39x3=30x3+9x3
117=90+27
117=117
39x3=30+9x3
117=30+27
117=57
39x3=300x3+9x3
117=900+27
117=927
39x3=30x3+9
117=90+9
117=99
So the first one is correct.
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hope it helps
..............................................help
Answer:
Its C
Step-by-step explanation:
Pretty ez since 8 divided by 12 is 2/3 or you just simply simplify it.
Answer:
C. 2/3
I promise this is right.
in the diagram, which pair of angles are corresponding angles?
A. 1 and 8
b. 4 and 6
c. 3 and 7
d. 2 and 4
solve the equation a/a^2-9 +3/a-3=1/a+3
What is the vertex?
f(x) = -x2 - 4x + 12
Answer:
-2, 16
Step-by-step explanation:
Section: 4: Interpret:
Which of the following statements are TRUE for the child dependency ratio for the Midwest region?
Select all that apply
OA. There are approximately 30 children for every 100 workers in the Midwest region.
OB. There are 298 children for every 1000 workers in the Midwest region.
C. 29.8% of the workers are children in the Midwest region.
D. 29.8% of the people are children in the Midwest region.
E. There are 298 children for every 1000 people in the Midwest region.
OF. None of the above statements is true.
Which of the following statements are TRUE for the old-age dependency ratio for the Midwest region?
Select all that apply
A. There are approximately 20 elderly for every 100 people in the Midwest region.
B. 19.7% of the workers in the Midwest region are elderly.
C. There are 197 elderly for every 1000 people in the Midwest region.
D. There are 197 elderly for every 1000 workers in the Midwest region.
OE. 19.7% of the people in the Midwest region are elderly,
OF. None of the above statements is true.
Which of the following statements are TRUE for the age dependency ratio for the Midwest region?
Select all that apply
OA. There are approximately 50 dependents for every 100 workers in the Midwest region.
OB. For every 1000 people in the Midwest region there are 495 dependents.
C. 49.5% of the workers in the Midwest region are dependent.
OD. 49.5% of the people in the Midwest region are dependent.
E. Approximately 50 workers in the Midwest region are dependent.
F. For every 1000 working people in the Midwest region there are 495 dependents.
O G. None of the above statements is true,
Section: 5: Extend:
Pls help 30 points 7th grade math
estimate to find the quotient if 823 divided by 23
Answer:
Step-by-step explanation:
35.7826087
I'm guessing you want it estimated to the nearest tenth so 35.8
In 2015, there were 310 rats that were counted living in a park outside of New Haven, CT. The town laid out traps to exterminate the rats and the population decreased by 70%. How many rats can be anticipated in the park now?
93 rats can be anticipated in the park now.
In 2015, there were 310 rats that were counted living in a park.
the rats and the population decreased by 70%
percentage is the ratio of composition of matter to the overall composition of matter multiplied by 100.
Since rat decreased by 70 %,
= 310 x 70 / 100
= 217
Now the decrease in rats = 310 - 217
anticipated rats in the park = 93
Thus the 93 rats can be anticipated in the park now.
Learn more about percentage here:
brainly.com/question/13450942
#SPJ2
que alguien me ayude cuanto hace q yo sali de escuela
Answer:
a=20 m²
b=21 cm²
c=36 dm²
Step-by-step explanation:
A) 12²+16²=a²
144+256=a²
400=a²
√400=a
a=20
B) 28²+b²=35²
784+b²=1225
b²=1225-784
b²=441
b=√441
b=21
C) c²+15²=39²
c²+225=1521
c²=1296
c=√1296
c=36
can sb help me wit dis ?
Answer:
x=55 degrees
DOE = 117 Degrees
Step-by-step explanation:
You know EOF is equal to COD so you can say
x+8=63
x+8-8=63-8 (subtract 8 from both sides)
x=55 degrees
Next
63 and DOE add up to 180
DOE = 180-63
DOE = 117 Degrees
Solve n2 + 11n + 30 = 0
help
Answer:
n = -5 or -6
Step-by-step explanation:
[tex]n^2+ 11n + 30 = 0[/tex]
Lets factorise the quadratic equation :-
→ Lets split the middle term of the equation.
