So,
This is simply subtraction.
26.2 - 18.5 = 7.7 mi.
This is exact.
However, if you wanted to round to the nearest mile, it would look like this:
26 - 19 = 7 mi.
This is because in 26.2 mi., 2 is less than 5, and in 18.5 mi., 5 is greater than or equal to 5.
This is rounding to the nearest mile.
Number one: Just plot down on the number like the numbers you have. Just took the test for this.
Answer:
20 feet
Step-by-step explanation:
48 inches is equivalent to 2 feet
so basically 10 x 2 gets you 20 feet
Answer:
angle 1: 44 degrees
Angle 2: 44 degrees
Angle 3: 68 degrees
Step-by-step explanation:
since these triangles are isosceles the 2 bottom angles are equivalent
Also sup um of all three angles of a triangle equal 180 degrees
We know 2 angles of the triangle to the left and they are both 68 degrees so to find angle 1 we multiply 68 by 2 first
68x2
136
Now subtract 180 from that
180-136
44 degrees is angle 1
Angle 2 is equal to angle 1 since it’s across like that
So angle 2 is 44 degrees
And since they both are isosceles we know angle 3mis 68 degrees also since the 2 bottom angles have to be the same
Hopes this helps please mark brainliest
Answer:
There is significant evidence to conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.
Step-by-step explanation:
Given the data :
6.2 7.1 5.4 5.5 7.5 2.6 4.3 2.9 3.7 0.7 5.6 1.7
The hypothesis:
H0: μ = 3.2
H1 : μ > 3.2
n = sample size = 12
The sample mean, xbar = ΣX / n
xbar = 53.2 / 12
xbar = 4.43
Using calculator;
Sample standard deviation, s = 2.147
The test statistic :
(xbar - μ) ÷ (s/sqrt(n))
(4.43 - 3.2) ÷ (2.147/sqrt(12)
1.23 / 0.6197855
Test statistic = 1.985
The Pvalue using the Pvalue from Tscore calculator :
Tscore = 1.985 ; df = 12 - 1 = 11
Pvalue = 0.036
Since Pvalue < α ; We reject the Null
Hence, we conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.