Answer:
7
Step-by-step explanation:
let the unknown number be x
so x times 2 minus 3=11
it will now be 2x-3=11
the -3will cross the equal sign and change to +3
2x=11+3 which will be 2x=14
divide both sides by 2 and the final answer will be x=7
Multiply (2x - 3) and (3x + 6)
Answer:
Step-by-step explanation:
(2x−3)(3x+6)
=(2x+−3)(3x+6)
=(2x)(3x)+(2x)(6)+(−3)(3x)+(−3)(6)
=6x2+12x−9x−18
=6x2+3x−18
a rectangular piece of paper 71 cm long and 10m wide . a cylinder is formed by rolling the paper along its length , find volume ??
Answer:
Volume=355 cm³
Step-by-step explanation:
I assume it should be 10 cm, not 10 m. If it is 10 m, everything will have to be adjusted.
Circumference = 2[tex]\pi[/tex]r
10=2[tex]\pi[/tex]r
10÷2[tex]\pi[/tex]=r
1.59=r
V=[tex]\pi[/tex]r²h
V=[tex]\pi[/tex](1.59)(71)
v=355
How many dots are in pattern 1
What is the domain of the function represented by the graph?
Answer:
im not real sure but i wish i could help
Step-by-step explanation:
1/2 - 1/12=????????
Answer:
5/12
Step-by-step explanation:
Subtract.
[tex]\frac{1}{2}[/tex] - [tex]\frac{1}{12}[/tex] = [tex]\frac{5}{12}[/tex]
You can not simplify, so that is your answer.
Here to help!
Answer:
5/12
Step-by-step explanation:
6-1/12
5/12
HELP ME ON THIS QUESTION PLEASE HELP ME I WOULD REALLY APPRECIATE IT THANK YOU
Answer:
I think c=a-7
Step-by-step explanation:
You would the equation a=b+9 to b=a-9. Then you would add 2 to -9 to get -7. So c=a-7.
The equation of a line in point-slope form is
y – 5 = 3(x + 1).
A point that lies on this line is
Answer:
(-1,5)
Step-by-step explanation:
Just took it. Edg 2020. Hope this helps :)
Answer:
its A (-1,5)
Step-by-step explanation:
whats the mean for this data? round to 2 decimals places
Answer:
1992.38
Step-by-step explanation:
The mean, or average, of a set of data points is found by adding all the values together and dividing by the number of values.
Sum:
1911.56 + 1956.69 + 1903.16 + 1958.82 + 1910.87 + 1983.14 + 2014.12 + 2023.86 + 2057.26 + 2034.21 + 2087.73 + 2067.14 = 23908.56
Divide:
There are 12 numbers, so divide 23908.56 by 12:
23908.56 / 12 = 1992.38
The average is thus 1992.38.
~ an aesthetics lover
Answer:
1992.38
Step-by-step explanation:
To find the mean, simply add all the numbers together, and divide by the amount of numbers there is:
(1911.56 + 1956.69 + 1903.16 + 1958.82 + 1910.87 + 1983.14 + 2014.12 + 2023.86 + 2057.26 + 2034.21 + 2087.73 + 2067.14)/12 = (23908.56)/12 = 1992.38
1992.38 is your answer.
~
What is the center of the circle that has a diameter whose endpoints are (9, 7) and (-3, -5)?
Answer:
(3, 1)
Step-by-step explanation:
Midpoint of the diameter is the center
Since endpoints are (9, 7) and (-3, -5)
Midpoint will be:
((9 - 3)/2, (7-5)/2) = (3, 1)So the center is (3, 1)
Answer:
(3, 1)
Step-by-step explanation:
Midpoint of the diameter is the center
Since endpoints are (9, 7) and (-3, -5)
Midpoint will be:
((9 - 3)/2, (7-5)/2) = (3, 1)
or 3/1, 2/2 = (3,1)
So the center is (3, 1)
A study was conducted on the relationship between speeds of cars and gas mileage. The correlation coefficient was 0.45. Later, the researchers found the speedometers read 5 mph too high. Researchers recomputed the coefficient. The new value will be:
Answer:
0.45
Step-by-step explanation:
The correlation coefficient is used to measure the relationship between how two variables change. In this question, the two variables are cars speed and gas mileage. Since the speedometers were wrong as they were 5 mph too high in a constant manner, then the correlation between how changes in speed affect gas mileage will not be changed.
For example, if we are measuring how an increase of 15 mph decreased gas mileage, we are looking at the change in speed and it is the same if we start with 75 mph and then increase speed to 90 mph, or if we start with 45 mph and then increase to 60 mph. The change in speed for both cases will remain unchanged at 10 mph.
Now, since we have seen that the change in speed remains unchanged and since correlation coefficient is a measure of the relationship between how two variables change, then the new value of the correlation coefficient will remain the same as 0.45.
3. Lonnie has a gift card worth $600 for a local entertainment store. Movies cost $20 each and newly released video games cost $50 each. In order to use the gift card, Lonnte must purchase
at least thirteen items. Which is a combination of movies and newly released video games that Lonnie could purchase using his gift card? (2 points)
6 movies and 4 video games
14 movie and 7 video games
O O O O
2 movies and 10 video games
8 movies and 6 video games
Answer:
8 movies and 6 video games
Step-by-step explanation:
Given
[tex]Gift\ Card = \$600[/tex]
[tex]Movies =\ $20[/tex]
[tex]Video\ Game = \$50[/tex]
[tex]Minimum\ Items = 13[/tex]
Required
Determine the items Lonnie can afford
To solve this question, we make use of trial by error method by taking the options one at a time:
Option 1: 6 movies and 4 video games
This option can not be considered because the number of items is not up to the minimum Lonnte must purchase.
Option 2: 14 movies and 7 video games
[tex]Cost = 14 * \$20 + 7 * \$50[/tex]
[tex]Cost = \$280 + \$350[/tex]
[tex]Cost = \$630[/tex]
This option can not be considered because the cost of purchase is greater than Lonnte's worth of Gift card.
Option 3: 2 movies and 10 video games
This option can not be considered because the number of items is not up to the minimum Lonnte must purchase.
Option 4: 8 movies and 6 video games
[tex]Cost = 8 * \$20 + 6 * \$50[/tex]
[tex]Cost = \$160 + \$300[/tex]
[tex]Cost = \$460[/tex]
Hence, the correct option is 8 movies and 6 video games
9.
Each candy bar from a bin at a candy store costs the same amount. The table shows how many
candy bars four customers purchase from the bin and the total cost of the candy bars.
Customer Number of Candy Bars Total Cost of Candy Bars
1
8
516
2
22
?
3
13
526
?
$32
Which statement is true?
4
A The 22 candy bars purchased by Customer 2 cost $21, and Customer 4 purchased 19 candy
bars for $32
B The 22 candy bars purchased by Customer 2 cost $21. and Customer + purchased 16 Candy
bars for $32
C The 22 candy bars purchased by Customer 2 cost $44. and Customer 4 purchased 19 candy
bars for $32
D The 22 candy bars purchased by Customer 2 cost $44, and Customer 4 purchased 16 candy
bars for $32
The subjects of a study by Dugoff et al. (A-5) were 10 obstetrics and gynecology interns at the University of Colorado Health Sciences Center. The researchers wanted to assess competence in performing clinical breast examinations. One of the baseline measurements was the number of such examinations performed.
The following data give the number of breast examinations performed for this sample of 10 interns.
Intern Number No. of Breast Exams Performed
1 30
2 40
3 8
4 20
5 26
6 35
7 35
8 20
9 25
10 20
Source: Lorraine Dugoff, Mauritha R. Everett, Louis Vontver, and Gwyn E. Barley, "Evaluation of Pelvic and Breast Examination Skills of Interns in Obstetrics and Gynecology and Internal Medicine," American Journal of Obstetrics and Gynecology, 189 (2003), 655-658. 6.4 CONFIDENCE INTERVAL FOR THE DIFFERENCE BETWEEN TWO POPULATION MEANS 177 Construct a 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn.
