All categories

3 years ago

I need help asap

1 answer:

8 0

Well I can help you with number 4 for your quiz D) -2 4/9 is rational because exponents and pie signs are known to be irrational but fraction can be simplify.

You might be interested in

Given the system of equations:

mr_godi [17]

Answer:

Step-by-step explanation:

Given the system of equations:

2x + 3y = 15

X + 3y = 0

What is x?

2x + 3y = 15

X + 3y = 0 subtract the bottom equation fron the top one

2x - x + 3y - 3y = 15 - 0 see how the 3y - 3y equates to zero

2x - x = 15

x = 15 Now for extra credit what is y?

X + 3y = 0

15 + 3y = 0

15 - 15 + 3y = 0 - 15

3y = -15

3y/3 = -15/3

y = -5

-15

-5

6 0

3 years ago

Sin^2(x/2)=sin^2x <br> Find the value of x

Veronika [31]

$\sin^2\dfrac x2=\sin^2x$
$\dfrac{1-\cos x}2=1-\cos^2x$
$1-\cos x=2-2\cos^2x$
$2\cos^2x-\cos x-1=0$
$(2\cos x+1)(\cos x-1)=0$
$\implies\begin{cases}2\cos x+1=0\\\cos x-1=0\end{cases}$ $\implies\begin{cases}\cos x=-\frac12\\\cos x=1\end{cases}$

The first case occurs in $0\le x$ for $x=\dfrac{2\pi}3$ and $x=\dfrac{4\pi}3$ . Extending the domain to account for all real $x$ , we have this happening for $x=\dfrac{2\pi}3+2n\pi$ and $\dfrac{4\pi}3+2n\pi$ , where $n\in\mathbb Z$ .

The second case occurs in $0\le x$ when $x=0$ , and extending to all reals we have $x=2n\pi$ for $n\in\mathbb Z$ , i.e. any even multiple of $\pi$ .

6 0

4 years ago

Given that zmr001-1.jpg = –2 and zmr001-2.jpg = –1, which of the following do you know?

____ [38]

B,C,E,F are the answers

7 0

4 years ago

Read 2 more answers

What is the value of y?

AnnyKZ [126]

Answer:y= 47/20

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Ann took a taxi home from the airport. The taxi fare was \$2.10$2.10 per mile, and she gave the driver a tip of \$5$5. Ann paid

Ivahew [28]

Answer:

$2.10x+5=49.10$

Step-by-step explanation:

We have been given that Ann took a taxi home from the airport. The taxi fare was $2.10 per mile, and she gave the driver a tip of $5. Ann paid a total of $49.10.

Let x be the distance in miles between airport and Ann's home. The fare per mile taxi ride is $2.10, therefore, the fare for x miles of taxi ride will be 2.10x.

We can see that $5 will be constant value for our equation as it will remain same. $2.10x+5$ will be total amount paid by Ann for x miles of taxi ride including tip.

We can write an equation to determine the distance between airport and Ann's home by equating fare of x miles plus tip given by Ann's to driver with total amount paid by Ann.

$2.10x+5=49.10$

Therefore, an equation representing the distance in miles between airport and Ann's home will be $2.10x+5=49.10$ .

8 0

4 years ago