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Sati [7]
3 years ago
8

Solve the system of equations using substitution. 4x + y = 32 y = 4x

Mathematics
2 answers:
Lynna [10]3 years ago
5 0

Answer:

(4,16)

Step-by-step explanation:

y=16 x=4

stellarik [79]3 years ago
4 0

Answer:

4x + y = 32

y = 4x

4x+4x=32

8x=32

x=4

y=16

Step-by-step explanation:

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Name the property of equality that justifies the statement: if a+b=c, then a=c-b
SashulF [63]
<span><span><span>1. a = b means a is equal to b.
2. a ≠ b means a does not equal b.Operations1. Addition: If a = b then a + c = b + c.</span></span><span><span>2. Subtraction: If <span>a = </span>b then a – c = b– c.
3. Multiplication: If a = b then ac = bc. 
<span>4. Division: If a = b and <span>c ≠ </span>0 then a/c = b/c.</span></span></span></span>
7 0
3 years ago
37​% of a certain​ country's voters think that it is too easy to vote in their country. you randomly select 12 likely voters. fi
Elenna [48]
Multiply 12 by 37%.
12 × 0.37 = 4.44

B) at least 4

It could also be c... 4.44 is less than 8. But B is the closest answer to 4.44.
4 0
3 years ago
PLEASE HELP ME!!!!!!!
Viefleur [7K]

Answer:

Step-by-step explanation:

x^2 + 2x = 6x+45

x^2 -4x -45 =0

x^2 - 5x +9x -45 =0

x(x-5) +9 (x-5)=0

(x-5)(x+9)=0

x = 5, -9

x = 5; measure of exterior angle = 5^2+2(5) = 35

x=-9; measure of exterior angle  = (-9)^2 + 2(-9) = 63

5 0
3 years ago
What is the percentage increase of a room that is the size of 96 square feet to a room that is 108 square feet?
katrin [286]

Answer:

12.5% increase OR 112.5% Percentage of Change

Step-by-step explanation:

For this problem consider that our original maximum value is 96 square feet, but our new maximum value is 108 square feet. So to find the change as a percentage (in this case the increase) use the following formula:

Percentage of Change = ( New Maximum / Old Maximum ) * 100

So, let's use this formula to find the percentage change of the room.

Percentage of Change = ( 108 / 96 ) * 100

Percentage of Change = (1.125) * 100

Percentage of Change = 112.5

So the percentage of Change is 112.5%. Note, the old maximum is the point of comparison which is 100%.

So to find the increase, we will do 112.5% - 100% to get 12.5%. Hence, we have a 12.5% increase of a 108 square foot room compared to a room of 96 square feet.

Cheers.

6 0
3 years ago
a number n when divided by 16 gives the remainder 5 is the remainder when the same number is divided by 8
Dmitry_Shevchenko [17]

If a number "n" gives a remainder of 5 when divided by 16, it will give a remainder of 5 when divided by 8.

As per the question statement, a number "n" gives a remainder of 5 when it is divided by 16.

We are required to calculate the remainder when "n" is divided by 8.

To solve this question, we need to know the relation between Dividend, Quotient, Divisor and Remainder.

[(Quotient * Divisor) + Remainder = Dividend]

Here, (Divisor = 16), (Dividend = "n"), (remainder = 5) and let our Quotient be "x".

Now, we will form a linear equation in one variable, based on the above mentioned relation between Dividend, Quotient, Divisor and Remainder and the conditions mentioned in the question statement, i.e.,

\frac{n-5}{16}=x\\ or, (16x+5)=n\\or, [2(8x)+5}=n\\or, [8(2x)+5]=n...(where "x" is any positive integer)

Assuming (2x = y), we get that

(8y+5)=n\\or, \frac{n-5}{8}=x

That is, the same number "n" will give a remainder of 5 when divided by 8.

  • Remainder: When a number cannot exactly divide another number, the left over amount is know as the remainder of that division.
  • Linear Equation: In Mathematics, a linear equation is an algebraic equation which when graphed, always results in a straight Line and thus, comes the name "Linear". Here, each term has an exponent of 1 and is often denoted as (y = mx + c)  where, 'm' is the slope and 'b' is the y-intercept.

To learn more about Remainder, click on the link below.

brainly.com/question/23148931

#SPJ4

7 0
2 years ago
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