Ask question

Ask question

All categories

alukav5142 [94]

2 years ago

5

Evaluate the expression when x=1/3 y=-7/4 3x+y

1 answer:

Elden [556K]2 years ago

8 0

Answer is -3/4

Start with putting parentheses on the given numbers for these variables
Remove parentheses(When there is a in front of an expression in parentheses, the expression remains the same)
Reduce the numbers with the greatest common factor(3)
Calculate the difference 1 -7/4
Alternative form: -0.75

You might be interested in

What is the value of x enter your answer in the Box

Dimas [21]

61.4 is the value of x

7 0

3 years ago

Help! If you know this can you tell me how to do it?

aleksandr82 [10.1K]

Answer:

c

Step-by-step explanation:

Here's how this works:

Get everything together into one fraction by finding the LCD and doing the math. The LCD is sin(x) cos(x). Multiplying that in to each term looks like this:

$[sin(x)cos(x)]\frac{sin(x)}{cos(x)}+[sin(x)cos(x)]\frac{cos(x)}{sin(x)} =?$

In the first term, the cos(x)'s cancel out, and in the second term the sin(x)'s cancel out, leaving:

$\frac{sin^2(x)}{sin(x)cos(x)}+\frac{cos^2(x)}{sin(x)cos(x)}=?$

Put everything over the common denominator now:

$\frac{sin^2(x)+cos^2(x)}{sin(x)cos(x)}=?$

Since $sin^2(x)+cos^2(x)=1$ , we will make that substitution:

$\frac{1}{sin(x)cos(x)}$

We could separate that fraction into 2:

$\frac{1}{sin(x)}$ × $\frac{1}{cos(x)}$

$\frac{1}{sin(x)}=csc(x)$ and $\frac{1}{cos(x)}=sec(x)$

Therefore, the simplification is

sec(x)csc(x)

5 0

3 years ago

PLEASE HELP ME WITH NUMBER 11, WORTH 15 POINTS!!! AAAAA

malfutka [58]

Answer: 43.4

Step-by-step explanation: if it was dilated by a bigger number than 1 then it’s goin to have a bigger area and in this case it was dilated by

4 2/3 so you multiply the area by 4 2/3 to round your answer to the nearest tenth and u get 43.4

6 0

3 years ago

What is thirty-seven and nine tenths written in expanded form

xeze [42]

37.9 equals 30+7+.9 you should try to put in number form so you know what you're dealing with

3 0

3 years ago

Read 2 more answers

The point P (5, -1) is rotated 90 degrees clockwise around the origin.

blondinia [14]

I would say the answer is c

3 0

3 years ago