Answer:
A.
Step-by-step explanation:
To get the answer, you will need to divide the number of bacterias that Culture A has by the number of bacterias that Culture B has.
Size=(8*104)/(4*104)
=2
So, A will be the correct answer. (I have corrected your answer's no. of bacterias that Culture B contains as 104.)
cuanto es la raiz cuadrada de 123
Answer:
11.0905365064
11.1 (rounded)
Step-by-step explanation:
[tex]\sqrt{123} =11.090[/tex]
Answer:
Step-by-step explanation:
11.0905365064
What two numbers multiply to get 18 but add to get -12
Answer:
-6+3[tex]\sqrt{2}[/tex] and -6-3[tex]\sqrt{2}[/tex]
Step-by-step explanation:
xy = 18
x+y = -12
y = -12-x
substitution method:
x(-12-x) = 18
-12x - x² - 18 = 0
-x² - 12x - 18 = 0
-(x² + 12x + 18) = 0
used quadratic formula:
(-12±√144 - 4(18)) ÷ 2
(-12 ± [tex]\sqrt{72}[/tex]) ÷ 2
(-12 ± 6[tex]\sqrt{2}[/tex]) ÷ 2
= -6 ± 3[tex]\sqrt{2}[/tex]
BRAINIEST TO WHOEVER RIGHT
Answer:
median is 8 it's always the middle, play the elimination game
What do the signs need to be to multiply to get a positive and add to get a negative ?
Which expression is equivalent to
30 - 20 ÷ x ⋅ 4?
30 - 20 ÷ (x ⋅ 4)
30 - (20 ÷ x) ⋅ 4
(30 - 20) ÷ x ⋅ 4
(30 - 20 ÷ x) ⋅ 4
Answer:
30 - (20 ÷ x) ⋅ 4
Step-by-step explanation:
No Solutions
2x + 9 + 3x + x =
One Solution
2x + 9 + 3x + x =
x +
Infinitely Many Solutions
2x + 9 + 3x + x =
Answer:
.
Step-by-step explanation:
HELP THE TEACHER IS ASKING FOR MY ANSWERS CUZ I WAS SUPPOSED TO DO IT AND I NEVER WAS PREPARED PLSSS HELP IM NEXT PLS DRAW IT FOR MEE :( EVEN IF ITS EDITED I WOULD APPRECIATE TYSM HAVE A GOOD DAY! (And if u don’t know 1 u don’t have to do both only one but pls try :(
Answer:
Hey I did a few for you :)
Step-by-step explanation:
Hope this helps!
Have a nice day<3
y=13 is a solution to the inequality y+4<16
Answer:
No
Step-by-step explanation:
First subtract 16 from both sides
y + 4 < 16y + 4 - 16 < 16 - 16y - 12 < 0 So 0 has to be greater than whatever is on the leftIf y = 13 is put into the inequality you get 13 - 12 < 0.What is ultimately true is that 1 < 0 Is 1 smaller than 0?No13 is not a solution to the original inequality.
what do I do and how
Answer:
f(x) is another way of saying "y", but when x is replaced with a number, it just means that x = that number.
Since A says to find f(7), it means that in this scenario, x = 7. So, 2x - 5 is turned into 2(7) - 5, which equals 14 - 5, which equals 9.
So, f(7) = 9.
You can then apply this to the rest of the numbers you are given.
I hope this helps! :)
what is the length of AC
Answer:
16
Step-by-step explanation:
Brianna has a balance of $8,000 on her credit card. After talking to a financial advisor, Brianna decided to get a loan from the bank and discontinue using her credit card. The bank will charge Brianna 3.5% interest. Which of the following could be used to calculate the total repayment on Brianna’s loan after 4 years if she has a monthly payment of $178.85?
A. 4(178.85)
B. 4(12)(178.85)
C. 4(12)(178.85) − 8000
D. 4(8000)(0.035)
which of with of the following would be the most appropriate unit to weigh a single medicinal pill
Answer:
hi, I need the weights provided in the question to answer this question
ABC is a right triangle. calculate the length of side BC (the hypotenuse)
Answer:
we have
C=(2,-1)
B=(-2,3)
since
BC is hypotenuse
length of BC=√[(-2-2)²+(3+1)²]=√32=4√2 units is your answer
30 is what percent of 500
Answer:
6%
Step-by-step explanation:
30/ 500 = x/100
30*100= 3,000
3,000 / 500 = 6
it would be 6% hope this helps
Multiply and simplify.
3/7 x 5/9
Answer:
[tex]\frac{5}{21}[/tex]
Step-by-step explanation:
1) [tex]\frac{3}{7} *\frac{5}{9}[/tex]
Reduce the numbers with the greatest common factor : 3
2) [tex]\frac{1}{7} *\frac{5}{3}[/tex]
Multiply the fractions.
3) [tex]\frac{5}{21}[/tex]
Derrick started a new job at McDonald's. He makes $10 per hour. Which
equation models his total weekly earnings y, in terms of the number of
hours he works x? *
Answer:
10x=y.
Step-by-step explanation:
10 represents the amount he earns an hour. X represents the number of hours so 10x. 10 times the amount of hours equals y (total amount of money)
Answer:
y = 10x
Step-by-step explanation:
The total earnings, y, is equal to the hourly rate, 10, times x, the hours worked.
y equals 10 times x, or, in equation form, y = 10x.
I hope this helps ^^
In a congressional district, 55% of the registered voters are Democrats. Which of the following is closest to the probability of getting less than 50% Democrats in a random sample of size 100?
Is this an example of a sample proportion OR a sample mean?
