Answer:
The mean age of the frequency distribution for the ages of the residents of a town is 43 years.
Step-by-step explanation:
We are given with the following frequency distribution below;
Age Frequency (f) X
0 - 9 30 4.5 135
10 - 19 32 14.5 464
20 - 29 12 24.5 294
30 - 39 20 34.5 690
40 - 49 25 44.5 1112.5
50 - 59 53 54.5 2888.5
60 - 69 49 64.5 3160.5
70 - 79 13 74.5 968.5
80 - 89 8 84.5 676
Total 242 10389
Now, the mean of the frequency distribution is given by the following formula;
Mean =
= = 42.9 ≈ 43 approx.
Hence, the mean age of the frequency distribution for the ages of the residents of a town is 43 years
What are the solutions of the equation x2-30=x
Answer:
x = 6 or x = -5
Step-by-step explanation:
x^2 - 30 = x
x^2 - x - 30 = 0
(x - 6)(x + 5) = 0
x - 6 = 0 or x + 5 = 0
x = 6 or x = -5
Solve the following rational equation for x+2/3 2x-4/2
Answer:
2.667
Step-by-step explanation:
I have learned how to do this. I hope it is right! (;
Cuanto es [20+(10-15)+2]-[15+(7-10)(-2+5)]
Given Sine (30 degrees) = one-half and Cosine (30 degrees) = StartFraction StartRoot 3 EndRoot Over 2 EndFraction, use trigonometric identities to find the the value of cot(30°).
Answer:
D
Step-by-step explanation:
its right on edge
Answer:
D. \sqrt(3)
Step-by-step explanation:
For every pound a company spends on advertising, it spends £0.51 on its website. Express the amount spent on advertising to its website as a ratio in its simplest form.
Answer:
I think it is 0.51? (I am complety off aren't I/)
Step-by-step explanation:
PLEASE HELP ME!!!!!!!!!!
Answer:
A.)
Step-by-step explanation:
Given: AB = CDProve: AC = BD
Answer:
it would be helpful if there was a diagram but ill write a proof below of how I would solve a problem. however, it may not be what ur looking for as the question is unclear
1) AB=CD - given
2) BC = BC - reflexive
3) AB+BC=CD+BC- addition property of equality
4)AC= BD - substitution
PLEASE HELP!!!!! Match each equation with its slope
(I also have another question like his in my profile)
Answer: 1. E
2. B
3. C
4. F
5. D
6. A
Step-by-step explanation:
Order the values from least to greatest
|-7|
-2
|-6|
-6
10
Answer:
-6, -2, |-6|, |-7| 10
Step-by-step explanation:
1. The ratio of boys to girls in the 9th grade is 3 to 4. There are 176 girls. Set up a proportion to model this information.
Answer:132
Step-by-step explanation:
x-4 is greater than -8 in interval notation
Answer:
x
−
4
=
−
8
=
Step-by-step explanation:
please helpppppppppp
Answer:
the popularity keeps going up i wount give the euashions though i dont know them.
Step-by-step explanation:
In the number 4,444.444, how does the 4 in the hundredths place compare to the 4 in the place to its left?
Answer:
the four to the left of the four in the hundredths place is 1000 place
Step-by-step explanation:
I WILL BRAINLEIST PLEASEMegan earned $4 an hour for babysitting. She earned $16 on Saturday. How many hours did she babysit?
Answer:
4 hours
Step-by-step explanation:
16/4= 4
PLS HELP WILL GIVE BRAINLIEST!! What is the average of these three numbers: 6.72, 8.40, 8.40
Answer: 7.36
Step-by-step explanation:
avg = (6.72 + 8.40 + 8.40)/3 = 23.52/3 = 7.36
A number r is no less than −1.5 and fewer than 9.5.
Three scoops of whey powder contain 45 grams of protein. How many scoops of whey powder contain 135 grams of protein?
Please help ‼️
The answer is 405 because if you multiply 3 and 135 that would lead you to your answer.
Can somebody helpp ???
Answer:
X = 2
Z = 95
Step-by-step explanation:
Answer:
Step-by-step explanation:
13x+59=11x+63
13x-11x=63-59
2x=4
x=2
13*2+59=26+59=85
11*2+63=22+63=85
360-85*2=2z
190=2z
z=95
It will be nice if you give me brainliest.Good luck!
Solve for X.
6(x-1) =9(x +2)
Answer:
x=-8
Have a wonderful day!!!
solve -3/8y=-24 urgent it’s a timed test!
Answer:
y = 64Step-by-step explanation:
-3/8y = -24
-3y = -24 (8)
y = -192 / -3
y = 64
In the given figure QR ∥AB, RP∥ BD,CQ=x+2,QA=x,CP=5x+4,PD=3x.The value of x is
Answer:
by BPT it will be solved
Step-by-step explanation:
CQ/QA=CP/PD
x+2/x=5x+4/3x
by cross multiplication
answer will be 1
Parallel sides are sides that are equidistant from one another. The value of x is 1
Given that:
[tex]CQ = x + 2\\QA = x\\CP = 5x + 4\\PD = 3x[/tex]
Since:
QR & AB are parallel, and RP & BD are parallel.
Then by theorem of similarities:
[tex]\frac{CQ}{QA} = \frac{CP}{PD}[/tex]
This gives:
[tex]\frac{x+2}{x} = \frac{5x + 4}{3x}[/tex]
Multiply both sides by 3x
[tex]3x \times \frac{x+2}{x} = \frac{5x + 4}{3x} \times 3x[/tex]
[tex]3 \times (x+2) = 5x + 4[/tex]
Open bracket
[tex]3x+6 = 5x + 4[/tex]
Collect like terms
[tex]5x - 3x = 6 -4[/tex]
[tex]2x = 2[/tex]
Divide both sides by 2
[tex]x = 1[/tex]
Read more about parallel sides at:
https://brainly.com/question/1674780
MATTRICES PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!!!!!!
Answer:
I think the best answer for me would be c if thats wrong sry
I hope this helps :)
I need help with this question
Answer:
2x-y = 2
Step-by-step explanation:
Answer:
2x-y=2
hope it helps
thank you
3x 45 help Pleasssssse
Answer:135
Step-by-step explanation:45+45=90 90+45=135
samuel needs to mail a package to his friend in new york. he places an address label with length represented by the function f(x)=3x^3
Answer:
what is the question
Step-by-step explanation:
is Gobbledygook a word
Answer:
Lol that is a word.
on of Tho Mcd
8. Write the standard form of the equation y + 4 = - 12 (x – 1).
Answer:
12x + y = 16
Step-by-step explanation:
Standard Form: Ax + By = C
Step 1: Write point-slope form
y + 4 = -12(x - 1)
Step 2: Find slope-intercept form
y + 4 = -12x + 12
y = -12x + 16
Step 3: Find standard form
12x + y = 16
What's b/2-14=8 Equal ?
Answer:
1. add 14 to both sides
b/2 = 8E + 14
2. multiply both sides by 2
b = (8E + 14) x 2
3. regroup terms
b = 2(8E + 14)
Hope this helped :)
How much is 40 gallonsMai is filling her fish tank. Water flows into the tank at a constant rate. Complete the table below and answer the following questions. time (minutes) water (gallons) Please help asap!!
determine the effects on the graph of the parent function f(x)=x+10 when g(x)=0.3f(x)
Answer:
First, remember the definition of a vertical contraction/dilation.
If we have a function f(x), and we dilate it with a factor A, such as:
g(x) = A*f(x).
If A is larger than 1, then we are dilating the graph of f(x)
if A is smaller than 1, then we are contracting the graph of f(x).
In this case we have:
f(x) = x + 10 and g(x) = 0.3*f(x) = 0.3*x + 0.3*10 = 0.3*x + 3.
A = 0.3
then we have a contraction.
From this, we can conclude that the effects of this transformation in the graph will be that the graph of g(x) will be a vertical contraction of the graph of f(x).
(Where contracting means that in a given interval [x1, x2] the associated interval [f(x1), f(x2)] will be larger than [g(x1), g(x2)])
Below you can see both graphs, and see the difference between them, where green is f(x) and blue is g(x)