Solve system of linear equations by substitution - 2x+9y=15

x+7=4

How can you solve 0.01*30

Find the sum: 2 1/3+1 3/4

If a square + b square + c square=90, a+b+c=20 find the value of ab+bc+ca

X^2 + 6x = - 9 factor

Least common multiple of 5, 25, 65

How do I Write 157.50 earned in 15 hours as a unit rate per 40-hour worksheet

The isotope cobalt-60 has a nuclear mass of 59.933820 u Calculate the binding energy of cobalt-60 using the following information. Mass of Proton: 1.007825 u Mass of Neutron: 1.008665 u 1 u = 931.5 MeV

2 times a number plus 3 equals one half a number plus 12

Seven-tenths of a number decreased by thirteen is equal to three-tenths the number increased by 13

Numbers on the y-axis increase in which direction on a coordinate plane? a. Down b. To the left c. To the right d. Up