Answer: Option 4: -2sin(x + pi/2) - 1
Step-by-step explanation:
When this equation is graphed, the y-intercept is -3 which is what the image shows. None of the others have a y-intercept at -3.
Hope this helps!
I think its this, havent checked though
These are 3 questions and 3 answers.
1) Question 18
Answer: 3
Explanation:
i) Equation given: 3x - y = - 4
ii) Transform to slope-intercept form: y = mx + b, where m is the slope.
y = 3x + 4
iii) Then, the slope is m = 3.
2) Question 19
Answer:
17 horizontal layers
43 bricks are left
Explanation:
i) Data:
number of bricks: 5500
number of bricks per horizontal layer: 321
ii) Calculations:
Divide the number of bricks by the number of bricks per horizontal layer: you need both the quotient and the remainder.
5500 ÷ 321 = 17 and 43 are left.
3) Question 20
Answer: indefinite
Explanation:
The line is vertical.
All the vertical lines have indefinite slopes.
That is because the slope is given by:
slope = change in y / change in x.
But x is constant, which means that the change in x is zero. And, since the division by zero is not defined, the slope is not indefinite.
Answer:
2 5 /14
Step-by-step explanation:
−10 2/7 ÷ (−4 4/11)
Change to improper fractions
−10 2/7 = - (7* 10+2)/7 =-72/7
-4 4/11 = -( 11*4+4) = -48/11
-72/7 ÷ -48/11
Copy dot flip
-72/7 * -11/48
Canceling an 8 from the top left and the bottom right
-9/7 * -11/6
Canceling a 3 from the top left and the bottom right
-3/7 * -11/2
33/14
Now we change it back to a mixed number
14 goes into 33 2 times 2*14 = 28
33-28 = 5 this goes over the denominator
2 5 /14
2 solutions (X^2)
The Answer is D. Two Real Solutions