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Westkost [7]
3 years ago
13

I need help with these four

Mathematics
1 answer:
Kazeer [188]3 years ago
8 0

Answer:

  • True, b), c), b)

Step-by-step explanation:

Q1

  • True

Q2

  • b) sin = opposite/hypotenuse

Q3

  • Cos A = 0.1908
  • A = arccos 0.1908
  • A = 79° ⇒ Option c)

Q4

  • tan A = 16/19
  • A = arctan 16/19
  • A = 40° ⇒ Option b)
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Find the area of the trapezoid
Soloha48 [4]

Answer:

   = 48 units ^2

Step-by-step explanation:

We know the area of a trapezoid is found by

A = 1/2 (b1+b2) *h  where b1 and b2 are the bases and h is the height

AT and SR are the bases and AT = 8 and SR =4

The height is 8

A = 1/2 (8+4) * 8

A = 1/2 * (12) * 8

   =48 units ^2

6 0
4 years ago
In the function p(x)= 1/2x-3 what is the domain and range please help thanks !!!!
olga_2 [115]

Answer:

Domain:   (all real numbers)

Range:   (all real numbers)


Step-by-step explanation:

p(x)= 1/2*x-3

the domain is the possible values for x

this will work for all values of x

Domain:   (all real numbers)

the range is the possible values for the output or p(x)

we can get out any value for p(x)

Range:   (all real numbers)


5 0
4 years ago
Write a system of equations to describe the situation below, solve using an augmented matrix, and fill in the blanks.This mornin
Georgia [21]

Answer:

\begin{gathered} \text{ A tray of club sandwiches cost \$9} \\ A\text{ tray of vegetarian sandwiches cost \$6.} \end{gathered}

Step-by-step explanation:

Given the information, create the following augmented matrix:

The first order was for 1 tray of club sandwiches, at a cost of $9. The second-order, which cost $69, was for 5 trays of club sandwiches and 4 trays of vegetarian sandwiches.

\begin{gathered} 5x+4y=69 \\ x=9 \end{gathered}

Into an augmented matrix:

\begin{bmatrix}{5} & {4} \\ {\placeholder{⬚}} & {1}\end{bmatrix}\begin{bmatrix}{69} & {} \\ {9} & {}\end{bmatrix}

Solve.

Let x be the cost of a tray of club sandwiches.

Let y be the cost of a tray of vegetarian sandwiches.

\begin{gathered} x=9 \\ Substitute\text{ on the first equation} \\ 5(9)+4y=69 \\ 4y=69-45 \\ y=\frac{24}{4} \\ y=6 \end{gathered}

8 0
1 year ago
What other classifications can a rhombus be​
Arturiano [62]

Answer:

Classification of rhombus

Step-by-step explanation:

  1. The opposite angles of a rhombus are equal.
  2. each diagonal bisect the vertical angles.
  3. the diagonals are not equal and bisect each other perpendicularly.
  4. the triangles formed by the diagonals are congruent.
  5. the area of a rhombus=1/2d1×d2
5 0
3 years ago
What is the angle of the rotation from RST TO R'S'T'
zavuch27 [327]

Answer:

<em>-90 degrees</em>

Step-by-step explanation:

Draw a segment from the origin, point O, to point R. Draw a segment from the origin, point O, to point R'. The angle of rotation is the angle between segments OR and OR'.

The slope of segment OR is 2/3.

The slope of segment OR' is -3/2.

The slopes are negative reciprocals, so the segments are perpendicular.

The angle between the segments is 90 degrees. The rotation is counterclockwise, so it is a negative number of degrees.

The angle of rotation is -90 degrees.

5 0
3 years ago
Read 2 more answers
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