Answer:
294
Step-by-step explanation:
The area of one face of the cube would be 7 x 7 = 49
Since there are 6 faces on a cube, the total surface area would therefore be 49 x 6 =
Answer:
Youth ticket = $21
Adult ticket = $39
Step-by-step explanation:
We'll call adult tix x and child tix y. Based on the information given, we can make these two equations:
7x + 12y = 525
x - y = 18
Start by putting x in terms of y with that second equation
x = y + 18
Then substitute that into the first equation:
7(y+18) + 12y = 525
Then solve for y
7y + 126 + 12y = 525
19y = 399
y = 21
If we want the adult price as well, we know
x - 21 = 18
x = 39
Checking the math:
7(39) + 12(21) = 273 + 252 = $525
The equation in terms of "t"
1/t = ¹/₂₁ + ¹/₁₅
On solving the equation "t"= 8 ³/₄ days
Step-by-step explanation:
Time taken by roofer to shingle a roof- 15 hours
Time taken by apprentice-21 hours
Time required to shingle if both worked together- “t” hours
If roofer shingles the roof in 15 hours
Part of the roof he would shingle in 1 hours= ¹/₁₅
Similarly, part of the roof shingled by apprentice in 1 hour- ¹/₂₁
Part of the roof shingles when they worked together for 1 hours- 1/t = ¹/₂₁ + ¹/₁₅
Total time taken= 1/t = ¹/₂₁ + ¹/₁₅
1/t= ⁽²¹⁺¹⁵⁾ /₃₁₅
t= 315/36 = 8 ³/₄ days
Answer:
$2.09
Step-by-step explanation:
3.8 x .55 = 2.09
Answer:
Expressing a number in a power of 2 means that you have to figure out how many times you should multiply 2 by itself so the product will be that number.
The number is expressed as 2^n
For example:
Express 16 as a power of 2:
To get 16, you have to multiply 2 by 4 times.
2 × 2 × 2 × 2 = 16
16 = 2^4
Then the answer is 2^4