Answer:
the combined mean and standard deviation for these exams are
mean = 5.84
standard deviation = 1.766
Step-by-step explanation:
Given that;
mean score and standard deviation of AP biology was;
x'1 = 3.10, S1 = 1.05
mean score and standard deviation of AP US History was;
x'2 = 2.74, S1 = 1.42
Now combined mean = x'1 + x'2 = 3.10 + 2.74 = 5.84
standard deviation combined = √( S1² + S2²)
= √( (1.05²) + (1.42)²)
= √( 1.1025 + 2.0164)
= √3.1189
= 1.766
Therefore
the combined mean and standard deviation for these exams are
mean = 5.84
standard deviation = 1.766
Do me this options same value of 65% of 20
Answer:
65% of 20 is 13
Step-by-step explanation:
Multiply 0.65 by 20
(0.65 is the same as 65%)
13
Help
Djdjdjjdjdjdjdjdjdjdjdjdjdj
Answer:
B. Corresponding
Step-by-step explanation:
The angles are across from each other so they are corresponding angles.
Answer:
It's C. Vertical angle! Please mark me brainliest!!
Step-by-step explanation:
It's not B because look at this pic.
It's C. look at this pic.
Find x
13x+5)
(6x – 14)°
y + 8)
Answer:
X=21
Step-by-step explanation:
3x+5+6x-14=180
9x-9=180
9x=180+9
9x=189
x=21
Which phrase best completes the list?
Types of Expenses - Taxes
Apply to money earned and spent
Usually take up about 14 percent of a person's income
?
A. Are paid to the government
B. Allow a person to buy a home
C. Pay for vital services like water
D. Do not need to be paid every year
Answer:a
Step-by-step explanation:
The solution is, O A. Are paid to the government, the phrase best completes the list. Types of Expenses.
Here, we have,
Explanation:
Utilities are expenses on essential and vital services common to households and businesses. They include water and sewage bills, electricity bills, and garbage disposal expenses. A firm offering such services generate utility bills. The cost covers a regular period, say mostly monthly.
Heating and internet or data costs are also being considered as utility expenses. They are common and essential for domestic and business use.
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2. What is the greatest
common factor of 18 and
36?
A.18
B. 36
C. 72
D. 144
Answer: 18 and 36 is A.
Step-by-step explanation:
Find the slope of the line through (2, -3) and (5, -3)
Answer:
0
Step-by-step explanation:
We can find the slope by using the slope formula
m = ( y2-y1)/(x2-x1)
= ( -3 - -3)/ ( 5-2)
= ( -3+3)/(5-2)
= 0/3
=0
The mean height of women in a country (ages 20 - 29) is 64.3 inches. A random sample of 65 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume o = 2.81. The probability that the mean height for the sample is greater than 65 inches is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Clear All All parts showing e
Answer: 0.4016
Step-by-step explanation:
Let x be a random variable that represents the height of women in a country.
Mean : [tex]\mu=64.3[/tex] inches
Sample size : n= 65
Standard deviation: [tex]\sigma=2.81[/tex]
The probability that the mean height for the sample is greater than 65 inches = [tex]P(x>65)=1-P(x<65)[/tex]
[tex]=1-P(\dfrac{x-\mu}{\sigma}<\dfrac{65-64.3}{2.81})\\\\= 1-P(z<0.2491)\\\\=1-0.5984\ \ \ \text{[By p-value table]}\\\\=0.4016[/tex]
Hence, the probability that the mean height for the sample is greater than 65 inches = 0.4016
[tex]2s+5\geq 49[/tex]
Answer:
s≥22
Step-by-step explanation:
49-5
2s≥44
divide both sides of the inequality by 2
so 2s≥44 then turn into s≥22
−6x + 6y = 6 −6x + 3y = −12
Answer:
x = 0
y = 2
Step-by-step explanation:
−6x + 6y = 6 −6x + 3y = −12
-6x+6x+6y-3y = 6
3y = 6
y = 2
checking:
6-6x+3.2 = -12
6-6x+6 = -12
12-6x = 12
x = 0
checking 2:
since x = 0 we ignore it and its multipliers from the equation:
6y=6+3y = 12
6.2 = 12 (check)
6+3.2 = 12
6+6 = 12 (check)
find the value of x 2x = 98² - 2²
Answer:
x = 4800
Step-by-step explanation:
2x = 98^2 - 2^2
2x = 9604 - 4
2x = 9600
x = 4800
Answer:
x = 4800
Step-by-step explanation:
98^2=9604
2x=9604-2^2
2^2=4
2x=9604-4
2x=9600
2x/2 = 9600/2
x = 4800
F = xi+yj+2zk and σ is the portion of the cone z=x2+y2−−−−−−√ between the planes z=4 and z=5 oriented with normal vectors pointing upwards. Find the flux of the flow field F across σ
Last month a car dealership sold 80 cats. Of all cars sold 15% of them were red how many cars that were sold were red
•12
•14
•65
•68
Answer:
12
Step-by-step explanation:
Multiply 80 by .15
it is 12............ :))
20 if u get it right
Step-by-step explanation:
hey there....I only knew the last question
PLEASE HELP I AM STRUGGLING
Answer:
y=-2x+2
Step-by-step explanation:
the slope intercept form is y=mx+b
slope - to find the slope from 2 point you do (y2-y1)/(x2-x1) so it would be
(14-2)/(-6-0). which out simplify to -2.
y-intercept - the y-intercept is given in one of the points (0,2).
