The half-life of a radioactive kind of lanthanum is 93 minutes. How much will be left after 279 minutes, if you start with 2,064 grams of it?

24 is 50% of what number

Aliya draws a scale model of her mother's garden. The actual garden's measurements are 35 feet by 50 feet. On the drawing, the length of the garden is 5 inches. What is the width of the garden on the scale drawing? 3.5 in. 2.0 in. 2.5 in. 3.0 in.

How can you solve radical equations and identify situations where extraneous solutions will arise?

Probability of A 0.60 or B 0.45 the probability either is 0.80 find the probability of both

There are 12 students in a band the guy wants so the 14 students marched in each row how many rows will there be

Factor 9x^2+66xy+121y^2

Im having trouble with this question The ninth grade class has a ratio of 4 boys to 5 girls. If there are 630 students in the grade, how many are boys?

1. Write an equation to model the data in the table. x | y 0| 3 1 | 5.3 2| 7.6 3| 9.9 4| 12.2 A. y = 2.3x^2 + 3 B. y = 2.3x + 3 C. y = 2.3x X 3^x D. y = 3x 2. Write an equation to model the data in the table. x | y 0| 1.4 1 | 4.2 2| 12.6 3| 37.

Find the perimeter and area of a rectangle of cardboard measuring 18.2 cm by 6.2 cm

4.648 numeric form to expanded form with decimals