Mathematics, 18.01.2021 20:30 Mathinator

If 2x(x-y)=54 and x=9, then y=

A. 6
B. 3
C. 2
D. 1

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:30, terryg4397

After two years, how much has been paid into interest?

Answers: 1

continue

Mathematics, 21.06.2019 18:00, dlaskey646

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Answers: 1

continue

Mathematics, 21.06.2019 21:30, amesha62

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Answers: 1

continue

Mathematics, 21.06.2019 22:30, Backfire3607

Using the figure below, select the two pairs of alternate interior angles. a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7

Answers: 2

continue

You know the right answer?

If 2x(x-y)=54 and x=9, then y=

A. 6
B. 3
C. 2
D. 1...