Answer:
Millie is 11. Molly is 8.
Step-by-step explanation:
Step 1: Subtract 3 from 19. The reason why you do this is to make sure that you don't have an extra 3 lying in there for the next few steps.
19-3=16
Step 2: Divide 2 from 16. You do this because there are two sisters.
16÷2=8
8 will then become Molly's age
Step 3: Add 3 to 8. This will give you Millie's age because she is 3 years older than Molly.
3+8=11
In conclusion, Millie is 11 and Molly is 8.
Q4.
From the large data set, the daily total sunshine, s, in Leeming during June 1987 is record.
The data is coded using x = 10s + 1 and the following summary statistics are obtained.
n = 30
Find the mean and standard deviation of the daily total sunshine
ΣΧ =
x=947
S = 33 065.37
XX
Find the mean and standard deviation of the daily total sunshine.
The coding of the statistic is used to make it easier to work with the large sunshine data set
The mean of the sunshine is 3.05[tex]\overline 6[/tex]The standard deviation is approximately 18.184Reason:
The given parameters are;
The sample size, n = 3.
∑x = 947
Sample corrected sum of squares, Sₓₓ = 33,065.37
The mean and standard deviation = Required
Solution:
[tex]Mean, \ \overline x = \dfrac{\sum x_i}{n}[/tex]
The mean of the daily total sunshine is therefore;
[tex]Mean, \ \overline x = \dfrac{947}{30} \approx 31.5 \overline 6[/tex]
[tex]s = \dfrac{x}{10 } - \dfrac{1}{10}[/tex]
[tex]E(s) = \dfrac{Ex}{10 } - \dfrac{1}{10}[/tex][tex]E(s) = \dfrac{31.5 \overline 6}{10 } - \dfrac{1}{10} = 3.05 \overline 6[/tex]
The mean ≈ 3.05[tex]\overline 6[/tex]Alternatively
,[tex]The \ mean \ of \ the \ daily \ total \ sunshine, \, s = \dfrac{31.5 \overline 6 - 1}{10 } = 3.05\overline 6[/tex]
The mean of the daily total sunshine, [tex]\overline s[/tex] ≈3.05[tex]\overline 6[/tex]
[tex]Var(s) = Var \left(\dfrac{x}{10 } - \dfrac{1}{10} \right)[/tex][tex]Var(s) = \left(\dfrac{1}{10}\right)^2 \times Var \left(x \right)[/tex]
Therefore;
[tex]Var(s) = \left(\dfrac{1}{10}\right)^2 \times 33,065.37 = 330,6537[/tex]
Therefore;
[tex]s = \sqrt{330.6537} \approx 18.184[/tex]The standard deviation, [tex]s_s[/tex] ≈ 18.184
Learn more about coding of statistic data here:
https://brainly.com/question/14837870
There are 30 tickets numbered as 1, 2, 3, 4, 30 respectively. One random. What is the probability that the number on the ticket is a multiple 2 or 3
Answer:
2/3 or 66.66%Step-by-step explanation:
Out of 30 numbers, half is multiple of 2 and the third is multiple of 3.
We have 15 even numbers and 10 multiples of 3. Out of 10, half is even numbers and therefore counted twice.
So we subtract 5 to get:
15 + 10 - 5 = 20 numbersIf we chose one ticket at random the probability is:
P(2x or 3x) = 20/30 = 2/3 or 66.66%Classify each number below as a rational number or an irrational number.
Answer:
-15pi = irrational
square root of -3 = irrational
square root of -4 = rational
-1/11 = rational
-27.92 repeated = rational
Step-by-step explanation:
3 ( 4 x - 5 ) = 3 (2 - x)
Write 50 as a product of three primes
Answer: 2*5*5
Step-by-step explanation:
2*5=1-*5=50
2 and 5 are prime numbers.
complete this table so that the relationship is propotional
Answer:
10 and 60
Step-by-step explanation:
hope this helps :)
Of the 258 million tons of waste generated 27 percent was paper. How much paper was thrown away in million tons
Answer:
69,660,000/258,000,000
Step-by-step explanation:
If you do part/whole = %/100 and solve that:
100 can go into 258,000,000 2580000 times, and whatever you do on the bottom must be done on the top, and since 27 is the percentage, 27 x 2580000 = 69,660,000
making the answer 69,660,000/258,000,000
I WILL GIVE YOU BRAINLIEST
Exponent: The number used to indicate how many times the base is a ___________________.
Answer:
An expression that represents repeated multiplication of the same factor is called a power. The number 5 is called the base, and the number 2 is called the exponent. The exponent corresponds to the number of times the base is used as a factor.
If a delivery truck drives 150 miles in 6 hours and maintains that rate of speed,
what is the unit rate for miles per hour?
