Answer:
55 Southern deliveries.
Step-by-step explanation:
Let's make a ratio
Northern : Central : Southern : Total
14 : 44 : 22 : 80
7 : 22 : 11 : 40
35 : 110 : 55 : 200
We can see from our ratio, that there are 55 Southern deliveries when 200 deliveries are delivered.
Multiply the base which is 18.65 and multiply it by the height which is 9 3/10 and then multiply by half and that estimates to B. 90 cm
Answer:
-18
Remember PEMDAS.
Step-by-step explanation:
In order to answer this question, we must break this mathematical expression up into a series of mathematical operations (exponent, multiplication,division, addition, and/or subtraction):
"4 times a number" - The word "times" implies that we have to multiply 4 by an unknown number. We can simply label this unknown number as x.
"cubed" - In order to "cube" a number, we must raise it to the third power, or have an exponent of 3. Our unknown number of x now becomes x3 because we raised it to the third power.
"decreased by 7" - The word "decreased" implies that we must subtract 7 from the product of 4 multiplied by x3
With all of the information we now have, we can form an algebraic expression for this problem.
"4 times a number cubed decreased by 3" now becomes:
4x3 - 7
