Use a box. Split the terms into the boxes and then multiply across. Sort of like area multiplication, only with terms.
3 5x
4y 12y 20xy
3 9 15x
Step-by-step explanation:
2 * 2 for potatoes = £4
3 * 3 for carrots = £9
90p * 3 for turnips = 270p = £2.70
total price = 9+4+2.70=15.70
change = 20 - 15.70 = £4.30
Answer:
Step-by-step explanation:
Answer:
3x + 4y = 7
Step-by-step explanation:
The slope = difference of y values / corresponding difference in x values of the 2 points.
Here it is (4 - (-2) / (-3 - 5)
= 6 /-8 = -3/4.
Now we use the point/slope form of the equation of a line:
y - y1 = m(x - x1) where m = slope and (x1, y1) is a point on the line.
We take the point (5, -2) and m = -3/4:
y - (-2) = -3/4 (x - 5)
y + 2 = -3/4x + 15/4
y = -3/4 x + 15/4 - 8/4
y = -3/4 x + 7/4 This is the equation in slope/intercept form.
To convert it to standard form we multiply through by 4 and rearrange:
4y = -3x + 7
3x + 4y = 7 is standard form.
Answer:
b=3
Step-by-step explanation:
48/6-5=b
you are solving for b
always do problems in this order:
parentheses
exponents
multiply
divide
add
subtract
this problem only has
divide and subtract
so you will divide first
48/6= 8
then you will subtract
8-5=3
so b=3
