Answer:
A
Step-by-step explanation:
Use slope formula:
m = (y2 - y1) / (x2 - x1)
m = (-2 - 1) / (-3 - 1)
m = -3/-4
Negative + Negative = Positive
m = 3/4
An initial amount of 900 grows at a rate of 7% every month. Write an
exponential equation for the
amount y after x months,
Answer:
$75 because 900 divided by 12 is 75
Step-by-step explanation:
PLEASE HELP MEEEEEEEE.
Also can you explain how you got your answer
Answer:
the last option, 10,12,15
Step-by-step explanation:
for every 3 of something you have 5 of something else, so the ratio is 3:5. That means when you have 6, double the amount of 3, you have the double amount of 5, 10.
Answer:
10, 12, 15
Step-by-step explanation:
The atomic mass of a chemical element is the number of protons + number of neutrons in each atom of that element—electrons are ignored. Examples The atomic mass of hydrogen (H) is 1 (1 proton) and that of helium (He) is 4 (2 protons + 2 neutrons).
The gram atomic mass of a chemical element is the atomic mass of that element in grams. Example The gram atomic mass of H is 1 gram and that for He is 4 grams.
Astounding Fact There are approximately 6 x 1023 atoms in the gram atomic mass of every known chemical element. Examples There are 6 x 1023 atoms in 1 gram of H and in 4 grams of He. Hence, there are 12 x 1023 atoms, or 1.2 x 1024 atoms, in 2 grams of H and in 8 grams of He.
Standard carbon is Carbon 12, abbreviated C-12. Its atomic number is 12 (6 protons and 6 neutrons) and its gram atomic mass is therefore 12 grams.
How many atoms are there in 96 grams of C-12? (Read the exponents carefully.)
(a) 1.2 x 1024 atoms (b) 12 x 1023 atoms (c) 4.8 x 1023 atoms
(d) 4.8 x 1024 atoms (e) 96 x 1024 atoms (f) none of the above
Answer:
Step-by-step explanation:
First the gram will use the chemical explanation then you will put 1h gram the atomic mass .Then add 6 x 1023
Done done
7
8. 74%,
0.68
10'
7
0.68,
to
74%
10?
b. 0.68, 74%,
10
74%. 0.68
10
7
74%, 0.68
10'
When a certain basketball player takes his first shot in a game he succeeds with prob. 1/3. If he misses his first shot, he loses confidence and his second shot will go with prob. 1/4. If he misses his first 2 shots, his third shot will go with pro. 1/5. If he misses his first 3 shots, his fourth shot will go with prob. 1/6. If he misses his first 4 shots, the coach will remove hom from the game. Assume that the player keeps shooting until he succeeds or he is removed from the game. Let X denote the number of shots he misses until his first success or until he is removed from the game.
Required:
a. Compute the p.m.f. of X.
b. Compute E[X]
Solution :
Let the number of the shots that the player while playing misses until the first success = x
The random variable X can take the values {0, 1, 2, 3, 4}
[tex]$P(x=0)$[/tex] = probability of the player that does not misses the 1st shot
The probability of the player that he success at the 1st shot = [tex]$\frac{1}{3}$[/tex]
[tex]$P(x=1)$[/tex] = probability of the player that misses the 1st shot but succeeds in his 2nd shot [tex]$=\frac{2}{3} \times \frac{1}{4}$[/tex]
[tex]$=\frac{1}{6}$[/tex]
[tex]$P(x=2)$[/tex] = probability of the player that misses the 1st two shot but succeeds in the 3rd shot [tex]$=\frac{2}{3} \times \frac{3}{4}\times \frac{1}{5}$[/tex]
[tex]$=\frac{1}{10}$[/tex]
[tex]$P(x=3)$[/tex] = probability of the player that misses the 1st three shot but succeeds in the 4th shot [tex]$=\frac{2}{3} \times \frac{3}{4}\times \frac{4}{5} \times \frac{1}{6}$[/tex]
[tex]$=\frac{1}{15}$[/tex]
Similarly,
[tex]$P(x)$[/tex] = (probability of missing the 1st four shots) x (probability of removing te player after the 1st four shots missed)
[tex]$=\frac{2}{3} \times \frac{3}{4}\times \frac{4}{5} \times \frac{5}{6} \times 1$[/tex]
[tex]$=\frac{1}{3}$[/tex]
a). The p.m.f of the X
X = x 0 1 2 3 4
P(X=x) [tex]$\frac{1}{3}$[/tex] [tex]$\frac{1}{6}$[/tex] [tex]$\frac{1}{10}$[/tex] [tex]$\frac{1}{15}$[/tex] [tex]$\frac{1}{3}$[/tex]
b). [tex]$E(X) = \sum x \times P(X=x)$[/tex]
[tex]$= 0\times \frac{1}{3}+1\times \frac{1}{16}+2\times \frac{1}{10}+3\times \frac{1}{15}+4\times \frac{1}{3}$[/tex]
[tex]$=\frac{114}{60}$[/tex]
= 1.9
Bryan and Serena had the same amount of money initially. After Bryan donated $258 and Serena donated $234 to charity, Serena had 4 times as much as Bryan. How much had Serena in the end?
