Anything divided by 5 is the same as multiplying by 0.2, so double it and divide it by ten -2.4
Answer:
-15
Step-by-step explanation:
y = (x+5)^2 + 5
y = x^2 +10x +25 +5
y = x^2 +10x +30
.
You know this is a parabola. So find several values of x to calculate values of y.
.
The axis of symmetry is where x = -b/2a.
-10/2 = -5
.
The vertex is where the parabola ends. It occurs on the axis of symmetry.
y = (-5)^2 +10(-5) + 30
y = 25 -50 + 30
y = 5
.
Pick several points to either side of the vertex.
x = -4, y = 6
x = -6, y = 6
x = 0, y = 30
x = -10, y = 30
x = 5, y = 105
x = -15, y = 105
Answer:
28 km
Step-by-step explanation:
One leg = 35 km
Second leg = 21 km
We need to find the length of the missing leg. Using Pythagoras theorem, we can find it.
Hypotenuse² = base² + perpendicular²
So, the length of the missing leg is equal to 28 km.
<span>30 + 2 + 0.04 + 0.003</span>
The error rate has decreased after changing the painting process.
<u>Step-by-step explanation:</u>
Abdulla knows that 20 percent of the parts have an error in their painting. After suggesting changes in painting process, he wants to know whether the error rate has changed.
Number of parts in the random sample=400400400
Number of parts that had an error=606060
We have to determine what percentage of 400400400 is 606060
After changing the painting process 0.15% of parts have error.
The previous percentage was 20.Hence the error rate has clearly changed.