Answer:
x = 5, -1
Step-by-step explanation:
0 = 3x^2 - 12x - 15 or
3x^2 - 12x - 15 = 0
By solving for x, use the Quadratic Formula.
… x = 5 and/or -1
Answer:
Step-by-step explanation:
The easiest way is to use the distributive rule. 15¾ = 15+ ¾
15¾*8 = (15+¾)8 = 15*8 + ¾*8 = 120+6 = 126
Answer:
30 mph
Step-by-step explanation:
train stopped after 520 miles
780 miles to go
stopped at 20 hours
stopped for 4 hours
34 hours used up...
26 hours left
780 miles to go
780 miles/26 hrs = 30 m/hr
Answer:
11
Step-by-step explanation:
3 x 4 ÷ 6 + 3²
multiply 3 and 4 to get 12
+3²
divide 12 by 6 to get 2
2+3²
find 3 to the power of 2 to get 9
2+9
Add 2 and 9 to get 11
11
hope this helps!
Answer: C . 147π / 4 mi²
Concept:
The sector is the part of a circle is enclosed by two radii of a circle and their intercepted arc.
A = (θ / 360) πr²
θ = angle of the sector
π = constant
r = radius
Solve:
<u>Given variable</u>
θ = 270°
r = 7 mi
<u>Given formula</u>
A = (θ / 360) πr²
<u>Substitute values into the formula</u>
A = (270 / 360) π (7)²
<u>Simplify exponents</u>
A = (270 / 360) π 49
<u>Simplify by multiplication</u>
A = (147 / 4) π
A = 147π / 4
Hope this helps!! :)
Please let me know if you have any questions
