Answer:
Rate = 91 km/hr
Step-by-step explanation:
In this question, Rate = Speed
Speed (s) = Distance (d) / time (t)
Distance = 600 km
Time = 3 hrs for both cars
Speed for car A = x
Speed for car B = (18+x)
Distance traveled for car A = x* 3
Distance traveled for car B = (18+x)* 3
Remember that the total distance traveled = 600 km
3x + 3*(18+x) = 600
3x + 54 + 3x = 600
6x = 600 - 54 = 546
x = 546/6 = 91
Speed of the slower car is 91 km/hr.
Answer:
Could you show an image of the shapes?
Step-by-step explanation:
Hope you respond soon! :D
Answer:
Random samples
Counts of successes and failures at least 15 each for each group.
Step-by-step explanation:
For making any inferences about the differences of the two independent population proportion, we assumed that the samples are of random and the counts of the success and the failures are at least 15 each for each of the groups.
From such assumption of the randomness, the observations in the population 1 will not be affected by the observations in the population 2, and also vice versa.
The assumptions of the counts refers tot he samples from each population that are big enough to justify by the normal distribution in order to model the differences between the proportions.
Therefore the assumptions that we need to make are:
-- Random samples
-- Counts of successes and failures at least 15 each for each group.
So basically the perimeter of a parallelogram is
2*length + 2*width
Or, in this case, once you substitute everything in,
2 * (3x + 9) + 2 * (4x - 5)
Use the distributive property, to distribute the 2s to everything inside the parenthesis.
2 * 3x + 2 * 9 + 2 * 4x + 2 * -5
6x + 18 + 8x - 10
Then just add everything
14x + 8 = perimeter
Answer:
1. X=35 degrees obtuse
2 x=25 degrees right
Step-by-step explanation:
Background info:
The measures of the angels of every triangle is 180 degrees
So x equals 180 minus the other angles combined
1. X=180-(40+105)
X=180-145
X=35 degrees
2.
x=180-(90+65)
x=180-155
x=25 degrees