Answer: 25 miles per hour
Step-by-step explanation:
Speed=Distance/Time
The distance is 150, and the time is 6. So, all we need to do is divide 150 by 6, and we get 25 miles per hour. Hope this helped!
Answer:
Step-by-step explanation:
r = d/t
d = 150 miles
t = 6 hours
r = 150 / 6
r = 25 miles / hour
Classify each number below as a rational number or an irrational number.
Answer:
Step-by-step explanation:
[tex]\sqrt{29} - Irrational[/tex]
[tex]\frac{10}{3} - Rational[/tex]
[tex]-2\pi - Irrational[/tex]
[tex]-52.(92) - Rational[/tex]
[tex]-\sqrt{81} - Rational[/tex]
Helpppp PLZZZZZZZZZZZZ and thank you
Answer:
1. a- rate is 3
b. 25 sec
c. 150 meters
d. d= 3/t
2. Roxanna
a. Jose 35
Marie 49
Melanie 63
PLS HELP! i will mark you the brainliest!!!
1.) 0.3v = 1.35
2.) 2.5 = 15.75
3.) -64.5g = -25.8
4.) -3.2a = -55.68
Does the point (4, -4) satisfy the equation y = -x?
yes
no
Answer:
noo
because we know that (x,y) is the situation
nd the solution in yr question here y is( -)
hope it helps
Answer:
no
Step-by-step explanation:
( x, y ) = ( 4, - 4 )
Here,
x = 4
y = - 4
y ≠ - x
A camera costs 115 Canadian dollars. If each Canadian dollar is worth 0.952 US dollars, how much will the camera cost in US dollars?
Answer:
$109.48
Step-by-step explanation:
If you multiply 115 by 0.952, it will give you the answer which it $109.48 !
Answer:
109.48
Step-by-step explanation:
you have to multiply
.952 × 115
If a b=0&ab, had the value of a
7*4
4*2
(7*4*)*2
2*(7*4)
(4*2)*7
Answer:
5/6
Step-by-step explanation:
Cuanto es (3/5) x(2/3)?
Please solve this its due very soon
Answer:
K < - 16
Step-by-step explanation:
[tex]\frac{2k-3}{-5}[/tex] > 7
Multiply both sides by - 5 to clear the fraction, reversing the symbol as a result of multiplying by a negative quantity.
2k - 3 < - 35 (add 3 to both sides )
2k < - 32 ( divide both sides by 2 )
k < - 16
PLS HELP WILL MARK YOU BRAINLIEST, NO FAKE ANSWERS!
Answer:
This would be A.
Step-by-step explanation:
Because
12[tex]b^{2}[/tex] - 6[tex]b^{2}[/tex] = 6[tex]b^{2}[/tex]
-3b - 3b = -6b
0 + ( -2 ) = -2
6[tex]b^{2}[/tex] - 6b - 2
Hope this helps!
PLS HELP FOR BRAINLIEST JUST PUT THE LETTER
Answer:
10.) A
11.) D
12.) B
13.) C
Step-by-step explanation:
Angle c is congruent to which angles?
A. 1 and 2
B. 2 and 3
C. 3 and 4
D. 1 and 4
Answer:
2, 3
Step-by-step explanation:
Step 2 y = ___ x + 4 What do you divide to both sides of Step 1 to get this result in step 2?
_____________________________________________
Is the Step 2 equation now in slope intercept form? [yes or no] ______
The slope of the line is ________
I will give branliest, thanks so much.
Answer:
divide both sides by 2
yes, it is in slope intercept form.
the slope is 1/2
[tex]2y=x+4[/tex]
Divide by 2
[tex]2y/2 = x/2 + 4/2[/tex]
[tex]y=\frac{1}{2} x +4[/tex]
The equation is now in intercept form
The slope of the line is [tex]\frac{1}{2}[/tex]
There are a total of 448 students at Westover Middle school. A total of 3/8 of the students participate in after-school activities. Of those students, 1/3 do not get home until 7 pm. How many students participate in after-school activities and get home after 7 pm?
Answer:
56 students
Step-by-step explanation:
Given information:
• 448 students total
• [tex]\frac{3}{8}[/tex] of 448 participate in after-school activities
• [tex]\frac{1}{3}[/tex] of those [tex]\frac{3}{8}[/tex] get home after 7 pm
To find how many students is [tex]\frac{1}{3}[/tex] of those who participate in after-school activities, you first need to find the exact number of how many participate in after school activities:
The amount of students who participate in after-school activities is [tex]\frac{3}{8}[/tex] the total number of students. So, multiply 448 × [tex]\frac{3}{8}[/tex]:
448 × [tex]\frac{3}{8}[/tex] Multiply.
[tex]\frac{1344}{8}[/tex] Simplify into a whole number.
1344 ÷ 8 Divide.
168
[tex]\frac{3}{8}[/tex] of the total students is 168 students.
