Answers
20:5
x:4
Cross multiply
5x= 80
Divide both sides by 5
80/5 is 16
x is equal to 16
Related Questions
25(x+5\4)^2-16(x7\4)^2 factorize the expression
Answers
Since both terms are perfect squares, factor using the difference of squares formula,
a² − b² = (a + b) (a − b) where a = 5(x + 5/4) and b = 4 (x (7/4) ).
− (12x + 25/4) (2x + −25/4)
The following data relates to the scores obtained by 9 salesmen of a company in an intelligence test and their weekly sales in thousands of Rs.
Salesmen:
A
B
C
D
E
F
G
H
I
Test score :
50
60
50
60
80
50
80
40
70
Weekly sales :
30
60
40
50
60
30
70
50
60
Obtain the regression equation of sales on test scores of the salesmen and estimate sales if the test score of a salesman is 65.
Answers
Answer:
y = 0.75x + 5 ;
53.75
Step-by-step explanation:
Giveb the data:
Test score :
50
60
50
60
80
50
80
40
70
Weekly sales :
30
60
40
50
60
30
70
50
60
The linear regression equation model obtained from the online regression equation is :
y = 0.75x + 5 ; where ;
y = weekly sales ; x = test score ; 0.75 = slope / gradient ; 5 = intercept
sales if the test score of a salesman is 65.
y = 0.75x + 5
x = 65
y = 0.75(65) + 5
y = 48.75 + 5
y = 53.75
Divide 5 liters in the ratio 11:5:9. Give your answer in milliters.
Answers
Answer: we have 2,200milliters, 1000milliters, 1800milliters.
Step-by-step explanation:
Step 1
1 Liter= 1000 millilitres
5 liters = 5000 millilitres
Step 2
Dividing 5000 ml in the ratio 11:5:9
First, we find the Total ratio = 11+5+9 = 25
Such that
First part = 11/25 x 5000 = 2,200milliters.
Second Part = 5/25 x 5000=1000milliters.
Third part =9/25 x 5000=1,800milliters.
In the context of sampling plan, a comprehensive record of each individual in the population of interest is known as a ________.
Answers
Answer:
The correct answer is Census
Step-by-step explanation:
According to the given scenario, the record for each and every individual with respect to the population who has the interest is known as the census. The census means the information received for each and every population member
Therefore as per the given situation, the term that should be used is census
yx = -wvu
v =
Please help asap
Answers
Answer: v = yx/-w + u
Step-by-step explanation:
cancel -w by dividing and cancel u by dividing
8 minus the sum of 5 and 43 divided by 8
Answers
[tex]\huge\star\underbrace{\mathtt\red{«♠A} \mathtt\green{n♣ }\mathtt\blue{ §} \mathtt\purple{w}\mathtt\orange{£} \mathtt\pink{r♪»}}\star\:[/tex]
8 - (5+43) /8
=> 8 - 48/8
=> 8 - 6
=> 2
Step-by-step explanation:
Hope it helps you tho...!!!!!!!!!!!!!!!!!
Find the measures of center for following. Data Frequency 30 - 34 1 35 - 39 0 40 - 44 3 45 - 49 7 50 - 54 5 55 - 59 10 60 - 64 10 65 - 69 21 70 - 74 12 mode
Answers
Answer: the mode is 67.2
Step-by-step explanation:
Given that;
Data Frequency
30 - 34 1
35 - 39 0
40 - 44 3
45 - 49 7
50 - 54 5
55 - 59 10
60 - 64 10
65 - 69 21
70 - 74 12
Mode = ?
