Answer:
B, 21
Step-by-step explanation:
78 minus 57 is 21, thus B is the correct choice
Answer:
-2
Step-by-step explanation:
(-6-4)/-5=
-10/5= -2
Answer:
Step-by-step explanation:
Distance = speed × time
A car from Alphaville to Betaville is moving at a speed of sixty-two miles per hour. This means that after two and a half hours, the distance that this car would have covered is
62 × 2.5 = 155 miles
Another car from Betaville to Alphaville is moving at a speed of fifty-seven miles per hour. This means that after two and a half hours, the distance that this car would have covered is
57 × 2.5 = 142.5 miles
A and B represents Alphaville and Betaville as well as the first and second cars. The total distance covered by both cars is
155 + 142.5 = 297.5 miles
The distance between both cars after two and a half hours is
725 - 297.5 = 427.5 miles
Answer:
Answer and Explanation:
The decimal 0.55 is a rational number. It is a terminating decimal and all terminating decimals are rational numbers since they can be expressed by a..
Step-by-step explanation:
The equation of the line is the vertical line x = 3.
<h3>The gradient of the line</h3>
The gradient of the line between two points (x₁, y₁) and (x₂, y₂) is m = (y₂ - y₁)/(x₂ - x₁).
Since the line passes through the points (3,-3) and (3,8),
- (x₁, y₁) = (3,-3) and
- (x₂, y₂) = (3,8).
So, substituting the values of the variables into the equation, we have
m = (y₂ - y₁)/(x₂ - x₁).
m = (8 - (-3))/(3 - 3).
m = (8 + 3)/0
m = 11/0
m = +∞
<h3>Equation of the line in point-slope form</h3>
The equation of the line passing through the point (x₁, y₁) in point-slope form is given by
y - y₁ = m(x - x₁) where
- m = gradient = +∞ and
- (x₁, y₁) = (3, -3)
So, substituting the values of the variables into the equation, we have
y - y₁ = m(x - x₁)
y - (-3) = +∞(x - 3)
y + 3 = +∞(x - 3)
y + 3/+∞ = (x - 3)
0 = x - 3
x = 3
So, the equation of the line is the vertical line x = 3.
Learn more about equation of a line in point-slope form here:
brainly.com/question/24907633