Answer:
sample mean
Step-by-step explanation:
Using the normal distribution and the central limit theorem, considering that this is a sample proportion, as we are dealing with percentages, it is found that there is a 0.1562 = 15.62% probability of getting less than 50% Democrats in a random sample of size 100.
Normal Probability DistributionIn a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
It measures how many standard deviations the measure is from the mean. After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X. By the Central Limit Theorem, the sampling distribution of sample proportions of a proportion p in a sample of size n has mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1 - p)}{n}}[/tex].In this problem:
55% of the registered voters are Democrats, hence [tex]p = 0.55[/tex].A sample of size 100 is taken, hence [tex]n = 100[/tex]The mean and the standard deviation of the sampling distribution of sample proportions are given by:
[tex]\mu = p = 0.55[/tex]
[tex]s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.55(0.45)}{100}} = 0.04975[/tex]
The probability of getting less than 50% Democrats in a random sample of size 100 is the p-value of Z when X = 0.5, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.5 - 0.55}{0.04975}[/tex]
[tex]Z = -1.01[/tex]
[tex]Z = -1.01[/tex] has a p-value of 0.1562.
0.1562 = 15.62% probability of getting less than 50% Democrats in a random sample of size 100.
To learn more about the normal distribution and the central limit theorem, you can take a look at https://brainly.com/question/24663213
What is the advantage of valence number?
Answer:
The presence of many unpaired electrons in the valence shell of an atom enables it to form multiple bonds with other atoms. The paired electrons present in the valence shell do not take participate in the formation of chemical bonds as per the valence bond theory.
what two numbers multiply to 16 and add to -10?
Answer:
-2 and -8
Step-by-step explanation:
-2 x -8 = 16
-2 + -8 = -10
Answer:
1 and -16
Step by step:
1 x -16 = -16
1 + (-16) = -15
2. A jeweler bought an antique watch for $500. He then sold it in his store $850. What was the percent of change in the price of the watch? Show work here A. 41.2% decrease B. 41.2% increase C. 70% decrease D. 70% increase
Answer:
70% increase
Step-by-step explanation:
Some answers on this app be useless asfff bro .. like no I’m not finna go to ur bitly link and download the answer file, we all know that sh!! Is a virus wish .Just answer the darn questions I don’t got the time I’m literally struggling in fron of my computer and u can’t even give a decent answer .. smh this is my rant so dw
Answer:
da.mn im sorry....not rlly sorry bc i didnt do anything to u but yh.
Step-by-step explanation:
A broker charges 70 per square foot to install windows how much does it cost to install the windows shown
Find the least common multiple of 6c^3 and 15y
Answer:
The answer is 30c^3y
Step-by-step explanation:
The LCM is the smallest number that all the numbers can divide in.
Keiko uses 6.9 pints of blue paint and white paint to paint her bedroom walls. 2/5 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?
Answer: [tex]4.14\ \text{pints}[/tex]
Step-by-step explanation:
Given
Keiko uses 6.9 Pints of blue and white paint
If the fraction of blue paint is [tex]\frac{2}{5}[/tex], then thr fraction of white paint is
[tex]1-\dfrac{2}{5}=\dfrac{3}{5}[/tex]
Amount of white paint is
[tex]\Rightarrow \dfrac{3}{5}\times 6.9=4.14\ \text{pints}[/tex]
when the base of a ladder is placed 10ft away from the base of a building, the top of the ladder touches the building at 18ft above the ground. About how long is ladder?
URGENT 30 POINTS An engineer needs to find the length of a beam to support the beam holding the wall. If the two beams are perpendicular to one another, and a=4 m and b=1 m, find z. Give your answer to one decimal place.
The value of z in the given arrangement is 2 m.
What are similar triangles?Similar triangles are the triangles that look similar to each other, but their sizes might not be exactly the same.
Also,
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion.
Given that, an engineer needs to find the length of a beam to support the beam holding the wall, the two beams are perpendicular to one another, and a=4 m and b=1 m, we need to find z.
So, here we will use the concept of similar triangles,
According to the definition the corresponding sides are in proportion.
So, we get,
z/a = b/z
z² = 4
z = 2
Hence, the value of z in the given arrangement is 2 m.
Learn more about similar triangles, click;
https://brainly.com/question/14926756
#SPJ2
easy algebra question below first correct answer gets brainliest if you put a link you will be blocked and reported
Answer:
option d is the correct answer
Some one please help me get the answer
If you get it correct, I will give you a lot of points
Answer:186
Step-by-step explanation:
I WILL GIVE BRAINLIEST PLEASE HELP FULLY (pt 2)
2. Mauricio plans on retiring in 20 years, and he wants to double his money by that time. He has contacted various banks, looking for a CD that compounds interest monthly, and to calculate what annual interest rate he needs, he is using the rule of 72. (3 points: Part I – 1 point; Part II – 1 point; Part III – 1 point)
Part I: What is the rule of 72? To represent the annual interest rate, use r.
Part II: What equation can Mauricio set up to solve for the annual interest rate he needs to double his money by the time he retires?
Part III: What annual interest rate does Mauricio need to double his money by the time he retires?
Answer: What expression can Melanie write to figure out how much her ... Mauricio plans on retiring in 20 years, and he wants to double his money by that time. He has contacted various banks, looking for a CD that compounds interest monthly, and to calculate what annual interest rate he needs, he is using the rule of 72.
Step-by-step explanation: I did what I could man
5. y=12
Point:
Slope:
What are or is the point. And what’s the slope
Answer:
Slope=0
Step-by-step explanation:
Point=Y