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4 years ago

Which number is rational, an integer, and a real number?

Mathematics

1 answer:

allochka39001 [22]4 years ago

6 0

B is the correct if this multiple choice

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Given that cosine theta = -1/2 and theta is obtuse find sin4theta

igomit [66]

Answer:

0.8660

Step-by-step explanation:

cosine theta = -1/2

theta = cosinearctan(-0.5)

theta = 120

sine4theta = sine 4(120)

= sine480

= 0.8660

5 0

4 years ago

Find the value of x.

HACTEHA [7]

Answer:

what

Step-by-step explanation:

sure?

5 0

3 years ago

*** TIMED ***

Ymorist [56]

Answer is A.
c=139
b=18.04
a=11.76

5 0

3 years ago

Read 2 more answers

Od 2 ( 2 7 1-3 1 3 1-2 6:1-6 b = d = IDONE

Lena [83]

Answer:

$a = \boxed{1},\: b=\boxed{0}\\\\c=\boxed{0},\: d=\boxed{1}$

Step-by-step explanation:

$\begin{bmatrix} 2 & 7\\\\1 & 3\end{bmatrix}\:\begin{bmatrix} -3 & 7\\\\1 & -2\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

Multiply both the matrices on left side, we find:

$\begin{bmatrix} 2(-3)+7(1) & 2(7)+7(-2)\\\\1(-3)+3(1) & 1(7)+3(-2)\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

$\rightarrow\begin{bmatrix} -6+7 & 14-14\\\\-3+3 & 7-6\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

$\rightarrow\begin{bmatrix} 1 & 0\\\\0 & 1\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

Comparing the corresponding elements of both the matrices on both sides, we find:

$a = \boxed{1},\: b=\boxed{0},\:c=\boxed{0},\: d=\boxed{1}$

7 0

3 years ago

A salesperson receives a weekly salary of $400400. In addition, $3030 is paid for every item sold in excess of 200200 items.

Elanso [62]

I think you have to multiply them. If you have a calculator you can do it easily.

3 0

3 years ago