Write using algebra.

If Jim is x years old now, and his sister is twice as old, how old was his sister 7 years ago?

There are 200 student in middle school and three fifths of them are girls how many are boys?

1. Valley Savings and Trust pays 5% interest compounded quarterly on regular savings accounts. Leland Davis deposited $2,000 in a regular savings account. He made no other deposits or withdrawals during the interest period a.

Gary is paid $15.50 per hour in addition to a weekly salary of $50. This week he wants to earn more than $400. Write an inequality to represent this situation. Use h as the variable.

A box contains five keys, only one of which will open a lock. keys are randomly selected and tried, one at a time, until the lock is opened (keys that do not work are discarded before another is tried).

How do you write 5x 4y=4 in slope-intercept form

odún and aderonke have 6:4 in 80 units of transcorp's share. how many units of this shares belong to odún

What is 49:21 lowest form

N two days, 48,000 gallons of oil gushed out of a well. At what rate did the oil flow from the well?

Which of the following is the equation of a circle with a radius of 5 cm and center at (3, 6) ? (x 3) 2 + (y + 6) 2 = 10 (x 3) 2 + (y + 6) 2 = 25 (x + 3) 2 + (y 6) 2 = 25 (x + 3) 2 + (y 6) 2 = 10

A sociologist studying the difference in ages between husbands and wives obtained a random sample of 55 married couples. The mean of the husbands' ages was 38.5 years with standard deviation 12.6 years. The mean of the wives' ages was 36.