we know that mode is the number that has the highest number of appearance of frequency, so in this case, the data group that has the highest frequency (21) is 65 - 69
Lower class boundary of the modal group; L = 65
Frequency of the group before the modal group; Fm-1 = 10
Frequency of the modal group; Fm = 21
Frequency of the group after the modal group; Fm+1 = 12
Group width; G = 4
Now using the formula
Mode = L + [ (Fm - Fm-1) / ( (Fm - Fm-1) + (Fm - Fm+1) ) ] × W
so we substitute
Mode = 65 + [ (21 - 10) / ( (21 - 10) + (21 - 12) ) ] × 4
= 65 + [ 11 / 20] × 4
= 65 + 2.2
= 67.2
Therefore the mode is 67.2
PLEASE HELP ME! I’m begging you please
Answers
1. 4.5675 x 10 to the third = 4567.5
2. 98 divided by 10 to the negative second = 0.98
2. 98 divided by 10 to the negative third = 0.098
Hope that helps :)
Answer:
1. 456.75 4567.5
2. 0.98 0.098
3. 2.4
4. 12,300
5. 809.200
6. 0.13
7. 42,608
8. 18
9. 280
10. 23
11. 950
12. 0.26
13. 9,500
14. 6.4
15. 280 3.06 0.2
16. 0.086 8,620 3.624
Use the diagram to find the value of a. The parallel lines
are marked.
62
45
73
106
Answers
Answer:
62
Step-by-step explanation:
Notice that angles <a and that labeled 62 degrees are corresponding angles between parallel lines, and therefore, must be congruent.
Therefore:
<a = 62 degrees.
I WILL GIVE BRAINLIEST!!!!!!!! ASAP
Answers
Answer:
no se ve bien no puedes subirla en foto?
Step-by-step explanation:
Carlos bought the items shown in the
table. What was the total cost, not including tax?
Answers
the fact that there is no chart makes it hard
Step-by-step explanation:
If you start with a board that is 2 3/8" wide and you trim off (cut off) 1 1/4", how wide will your board be?
Answers
Answer:
1 1/8"
Step-by-step explanation:
First, make a common denominator.
1 1/4 = 5/4 * 2/2 = 10/8 = 1 2/8
2 3/8 and 1 2/8
Then, subtract.
2 - 1 = 1
3/8 - 2/8 = 1/8
1 1/8"
Help and show your work
Answers
Answer:
x=3
Step-by-step explanation:
First start by simplifying the right side which is -5(x-8)+4. Apply the distributive property to have -5x-5*-8+4. Then simplify to -5x+40+4, and then to -5x+44. Now you are left with 14+5x = -5x+44. Move -5x to the left side, which now makes it positive, and do 5x+5x to have 14+10x=44. Now move 14 to the right side and subtract it from 44 to get 10x=30. Now divide both sides by 10 to have x=3.
Answer:
x=-5
Step-by-step explanation:
14 + 5x = -5(x-8)+4
14+5x=-5x+40+4
14+5x=-5x+44
14+10x=44
10x=30
x=3
sin^2(a+b)-sin^2(a-b)=sin(2a)sin(2b)
Answers
Answer:
Step-by-step explanation:
To prove sin(a+b)*sin(a-b)=cos^2b-cos^2a
we simplify the left side sin(a+b)*sin(a-b) first
sin(a+b) = sin a cos b + cos a sin b
sin(a-b) = sin a cos b - cos a sin b
sin(a+b)*sin(a-b) = (sin a cos b + cos a sin b) x (sin a cos b -cos a sin b)
sin a cos b((sin a cos b + cos a sin b) - cos a sin b (sin a cos b + cos a sin b)
open the bracket
sin a cos b(sin a cos b) + sin a cos b(cos a sin b) -cos a sin b (sin a cos b)+ cos a sin b ( cos a sin b)
sin²a cos²b + sin a cos b cos a sin b - cos a sin b sin a cos b + cos²a sin²b
sin²a cos²b + 0 + cos²a sin²b
sin²a cos²b + cos²a sin²b
sin²a = 1-cos² a
sin²b = 1-cos² b
(1-cos² a)cos² b - cos² a(1-cos² b)
= cos² b - cos² a cos² b - cos² a +cos² a cos² b
choose like terms
cos² b - cos² a - cos² a cos² b + cos² a cos² b = cos² b - cos² a + 0
cos² b - cos² a
left hand side equals right hand side
What does -4(3x-7) =
Answers
Answer:
-12x+28
Tell me if u need an explanation!
Hope this Helps!!!
