Answer:
20x
Step-by-step explanation:
5x * 4 = 20x
Answer: 270 chocolates
Step-by-step explanation:
Given the following :
Number of 5-year Olds = 5
Number of 6-year Olds = 5
Number of 7-year Olds = 5
Number of chocolates received by each child = 3 times as many chocolate as their age.
Number of chocolates received by 5-year Olds = 3 × 5 = 15 chocolates
Number of chocolates received by 6-year Olds = 3 × 6 = 18 chocolates
Number of chocolates received by 7-year Olds = 3 × 7 = 21 chocolates
Total Number of chocolates received by 5-year Olds = 5 * 15 = 75 chocolates
Total Number of chocolates received by 6-year Olds = 5 * 18 = 90 chocolates
Total Number of chocolates received by 7-year Olds = 5 * 21 = 105 chocolates
Totak number of chocolates altogether :
(75 + 90 + 105) = 270 chocolates
(7x+2)(3x+7)
Is the 2 an exponent or variable?
Answer:
4 students
Step-by-step explanation:
As shown in the diagram, let U=[The total number of students questioned]
![\implies n(U) = 10](https://tex.z-dn.net/?f=%20%5Cimplies%20n%28U%29%20%3D%2010)
A=[Those who liked peanut butter ]
![\implies n(A) =18](https://tex.z-dn.net/?f=%5Cimplies%20n%28A%29%20%3D18)
B=[Those who liked jam ]
![\implies n(B) = 10](https://tex.z-dn.net/?f=%20%5Cimplies%20n%28B%29%20%3D%2010)
x = those who like both peanut butter and jam.
Also 6 liked neither peanut butter nor jam.
From the diagram we can write the mathematical equation as follow and solve for x
![30 = 18 - x + x + 10 - x + 6](https://tex.z-dn.net/?f=30%20%3D%2018%20-%20x%20%2B%20x%20%2B%2010%20-%20x%20%2B%206%20)
![\implies 30 = 34- x](https://tex.z-dn.net/?f=%20%5Cimplies%2030%20%3D%2034-%20x%20)
We add x and subtract 30 to both sides.
![\implies 30 - 30 + x = 34- x + x - 30](https://tex.z-dn.net/?f=%20%5Cimplies%2030%20-%2030%20%2B%20x%20%3D%2034-%20x%20%2B%20x%20-%2030)
![\implies x = 4](https://tex.z-dn.net/?f=%5Cimplies%20x%20%3D%204)
Therefore 4 students like both peanut butter and jam.
-50 and -18 multiplied together equal 900 and added together equal -68 because a - times a- equals a positive.