Answers
Answer:
³/2 (1.5)
Step-by-step explanation:
∆DEF was enlarged to get ∆ABC. The scale factor would be:
The ratio of any of the side length of ∆ABC to the corresponding side length of ∆DEF.
Thus,
BC:EF = 12:8
= 12/8
= 3/2 = 1.5
Scale factor from ∆DEF to ∆ABC is ³/2 or 1.5
Related Questions
The manager of a magazine wants to estimate the percent of magazine subscribers who approve of a new cover format. To gather data, the manager will select a random sample of subscribers. Which of the following is the most appropriate interval for the manager to use for such an estimate?
a) A two-sample z-interval for a difference between sample proportions
b) A two-sample z-interval for a difference between population proportions
c) A one-sample z-interval for a sample proportion
d) A one-sample z-interval for a population proportion
e) A one-sample z-interval for a difference between population proportions
Answers
Answer: d) A one-sample z-interval for a population proportion
Step-by-step explanation:
For the scenario described above, since only a single sample pool is required from a single population, then ; The one sample Z interval for a population proportion is required ;
The interval may be calculated using the relation :
Z = (p - p0) / √[(p0(1 - p0)) / n]
p = observed proportion ;
p0 = mean or hypothesized value
n = sample size
Answer:
A two-sample z -interval for a difference in population proportions
Explanation:
A two-sample z-interval is appropriate for estimating the difference between two population proportions.
Write down the next term in each of the following sequences
a)
12
17
22
27
b)
83
77
71
65
Answers
a) 32
b) 59
Both are arithmetic sequences
b) each time minus 6
If point C is the circumcenter, find each missing value(picture attached)
Answers
Answer:
d
Step-by-step explanation:
Suppose a purchasing manager wants to determine the average cost of machined metal parts in the US. How many machined metal parts would they have to sample? The manager wants to be 90% confident with a margin of error of 6.74. Suppose that the costs of the metal parts ranges from 93 to 220. When entering the values into JMP, round the planning value for the standard deviation to four values after the decimal. Round final answer as you normally would.
Answers
Answer:
they will have to sample 60 machined metal parts
Step-by-step explanation:
Given that;
Margin of Error E = 6.74
at 90% Confidence Interval, z = 1.645 { from table }
Range R = maximum range - minimum range = 220 - 93 = 127
standard deviation σ = R / 4 = 127/4= 31.7500
How many machined metal parts would they have to sample n = ?
to get our sample size, we use the following formula
n = [ zσ / E ]²
we substitute in our values
n = [ 1.645 × 31.7500 / 6.74 ]²
n = [ 52.2287 / 6.74 ]²
n = [ 7.7490 ]²
n = 60.047 ≈ 60
Therefore, they will have to sample 60 machined metal parts
You can use the margin of error with the z value and standard deviation to get the result.
The number of metal machine parts would be 60.
Given that:The confidence level needed is 90%The margin of error is 6.74The cost of metal parts ranges from 93 to 200To find:The number of machined metal parts that have to be sampled.
Finding the range of the distribution:Range = Max. value - min. value = 220 - 93 = 127
Finding the standard deviation:The standard deviation is approximately the quarter of the range of the distribution.
Thus, [tex]\sigma = 127 \div 4 = 31.75[/tex]
For 90% confidence, the z value is 1.645 (from z tables)
Thus, from the formula for size of sample, we have:
[tex]n = (\dfrac{z\sigma}{E})^2 = (\dfrac{1.645 \times 31.75}{6.74})^2 = (7.749)^2 \approx 60[/tex]
The number of metal machine parts would be 60.
Learn more about sample size here:
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the step function f of x is graphed what is the value of f of 0?
Answers
Answer:
AYYYYYYYYYYYY YO IS SNOOP DOGG
Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
PLEASE HELP
Simplify the expression 5^3+3(5-3)
A.137
B.131
C.27
D.21
Answers
Answer:
the correct answer is 131
Step-by-step explanation:
5^3 +3(2)
= 125 +6
=131
The graph of the function f(x) = (x + 2)(x - 4) is shown.