Emoya bought a dress for $180 and she recieves a discount of 10%. the amount of discount she recieves is ?
Answers
Answer:
18 Dollars
Step-by-step explanation:
180 X .10 = 18 dollars of discount
180-18= 162 is the total of what she paid for the dress
I hope this helped you
lost is to woods as what is to sea
Answers
what is 0.246 divide by 6
Answers
Answer:
I believe answer is 0.041
Answer:
The answer is 0.041Step-by-step explanation:
I hope it helps ❤❤❤please help please asap
Answers
Answer:
[tex]9\frac{3}{4} , 9.5 , 9 \frac{3}{8} , 9.175[/tex]
Step-by-step explanation:
What is [(5387x29) + (3255x73)]
Answers
Nobody wants to answer my questions for brainliest
Do the boyz got me do?
Answers
12h = 132
h=
i need to know how to do that ^
Answers
Answer:
h=11
Step-by-step explanation:
divide:
132/12h
11h
Answer:
11
Step-by-step explanation:
You divide each side by 12 in order to isolate the h
So: 12h = 132
____ _____
12 12
h = 11
I,l give thanks and brainliest to whoever answers correctly ^_^
Answers
Answer:
[tex]\frac{20}{63}[/tex]
Step-by-step explanation:
The lengh times width results in 63, 20 of the 63 squares are shaded.
69 x 206
anyone wanna ch.at?
Answers
Answer:
14,214
Step-by-step explanation:
no
hope it helps!
Answer:sure y not?
Step-by-step explanation:
11. What is diction? *
Answers
Answer:
Step-by-step explanation:
the choice and use of words and phrases in speech or writing.
need the answer pleas thx1
Answers
Answer:
n = 1.42857
Step-by-step explanation:
if a2 is -140 then somewhere between is -100. 3/7 is equal to 0.42857142857 in which it is 3/7 from -70 to -140 in a number range of 1 to 2. 1.42857142857 is your best bet as your answer.
From a population of 200,000,000 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is determined that the sample mean is 56. The standard error of the mean is
Answers
Answer:
The standard error of the mean = 2
Step-by-step explanation:
Given that:
The standard deviation σ = 14
The sample size n = 49
The sample mean [tex]\overline x[/tex] = 56
The formula for calculating the standard error can be expressed as:
[tex]S.E = \dfrac{\sigma}{\sqrt{n}}[/tex]
[tex]S.E = \dfrac{14}{\sqrt{49}}[/tex]
[tex]S.E = \dfrac{14}{7}[/tex]
S.E = 2
Therefore, the standard error of the mean = 2
Solve 4x + 3y = 2 for y.
Question 5 options:
A)
y = 4x – 2
B)
y = –4∕3x + 2∕3
C)
y = 4∕3x – 2∕3
D)
y = –4x + 2
Solve 5(2x – 3) = x – 15 + 9x for x.
Question 14 options:
A)
0
B)
Infinitely many solutions
C)
–18∕5
D)
–12∕5
Solve 5(2x – 3) = 5x – 10 for x.
Question 16 options:
A)
– 1
B)
1
C)
0
D)
2
Solve |5x – 1| = |2x + 5|
Question 18 options:
A)
x = 2 or x = –4∕7
B)
x = 1∕2
C)
No solutions
D)
x = –1∕2 or x = –7
Solve |7h + 1| = |3h – 7| for h.
Question 19 options:
A)
–2 or 2
B)
–2 or 3∕5
C)
2 or –3∕5
D)
–3∕2 or 3∕5
Answers
Answer:
2. A
4. D
Step-by-step explanation:
it might be right dont know good luck-_-||
what is the averageof 02.15 + 03.25 + 04.23 + 05.01 = 14.64? so what is the average of 14.64 basically.
Answers
Answer:
3.66
Step-by-step explanation:
You have four numbers which sum equals 14.64. Now you divide 14.64 by 4 to get 3.66, or the mean/average
What is √192 expressed in simplest radical form?
Answers
Answer:
a
Step-by-step explanation:
the answer is a
√192=13.85.....
8√3= 13.85
answer is a