6r + 7 = 13 + 7r solve for missing variable

If y = kx, what is the value of k if y = 20 and x = 0.4?

What is work shown for 4n - 9 = - 9

Solve the linear equation with any method. 4x-7y=18 9x+14y=40

A man has x matches in a matchbox. On Monday he uses one-quarter of the matches On Tuesday he uses five more. How many matches has he used? How many has he left?

A student is interested in becoming an actuary. The student knows that becoming an actuary takes a lot of schooling and will have to take out student loans and wants to make sure the starting salary will be higher than $55,000/year.

The yearly sales of candles decreased from 560 to 476. By what percentage did the candle sales decrease?

1000 student and 0.825 participants in sports how many students participate

Select true and false for each question. a.) LN (x^a) = a + LN x b.) LN sqrt of 3 (xy) = 1/3 (ln x + ln y) c.) (ln a) ^3b = 3b ln a d.) log_a b^2 = (log_a b) ^2

Kerry weights 58g what is her approximate weight in pounds

Which of the following equations has only one solution? 0x²=9 x (x - 1) = 9 x2 - 6x + 9 = 0