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.
To get Fractions equal, you can multiply the fraction By any number you want: (a/b) = k.(a/b)
So multiply 3/5 by 3: (3/5).3 = 9/15
Multiply it by 2: 2.(3/5) = 6/10
3/5 = 9/15 = 6/10 = 0.6
Hope this Helps! :)
Answer:
Step-by-step explanation: 500/2.50 = 200 so he will need to sell 200
You take 3•4 to get 12, then you add a zero to that and get 120. You then multiply by six and get 720.
I hope this helps you
-7.x^3=2.7.9
x^3=-18
x=i.(3square root of 18)