Answer:
I think the answer is 45/4 i'm so sorry if the answer is wrong
Step-by-step explanation:
Answer:
11 1/4
Step-by-step explanation:
What is the value of y in the equation 2(3y + 7 + 5) = 196 − 16?
Answer:
y = 26 I think lol
Step-by-step explanation:
2(3y + 7 + 5) = 196 - 16
196 - 16= 180
2(3y + 7 + 5) = 180
6y + 14 + 10 = 180
6y + 24 = 180
6y = 180 - 24 = 156
6y = 156
y = 156 divided by 5
y= 26
Find the slope of the line.
A. -1/3
B. 1/3
C. 3
D. -3
The number of bacteria in a refrigerated food product is given by N(T) = 26T2 - 123T + 25,
5
When the food is removed from the refrigerator, the temperature is given by T(t) = 4t + 1.2 , where t is
the time in hours.
Find the composite function N(T()):
N(T()) 26( T - t)2 – 123(1)
syntax error.
Find the time when the bacteria count reaches 16044. Give your answer accurate to at least 2 decimal
places.
Time Needed = 10845768.99233358
hours
Question Help: Message instructor
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Answer:
(A)
N(T(t)) = 416t² - 242.4 - 135.16
(B)
Time = 27.30 hours
Step-by-step explanation:
Given
N(T) = 26T² - 123T + 25
T(t) = 4t + 1.2
Solving for the composite function.
Substitute T for 4t + 1.2 in N(T)
N(T(t)) = 26(4t + 1.2)² - 123(4t + 1.2) + 25
N(T(t)) = 26(4t+1.2)(4t + 1.2) - 123(4t + 1.2) + 25
N(T(t)) = 26(16t² + 9.6t + 1.44) - 492t - 147.6 + 25
N(T(t)) = 416t² + 249.6t + 37.44 - 492t - 172.6
N(T(t)) = 416t² + 249.6t - 492t + 37.44 - 172.6
N(T(t)) = 416t² - 242.4 - 135.16
Solving for time.
We have that
N(T) = 16044
N(T) = 26T² - 123T + 25
This gives
16044 = 26T² - 123T + 25
26T² - 123T + 25 - 16044 = 0
26T² - 123T - 16019 = 0
Solve by quadratic, we have.
T = 27.299506396472
Or
T = -22.568737165703
Since time can't be negative
T = 27.299506396472
T = 27.30 (approximately)
Which is a solution to the quadratic equation 1/4x^2 - x - 8 = 0?
Answer:
its -x-15/2
I'm not sure this is correct but I think that's the answer
Which must be true?
Answer:
i think its C
Step-by-step explanation:
Examine the three graphs shown below. Which graphs have the same domain
27.5% of US adults are college graduates.
A) Use StatKey or other technology to generate a sampling distribution for the sample proportion of college graduates using a sample size of n = 5. Generate at least 1000 sample proportions. Give the center of the sampling distribution and give the standard error.
B) Repeat part (a) using a sample size of n = 500.
C) If we took many samples of size 50 from the population of all inductees and recorded the proportion who were performers for each sample, what shape do we expect the distribution of sample proportions to have where do we expect it to be centered?
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
center is 0.275
[tex]SE = 0.063[/tex]
b
center is 0.275
[tex]SE = 0.020[/tex]
Step-by-step explanation:
considering question a
From the question we are told that
The sample size is n = 50
The proportion of US adults are college graduates is p = 0.275
Generally the center is equivalent to the proportion so the center is 0.275
Generally the standard error is
[tex]SE = \sqrt{\frac{p * (1- p)}{ n} }[/tex]
=> [tex]SE = \sqrt{\frac{0.275 * (1- 0.275)}{ 50} }[/tex]
=> [tex]SE = 0.063[/tex]
considering question b
The sample size is n = 500
The proportion of US adults are college graduates is p = 0.275
Generally the center is equivalent to the proportion so the center is 0.275
Generally the standard error is
[tex]SE = \sqrt{\frac{p * (1- p)}{ n} }[/tex]
=> [tex]SE = \sqrt{\frac{0.275 * (1- 0.275)}{ 500} }[/tex]
=> [tex]SE = 0.020[/tex]
In the sampling distribution, the center of the sampling distribution is 0.275 and the standard error is 0.063.
What is sampling distribution?A sampling distribution simply means the probability distribution that is gotten from a larger number of samples that are drawn from a population.
In this case, the center of the sampling distribution is 0.275 and the standard error is 0.063. The standard error will be:
= [p × (1 - p)]/n
= [0.275 × (1 - 0.275)]/50
= 0.0039875
= ✓0.0039875
= 0.063
Also, when the sample is 500, the center of the sampling distribution is 0.275 and the standard error is 0.020.
