18a+(a−9)2
Distribute:
=18a+a2+−18a+81
Combine Like Terms:
=18a+a2+−18a+81
=(a2)+(18a+−18a)+(81)
=a2+81
Answer:
=a2+81
Answer:
Step-by-step explanation:
The notation (p•q)(x) means p(q(x)) or p of q of x. To find it, substitute q(x) into p(x) and simplify:
Answer:
5
Step-by-step explanation:
So we want to find the value of x where the area to the left of it is equal to 0.6.
Let's start by finding the area of the first triangle, between x=0 and x=4.
A = 1/2 bh
A = 1/2 (4) (0.2)
A = 0.4
So we know a > 4. What if we add the area of that rectangle?
A = 0.4 + bh
A = 0.4 + (1) (0.2)
A = 0.6
Aha! So a = 5.
Answer:
240
Step-by-step explanation:
Since David has 60 fewer storybooks than Huiling, take the total number of storybooks, which is 460 and minus it by 60.
460-60=400
Now, there are 5 units, 5units=400
1unit=80
Since Jenny has 3 times as many storybooks as David, Jenny has 3 units, 3unit=80x3=240
Tip: Draw a model to help you visualise the question better.
Answer:
Vanessa’s total pay is $482.50
Step-by-step explanation:
Base salary: $400
5% of 1,650 is 82.50
0.05 x 1,650 = 82.50
Commission: $82.50
Equation: 400 + 82.50 = $482.50
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