Which of these shows the result of using the first equation to substitute for y in the second equation, then combining like terms?

y = 3x

2x + 3y = 55

A. 11x = 55

B. 5x = 55

C. 9x = 55

D. 5y = 55

The box plots show the average speeds, in miles per hour, for the race cars in two different races. Average Speeds of Cars in Race A 120 125 130 135 140 145 150 155 160 165 170 Average Speeds of Cars in Race B One-half of cars travel at which speeds?

What is 35/50 simplified

1. 2cos I - 2x + 43 cos4x = 4 cos x-1 2. 4 sin + cos + 3 = 4cos cos) 3. 2cos2x+3cosx=2cos3x = 4sinx sin 2x 4. 2 + 3 (sin 2x-3sin x = cos 2x+3cosx 5. 2cos^x+2/3 sin x cosx+1=3 (sin x + V3 cos x)

15/5 as a mixed number

Find the area and the circumference of a circle with radius 3ft Use the Value 3.14

Describe two real life situations that uses parallel lines?

At many golf clubs, a teaching professional provides a free 10-minute lesson to new customers. A golf magazine reports that golf facilities that provide these free lessons gain, on average, $1 comma 700 in green fees, lessons, or equipment

Multiply 8 by the sum of 4 and 2

Which two numbers add up to - 11 that multiply to - 432?

Ou are having a family-barbeque. In attendance are a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law and one