Answer:
3x^2-2x+18x-12
3x^2+16x-12
Step-by-step explanation:
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Answer:
If each serving is 3/4 of a cupcake then we have to multiply 18* 3/4 to get the answer of 13.5 and a half servings.
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
BOOM
Answer: 152.46 squared centimeters.
Step-by-step explanation:
- The equation to find the area of the trapezoid is A = ½ (6.6 + 16.5) 13.2
- Distribute ½ into (6.6 + 16.5) . A = (3.3 + 8.25) 13.2.
- Add the numbers inside the parenthesis. A = 11.55 * 13.2
- Multiply 11.55 * 13.2. A = 152.46.
Answer:
The larger number is -6, the smaller number is -15
Step-by-step explanation:
We have two numbers, a and b.
We know that one number is larger than another by 9.
Then we can write:
a = b + 9
then a is larger than b by 9 units.
If the greater number is increased by 10 (a + 10) and the lesser number is tripled (3*b), the sum of the two would be -41:
(a + 10) + 3*b = -41
So we got two equations:
a = b + 9
(a + 10) + 3*b = -41
This is a system of equations.
One way to solve this is first isolate one variable in one of the two equations:
But we can see that the variable "a" is already isolated in the first equation, so we have:
a = b + 9
now we can replace that in the other equation:
(a + 10) + 3*b = -41
(b + 9) + 10 + 3*b = -41
now we can solve this for b.
9 + b + 10 + 3b = -41
(9 + 10) + (3b + b) = -41
19 + 4b = -41
4b = -41 -19 = -60
b = -60/4 = -15
b = -15
then:
a = b + 9
a = -15 + 9 = -6
a = -6
