Answer:
3x+38
Step-by-step explanation:
1. (10x2 +5x-3)+(7x2 -2x+7) : rewrite problem
2. (20+5x-3)+(14-2x+7) : PEMDAS (10x2=20 and 7x2=14)
3. (5x+17)+(-2x+21) : PEMDAS (20-3=17 and 14+7=21)
4. 3x+38 : Combine like terms
Answer:
B
Step-by-step explanation:
B because the y-intercept is (0,-1) and another point is (5,9). Using the slope formula, 10/5=2 so the right equation is B.
Answer:
85
Step-by-step explanation:
think about the diagonal of the frame, breaking up a rectangle into 2 right angled triangles. we are already given the legs of the triangle (77, and 36) and now we have to solve fro the hypotenuse (or the diagonal). so use pythagorean theorem :
77^2 + 36^2 = c^2
7225 = c^2
c = 85
Answer:
60
Step-by-step explanation:
1/3 of 60 is 20
in other words
20 x 3 = 60
2/9 - 7/12
First, multiply to find a common denominator. Multiply both pieces of the left fraction by 12, and both pieces of the right fraction by 9.
24/108 - 63/108 = -39/108 = -13/36
a= -13
b= 36
