All categories

3 years ago

X = y - 3

1 answer:

4 0

To solve this system of equations, start by plugging your equation for x wherever x appears in your second equation, giving you (y-3)+3y=13. Now, combine like terms, (y-3)+3y=13 => 4y-3=13, solve for y by adding 3, 4y-3=12 => 4y=16, divide by 4, 4y=16 => y=4. Now that you have your y value, plug it into the equation for x to get the x value, x=y-3=4-3=1. This makes your solution (1,4), answer choice A

You might be interested in

Lowest common multiple of 45 and 60

cupoosta [38]

Answer:

180

Step-by-step explanation:

why does it have to be 20 character long

3 0

3 years ago

6w^2 + 11w +8w^2 + 15w -2 and 14w^2 +26w-2 are the equivalent

Agata [3.3K]

Answer:

6w^2 + 11w +8w^2 + 15w -2

Get same power near,

6w^2 + 8w^2 + 11w + 15w -2

w^2 (6 + 8) + w(11 + 15) -2

14w^2 +26w-2

Yes equivalent

Step-by-step explanation:

5 0

3 years ago

14. Which equality decibes the function in the table below?

Amiraneli [1.4K]

Answer:

x times 2.5 = y

Step-by-step explanation:

3 0

3 years ago

Look at this expression, and complete the statement 3x+2(x+2)+4

Sindrei [870]

the answer is 3y+2x+8

5 0

4 years ago

Calculate s5 for the sequence defined by

pantera1 [17]

ANSWER

$S_5= 42.5$

EXPLANATION

The general term of the arithmetic sequence is

$a_n=1+\frac{5}{2}n$

For the first term,we substitute $n=1$ to get,

$a_1=1+\frac{5}{2}\times 1$

$a_1=1+2.5=3.5$

Similarly

$a_5=1+\frac{5}{2}\times 5$

$a_5=13.5$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(a_1+l)$

where l is the last term.
In this case

$l=a_5=13.5$

We substitute these values to get,

$S_5= \frac{5}{2} (3.5 + 13.5)$

$S_5= \frac{5}{2} (17)$
$S_5=42.5$

We could have also used the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

$S_5=\frac{5}{2}(2(3.5)+(5-1)2.5)$

$S_5=42.5$

3 0

4 years ago

Read 2 more answers