Learn more about sampling distribution on:
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29 + 43 using mental math
Answer:
72
Best of luck
Step-by-step explanation:
If xy=6x , yz=12, and xz=48. Find the value of x
Answer:
Use Tiger Algebra it helps with all answers i just didn't feel like typing it
Step-by-step explanation:
7. Jenny wants to buy some shoes. She found the shoes at the store for a 10 points
price of $35. The store is having a 15% off everything sale. How much
does Jenny pay for the shoes not including tax?*
$36.75
$40.25
$29.75
$5.25
had were nurnle. If there were 10 points
Answer:
Step-by-step explanation:
How do I make my question?
. As the treasurer of her daughter’s Girl Scout troop, Laney collected money for some girls and adults to go to a 3-day camp. Each girl paid $75 and each adult paid $30. The total amount of money collected for camp was $765. If the number of girls is three times the number of adults, how many girls and how many adults paid for camp?
Answer: I believe it’s 3 adults and 9 girls.
Step-by-step explanation:
The table lists several points that form a line on a coordinate plane.
x y
4 6
12 8
16 9
28 12
Based on the information in the table, what are the y-intercept and slope of the line described by these points?
The y-intercept and slope of the line described by these points will be y = (1/4)x + 5.
What is the equation of a line passing through two points?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
Let the equation of the line pass through (x₁, y₁) and (x₂, y₂). Then the equation of the line is given as,
[tex]\rm (y - y_2) = \left (\dfrac{y_2 - y_1}{x_2 - x_1} \right ) (x - x_2)[/tex]
Taking only two points from the table will be (4, 6) and (12, 8). Then the equation of the line is given as,
(y - 6) = [(8 - 6) / (12 - 4)](x - 4)
y - 6 = 1/4(x - 4)
y - 6 = (1/4) x - 1
y = (1/4)x + 5
The y-intercept and slope of the line described by these points will be y = (1/4)x + 5.
More about the line passing through two points link is given below.
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rewrite 8 1/2 as an improper fraction
Answer:
17/2
Step-by-step explanation:
8 × 2 = 16 adding 1 = 17
Find the equation of the line shown
Answer:
-4 times, multiply, divide, subtract or add by 1
-4 is on the x line and (x) comes first in the equation. so x + y. Or whatever way your finding the answer.
I NEED HELP PLEASE!!!!!!!!!!
Perry wants to project a movie from his phone to a screen on the wall. The side
length of the screen is 56 in. The scale from the screen to the phone is 7 in. to 1 in.
What is the side length of Perry's phone? Show your work.
The side length of perry's phone will be 8 inches.
What is Equation Modelling?Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.
Given is Perry who wants to project a movie from his phone to a screen on the wall. The side length of the screen is 56 in. The scale from the screen to the phone is 7 in. to 1 in.
Assume the side length of perry's phone be [x] inches. Then, we can write the proportion as -
56/x = 7/1
x = 56/7
x = 8
Therefore, the side length of perry's phone will be 8 inches.
To solve more questions on equation modelling, visit the link below-
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what place value is the 9 out of 874.15239
Answer:
100 thousandths
Step-by-step explanation:
Hope this helps:)
Albuterol is used to calm bronchospasm. It has a biological half-life of 7 hours and is normally inhaled as a 1.25 mg dose. (Note: Use the concepts of half-life or doubling time. The biological half-life of a substance is the amount of time it takes for the physiologic or radiologic activity of that substance to reduce by half.)
Required:
a. Find a model for the amount of albuterol left in the body t hours after an initial dose of 1.25 mg.
b. How much albuterol is left in the body after 24 hours?
Answer:
a. N(t) = 1.25 (1/2)^t/7
b. 0.1160933038mg.
Step-by-step explanation:
The formula for half life =
N(t) = No(1/2)^t/t½
Where N(t) = Amount of Substance left
No = Initial amount not Substance
t = time after t years
t½ = Half life of the substance
From the question:
No = 1.25mg
t½ = 7 years
a. Find a model for the amount of albuterol left in the body t hours after an initial dose of 1.25 mg.
N(t) = No(1/2)^t/t½
No = 1.25mg
t½ = 7 years
N(t) = 1.25 (1/2)^t/7
b. How much albuterol is left in the body after 24 hours?
Using the model in the above question
N(t) = 1.25 (1/2)^t/7
N(t) = 1.25(1/2)^24/7
N(t) = 1.25(0.5)^3.4285714286
N(t) = 0.1160933038mg
Therefore, the quantity of albuterol left in the body after 24 hours is 0.1160933038mg.
