Answer:
x = -2
Step-by-step explanation:
Subtract the 8 from both sides
5x = -10
And divide 5 from both sides
x = -2
Answer:
3^11
Step-by-step explanation:
X= 1 ×5/1.5
x=3.3 miles
Janay jogs 3.3 miles in 1 hour
Answer:
The function f(x) = 1/5x2 – 5x + 12 is a quadratic function, because the higher exponent is 2.
The correct statements are:
- The value of f(-10) = 82
- The graph of the function is a parabola
- The graph contains the point (20,-8)
Step-by-step explanation:
- The value of f(-10) = 1/5(-10)2 – 5(-10) + 12 = 1/5(100)+50+12 = 82 (<em>True</em> s<em>tatement</em>).
- The graph of the function is a parabola, as all the quadratic functions. (<em>True</em> s<em>tatement).</em>
- The graph of the function opens down: The parabola opens up or down depending on the "a". It is the important part of the function that determines whether it opens up or down, the parabola will open up when "a" is greater than zero.
When "a" is smaller than zero the parabola will open down. In our example a = 1/5 (greater than zero, so the parabola opens up). <em>(False Statement)</em>
- The graph contains the point (20,-8). For f(20) = 1/5(20)2 - 5(20) +12 = 1/5(400) - 100 + 12 = 80 - 100 + 12 = -8 <em>(True Statement).</em>
- The graph contains the point (0,0). For f(0) = 1/5(0)2 - 5(0) + 12 = 12, the correct point is (0,12) <em>(False Statement)</em>.
Well, to start this off- you have three journals. Each one weighs 380 grams. To solve this you have to multiply the weight of each journal with the amount of journals you have. And your answer should be 840
