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Nimfa-mama [501]
4 years ago
15

Solve for x and y. please, i'll give brainiest. i really need help!

Mathematics
1 answer:
Hitman42 [59]4 years ago
3 0
X= 7

Y= 8

Let me know if you need an explanation
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Which statement is true
weqwewe [10]
The answers are
a) the domain is all real numbers
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5 0
3 years ago
Find the sum of the series and show your process for finding each term leading to the final sum.
Harrizon [31]

Answer:

\sum_{k=3}^5(-2k+5)=-9

Step-by-step explanation:

The given series is:

\sum_{k=3}^5(-2k+5)

The series is not very lengthy so we can write the expanded form;

\sum_{k=3}^5(-2k+5)=(-2(3)+5)+(-2(4)+5)+(-2(5)+5)

This implies that;

\sum_{k=3}^5(-2k+5)=-1+-3+-5

\sum_{k=3}^5(-2k+5)=-9

5 0
3 years ago
The mean of 7 numbers is 15. When an 8th number is added the mean decreases to 12. What is the 8th number?
ale4655 [162]

Answer:

The 8th number is -9

Step-by-step explanation:

With an average, the sum of the seven numbers divided by 7 is 15.

In order to add an 8th number, we set up

\frac{7*15+x}{8}=12\\105 + x = 96\\x = -9\\\\\frac{105-9}{8}=\frac{96}{8}=12

3 0
4 years ago
In circle o, diameter AB, chord BC, and radius OC
natita [175]
I think it's the 180 one
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3 years ago
Explain the process of solving an equation for a certain variable.
slega [8]

Answer:

Step-by-step explanation:

Typically when solving an equation with one variable, your objective is to isolate the variable on one side of the equation. This can be done adding/subtracting number to cancel them out on one side. You can also multiply/divide coefficients in order to isolate a variable.

8 0
3 years ago
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