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Anon25 [30]
3 years ago
8

Arrange the steps in the correct order to solve this trigonometric equation. 2sin^2x - sin x = 0 for 0 degrees less than equal t

o x less than equal to 90

Mathematics
2 answers:
mihalych1998 [28]3 years ago
6 0
Consider this option (see the attached picture).

kicyunya [14]3 years ago
6 0

Answer:

1.  2sin^2x-sinx-1=0

2. substituting sinx with u  

3. 2u^2-u-1  

4. (2u+1)(u-1)=0

5. u=1 and u=-1/2

6. replacing u with sinx so sinx=1 sinx=-1/2  

7. x=90 0  <x<90

8.x=90

Step-by-step explanation:

i just took the test and got it right

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Write an equation of a line that passes through the point (4, 3) and is perpendicular to the graph of the equation y=-1/3 +4.​
likoan [24]

Answer:

y=3x-9

Step-by-step explanation:

Hi there!

we are given a point (4,3), and a line (y=-1/3x+4)

Perpendicular lines have slopes that are negative and reciprocal; if they are multiplied together, the result is -1

first, let's find the slope of the new line.

we can find it with this formula: (m=slope)

-1/3m=-1

multiply both sides by -3

m=3

here's our equation so far, written in y=mx+b form, where m is the slope and b is the y intercept

y=3x+b

we need to find b

Because the line passes through the point (4,3), we can use it to find b

substitute x as 4 and y as 3

3=3(4)+b

multiply

3=12+b

-9=b

substitute into the equation

<u>y=3x-9</u>

Hope this helps!

7 0
3 years ago
The width of rectangle is the length minus 2 units. the area of the rectangle is 48 units. What is the width, units, of the rect
dedylja [7]

Answer:

6

Step-by-step explanation:

W=L-2

A=L*W

48=L(L-2)

48=L^2-2L

You factor and then you get L=8

W=8-2=6

5 0
3 years ago
Which inequality is graphed below?
kaheart [24]

Answer:x>1

Step-by-step explanation:

8 0
1 year ago
PLEASE HELP I NEED SOMEONE TO GET POINTS.
Nostrana [21]

Answer:

ok

Step-by-step explanation:

5 0
3 years ago
twenty four students in Jamal's class are wearing tennis shoes there are 30 students in his class, jamal says that 70% of his cl
monitta

Answer:

NO

Step-by-step explanation:

So in order to find out whether or not Jamal is right we calculate the percentage of students wearing tennis shoes:

24/30*100

Jamal is incorrect because 80% of the students are wearing tennis shoes yet he said 70%.

HOPE IT HELPED

3 0
3 years ago
Read 2 more answers
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