MATHEMATICS HIGH SCHOOL

What is the simplified expression for the expression below?-1(2x + 3) - 2(x - 1)

() 4x + 1

() 4x2

() 4x + 2

() 4% = 1

Answers

Answer 1
Answer:

first answer: -4x-1

.............
Answer 2
Answer:

Answer:

-4×-1

Step-by-step explanation:

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There are 30 students in a class. Which equations represent the situation if the number of boysis b and the number of girls is 7? Select all that apply.

A. b x 30 = 7

B.b = 30- 7

C. b = 30 + 7

D. b +7 =30

E. b x 7 =30

Answers

Step-by-step explanation:

A. b x 30 = 7E. b x 7 =30C. b = 30 + 7

Y=10 when x=8 what is x when y=30

Answers

Answer:

X= 24

Step-by-step explanation:

Y was multiplied by 3 to equal 30, so same rules are applied and you multiply 8 by 3

Answer:

28 or 24 im not sure which

Explain how you can tell that 31/33 is in simplest form

Answers

The simplified form of the fraction 31/33 is 31/33.

What is fraction?

An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.

Given:

A fraction,

31/33.

A fraction that can not be factorized further is the simplest form of the fraction.

31 and 33 both numbers do not have a common divisor other than 1.

Therefore, 31/33 is in the simplest form.

To learn more about the fractions;

brainly.com/question/10354322

#SPJ2
31/33 is in simplest form because both 31 and 33 do not have a common factor that be used to simplify.

(x^-4)^5
please simplify the expression

Answers

(x ^(-4) )^(5)

Apply exponent rule :

(a^b)^c = a^ ^(b.c)

=x ^((-4)*5)

(-4)*5

= - 20

Apply exponent  rule :

a ^(-b) = (1)/(a^b)

= (1)/(x ^(20) )

hope this helps!

there are 40 students in a class. 60% are boys. 25% of the boys have brown hair. how many boys have brown hair?

Answers

Answer:

10 boys have brown hair

Step-by-step explanation:

40 x .25 = 10

Answer:

10 boys

Step-by-step explanation:

Two functions, y = |x - 3| and 3x + 3y = 27, are graphed on thesame set of axes. Which statement is true about the solution to the
system of equations?
(1) (3,0) is the solution to the system because it satisfies the equation
y = |x - 3|.
(2) (9,0) is the solution to the system because it satisfies the equation
3x + 3y = 27.
(3) (6,3) is the solution to the system because it satisfies both equations.
(4) (3,0), (9,0), and (6,3) are the solutions to the system of equations
because they all satisfy at least one of the equations.

Answers

                        y = |x - 3|
              3x + 3y = 27
       3x + 3|x - 3| = 27
       3x + 3|x - 3| = ±27
       3x + 3|x - 3| = 27        or          3x + 3|x - 3| = -27
       3x + 3(x - 3) = 27        or         3x + 3(x - 3) = -27
   3x + 3(x) - 3(3) = 27     or       3x + 3(x) - 3(3) = -27
          3x + 3x - 9 = 27        or           3x + 3x - 9 = -27
                  6x - 9 = 27           or                6x - 9 = -27
                      + 9   + 9                                  + 9   + 9
                       6x = 36               or                 6x = -18
                        6      6                                     6       6
                         x = 6                  or                  x = -3
                         y = |x - 3|           or                  y = |x - 3|
                         y = |6 - 3|           or                  y = |-3 - 3|
                         y = |3|                or                  y = |-6|
                         y = 3                  or                  y = 6
                   (x, y) = (6, 3)           or            (x, y) = (-3, 6)

The two systems of equations of the graph is only equal to (6, 3). It is not equal to (-3, 6) because one of the systems of equations - y = |x - 3| - only has one solution to the function. So the answer to the problem is 3 - (6, 3) is the solution to the system because it satisfies both equations.
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