A. all real values of x where x < -2
B. all real values of x where -2
C. all real values of x where 1
D. all real values of x where x <0
Answers
Answer:
B) All real values of 'x' where -2 < x< 4
Step-by-step explanation:
Explanation:-
Given function f(x) = (x +2 ) ( x-4)
(x+2)(x-4) =0
⇒ x +2 =0 and x-4=0
⇒ x =-2 and x=4
From graph
Given parabola lies between the x=-2 and x =4
∴ All real values of 'x' lies between x=-2 and x =4
All real values of 'x' lies -2 < x< 4
1 2 3 4 5
Submit
brit
An investment club invested $5000 at 2.5% interest and was able to earn $1200. Approximately how many years did this take?
les)
A)
8
B)
10
12
D)
14
Ratios and Proportional Relationships
S7 Sleutstep Retro And Percent Problers
DS
Hint
Formula
Regular dal
Scientifie cald
Answers
Answer:
10
Step-by-step explanation: i took the test
Ashley deposit $100 into a savings account. The account is 2% compounded annually. What is the balance in Ashley's account after 2 years?
Answers
Answer:
104.40
Step-by-step explanation:
100 * 2% = 102
102 * 2% =104.4
Hey guys this is my new account it used to be SimpForLucy SimpForKirishima but now ill just be doing normal stuff for now on since iv'e been a disgrace to you guys
Answers
Working as a waiter, Michael earns $7 an
hour plus tips. Last night he received $35 in tips and earned a total of $84. How
many hours did he work?
Answers
Answer:
7Hrs because 84-35=49
49/7=7
What is 23.93 in to a percent pls help pls pls pls pls pls
Answers
Answer:
it is : 2393%
Step-by-step explanation:
can I get an answer please
Answers
Answer:
the second one I'm pretty sure
Step-by-step explanation:
Answer:
its definitely B
Step-by-step explanation:
Marking brainliest
Stefanie has 18 grams of 20% sugar syrup and john 30 of 25% what is the concentration in the new mixture (round to one decimal place)
Answers
Answer:
[tex]23.1\%[/tex]
Step-by-step explanation:
Stefanie's mixture of 18 grams has a 20% sugar content. Therefore, there are grams of sugar in her syrup.
John's mixture of 30 grams has a 25% sugar content. Therefore, there are grams of sugar in her syrup.
Therefore, if they mix their syrups together, there will be 11.1 grams of sugar and 48 total grams of content.
The concentration of sugar in the new mixture is [tex]\frac{11.1}{48}=\fbox{$23.1\%$}[/tex](rounded to one decimal place).
The concentration in the new mixture is 23.1%.
What is the percentage?The percentage is defined as a ratio expressed as a fraction of 100.
For example, If Misha obtained a score of 67% on her exam, that corresponds to 67 out of 100. It is expressed as 67/100 in fractional form and as 67:100 in ratio form.
Stefanie's 18-gram combination has 20% sugar. As a result, her syrup contains grams of sugar.
John's 30-gram combination contains 25% sugar. As a result, her syrup contains grams of sugar.
As a result, if they combine their syrups, there will be 11.1 grams of sugar and 48 total grams of the substance.
The new combination has a sugar percentage of 11.1/48 = 23.1%. (rounded to one decimal place).
Learn more about the percentages here:
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I need help I'm in 6th grade I use to have all f but I changed it into a,b,c can someone plss help so I don't fail
Answers
Answer:
um what
Step-by-step explanation:
given each pair of similar triangles find the missing value. of LJK=PQR find x
Answers
Answer:
1
Step-by-step explanation:
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!
Answers
Just multiply each side by 2 or divide by 1/2
PLEASE HELP IT IS 6th GRADE MATH!!!!!
Answers
Answer:
19
Step-by-step explanation:
[tex]\frac{17b - a^{2} }{2}[/tex]
Substitute the "a" and "b"
a = 8
b = 6
[tex]\frac{17 * 6 - 8^{2} }{2}[/tex]
[tex]\frac{17 * 6 - 64}{2}[/tex]
[tex]\frac{102 - 64}{2}[/tex]
[tex]\frac{38}{2}[/tex]
[tex]19[/tex]
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Which of the following shows a reflection of the triangle over the horizontal axis?
