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katrin2010 [14]
2 years ago
8

Which of the ordered pairs in the form (x,y)is a solution of this equation?

Mathematics
1 answer:
e-lub [12.9K]2 years ago
5 0
A, the first one is a solution
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Earline has put $250 into her savings account.To do this,she made 10 deposits of the same amount.Write and solve a multiplicatio
Colt1911 [192]
Not sure if this is what your looking for but 25x10=250
5 0
3 years ago
Read 2 more answers
the following data values represent a population. what is the variance of the values? 17, 5, 11, 1, 11
Vladimir [108]
Variance = summation of (x - mean)^2 all divided by the number of dataset.
mean = (17 + 5 + 11 + 1 + 11)/5 = 9

Variance = [(17 - 9)^2 + (5 - 9)^2 + (11 - 9)^2 + (1 - 9)^2 + (11 - 9)^2]/5 = (8^2 + (-4)^2 + 2^2 + (-8)^2 + 2^2}/5 = (64 + 16 + 4 + 64 + 4)/5 = 152/5 = 30.4
4 0
3 years ago
How do I solve this out??
GuDViN [60]
<h3>Answer:</h3>

(x, y) = (7, -5)

<h3>Step-by-step explanation:</h3>

It generally works well to follow directions.

The matrix of coefficients is ...

\left[\begin{array}{cc}2&4\\-5&3\end{array}\right]

Its inverse is the transpose of the cofactor matrix, divided by the determinant. That is ...

\dfrac{1}{26}\left[\begin{array}{ccc}3&-4\\5&2\end{array}\right]

So the solution is the product of this and the vector of constants [-6, -50]. That product is ...

... x = (3·(-6) +(-4)(-50))/26 = 7

... y = (5·(-6) +2·(-50))/26 = -5

The solution using inverse matrices is ...

... (x, y) = (7, -5)

7 0
3 years ago
Write two shopping scenarios where multi-step equations can be written and solved.
Viefleur [7K]

Scenarios:

She went shopping on friday and spent 102.52$ and began with 201.24, and then on sunday she went again to shop and spent 58.2 and gave her friend 30.23$ to shop with. How much did she spend and how much does she still have.

Andrew went to the store and spent 403.54 on a PS4 and a 4 games, the PS4  costed 330.54 dollars, and the games all were the same price but the last game was 10$ more then the rest of the games, how much were the games?

Step-by-Step explanation:

3 0
3 years ago
Without using a calculator , determine between which two intergers does square root of 39 lie?​
Ivanshal [37]

Answer:

The square root of 39 is 6.245. It lies between the whole numbers 7and 8!

8 0
3 years ago
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