[tex]=> n^2 + 5n + 6n + 30 = 0[/tex]
→ Lets take 'n' common from the first 2 terms & '6' common from last 2 terms.
[tex]=> n(n + 5) + 6(n + 5) = 0[/tex]
→ Lets take (n + 5) whole in common from the equation.
[tex]=> (n + 5)(n + 6) = 0[/tex]
Here , we get 2 values of n :-
1) [tex]n + 5 = 0[/tex]
[tex]=> n = -5[/tex]
2) [tex]n + 6 = 0[/tex]
[tex]=> n = -6[/tex]
∴ Hence , n = -5 or -6
Find the circumference of the circle below
7 A drawer contains 28 socks. Some are white, some are blue, some are red, and some
are black. The probability of selecting a blue sock is 2/7. How many blue socks are in the
drawer?
Answer:
there are 8 blue socks
Step-by-step explanation:
28 / 4 = 7
multiply 2/7 by 4 and you get 8/28
What is the value of 4)1/8 divided by 5)1/2
Answer:
I'm assuming that you meant to type: The question is x/5=1/2+1/8 ; X= ?
If so, we're solving for x.
x/5 = 1/2 + 1/8
2 is a factor of 8, so let's start with common denominators.
x/5 = 1/2 *(4/4) + 1/8
x/5 = 4/8 + 1/8
x/5 = 5/8 As long as we just need to know the value of x, let's use inverse operations.
x/5 *5 = 5/8 *5
x = 25/8 or 3.125
What is the approximate volume of the cylindrical cup? Use 3.14 for n.
Answer:
The answer is....
The volume of a cylinder is 2462 feet³.
Please give Brainly
Step-by-step explanation:
Answer:
37.68 cubic inches
Step-by-step explanation:
V=pi*r^2*h
V=3.14*2^2*3
According to a recent government report, the aging of the U.S. population is translating into many more visits to doctors' offices and hospitals (USA Today, August 7, 2008). It is estimated that an average person makes four visits a year to doctors' offices and hospitals. What is the probability that an average person makes at least one MONTHLY visit to doctors' office and hospitals
Answer:
0.2835 = 28.35% probability that an average person makes at least one MONTHLY visit to doctors' office and hospitals
Step-by-step explanation:
Mean during a time period means that we use the Poisson distribution.
Poisson distribution:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of sucesses
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
It is estimated that an average person makes four visits a year to doctors' offices and hospitals.
A year has 12 months, which means that the monthly mean is [tex]\mu = \frac{4}{12} = \frac{1}{3}[/tex]
What is the probability that an average person makes at least one MONTHLY visit to doctors' office and hospitals?
This is:
[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]
In which
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = 0) = \frac{e^{-(\frac{1}{3})}*(\frac{1}{3})^{0}}{(0)!} = 0.7165[/tex]
[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.7165 = 0.2835[/tex]
0.2835 = 28.35% probability that an average person makes at least one MONTHLY visit to doctors' office and hospitals
PLS HELP!! :))
How many faces, edges, and vertices does this figure have?
Answer: 5 faces,8 edges,5 vertices
Step-by-step explanation:5 faces - of which 1 is a square face at the base and 4 isosceles triangle, above.
5 vertices - of which 4 are at the base where 3 edges meet and one above where 4 edges meet.
8 edges - of which 4 are equal in length and at the base and the other 4 are equal in length and above.
The sum of 43 and z is equal to 72.98. Enter the equation that represents the description.
sum is an answer to an addition problem, so we have to add 43 and z. z+43=72.98
Subtract 43 on both sides.
z=29.98
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hope it helps
Answer:
43 + z = 72.98
Step-by-step explanation:
Sum meaning add the two (or more numbers together) we get 43+ z = 72.98
If you're trying to find "z" simply subtract 43 from 72.98 to get 29.98 as z
HELP PLS THIS IS DUE SOON
Answer:
4.8/5%=b
Step-by-step explanation:
4.8/5%=96
$96 was the total cost
surface area of rectangular prism
Answer:
1. 10
2.96
3.252
4.16
5.105
6.90
Step-by-step explanation:
help please thank you
3. What are the domain and range of (x) = 4* ?
Domain:
Range:
unit 8 homework 4 anwser 10
Answer:what is this
Step-by-step explanation:
What is a pound equal to in fraction form?
Answer:
One pound can be written as 1.0 pounds, and moving the decimal place one place to the left gives you 0.10 pound, which is equal to one tenth of a pound. Convert 16 oz. to one sixteenth of an ounce by moving the decimal one place to the left.
The Great Pyramid of Giza has an approximate height of 252 yards, and the square base has side lengths of approximately 152 yards. What is the approximate volume of the pyramid?
A. 12, 768 cubic yards
B. 38,304 cubic yards
C. 1,940,736 cubic yards
D. 5,822,208 cubic yards
Answer:
b/38,304
Step-by-step explanation:
when you multiple 252 times 157 you will get 38,304.
After a number of complaints about its tech assistance, a computer manufacturer examined samples of calls to determine the frequency of wrong advice given to callers. Each sample consisted of 100 calls. SAMPLE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Number of errors 5 3 5 7 4 6 8 4 5 9 3 4 5 6 6 7 Click here for the Excel Data File a. Determine 95 percent limits. (Do not round your intermediate calculations. Round your final answers to 2 decimal places. Round up any negative control limit value to zero.) b. Is the tech assistance process stable (i.e., in control)
Answer:
a) Upper Control Limit = 0.10
Lower Control Limit = 0.01
b) The tech assistance process is stable and in control.
Step-by-step explanation:
Given - After a number of complaints about its tech assistance, a
computer manufacturer examined samples of calls to determine
the frequency of wrong advice given to callers. Each sample
consisted of 100 calls.
SAMPLE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Number of errors 5 3 5 7 4 6 8 4 5 9 3 4 5 6 6 7
To find - a. Determine 95 percent limits.
b. Is the tech assistance process stable (i.e., in control)
Proof -
z = 95% confidence interval
= 1.96
⇒z = 1.96
Proportion of defects,P = total defectives/total observations
= 0.0544
⇒P = 0.0544
Now,
Q = 1-P
= 0.9456
⇒Q = 0.9456
Now,
Average sample size, N = 100
Standard deviation = [tex]\sqrt{\frac{P.Q}{N} }[/tex]
= 0.0227
Now,
Upper Control Limit = P + z(Standard deviation)
= 0.0988
⇒Upper Control Limit = 0.0988 ≈ 0.10
And
Lower Control Limit = P - z(Standard deviation )
= 0.0099
⇒Lower Control Limit = 0.0099 ≈ 0.01
∴ we get
Upper Control Limit = 0.10
Lower Control Limit = 0.01
b.)
Now,
it is clear that the fraction defective values are wit in upper an lower control limits.
So, The tech assistance process is stable and in control.
Explain how to use models to divide 2.1 by 0.7
Answer:
3
Step-by-step explanation:
The area of a rectangle is x² + 3x – 28 and the width is x + 7. What is the length of the
rectangle?
Answer:
X+4
Step-by-step explanation:
length times width = area
(X+7)(X-4) = x^2 +3x-28
HELP URGENT PLZ PLZ PLZ
Answer: D. [tex]y=\frac{1}{9} x^{2}[/tex]
Step-by-step explanation: The smaller the coefficient of a fraction by the quadratic function (the x squared value), the more narrow the graph becomes. 1/4 is larger than 1/9 and the other two whole numbers are still larger than 1/9. Even though -1 is less than 1/9, this only makes the graph flip, not make it any more narrow. Fractions are what squeeze graphs, negatives do not make a difference (i.e. -1/4 is the same size of narrowness as 1/4).
Name a plane parallel to plane CIJ
A. Plane AFL
B. Plane AFD
C. Plane IJL
D. Plane BCI
Answer:
i think its c
Step-by-step explanation: