Ramdom question can device and tecnology cause ADHD

Sin (x-20) = 1/root2 This question is confusing me.

There were 25 words on a recent vocabulary test in English class, and Owen got four words wrong. What percent did he get wrong?

What is the difference 1/9 - 5/6 a 13/18 b 1/18 c - 1/18 d - 13/18

Tom bought 9 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now only 25 cards left. How many cards did Tom start with? Put it in a two step equation

Tim Worker is checking his earnings statement. His weekly earnings are $420.00. If he claims no exemptions, how much tax is withheld? $21.07 $22.15 $23.23 $24.31

Linear Equations 2n+2=16

Jess recently started a business producing cosmetic products made from natural ingredients. She wants to advertise her products by distributing bags of samples in her neighborhood. She calculated that it takes a person 2 minutes to prepare one bag.

Solve the equation 5/7d=2/3

The ratio of the side lengths of a quadrilateral is 2:3:5:6 and its perimeter is 48 cm. What is the length of the longest side?

Two experiments are defined below. An event is defined for each of the experiments. Experiment I: Sarah flips a fair coin twice. Event A: Sarah flips heads both times.