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ohaa [14]
3 years ago
15

Solve by substitution

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
6 0
The answer is (5,20)
Goshia [24]3 years ago
3 0
Answers is
x=5 y=20 (5,20)
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SOMEONE HELP ME PLEASE!
kenny6666 [7]

Answer:

d line 1 and 3

Step-by-step explanation:

3 0
3 years ago
PLEASE EXPLAIN THIS<br> PLZ HELP<br> THX:)
nikdorinn [45]
Binomial
Bi means two. So you have 2 terms in a binomial. x^2 + 2 is a binomial. In this example, they cannot be added.  There is one sign between the 2 terms. In this case a plus sign.
You have a binomial in the question's table. It is 3x - 9. 2 terms 1 sign.

Trinomial
Tri means three. You have 3 terms in a trinomial. You normally have 2 signs (at least) but you could have 3. All the terms are unlike.
x^2 + 2x - 1 is a a trinomial.
You have 1 trinomial in your question. 
y = - 3x^2 - 6x + 9 
This has 3 signs which is not normal but it is not unique.

Monomial
Mono means one. You have two monomials in your question.
2x^2 and - 2 Yes a constant can be a monomial.

Quadratic.
A quadratic has very specific properties.
The highest power of a quadratic must be x^2.
x^2 + 3x + 2 is a quadratic.
3x^2 - 4x + 2 is a quadratic.
-2x^2 - 5x + 3 is a quadratic.
x^2 + 5 is a quadratic.
- 2x^2 is a quadratic.

A quadratic may or may not have a linear term as in 3x
A quadratic may or may not have a constant term [yet to be defined]

Linear 
A linear equation must have 1 on the variable on both sides of the equal sign.
y = 3x is linear
y = 3x + 7 is linear.
y + 3 = 3x + 2 is linear. The 3 can be put on the right by subtracting 3 from both sides.
y = 2x - 1
y= 3x - 9 is a linear equation.
When you graph 3x - 9 you get a straight line.
y = 3x - 9, you get a straight line. Go to desmos and try it.

Constant.
Has no variables associated connected to it although a line can consist of a constant on one side.
3 is a constant. 
34 is a constant.
y = 8 is constant. It is a line that is parallel to the x axis going through 8.
0 is a constant.
y = 0 is the x axis.

Exponential
is a constant raised to a variable power.
y = 3^x. You don't have one of these.

Naming by power.
You have two equations that are raised to the power of 2.
One is the first monomial
the second is the last one.

One has a power going to 1 ( the third one)

What's the power on the constant.


8 0
3 years ago
Read 2 more answers
The price of a necklace was increased by 10% to £121. <br> What was the price before the increase?
viktelen [127]

Answer:

£108.90

Step-by-step explanation:

121 \times 10\% \\  = 121 \times 0.10 \\  = 108.90

4 0
3 years ago
The equation of the line in slope intercept is y-mx + b where m is y intercept?
barxatty [35]

Answer:

False

Step-by-step explanation:

B is the y-intercept.

7 0
3 years ago
Find the value of 15 - 8 ÷ 2.
Len [333]
Simplify 8 divided by 2 to 4. (15 - 4)

And simplify.

Or easier u can just divide 8 and 2 and u get 4 since 2 x 4 = 8 and now that u got 4, u subtract it with 15 and 15 - 4 = 11 and that would be your answer.

Answer: 11


7 0
3 years ago
Read 2 more answers
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