Answer:
Serena had $32 at the end.
Step-by-step explanation:
They both had x in the beginning.
Bryan donated $258, so now he has
x - 258
Serena donated $234, so now she has
x - 234
Serena now has 4 times as much money as Bryan.
x - 234 = 4(x - 258)
x - 234 = 4x - 1032
-3x = -798
x = 266
They both had $266.
$266 - $234 = $32
Answer: Serena had $32 at the end.
ms. Jackson's class is on a field trip to the museum of nature history.the cost for admission is$7per adult and$5per child
3) The product of 5 x2 and (2x)2 is
(5x)2 * (2x)2
10x * 4x
40x^2
In the diagram shown below segments TU and QS perpendicularly bisect each other at point R. Which of
the theorems below would be used to show that AQRT = ASRU?
Answer:
SAS
Step-by-step explanation:
I had this question on my test
Need help ASAP please
Answer:
x equals 9
Step-by-step explanation:
90 - 41 =49
49 - 22 = 27
27 ÷ 3 = 9
2.
Select the correct answer from the drop-down menu.
A coin is flipped 36 times. The least likely result for the coin to land on heads is
times.
Reset
Next
Answer:
30
Step-by-step explanation:
Just took the test
15. Maria uses 5 1/3 gallons of gas to drive to work and back four times.
a. How many gallons of gas does María use in one round trip
to work?
Answer:
1 1/3
Step-by-step explanation:
3. By using the table in question 2, write an equation to illustrate the relationship between the height of the tree and the number of years since it was planted. How tall will the tree be in 8 years?
Answer:
bro give us the table
Step-by-step explanation:
The sum of 5/2 and 6 times a number equals to 7/2 subtracted from seven times the number find the number
Answer:
1 / 13
Step-by-step explanation:
lets just say the number is 'x'
5/2 + 6x = 7/2 - 7x
6x + 7x = 7/2 - 5/2
13x = 2/2
13x = 1
x = 1/13
proving it
5/2 + 6 × 1/13 = 7/2 - 7 × 1/13
5/2 + 6/13 = 7/2 - 7/13, solving the fraction by finding the L.C.M will result in
77/26 = 77/26
HELP PLEASE!!!! 50 POINTS!!!GIVING BRAINLIEST!!
1. Elena donates some money to charity whenever she earns money as a babysitter. The table shows how much money, d, she donates for different amounts of money, m, that she earns.
a. What percent of her income does Elena donate to charity?
b.Which quantity, m or d, would be the better choice for the dependent variable in an equation describing the relationship between m and d.
PLEASE HELP!!! THANK YOU!!❤️
(a). Elena donates 12% of her income.
(b). d (amount donated) will be a better choice for the dependent variable, as it is always dependent on the income of Elena.
What is a dependent variable?You can control or set the independent variable. It affects the dependent variable, which changes as a result. The input is unrelated to the result, which is the dependent variable.
As per the given data:
money donated from money earned is given in the table.
For percent of her income donated to charity:
Total money donated / Total money earned
= (4.44 + 1.80 + 3.12 + 3.60 + 2.16) / (37 + 15 + 26 + 30 + 18)
= (15.12)/(126)
= 0.12
∴ Elena donates 12% of her income.
Hence, Elena donates 12% of her income and d (amount donated) will be a better choice for the dependent variable as it is always dependent on the income of Elena.
To learn more on dependent variable, click:
brainly.com/question/1479694
#SPJ3
Jack and Jill are 432 meters apart, but are walking towards each other. Joe walks at a pace of 2 meters per second, while Jill walks at a pace of 3 meters per second. After how many seconds will they meet up?
Answer:
86.4 seconds.
Step-by-step explanation:
Given that Jack and Jill are 432 meters apart, but are walking towards each other, and Joe walks at a pace of 2 meters per second, while Jill walks at a pace of 3 meters per second, to determine after how many seconds will they meet up, the following calculation must be performed:
432 / (3 + 2) = X
432/5 = X
86.4 = X
So, Jack and Jill will meet after 86.4 seconds.
I need help with 20!