Answers
Answer:
I think the first one is the answer
The selling price of a refrigerator is $487.20. If the mark up is 5% of the dealers cost what is the dealers cost of the refrigerator
Answers
Answer:
$464Step-by-step explanation:
Let the cos be x, then selling price is:
x + 5% = x*1.05 = 1.05xWe have the selling price $487.20
1.05x = 487.20x = 487.20/1.05x = 464Cost price is $464
Find the length of side x in simplest radical form with a rational denominator.
60
X
5
30
Answers
There are three commonly used trigonometric identities.
Sin x = 1/ cosec x
Cos x = 1/ sec x
Tan x = 1/ cot x or sin x / cos x
Cot x = cos x / sin x
Sin 30 = 5/x
Sin 30 = 1/2
x = 10
The length of the side x is 10.
What are trigonometric identities?
There are three commonly used trigonometric identities.
Sin x = 1/ cosec x
Cos x = 1/ sec x
Tan x = 1/ cot x or sin x / cos x
Cot x = cos x / sin x
We have,
The length of side x can be calculated using the trigonometric identities.
We know that,
Sin x = Perpendicular / Hypotenuse
Sin 30 = 5 / x
1/2 = 5/x
Multiply 2 on both sides.
1= 10/x
x = 10
Thus,
The length of the side x is 10.
Learn more about trigonometric identities here:
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The equation of the line
Answers
Answer: y = 2
Step-by-step explanation: Horizontal means y =
Answer:
○ [tex]\displaystyle y = 2[/tex]
Step-by-step explanation:
This is a STRAIT HORISONTAL LINEAR EQUATION, therefore sinse every x-coordinate will have the same y-coordinate of [tex]\displaystyle 2,[/tex] this is the option you would pick.
I am joyous to assist you at any time.
Has 256 and 81 already been squared?
8th grade math
Please answer ASAP (i'm being timed)
Answers
Melanie got a new employer pay job through the Jones recruitment agency the job pays $52,400 per year and the agency fee is equal to 25% of one years pay how much must Melanie‘s employer pay the agency
Answers
Answer:
the amount that pay to the agency is $1,091.67
Step-by-step explanation:
The computation of the amount that pay to the agency is as follows:
= Amount paid per year ÷ number of months × 25%
= $52,400 ÷ 12 months × 25%
= $1,091.67
Hence, the amount that pay to the agency is $1,091.67
We simply applied the above formula so that the correct amount could come
Answers ASAP simplify the ratio answer both questions
Answers
Answer:
The answers are 40 : 1 and 16 : 5
Step-by-step explanation:
3. ) 400 : 10
Cancel out two of the zeros to get-
40 : 1
6. ) 1600m : 5km
1 km = 100 m, Therefore-
1600 : 500
Cancel out the zeros to get-
16 : 5
Help ASAP please giving brainliest!!
Answers
Answer:
2 hours
Step-by-step explanation:
solve for x: x/-5+6≤2
Answers
Answer:
x ≥ 20
Step-by-step explanation:
hope this helps!
Answer:
x>= 20 or 20≤x
Step-by-step explanation:
Isolate x
Subtract 6 from both sides:
x/-5<=-4
Multiply both sides by -5, and switch the inequality sign bc u multiplied by a negative number:
x>= 20
PLEASE HELP ME
4x+1/3 y^2
x=2
y=3
Answers
Hope you got this
Ted's taxi service has cabs that can seat 4 people and vans that can seat 15 people. The taxi service can transport a maximum of 134 people in its 17 units. How many vans does Ted's Taci Service have in it's fleet?
A. 19
B. 11
C. 9
D. 6
Answers
Answer:
D. 6
Step-by-step explanation:
In the diagram below, AB is parallel to CD. What is the value of x?
B
459
A. 30
B. 45
C. 60
D. 135
Answers
Answer:
Could you show the diagram?