Answer:
1070cm2
Step-by-step explanation:
the cereal box represents a cuboid and it is closed hence a closed cuboid.
SA- Surface area
L- Length = 15
W- Width =4
H- Height =25
In a closed cuboid, there are going to be 6 faces( 3 pairs).
To find SA, we have to take the area of all faces and sum them up.
You can do this by carrying out the area of all faces and summing them up or you can use the formula:
SA of a closed cuboid=2(L x W) + 2(W x H) + 2(L x H)
= 2(15 x 4) + 2(4 x 25) + 2(15 x 25)
= 2(60) + 2(100) + 2(375)
=120 + 200 + 750
=<u>1070cm2</u>
ax² + bx + c = 0
You know:
a = -2
b = 1
c = 3
The 1st option is your answer
-2x² + x + 3 = 0
a = -2
b = 1
c = 3
Answer:
Total 1352 different arrangements can be formed.
Step-by-step explanation:
Total number of letters is 26 (a to z).
We need to find the arrangements of 3 letters
It is given that the first letter must be w or k and repetition of letters are allowed.
Since first letter can be w or k, therefore the possibilities for first letter is 2.
Repetition of letters are allowed and any letter can be formed in place of second and third letter.
So, the possibilities for second letter is 26 and possibilities for third letter is 26.
Total possibilities of arrangements of 3 letters is

Therefore total 1352 different arrangements can be formed.
X + y = 3,500 . . . (1)
x – y = 2,342 . . . (2)
(1) - (2) => 2y = 1158
y = 1158/2 = 579
x = 3500 - 579 = 2921
Therefore, he had 2,921 contempolary titles and 579 classic titles.