Answer:
C
Step-by-step explanation:
4 boxes: $3.79 is $0.9475 or $0.95
a. 6 boxes: $5.79 is $0.95833333333 or $0.96
b. 2 boxes: $1.96 is 0.98
c. 3 boxes: $2.79 is $0.93
d. 1 box: $0.97 os $0.97
0.98 > 0.97 > 0.96 > 0.95 > 0.93
Answer:
3rd answer choice: 3 for $2.79
Step-by-step explanation:
“You bought 4 boxes of facial tissues for $3.79.Which is a better buy than the one you bought?”
First, find the individual box cost for the given amount in the question. Divide the total cost ($3.79) with the amount of boxes (4) to get the individual amount:
$3.79/4 = ~0.9475, or $0.95
The first answer choice looks like 6 boxes for $5.75. Divide 6 from $5.75:
$5.75/6 = ~0.9583, or $0.96 (1 cent more)
The second answer choice looks like 2 boxes for $1.96. Divide 2 from $1.96:
$1.96/2 = 0.98, or $0.98 (3 cent more)
The third answer choice looks like 3 boxes for $2.79. Divide 3 from $2.79:
$2.79/3 = 0.93, or $0.93 (2 cents less).
The fourth answer choice looks like 1 for $0.97.
$0.97 (2 cents more)
~
In this case, the cheapest one by individual costs is the 3rd answer choice, as it is the cheapest by individual boxes.
Please help I’m completely stuck
Answer: 8x
Question 2:Answer: 12x - 3y
hope it helps.
3) A grocery store has cereal on sale. If the original price is $4.50 and the sale
price is $3, what percent is the discount?
Step-by-step explanation:
original price = $4.50
sale price = $3
discount price = $4.50 - $3
= $1.50
discount = discount percent × original price ÷ 100
$1.50 = discount percent × $4.50 ÷ 100
discount percent = $1.50 × 100 ÷ $4.50
= 33.33%
--------------------------------FOLLOW METhere are six cups which each hold 340ml. What is the total ml
Answer:
2040ml
Step-by-step explanation:
Answer:
2,040
Step-by-step explanation:
1 cop =340
multiply 340 six times
the answer will be 2,040
A student would like to know what proportion of the text messages she sends are to her best friend. She selects a random sample of 50 text messages she sent and determines the proportion of those messages that are sent to her best friend. Which of the following statements is true? The population is all of her friends and the sample is the best friend about whom she is performing this study. The population is the best friend about whom she is performing this study and the sample is all of her friends. The population is the 50 text messages she randomly selected and the sample is all text messages she sent. The population is all text messages she sent and the sample is the 50 text messages she randomly selected.
The statement fourth "The population is all text messages she sent and the sample is the 50 text messages she randomly selected" is correct.
What is simple random sampling?Simple random sampling is a sampling strategy in which every item in the population has an equal probability of being chosen for the sample.
We have:
A student would like to know what proportion of the text messages she sends is to her best friend.
The number of sample methods she selects = 50 text messages
As the sample consists of the 50 texts she randomly chose from the population of all the texts she sent.
Thus, the statement fourth "The population is all text messages she sent and the sample is the 50 text messages she randomly selected" is correct.
Learn more about the simple random sampling here:
brainly.com/question/13219833
#SPJ1
Please I need a surely answer and a quicker response
Answer and I will give you brainiliest
Answer:
4
1
5
2
My answers.
I hope this helps
A rectangular banner measures 3 ft by 7 ft. How much material do you need for seven banners?
Simplify your answer
Answer:6
Step-by-step explanation:
10-:1(2)/(3)
Answer:
6 batches
Step-by-step explanation:
To find how many batches you would divide 10 by 1 and 2/3
10 ÷ 1 and 2/3 = 6
Look at the image to see division:
Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making mistakes
Hi there!
[tex]\large\boxed{=7.5}}[/tex]
10 - 5c =
Solve by substituting in 0.5 for c:
10 - 5(0.5) =
Evaluate 5 · 0.5:
10 - 2.5 =
Solve:
10 - 2.5 = 7.5
Factor 4x2 + 4x + 1.
Answer:
(2x+1)²= (2x+1)(2x+1)
Step-by-step explanation:
(2x)²+2×2x×1+1²=(2x+1)²
please help me out with this
if a number has 20 as a factor, what other factors do you know that it must have
It would also contain all the factors of 20:
1, 2, 4, 5, 10
Please need help on this not too sure on it.
1.) What are the x- and y-intercepts of this equation: 4x-y=12
2.) Using the x- and y- intercepts, sketch a graph of this equation: -4x+8y=16
Answer:
Step-by-step explanation:The graph of 4x – 3y = 12 is the line that crosses the x-axis at the point (3, 0) and the y-axis at the point (0, –4). x = 3 The x-intercept is 3.
the slope-intercept form, the slope is 0 .