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Nastasia [14]
3 years ago
11

HELP ME PLEASE I NEED TO PASS THIS

Mathematics
2 answers:
Lerok [7]3 years ago
8 0

Answer:

D

Step-by-step explanation:

matrix multiplication says you take the [x y] vector sideways (as is here) and mutliply by each row. So your top row is

3·x + -1·y  which equals 3x-y.

Since this is the top row of your solution,

3x - y = 8.

The bottom row is the same process.

1·x + 2·y = 5

x + 2y = 5

irga5000 [103]3 years ago
5 0

Answer:

i believe the answer is D

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What is the range of the function<br> f(x) = = 3x + 2 in the domain -2
djyliett [7]

Answer:

The range is:

{-4, 1, 2, 5, 8}

Step-by-step explanation:

Given the function

f(x)=3x+2

  • We know that the domain of a function is the set of input or argument values for which the function is real and defined.

As the domain interval -2 ≤ x ≤ 2

i.e. the values in the domain = {-2, -1, 0, 1, 2}

  • We also know that the range of a function is the set of values of the dependent variable for which a function is defined.

As the domain interval -2 ≤ x ≤ 2

Putting all the x-values in the domain interval in the function

so

putting x=-2 in the function

f(x)=3x+2

f(-2)=3(-2)+2=-6+2=-4

putting x=-1 in the function

f(x)=3x+2

f(-1)=3(-1)+2=-3+2=1

putting x=0 in the function

f(x)=3x+2

f(0)=3(0)+2=0+2=2

putting x=1 in the function

f(x)=3x+2

f(1)=3(1)+2=3+2=5

putting x=2 in the function

f(x)=3x+2

f(2)=3(2)+2=6+2=8

Thus, when we put the domain values, the corresponding range values are:

x           y

-2         -4

-1           1

0           2

1             5

2            8

Therefore, the range is:

{-4, 1, 2, 5, 8}

8 0
3 years ago
1. Divide using long division: -3x3 - 2x2 - x - 2 by<br>x -2.​
adell [148]

Answer:

-x^2+15x+2/x

Step-by-step explanation:

3 0
3 years ago
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How do You write 7 million in standard form
Pepsi [2]

Answer:

7,000,000

Step-by-step explanation:

6 0
3 years ago
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I'm not really good at math, but i would appreciate it if i can get some help with this math problem. 2y^3-4x^2-4-1+3x^2-3y^3-y^
SOVA2 [1]

Answer:

-2y^2 -x^2 -5

Step-by-step explanation:

Just simplify everything. I recomend putting them in seperate groups. By exponent. Don't forget the signs, they are very important.

3 0
3 years ago
-2x^(3) +3=-1x^(3) -1x^(2) +1x+1
Natali5045456 [20]
-2x³ + 3 = -x³ - x² + x + 1

Add x³ to both sides, and subtract 3 from both sides.

-2x³ + x³ = -x² + x + 1 - 3

Add like terms.

-x³ = -x²+ x - 2

Move all of the (X's) to both sides, by adding x² to both sides, and subtracting x form both sides.

-x³ + x² - x = -2

~Hope I helped!~
7 0
3 years ago
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