Answer:
The 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn is (19.1269, 32.6730).
Step-by-step explanation:
Intern No. of Breast
Number Exams Performed X²
1 30 900
2 40 1600
3 8 64
4 20 400
5 26 676
6 35 1225
7 35 1225
8 20 400
9 25 625
10 20 400
∑ 259 ∑ 7515
Mean= X`= ∑x/n= 259/10= 25.9
Variance = s²= 1/n-1[∑X²- (∑x)²/n]
= 1/0[7515- (259)²/10]= 1/9[7515- 6708.1]
= 806.9/9=89.655= 89.66
Standard Deviation= √89.655= 9.4687
Hence
The value of t with significance level alpha= 0.05 and 9 degrees of freedom is t(0.025,9)= 2.262
The 95 % Confidence interval is given by
x`±t(∝,n-1) s/√n
So Putting the values
25.9± 2.262( 9.4687/√10)
= 25.9 ±2.262 (2.9943)
= 25.9 ± 6.7730
= 25.9 +6.7730=32.6730
25.9 -6.7730= 19.1269
= 19.1269, 32.6730
The 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn is (19.1269, 32.6730).
If f(x) = 3^x
+ 10 x and g(x) = 5x - 3, find ( f - g )(x).
Subtract the functions to get that answer
(f - g)(x) = f(x) - g(x)
(f - g)(x) = [ f(x) ] - [ g(x) ]
(f - g)(x) = [ 3^x + 10x ] - [ 5x - 3 ]
(f - g)(x) = 3^x + 10x - 5x + 3
(f - g)(x) = 3^x + 5x + 3
Answer:
3^x+5x+3
Step-by-step explanation:
Find the domain of the function. (Enter your answers using interval notation.) f(s, t) = square root of s^2+t^2.
Answer:
[tex]S=\{\forall \,s,t\in \mathbb{R}|s\in(-\infty,+\infty), t\in(-\infty,+\infty)\}[/tex]
Step-by-step explanation:
Let be [tex]f(s,t) = \sqrt{s^{2}+t^{2}}[/tex], the range of a square root compehends the subset of positive real numbers plus zero. Likewise, the range of the square of any number has the same subset with all real set as domain. As square root encloses a sum of squares, the domain of the function is:
[tex]S=\{\forall \,s,t\in \mathbb{R}|s\in(-\infty,+\infty), t\in(-\infty,+\infty)\}[/tex]
Michael is using a number line to evaluate the expression –8 – 3.
A number line going from negative 12 to positive 12. A point is at negative 8.
After locating –8 on the number line, which step could Michael complete to evaluate the expression?
Michael could rewrite the expression as Negative 8 + 3 and move 3 spaces to the right.
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the right.
Michael could rewrite the expression as Negative 8 + 3 and move 3 spaces to the left.
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the left.
Answer:
Micheal could rewrite the equation as negative 8 + negative 3 and move 3 spaces to the left.
Step-by-step explanation:
-8 - 3 = -8 + (-3)
The step which complete evaluate Michael expression is "Michael could rewrite the expression as negative 8 + negative 3 and move 3 spaces to the left".
What is subtraction on number line?Subtraction on a number line helps to subtract smaller numbers very easily. While subtracting numbers on a number line, we need to jump (move) towards the left-hand side of a number line. We always start with the minuend and move towards the left according to the number given as the subtrahend. 'Minuend' is the number from which we subtract and 'subtrahend' is the number which is subtracted.
According to the given question.
We have an expression -8 -3
For evaluating the given expression on number line Michael have to follow some following steps:
Step1: Michael have to locate -8 on the number line.
