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3 years ago

What is 9 3/4 as a percent

2 answers:

7 0

975%
To find the answer to this problem and many more like it you first turn the mixed number into a fraction by multiplying the whole number (9) by the denominator (4), the add the numerator (3) ,(9*4)+3=39, then put it over the denominator (4).
Next you have 39/4, so then you divide the numerator (39) by the denominator (4) and you should get 9.75. finally you multiply 9.75 by 100 then put a percent sign behind it to get your percent.

aalyn [17]3 years ago

3 0

yes it's 975% because the 9=900 and 3/4=75

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Find the ordered triple of these equations. 2x + 5y - 3z = -5 3x + 2y + 7z = 15 5x - 4y + 6z = 34

svetoff [14.1K]

<h2>Ordered triple are (4,-2,1)</h2>

Step-by-step explanation:

We need to find ordered triple of 2x + 5y - 3z = -5 , 3x + 2y + 7z = 15 and 5x - 4y + 6z = 34

2x + 5y - 3z = -5 -------------------------eqn 1

3x + 2y + 7z = 15 -------------------------eqn 2

5x - 4y + 6z = 34 -------------------------eqn 3

eqn 1 + eqn 2

5x + 7y + 4z = 10 -------------------------eqn 4

eqn 4 - eqn 3

11y - 2z = -24 -------------------------eqn 5

eqn 1 x 3

6x + 15y - 9z = -15 -------------------------eqn 6

eqn 2 x 2

6x + 4y + 14z = 30 -------------------------eqn 7

eqn 7 - eqn 6

-11y + 23z = 45 -------------------------eqn 8

eqn 5 + eqn 8

21 z = 21

z = 1

Substituting in eqn 8

-11y + 23 x 1 = 45

-11 y = 22

y = -2

Substituting in eqn 1

2x + 5 x -2 - 3 x 1 = -5

2x = 8

x = 4

Ordered triple are (4,-2,1)

3 0

4 years ago

What is the result of isolating x2 in the equation below?(x + 1)2 + ( -8)2 =9A. x2 = -y2 - 2x +16y - 56B. x2 = y2 +2x+16y +56C.

Anit [1.1K]

The expression we have is:

$(x+1)^2+(y-8)^2=9$

Step 1. Use the binomial square formula:

$(a+b)=a^2+2ab+b^2$

Applying this formula to the first binomial squared:

$x^2+2x+1+(y-8)^2=9$

Step 2. Apply the formula for the square of a binomial to the second binomial:

$x^2+2x+1+y^2+2(y)(-8)+(-8)^2^{}=9$

In this case, we have some operations to solve before we move on to isolating x. So we solve the operations:

$x^2+2x+1+y^2-16y+64^{}=9$

Step 3. Move the terms that are not x squared to the right side of the expression. Remember that when we move one term from one side of the equation to the other, the term must change its sign. We get the following: