Answer:
7x^2-x-14
Step-by-step explanation:
Answer:
hi, first question's answer B.
because if you want to draw a triangle, there is have to be some rules. like can you draw a triangle 2,2,20? that could be impossible because all the edges have to intersect. think a triangle and it has 3 edges. they are A,B,C
if you wanna write random numbers, you have to do this.
A+B>C>|A-B|
A+C>B>|A-C|
C+B>A>|C-B|
soo, 7+11= 18 and 11-7=4
second question's answer is this:
60+x+32+90=180(if you wonder where is the 90 came from, the triangle's one side has square. that mean its 90°.
182+x=180
x=-2
if you have questions about these questions, you can ask me.
good luck(:
X+(x-5) +(x-10) ...
This adds up to 8x -140 seconds where x is the 1st race time.
This adds up to 44:20 minutes
44mins * 60 sec/min = 2640 seconds + 20 = 2660 seconds cummulative
8x - 140 = 2660 8x =2800 sec
8x = 350 seconds or 4.5mins for the 1st race
Race 2: subtract 5 seconds yields 4 mins 25 seconds
An odd plus an odd can yield an even
7+7=14
a prime plus a prime can yield a composite
5+7=12
a multiple of 3 and a multiple of 3 will always yield a multiple of 3
3(n) + 3(m) =3(n+m)
Answer:
59.48%
Step-by-step explanation:
To determine the probability you have to calculate the z score which is equivalent to the number of standard deviations you are from the mean.
x is the value you want to know its probability
μ is the mean
σ is the standard deviation
A z score of -0.24 means you are 0.24 standard deviation at the left of the mean, the probability associated to a z of -0.24 can be found in a z table and it is 40.52%.
That probability cover the minimum value until 12 minutes, so the probability to need more than 12 minutes is 100 - 40.52 = 59.48%