Step2: Michael have to move towards the left hand side of the number line according to the number given in the subtrahend. In the given expression the subtrahend is 3, so we will move 3 units left. And at -11 he have to stop.
So, -11 will be the answer of the even expression.
Hence, the step which complete evaluate Michael expression is "Michael could rewrite the expression as negative 8 + negative 3 and move 3 spaces to the left".
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If the patient is less than 70 years old, the loading dose is 80 Howell Units2 per kilogram of DM. One Howell Unit is equivalent to 0.0020 mg of pure heparin. 2. Calculate how many mg of pure heparin is in 80 Howell Units. Do not worry about the kilograms of DM yet. 00.1600mg The loading dose, in mg of heparin for a 5-year-old with a total body weight of 40 lbs., with 10% bodyfat (that is, 90% of that 40 lbs. is lean body mass). You may also be interested to know that 1 kg = 2.20 lbs. Think about the steps you need to go through to find the correct dose. Remember, first you need to find the dosing mass....
Answer:
1) 0.16 mg of pure heparin is in 80 Howell units
2) the loading dose, in mg of heparin for the 5-year-old boy is 2.618 mg
Step-by-step explanation:
Given that;
if a patient is less than 70 years of age then loading dose is 80 Howell units square per Kg of DM,
One Howell unit is equivalent to 0.0020 mg of pure heparin
1)
how many mg of pure heparin is in 80 Howell units.
that will be;
80 × 0.0020 = 0.16 mg
therefore 0.16 mg of pure heparin is in 80 Howell units
2)
First we find the dosing mass
so dosing mass = body weight of the 5year old boy × 90%
from the question his total body weight of 40 lbs and 1 kg = 2.20 lbs
so
dosing mass = 40lbs × 1kg/2.20lbs × 90/100
dosing mass(kg) = 16.37 kg
Now to calculate the Loading dose we say;
Loading dose = dosing mass × heparin required per kg
Loading dose = 16.36 kg × 0.16 mg heparin per 1kg
loading dose = 2.618 mg heparin
therefore the loading dose, in mg of heparin for the 5-year-old boy is 2.618 mg
1 1/3 divided by 3/5
Answer: [tex]2\frac{2}{9}[/tex]
Convert all Mixed Numbers into an Improper Fraction
Multiply 1×3 and get 3. Now add 3+1 and get 4.
1 1/3 = 4/3
Do Keep Change Flip (KCF)
Keep: 4/3
Change: ÷ into ×
Flip: 3/5 into 5/3
Multiply
[tex]\frac{4}{3}*\frac{5}{3}=\frac{20}{9}[/tex]
Divide
[tex]\frac{20}{9}=2\frac{2}{9}[/tex]
Q: How does 20/9 equal 2 2/9?
A: Divide 9 and 20 and get 2 r2 (r = remainder). The 2 becomes the mixed number. The remainder becomes the numerator. 9 becomes the denominator.
To qualify for the long jump competition in track, an athlete must jump a combined distance of more than 16 meters in 3 jumps. Juan jumped 4.76 meters, 5.428 meters, and 5.9 meters. Did Juan qualify for (meet) the competition
Answer:
Yes.(16.088m combined jump)
Step-by-step explanation:
Combining jumps=4.76+5.428+5.9=16.088
16.088>16
Therefore Juan qualified for the competition
1. What is the value of 9 squared?
A. 9
B. 18
C. 81
D.36
2. Simplify. Use paper and pencil or a model. 10^3
A. 10
B. 100
C. 1000
D. 10000
3. Use a factor tree to find the prime factorization of 96. Write the prime factorization using exponents.
A. 2^3 • 6^2
B. 2^5 • 4^2
C. 2^5 • 3
D. 3 • 5^2
Answer:
1 is c
2 is d
3 is a
Step-by-step explanation:
because 9×9 is 81
2 is 10 with 3 0 so 10000
d is a because that is the factor tree
The square of the number 9 is 81.
