What is the value of the expression -13(21 4 )?
9
To solve the expression, you need to multiply -13 by the sum of 21 and 4.
-13(21 + 4) = -13(25) = -325
The value of the expression is -325.
What is the value of the expression -13(21 4/9 )?
To solve the expression, you need to multiply -13 by the sum of 21 and 4/9.
-13(21 4/9) = -13(21 + 4/9) = -13(189/9 + 4/9) = -13(193/9) = -2513/9
The value of the expression is -2513/9.
Brenda ordered 12 dozen cookies from Briona’s Bakery for the family reunion.
1/3 of the cookies are peanut butter cookies.
1/6of the cookies are iced sugar cookies.
3/8of the cookies are chocolate chip cookies.
The rest of the cookies are oatmeal cookies.
How many cookies are oatmeal cookies?
To find the number of oatmeal cookies, we need to subtract the sum of the other types of cookies from the total number of cookies.
The total number of cookies is 12 dozen, which is equal to 12 * 12 = 144 cookies.
1/3 of the cookies are peanut butter, so 1/3 * 144 = 48 cookies are peanut butter.
1/6 of the cookies are iced sugar, so 1/6 * 144 = 24 cookies are iced sugar.
3/8 of the cookies are chocolate chip, so 3/8 * 144 = 54 cookies are chocolate chip.
To find the number of oatmeal cookies, we subtract the sum of the other types from the total:
Total - (peanut butter + iced sugar + chocolate chip) = 144 - (48 + 24 + 54) = 144 - 126 = 18.
Therefore, there are 18 oatmeal cookies.
William gave the cashier at Billy Bob’s BBQ two $20-dollar bills to pay for 4 chopped beef sandwiches to go. The cashier gave him $6.84 in change.
What is the cost in dollars and cents for a chopped beef sandwich?
To find the cost of a chopped beef sandwich, we need to divide the total amount paid by the number of sandwiches.
William gave the cashier two $20-dollar bills, which is a total of $20 * 2 = $<<20*2=40>>40.
The cashier gave him $6.84 in change, which means the total cost of the sandwiches is $40 - $6.84 = $33.16.
Since William bought 4 sandwiches, we divide the total cost by the number of sandwiches:
$33.16 / 4 = $8.29.
Therefore, the cost of a chopped beef sandwich is $8.29.