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Posljednje ažuriranje about 2 years ago
11
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1. Jada says that she can tell the expression equals 0 just by looking at it. Is Jada correct?
Explain or show how you know.
3. For each situation, write an expression for the new balance using as few terms as possible.
a) A checking account has a balance of -$126.89. A customer makes two deposits, one 3 & 1/2 times the other, and then withdrawl $25.
3. For each situation, write an expression for the new balance using as few terms as possible.
b) A checking account has a balance of $350. A customer makes two withdrawals, one $50 more than the other. Then he makes a deposit of $75.
4b. Explain what he did wrong.
5a. If (11+x) is positive, but (4+x) is negative, what is one number that x could be?
5b. If (-3+y) is positive, but (-9+y) is negative, what is one number that y could be?
5c. If (-5+z) is positive, but (-6+z) is negative, what is one number that z could be?
EXIT TICKET
Match each expression in column A with an equivalent expression from column B.
Show or explain your reasoning.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
8r+7t | arrow_right_alt | b) (12r + 2t) - (4r + 10t) |
8(r-t) | arrow_right_alt | c) 12(r+t) - 6(r+t) + 4(r+t) -2(r+t) |
8(r+t) | arrow_right_alt | a) 12r + t - 4r + 6t |
4. Tyler is using the distributive property. Look at his work. Mai thinks Tyler's answer is incorrect. She says, "If the expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?"
a) Find the step where Tyler made an error.
*In the show your work section, plug in 1 for x and show your work. This will help you find the step where Tyler made his error.
4c. Correct Tyler's work.