Answer:
Step-by-step explanation:
Let
x-----> the cost of his lunch
y----> the cost of his dinner
we know that
-----> equation A
---> equation B
substitute equation B in equation A
-----> the cost of the dinner
Answer: x=90
Step-by-step explanation: Okay let's see! Let's solve your equation step-by-step.
x
42
=
15
7
Step 1: Cross-multiply.
x
42
=
15
7
x*(7)=(15)*(42)
7x=630
Step 2: Divide both sides by 7.
7x
7
=
630
7
x=90
Answer:
the answer is 90
Step-by-step explanation:
Answer: Program C allows students to earn a Mathematics degree (B.A. or B.S.) by combining courses in the Department of Mathematics with courses from one other department. In most areas of specializations, mathematical and/or quantitative courses in other departments are part of the math degree program. All Program C students take a minimum of five core math courses: Calculus I, Calculus II, Calculus III, Introduction to Linear Algebra, and a proofs course, usually either Introduction to Abstract Algebra or Fundamental Properties of Spaces and Functions I.
Step-by-step explanation: Hope this helps.
Hello there! I can help you! The formula for simple interest is prt. This means that you multiply the principal (the initial amount in the bank), by the rate (simple interest rate) by the amount of time (could be in months or years).
A. Okay. For this problem, we are looking for the amount of interest that will be in the bank after 6 months. We would multiply the time by 0.5, because 6 months is 1/2 a year and 1/2 = 0.5. Let's start off with the 1st account. 4,000 * 5.25% (0.0525) = 210. 210 * 0.5 is 105. There will be $105 in the first account after 6 months. Now, the second one. 2,000 * 6% (0.06) = 120. 120 * 0.5 is 60. There will be $60 in the 2nd account after 6 months. Here are the answers easier to read.
1st account: $105
2nd account: $60
b. To find the difference in the amount of interest earned, just subtract both amounts. 105 - 60 is 45. The difference of the amount of interest earned between the 2 accounts is $45.
c. The 1st account is giving you the most interest out of both accounts. Although it has a lower APR, it gives you the most money, because you have more money in the account initially, than in the 2nd account. When it comes to simple interest, it is calculated, based on the initial amount in the bank. You would have many more dollars in the bank with the first account, and that number would go up as more interest is added.