Answer:
Step-by-step explanation:
The first is (-2)(-2) = 4.
The second is -(2)(2) = -4.
The order of operations says exponents are evaluated first. An exponent signifies repeated multiplication of the base.
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If your calculator is working correctly, it will show you the difference.
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Beware spreadsheet programs. They don't always follow the order of operations when evaluating formulas. Parentheses are often required to keep them honest.
Answer: the price of each bagel is $0.55 and each doughnut is $0.7
Step-by-step explanation:
Let x represent the price of each bagel.
Let y represent the price of each doughnut.
One of them bought 7 bagels and 5 doughnuts, and paid $7.35. This is expressed as
7x + 5y = 7.35 - - - - - - - - - - - - - 1
The other customer bought 4 bagels and 6 doughnuts, and paid $6.40. This is expressed as
4x + 6y = 6.4 - - - - - - - - - - - - - 2
Multiplying equation 1 by 4 and equation 2 by 7, it becomes
28x + 20y = 29.4
28x + 42y = 44.8
Subtracting, it becomes
- 22y = - 15.4
y = - 15.4/ - 22
y = 0.7
Substituting y = 0.7 into equation 1, it becomes
7x + 5 × 0.7 = 7.35
7x + 3.5 = 7.35
7x = 7.35 - 3.5
7x = 3.85
x = 3.85/7
x = 0.55
Hey there! :)
The formula for finding volume of a rectangular prism ⇒ l · w · h
l = 10
w = 3
h = 7
<em>All you have to do is multiply the 3 numbers together</em>
10 × 3 × 7 = 210
The volume is 210 cubic feet ⇒ C
Hope this helps :)
Answer:
3.200×107 h
Step-by-step explanation:
Answer:
6 3/8, 6 1/2, 6 3/4, 6 5/6
Step-by-step explanation:
I recommend converting everything to decimals, so 6.375, 6.5, 6.75, and 6.833.
Hope this helps :)