Answer:
x = 2 and x = 4
Step-by-step explanation:
The solution of the given equation is shown on the graph
There are two intercepts with coordinates of
(2, 2) and (4, -22)The x-coordinates are
x= 2 and x= 4Correct option is 3 or C.
Answer:
C
Step-by-step explanation:
On the graph, you can see that we are given two points; (2, 2) and (4, -22)
Since we are looking for the value of "x", we need the x value of the given points.
The x values in both points are 2 and 4. Thus are the solutions.
Best of Luck!
Solve -5(-5m + 5) = -2m – 4
Answer:
m=7/9
Step-by-step explanation:
-5(-5m+5)=-2m-4
25m-25=-2m-4
25m+2m=-4+25
27m=21
÷ 27 ÷ 27 (divide both sides)
m=7/9 or .777 (infinite)
A bird park has black and white birds in the ratio of 8 to 2 as shown below:
8 black birds and 2 white birds are shown
Which is another ratio that can describe the black to white birds?
4 to 1
1 to 4
1 to 7
7 to 1
Answ3r:
A.) 4 to 1
Step-by-step explanation:
yup!
Answer:
4 to 1
Step-by-step explanation:
answer this for a brainly thingy
Answer: c
Step-by-step explanation:
Answer:
what is the question being asked?
Step-by-step explanation:
when solving a uniform motion problem, how does drawing a diagram of the situation help you
Answer:
Uniform motion always travel in equal distances in equal intervals of time. So the graph will always be constant.
Once you draw the diagram of a uniform motion, when it comes to plotting points you can easily identify if the points go in a constant rate(uniform) or in uneven distances(non-uniform).
Why is it important to know how to change dissimilar fractions to similar fractions especially in adding and subtracting fractions ?
Answer:
Fast, since we can't explicitly add or subtract them. This will lead us to an incorrect response.
Step-by-step explanation:
In this question we assume a value and solve its value which can be defined as follows:
Let the value:
[tex]\to \frac{3}{2}+\frac{4}{5}\\\\[/tex]
solve the above value by taking LCM that is equal to 10
[tex]\to \frac{15+ 8}{10}\\\\\to \frac{23}{10}[/tex]
PQ=2x+1 and QR=5x-44; Find PR
Answer:
x=15
Step-by-step explanation:
subtract 1 from both sides so you are left with 2x=5x-45
then subtract 5x from both sides and you have -3x=-45
then finally divide -3 from -45 to get x=15
Say hi for a big reward. :)
Answer:
Hi
Step-by-step explanation:
Hi
Write the sentence as an inequality. A number n plus 7 is less than or equal to 9.
Answer:
[tex] n + 7 \le 9 [/tex]
Step-by-step explanation:
[tex] n + 7 \le 9 [/tex]
What’s the slope of 4,4 and 5,-4
Answer: -8
Step-by-step explanation: You do y2 which is -4 subtracted by y1 which is 4 over x2 which is 5 subtracted by x1 which is 4 and since the denominator is 1 it becomes just negative 8
x + 2(x - 4) simplify using distributed property
Answer: 3x-8
Step-by-step explanation:
distribute- 2 times x=2x, and 2 times -4=-8
x+2x-8
combine like terms- x+2x=3x
3x-8
Answer:
[tex]\huge\boxed{\sf{3x-8}}[/tex]
Step-by-step explanation:
Hello.
In order to simplify this expression, we need to
Use the Distributive property (a(b+c)=ab+ac) and distribute 2Combine like terms (add the x's)[tex]\mathbb{THE\:FIRST\:STEP:}[/tex]
Distribute 2:
2(x-4)
2x-8
Step 1 is completed! :) [tex]\checkmark[/tex]
[tex]\mathbb{THE\:SECOND \ STEP:}[/tex]
Combine Like Terms:
x+2x-8
3x-8
Problem Solved! :) [tex]\huge\checkmark[/tex]
I hope it helps & have an outstanding day.
[tex]\boxed{imperturbability}[/tex]
solve by factoring
k2 +6k =16
Answer:
k=2 k=-8
Step-by-step explanation:
9. Higher Order Thinking Andy's team
scored a total of 10 goals in two games.
They scored 1 or 2 goals in the first
game. How many goals could they have
scored in the second game? Explain
how you know.
They scored either 8 or 9 goals in second game.
What is Addition?Combining things and counting them as one big group is done through addition. In math, addition is the process of adding two or more integers together. Addends are the numbers that are added, while the total refers to the outcome of the operation.
As, Total goals = 10 in two games
Let x be the number of goals that a soccer team scored in the first half
and, y be the number of goals that a soccer team scored in the second half
So, x+ y = 10
x= 2 and y = 8
Thus, 2+ 8 = 10
Hence, They scored either 8 or 9 goals in second game.
Learn more about addition here:
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