X + (2x+15) = 90 how to solve this math equation

In △ABC, a=34, b=18, and c=17. Find m∠A. A. 14.1 B. 132.6 C. 152.5 D. 101.5

Twenty percent of what number is 100?

Michelle is filling out a form and needs to enter her height in meters. She knows that she is 145 centimeters tall. What value should she enter in the form?

Which statements are true about the ordered pair (1,2) and the system of equations? y=-2x+4 7x-2y=3 select all that apply. A. When (1,2) is substituted into the second equation, the equation is true. B.

A computer originally cost $540. The discount is 20%. What is the new sales price?

What is the equation of a line in slope-intercept form with a slope of - 3/4 and a y-intercept of - 2

What is y=-2x+1 y=-x^2+4

Leigh will use 16 connecting cubes to make a model of a playground. The model will be in the shape of a rectangle and will have a height of one cube. In how many different ways can Leigh make the model of the playground?

The ratio of chocolate cones to vanilla cones sold at an ice cream shop is 5:4. If 54 cones were sold, how many were chocolate?

62dividw 7 what remains number