To find the amount of students that do not get home until after 7 pm, multiply 168 by [tex]\frac{1}{3}[/tex]:
168 × [tex]\frac{1}{3}[/tex] Multiply.
[tex]\frac{168}{3}[/tex] Simplify into a whole number.
168 ÷ 3 Divide.
56
The amount of students that participate in after-school activities and get home after 7 pm is 56 students.
Answer:
56 students i will not give explanation
PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS OR WILL BE REPORTED
A box is 15 x 20 inches. In the box there are cut out squares of the same size from each corner. Mark the side of the cut-out square by x. write an expression of the length of the box.
Answer:
İt is solved by using derivative
The edges of box are 20–2x,15–2x and x
Volume=(20–2x).(15–2x).x
İf you take derivative and then find the roots of derivative we obtain exstramum points that means these values make volume maximum or minimum
But
Answer is not rational
Answer:
A = 300-x^2 for area
A = 20L * 15 -x^2 for area
20L - x^2 = 300 - x^2 /15 -x^2 could also work to find length .
SIMPLIFIED
L - x = 300/20 - ( x^2 )/ 15 - x
Step-by-step explanation:
Length = L = 20 inches.
Area of one side = A = 15 X 20 = 300 cm^2
= 300 - x^2
This means the missing corner square is also squared
Simplifies to sqrt 300 - x
but as length was asked 20L * 15 -x^2
we know one side may be 15x 15
and if one side is 15 x 20
then instead of 15 x 15 it may be 15 x 20
eitherway we are looking at one side representing area of one side of the box. 300-x is our answer.
working simustainle 4 fudge machines finish a big job in 32 hours how long would it take if it had 4 times as more machines
Answer:
8 hours
Explanation:
32÷4=8
It takes 4 machines to do something in 32 hours. If you had 4 times more machines it would be 4 times faster.
javier went to cvs to buy bags of candy for his friends for halloween. he bought three more bags of reese's than lollipops and two fewer bags of starburst than lollipops. bags of lollipops cost $3.75 each, bags of reese's cost $5.50 each and bags of starburst cost $4.25 each. He spend a total of $48.50 and was not charged any tax. How many bags of lollipops did javier bought?
The number of bags bought by Javier will be 2.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Javier bought three more bags of Reese's than lollipops and two fewer bags of starburst than lollipops. bags of lollipops cost $3.75 each, bags of Reese's cost $5.50 each, and bags of starburst cost $4.25 each. He spends a total of $48.50.
From the equations and solve them to get the number of lollypops.
R = L+3
L = S - 2
The equation for total cost will be,
3.75L + 5.5R + 4.25S = 48.5
3.75( s - 2) + 5.5( S + 1) + 4.25S
3.75S - 7.5 + 5.50S + 5.5 + 4.25 S = 48.5
13.5S = 48.5 + 2
13.5S = 50.2
S = 4
The number of lollypops will be,
L = S - 2
L = 4 - 2
L = 2
Therefore, the number of bags bought by Javier will be 2.
To know more about expression follow
https://brainly.com/question/723406
#SPJ5
The figures are similar. Find each missing measure.
Find the ratio:
9/27 = 1/3
6 x 1/3 = 2
Answer: b. 2
Answer:
Given that, figure LMNO and figure PQRS are similar
So, RQ / MN = SP / OL
x km / 6 km = 9 km / 27 kmx km / 6 km = 1 km / 3 kmx km = 6 km / 3 kmx = 2 kmb) 2 is the right answer.Please answer it correctly I need it now
Answer:
[tex]5 \\ 2 \div 4 = 2 \\ 2 \div 6 = 3 \\ 2 \div 8 = 4. \\ {2}^{2} [/tex]
Answer:
number 1=2,2
number 2=5,2,3
number 3=2,3,4
number 4=3,6,11
number 5=5,4
Step-by-step explanation:
Number 1 explanation= this is LCM so first LCM blank box to devided is 2 and 2nd box also 2.
Use synthetic division to divide x4 – 5x3 + 2x2 + 6x + 6 by x – 2.
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $28 monthly fee and charges an additional
50.08 for each minute of calls. The second plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls. For how many minutes of calls
w the costs of the two plans be equal?
Answer:
180 minutesStep-by-step explanation:
Let x be the number of minutes of calls.
The first plan has a $28 monthly fee and charges an additional $0.08 for each minute of calls:
p(f) = 0.08x + 28The second plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls:
p(s) = 0.13x + 19When p(f) = p(s) we get the following equation for x:
0.08x + 28 = 0.13x + 190.13x - 0.08x = 28 - 190.05x = 9x = 9/0.05x = 180What is 5x+5x-7=4
Pls answer quick
Answer:
x = 11/10
Step-by-step explanation:
5x + 5x -7 = 4
10x-7 = 4
×=11/10
add 7 to both sides of the equation
simplify
divide both sides of the equation by the same term
simplify