3 years ago

Kay added 253 + 14 and got a sum of 393. What did she do wrong? Check all that apply.

1 answer:

3 0

Answer:

She did not correctly add up the numbers

Step-by-step explanation:

253 + 14 = 267

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disa [49]

Answer:

QRT = 47, TRS = 133

Step-by-step explanation:

Since QRS is a line, QRT + TRS = 180.

$QRT+TRS=180\\3x+5+10x-7=180\\$

Then, solve for x. Combine like terms.

$13x-2=180\\13x=182\\x=14$

Then, plug in 14 for x.

$1. (3*14+5)\\\\QRT = 47\\\\2. (10*14-7)\\\\TRS = 133$

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