We need to find the value of 9 squared.
What is the square of a number?When an integer is multiplied by itself, the resultant number is known as its square number. Basically, a square number is a number that is obtained by the product of two same numbers.
Now, the square of 9 is 9²=9×9=81
Therefore, the square of the number 9 is 81.
Simplify 10³:
That is, 10³=10×10×10=1000
So, the simplified form of 10³ is 1000.
We need to prime factorise 96:
That is, 96=2×2×2×2×2×3
=[tex]2^{5} . 3[/tex]
Therefore, the square of the number 9 is 81.
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which expresions are equivalent to 3 1/4 - _ 5/8 select all that apply
Determine how many terms should be used to estimate the sum of the entire series with an error of less than 0.001.
Answer: 9
Step-by-step explanation:
Tₙ ₊ ₁ < 0.001
1 / ( (n+1) 3 +1 ) < 0.001
(n+1)3 + 1 > 1000
(n+1)3 > 999
n+1 > 9.9966
n = 8.9966 => n = 9
I should take n = 9 to be sure that the error is less than 0.001.
A population of beetles are growing according to a linear growth model. The initial population (week 0) is p0=6 and the population after 7 weeks is p7=83 find an explicit formula for the beetle population after n weeks.
Answer:
P(n)= p0 + 11(n)
Where p0= population of week 0
P(n) = population of n weeks
n= number of weeks
Step-by-step explanation:
Population of beetles in Week 0= 6
Population of beetles in Week 7= 83
From week 0 to week 7 there are 8 weeks.
But subtracting population of week 0 from population of week 7 gives
= 83-6
= 77
After the subtraction, we have 7 weeks remaining.
Dividing the remaining population by the number of weeks remaining
=77/7
= 11
For n number of weeks, population p of beetles
P(n)= p0 + 11(n)
Where p0= population of week 0
P(n) = population of n weeks
n= number of weeks
1000 coins are tossed find the probability of getting exactly 500 heads.
Answer:
probability of getting exactly 500 heads= 1
Step-by-step explanation:
If a coin is tossed, the probability of obtaining a head = 0.5
If a coin is tossed, the probability of obtaining a tail= 1- probability of obtaining a head
If a coin is tossed, the probability of obtaining a tail=1-0.5
If a coin is tossed, the probability of obtaining a tail=0.5
So if 1000 coin are tossed, the probability of getting exay 500 heads which is already the half of 1000 is 1
what is 11.510510510 as a fraction
Answer:
1151051051/100000000
Step-by-step explanation:
11.510510510 as a fraction equals 1151051051/100000000
What number comes next 57, 49, 41, 33, 25_
Answer:
18 I guess
Step-by-step explanation:
because we are subtracting all the number by 8
To find the common difference since all the values go done, we can subtract each value.
57 - 49 = 8
49 - 41 = 8
41 - 33 = 8
33 - 25 = 8
The common difference is 8 so to find the next number, all we need to do is subtract the last number by 8.
25 - 8 = 17
Therefore, the answer is 17
Best of Luck!
Find the difference of 3/4 and 1/28. 5/7,21/28,11/14,23/28
Answer:
5/7, pretty sure a 4th of 21
Step-by-step explanation:
Answer:
5/7
Step-by-step explanation:
How many seconds are in 9 days? Show conversion factors and solve.
{(2,4) (3,9) (4,9)} is this a function?
Yes, considering the points, each input gives one output. Points would not be a function if the same input gave different outputs.
In the context of a graph, the points would be on the same vertical line.
Hope this helps.
頑張って!
Answer:
Yes
Step-by-step explanation:
A function is where there are no two of the same domain.
The Domain is the first coordinate which is x
Write an equation through: (-1, 2)and (0, -1)
Answer:
Step-by-step explanation:
(-1 - 2)/(0 + 1) = -3/1 = -3
y + 1 = -3(x - 0)
y + 1 = -3x + 0
y = -3x - 1