Answer:
Step-by-step explanation:
Area of a triangle is base times height divided by 2.
The appropriate unit is meters.
535 centimeters because of the decimal places
Answer: y = 0.45x + 21
Step-by-step explanation:
let x represent the number of minutes used in a month.
Let y represent the monthly cost for x minutes.
If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be
Slope, m = (304.5 - 183)/(630 - 360)
m = 121.5/270 = 0.45
The equation of the straight line can be represented in the slope-intercept form, y = mx + c
Where
c = y intercept
m = slope
To determine the y intercept, we would substitute x = 360, y = 183 and m = 0.45 into y = mx + c. It becomes
183 = 0.45 × 360 + c
183 = 162 + c
c = 183 - 162
c = 21
The equation for the monthly cost is
y = 0.45x + 21
Answer: B
Step-by-step explanation:
Let's analyze each option:
A) We know all the sides:
Ok, if we know all the sides, we can make only one triangle with it, so this defines only one triangle:
B) We know only the angles, all the angles are the same so this is an equilateral triangle, now we can make infinity equilateral triangles if we change the length of the side, so this criterion makes more than one triangle.
C) We have two angles (so we basically have 3 angles, because all the angles of a triangle must add up to 180°) and one side, so the other two sides are defined already, with this we can make only one triangle.
D) Two sides and one included angle (meaning that this angle goes between the two known sides)
With this, we already can find the missing side and then the complete triangle, so this criterion only defines one triangle.
Answer:
Step-by-step explanation:
What equation??
