Answer:
The answer is <u>9</u>
<u>Explanation</u><u>:</u><u> </u>
0.5a+8.75=13.25
We simplify the equation to the form, which is simple to understand
0.5a+8.75=13.25
We move all terms containing a to the left and all other terms to the right.
+ 0.5a=+13.25-8.75
We simplify left and right side of the equation.
+ 0.5a=+4.5
We divide both sides of the equation by 0.5 to get a.
a=9
Answer:
1.The sum of thrice a certain number and six is greater than twenty seven.
2. Three times a certain number added to six the result is greater than twenty seven.
Step-by-step explanation:
The inequality whose word problem to be written is 3x + 6 > 27
Let x be a certain number.
So, we can write the following as the word problem of the inequality :
1.The sum of thrice a certain number and six is greater than twenty seven.
2. Three times a certain number added to six the result is greater than twenty seven.
So legnt=l
width=w
l=-7+3w
l=3w-7
area=66
area=legnth times width or
area=lw
subisutte
area=lw
l=3w-7
66=(3w-7)(w)
66=3w^2-7w
subtrac 66 from both sides
0=3w^2-7w-66
factor
HOW TO
multiply 3 and -66=-198
find what 2 numbers add up to -7 and multiply to get -198
the numbers area 11 and -18
so
3w^2-18w+11w-66=0
factor
(3w^2-18w)+(11w-66)=0
(3w)(w-6)+(11)(w-6)=0
factor using distributive (ab+ac=a(b+c))
(3w+11)(w-6)=0
set them to zero
3w+11=0
subtract 11
3w=-11
legnths cannot be negative so we discard this
w-6=0
add 6
w=6
width=6
legnth=3w-7
length=3(6)-7
legnt=18-7
legnth=11
width=6
legnth=11
Answer:
The statistical test to use in comparing the number or words spoken for people with and without licenses is independent sample t test.
Step-by-step explanation:
The sample test to use is an Independent Samples t Test. The reason for using this statistical test is because it takes two independent groups; calculates and compares the means of these groups so as to determine if statistical evidence exists such that the associated population means are significantly different.
In this case, there are two groups of passengers (40, in total);
Group 1 are those who have driving licence while group 2 are those who do not.
Depending on the response from these two groups, the independent sample t test calculates the mean and compares the number or words spoken for people with and without licenses to know passengers experience.
Answer:
<em>Math will take over Ana's brain at 4.4 hours</em>
Step-by-step explanation:
<u>Exponential Grow
</u>
The population of the nanobots follows the equation
We must find the value of t such that the population of nanobots is 106 or more, that is
We'll solve the equation
Dividing by 5
Taking logarithms
By logarithms property
Solving for t
Math will take over Ana's brain at 4.4 hours
