3 years ago
5 0

Answer:

answer is D :)

Step-by-step explanation:

ziro4ka [17]3 years ago
4 0

These 2 equations has no solution and the equations are independent of each other.

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

-10x² -10y² = -300 ----a

5x² + 5y² = 150 ---- b

While trying to solve this,

We can multiply the eq. b by 2 so we will get eq. c and then add to eq. a we will get 0 as the solution.

10x² + 10y² = 300 ----c

-10x² -10y² = -300 ---a

Everything cutoff, we will get 0, and there is no solution to these equations.

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Two hundred and seventeen thousandths in decimal form
avanturin [10]

Answer:

0.217

Step-by-step explanation:

hope this helps. . .<3

good luck!    uωu

4 0
3 years ago
Read 2 more answers
Khan academy : Sasha has been saving the money she earns from babysitting for several months. She has a total of $96.75 dollar s
AVprozaik [17]

Answer:

$100.00

Step-by-step explanation:

If we are rounding to the nearest 10, then we only have to look at 96. Since 6 is bigger than 5, we round up to 100.

6 0
3 years ago
Kiyo bought a pizza for $12.75 and four medium drinks at Paola’s pizza. Define a variable and write an expression to represent t
Travka [436]
Y = total amount of money spent
x = cost of one drink

So our expression is:
4x + 12.75

4x stands for 4 drinks times x price of one drink
The 12.75 is a one time fee for the pizza, since Kiyo isn't buying multiple pizzas.

The problem also asks us to find the total price, so we write an equation:

y = 4x + 12.75
We insert what x is which in this case is $3
y = 4(3) + 12.75
Order of Operations tells us to multiply first:
y = 12 + 12.75
Now add your values:
y = 24.75
Therefore, Kiyo spent a total amount of 24.75 at Paola's pizza.

Let's check our problem just in case:

24.75 = 4x + 12.75
Since we now know what y is equal to, we can plug that into our original equation and check just to verify

We should subtract 12. on both sides of the equation because of inverse operations:

24.75 - 12.75  = 12.75 - 12.75 + 4x
We are left with:

12 = 4x
We divide:
\frac{12}{4}  =  \frac{4x}{4}
Our result is:
3 = x
Which checks out because each drink was in fact, $3 dollars as stated in the word problem. Hope that was thorough enough.


4 0
3 years ago
Which ratio is proportionate to 9/3​
Helga [31]

Answer:

3/1

simplify 9/3

3/1 is the answer

7 0
3 years ago
Which inequality is true? Use the number line to help.
jasenka [17]
C the third one

Step by step
6 0
3 years ago
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