MATHEMATICS MIDDLE SCHOOL

Solve the system of linear equations by substitution y=x-4
y=4x-10

Solution: ( , )

Answers

Answer 1

Answer:

The value of the x is 2 and y is -2.

Given that,

The system of equation is;

$\rm y=x-4\n\ny=4x-10$

We have to determine

The value of x and y by using the substitution method.

According to the question

The system of equation is;

$\rm y=x-4\n\ny=4x-10$

Substitute the value of y from equation 1 to equation 2

$\rm y = x-4\n\n4x-10=x-4\n\n4x-x=-4+10\n\n3x=6\n\nx = (6)/(3)\n\nx=2$

Substitute the value of x in equation 1

$\rm y = x-4\n\ny = 2-4\n\ny = -2$

Hence, The value of the x is 2 and y is -2.

To know more about the Substitution Method click the link given below.

s://brainly.com/question/15683891

Answer 2

Answer: There is the equal values method, so you can do:

x-4 = 4x-10 (remove x from both sides)
-4 = 3x -10 (add ten to both sides)
6 = 3x (devide by 3x)
2 = x

Check: (by plugging it into the equation)
y = 2-4 and y = 8-10
y = -2 and y = -2
that's matches so it is correct...
YOUR ANSWER IS:
(2, -2)

I hoped I helped sort things out, and have a great day!

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Answers

8 = 3 / x , this is your equation , 8 and 3 where the only numbers , your question is kinda hard to comprehend

Answer:

8 = 3 / x

Step-by-step explanation:

How to solve this math question?

Answers

To find the length of side HJ, we need to use sine, as we're looking for the length of the side that is opposite to the side where we have an angle measure.

Sin(70*) = x/13

Sin(70* = 0.94) = x/13

Multiply both sides by 13.

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The side HJ is equal to 12.21.

Multiply (2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20). Express the answer in scientific notation. 6.2 ⋅ 10−80 6.2 ⋅ 10−24 6.2 ⋅ 1024 6.2 ⋅ 1080

Answers

scientifice notation is
(number less than 10 but greater than or equal to 1) times (10^x)

remember
(ab)(cd)=abcd=(ac)(bd)

and
(x^m)(x^n)=x^(m+n)

so
(2*10^4)(3.1*10^20)=
(2)(10^4)(3.1)(10^20)=
(2*3.1)(10^4*10^20)

(10^4)(10^20)=10^(4+20)=10^(24)

(6.2)(10^24)

scientifie notiaotn is
6.2*10^24

2d option

(2,0 * 10⁻⁴) * (3,1 *10⁻²⁰) =

the order of multiplication factors not relevant

2,0 * 3,1 * 10⁻⁴ * 10 ⁻²⁰ =

6,2 *10 ⁻⁴ ⁺⁽⁻²⁰⁾ = 6,2⁻²⁴

A rectangle is 5 units long. The rectangle is also 3 units wide. What is its perimeter?

Answers

5+5+3+3= 16
(5x2)+(3x2)=16

you add 5+3 (=8)and multiply your by two (8*2=16 units)

43 and 962 ten thousandths in standard form?

Answers

43.962

Example:
14,494
To round off the height value to the nearest thousand we can use the expanded from to clarity the position of numbers which is:
10, 000 = ten thousand
4, 000 = thousands
400 = hundreds
90 = tens
4 = ones
Here we can notice than four thousand is the value where the nearest thousands is placed. Hence we can round off the number of 14, 494 into 14, 000. Notice 0-4 rounding off rules.

There are (3^2)4 ⋅ 3^0bacteria in a petri dish. What is the total number of bacteria in the dish?