Answer:
Step-by-step explanation:
One approach would be to begin the indicated multiplication: Multiply a² by a, obtaining a³, which is the first term of the product a3 – a2b + ab2 + a2b – ab2 + b3. Please use " ^ " to indicate exponentiation, or (²) or (³):
a(a² - ab + b²) = a³ (plus 2 more terms, which are -a²b and ab²).
Here we are applying the distributive property of multiplication.
Answer:
210 + 210 = b + t = 420
Step-by-step explanation:
Answer:
190 cm2.
Step-by-step explanation:
First you have to find the area of the whole shape.
20 cm times 10 cm is 200 cm2.
Now, you have to find the area of the smaller shape inside.
5 cm times 2 cm = 10 cm2.
Finally, you subtract the area of the smaller shape from the larger shape to find the area of the shaded area.
200 cm2 - 10 cm2 = 190 cm2.
Answer:
The chlorine tablets are $36 and the pH test kit is $4.40.
Step-by-step explanation:
So what I first did was add 90+11 (because $90 for the chlorine tablets and $11 for the pH kit). The answer you should get is 101. From their I did 101 multiplied by 40% or 101 multiplied by .40 (40% and 0.40 are the same thing). You now get $40.4.
Now I did 90·40%. I got $36
Then I did 11·40%. I got 4.4
I added them up and got $40.4 which was my new price so now we know that the chlorine tablets are $36 and the pH test kit is $4.40.