MATHEMATICS HIGH SCHOOL

Solving systems by elimination:2x + 4y = -4
3x + 5y = -3

Please show me your work so I can do the rest myself. Thanks!

Answers

Answer 1
Answer: 2x+4y=-4 (/*3)
3x+5y=-3 (/*(-2)) \Rightarrow

6x+12y=-12
-6x-10y=6 \Rightarrow

2y=-6\Rightarrow y=-3
y=-3\Rightarrow 2x+4y=-6\rightarrow 2x+4.(-3)=-6 \Rightarrow 2x-12=-6\Rightarrow
2x=6\Rightarrow x=3

(x,y)=(3,-3)
Answer 2
Answer:

Answer:

222

Step-by-step explanation:

2x+4y=-4

3x+5y=-3------>  y=-3x-3

                                  5

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Use the Factor Theorem to determine whether the first polynomial is a factor of the second polynomial. x - 5; 3x2 + 7x + 40

The rational and the irrational numbers together are called whole numbers. true or false
​

Answers

the answer is false

Step-by-step explanation:

natural numbers and zero are whole numbers

The answer is false

Does anybody know the answer to this question please I need help?!

Answers

Answer:

Juan earns 10 dollars a week at his job

Step-by-step explanation:

Need help please....

Answers

To solve this or to simplify it simply divide both the top and bottom terms. In the quotient.

By dividing each term with the correct similar variable, you can simplify the expression.

2x - 3y would be the final answer.







Square root of -25 in imaginary form

Answers

remember
√(mn)=(√m)(√n)

and
√-1=i

√-25=(√-1)(√25)=(i)(5)
aswer is +/-5i
root (-25) = root(-1) * root(25) 
in imaginary form we know that root(-1) = i 
so root(-25) = 5 i 

Solve for y: R (6x-11)° (9y-19)° (4x+23)°​

Answers

Answer:

y = 12

Step-by-step explanation:

We first need to solve for x

(6x - 11)° and (4x + 23)° are vertically opposite angles and are congruent, so

6x - 11 = 4x + 23 ( subtract 4x from both sides )

6x - 4x - 11 = 4x - 4x + 23 ( simplify both sides )

2x - 11 = 23 ( add 11 to both sides )

2x - 11 + 11 = 23 + 11 ( simplify both sides )

2x = 34 ( divide both sides by 2 )

(2)/(2) x = (34)/(2) , that is

x = 17

Then

4x + 23 = 4(17) + 23 = 68 + 23 = 91

(9y - 19)° and 91 are a linear pair and sum to 180°

sum the 2 angles and equate to 180

9y - 19 + 91 = 180 ( simplify left side )

9y + 72 = 180 ( subtract 72 from both sides )

9y + 72 - 72 = 180 - 72 ( simplify both sides )

9y = 108 ( divide both sides by 9 )

(9)/(9) y = (108)/(9) , that is

y = 12

What do you get if you multiply 9.1 and 8.31​

Answers

Answer:

10.98

Step-by-step explanation:

the answer to 9.1×8.31 is 10.98
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