The Foil method is used for__a determining the order of operations in a standard algebra problem
b factoring quadratic equations
c simplifying factor sets that contain variables
d solving inequalities

Answers

Answer 1

Answer: Factoring Quadratic Equations.
U use the FOIL method to factor trinomials into binomial that would then allow you to find the solutions to the problem

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What is the difference between the absolute value of -8 and the absolute value of 6?O 2
O 8
O 14
0.16

Answers

Answer:

Step-by-step explanation:

Since the absolute value of -8 is 8, and the absolute value os 6 is 6, we can

do 8-6=2.

What’s the slope of y = - 4x - 3?

Answers

The slope is -4.
m=-4

A man invests a certain amount of money at 2% interest and $800 more than that amount in another account at 4% interest. At the end of one year he earned $112 in interest. How much money was invested in each account?Which of the following equations could be used to solve the problem?

A.)0.02x + 0.04(800) = 112
B.)0.02x + 0.04(x + 800) = 112
C.)0.04x + 0.02(x + 800) = 112

Answers

.02x+.04*2x=112
.02x+.08x=112
.10x=112
x=112/.10
x=$1,120 invested @ 2%.
2*1,120=$2,240 amount invested @ 4%.
Proof:
.02*1,120+.04*2,240=112
22.4+89.6=112
112=112

A.) 0.02x + 0.04(800) = 112

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Alma wants to prove to her parents that listening to music while she studies for her tests will help her get better grades. She decides to ask 15 of her friends if they listen to music while they study for tests and what their grades are. She finds that her friends who have high grades also listen to music while they study for tests. She tells her parents that she has proven that listening to music while studying for tests will cause her grades to improve. What mistake has Alma made?

Answers

She asked her friends, which does not represent a random sample.

She tried to show cause and effect without doing an experiment (which includes simple random sample, control group, treatment, etc).

So the answer is she did not use a random sample, and tried to show cause and effect with an observational study.

Answer:

She did not use a random sample, and she tried to show cause and effect with an observational study.

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Jeff found 3 times as many seashells as his sister. Jeff found 39 seashells. How many seashells did his sister find? Write an equation to represent the situation. Then solve the equation to answer the problem.