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kirill115 [55]
3 years ago
7

Roy and Sam start solving the equation as follows.

Mathematics
1 answer:
denpristay [2]3 years ago
7 0

Answer:

The correct option is D.

Step-by-step explanation:

The given equation is

-3x+4=5x-6

According to the addition property of equality a=b and a+c=b+c are equivalent equations.

Use addition property of equality, add 3x on both the sides.

-3x+4+3x=5x-6+3x

4=8x-6

Therefore Sam's work is incorrect because he make calculation mistake.

According to the subtraction property of equality a=b and a-c=b-c are equivalent equations.

Use subtraction property of equality, subtract 5x from both the sides.

-3x+4-5x=5x-6-5x

-8x+4=-6

Therefore Roy's work is correct because he used subtraction property.

Option D is correct.

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A book has 6 chapters in it, each with the same number of pages. The book also has an introduction that is 8 pages long. The who
VARVARA [1.3K]

Answer:

  • 31 pages

Step-by-step explanation:

Assumed the question is how many pages are in each chapter.

<u>Let it be x:</u>

  • 6x + 8 = 194
  • 6x = 186
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8 0
3 years ago
Read 2 more answers
Which of the following is true of the data set represented by the box plot max at 35
Bezzdna [24]

Though the box plot is not given, the truth about the data set represented by the box plot is <u>removing</u> the outliers would not affect the median.

<h3>What is a box plot?</h3>

A box plot gives a graphical (rectangular) representation of statistical data based on the following five values: minimum, first quartile, median, third quartile, and maximum.

Essentially, a box plot has the following five data descriptions:

  • The leftmost whisker, showing the minimum value.
  • The rightmost whisker, showing the maximum value.
  • The leftmost line, showing the first quartile.
  • The middle line, showing the median or the second quartile.
  • The last line shows the third quartile.

Thus, the truth about the data set represented by the box plot is <u>removing</u> the outliers would not affect the median.

Learn more about the box plot at brainly.com/question/14277132

3 0
2 years ago
PLEASE HELP ASAP
Nat2105 [25]
A leg of a right triangle can never be greater then the hypotenuse

this formula will tell you if it's a valid right triangle
{?}^{2} + {?}^{2} = {?}^{2}
the first two question marks are the legs of the triangle while the one after the = is the hypotenuse.

THE STEPS:
{3}^{2} + { \sqrt{7}^{2} } = {4}^{2}
9 + {2.65}^{2} = 16
{2.65}^{2} = 7
9 + 7 = 16
ANSWER: \sqrt{7}
5 0
3 years ago
D/dx(sin x/2+cos x) = (a + b cos x)/(2+cos x)^2 find a and b.​
Talja [164]

Answer:

a = 1 and b = 2

Step-by-step explanation:

Using the Quotient Rule>

d/dx[(sin x)/(2+cos x) ]

=   [(2 + cos x) * cosx -  sin x * - sin x)]  /  (2 + cos x)^2

= 2cos x + cos^2x + sin ^2 x) /  (2 + cos x)^2

But cos^2x + sin^2x = 1 so we have:

(1 +  2 cos x)  /   (2 + cos x)^2

- so a = 1 and b = 2.

7 0
3 years ago
what is the point slope form of an equation with the slope of 3/5 that passes through the point (10,-2)?
Mama L [17]
Point slope form of a line:
y-y_1=m(x-x_1) where m is your slope and (x_1,\ y_1) is a point on your line.

For a line with a slope of 3/5 that passes through (10, -2)...
m=\frac35,\ x_1=10,\ y_1=-2
Let's plug these values into our formula.

y-(-2)=\frac35(x-10)

Subtracting by a negative is the same thing as adding (the double negatives cancel), so let's simplify that.

\boxed{y+2=\frac35(x-10)}

There's our equation in point-slope form. (keep in mind that you're not going to want to distribute that 3/5 or subtract the 2 or anything. You want to keep it similar to the formula.
6 0
3 years ago
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