Cooper is opening an online savings account to hold his $20,000 emergency fund. The online account pays 1.5% interest compounded monthly. If Cooper does not deposit or withdraw any money from the account, how much will be in the account in 25 years
Answer:
After 25 years, Cooper will have $29,093.01 in his savings account.
Step-by-step explanation:
While Cooper opened an emergency savings account of $ 20,000, which yields an annual interest of 1.5% compounded monthly, to determine how much money he will have in his account after 25 years, the following calculation must be performed:
X = 20,000 (1 + 0.015 / 12) 25x12
X = 29,093.01
Therefore, after the passage of 25 years, Cooper will have $ 29,093.01 in his savings account.
HELP PLEASEEEEEEEEEEEEEEE ITS A GRADE
Answer:
1. b
2. d
3. a
4. A
Step-by-step explanation:
Answer: ITs A
Step-by-step explanation:
Because they are all real numbers and the other options are incorrect
Point V is on line segment \overline{UW}
UW
. Given VW=5x-4,VW=5x−4, UV=2x,UV=2x, and UW=5x,UW=5x, determine the numerical length of \overline{VW}.
VW
.
Answer:
Vw=6
Step-by-step explanation:
The numerical length of VW is 16 units.
What are Arithmetic operations?Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.
Operators which let do a basic mathematical calculation
+ Addition operation: Adds values on either side of the operator.
For example 12 + 2 = 14
- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.
For example 12 -2 = 10
Given VW = 5x-4,
VW = 5x−4,
UV = 2x, and
UW = 5x,
By segment addition postulate: UV + VW = UW
Substituting expressions given for each:
⇒ 2x + 5x − 4 = 5x
⇒ 2x = 4
⇒ x = 4
So, VW = 5(4) - 4
VW = 20 - 4
VW = 16
Hence, the numerical length of VW is 16 units.
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A recipe for fruit punch requires 5 cups of pineapple juice and 8 cups of ginger ale. Find the amounts of pineapple juice and ginger ale that must be used to produce different amounts of this punch.
Answer:
answer below
Step-by-step explanation:
simply multiply by different numbers so...
5/8 x 2 = 10/16
5/8 x 3 = 15/24
and so on; as long as it can reduce to 5/8, it works!
A chocolate chip cookie recipe needs 2 cups of chocolate chips and teaspoon of salt. If the recipe is increased to 6 cups of chocolate
chips, how many teaspoons of salt are needed?
Answer:
3 teaspoons
Step-by-step explanation:
Since we need 1 teaspoon for 2 cups, I would only assume we would keep adding a teaspoon for every 2 additional cups of chocolate chips.
2 + 2 + 2 = 6
We would need an additional teaspoon of salt for each of the sets of two.
Evaluate and solve for the variable
7=5b
what is 1234567654323456765432345678876543234567 times 1234567654321234567 times123456788765432345678765432345 times 4 mwahahahhahahahhahah
Answer:
I have no idea
Step-by-step explanation:
sigh
12345676543234567654323456788765 x 1234567654321234567 x 12345678876543234567876543234...
first you start with12345676543234567654323456788765 x 1234567654321234567
=
1.5241573e+49
then you multiply the rest1.5241573e+49 x 12345678876543234567876543234
=
1.8816757e+77
now times by 41.8816757e+77 x 4
=
7.5267028e+77
-------------------------------------------------------------------------------------------------
bro this was so hard , , ,
Help me plz. I’ll give good points.
Answer:
A is the answer because the -T is right at 0
Please help me with this question ASP
Answer:
5/6 pounds
Step-by-step explanation:
2 1/2=5/2. 1/3 of 5/2=1/3•5/2. 1/3•5/2=5/6.
Answer:
5/3
Step-by-step explanation:
[tex]2\frac{1}{2} = \frac{5}{2}[/tex] 5/2 = 15/615/6 × 1/3 = 15/1815/18 = 5/615/6 - 5/6 = 10/610/6 = 5/3I hope this helps!
I need help quick please
Answer:
C.
Step-by-step explanation:
32+8=40
8(4+1)
4+1=5
8*5=40
hope this helps :3
if it did pls mark brainliest
A landscaper plants 18 bushes in a 36-foot section of land along the side of a house. How many bushes does the landscaper plant in a 10-foot section of land?
A.5
B.8
C.9
D.12
Answer:
Step-by-step explanation:
18 x 2 is 36 so to find out how many you could plant in a ten-foot area divide ten by 2 to get five.
Henry decorates the top of each cupcake with 3 walnuts. If he has 56 walnuts, is that enough to decorate 2 dozen cupcakes? Why?
Answer:
No he does not have enough walnuts
Step-by-step explanation:
So if one dozen cupcakes is 12 then two dozen is 24 and each one has 3 walnuts and he only has 56 walnuts then what you have to do is multiply 24 by 3 and get 72 so the answer is no he does not have enough
Answer:
No, in order to decorate 2 dozen cupcakes(24) he needs 72 walnuts. With 56 he can only decorate 18 cupcakes.
Step-by-step explanation:
Wait times for a bus follow a uniform distribution over the interval 0 to 10 minutes. Determine the probability that a person will wait between 4.0 mi
Answer:
P(x=4) = 0.4
Step-by-step explanation:
The density function of a continuous r.v is called a uniform distribution when between the end points any two sub intervals of the same length containing X, have the same probability.
f(x)= 1/ b-a a≤ x≤ b
Here a = 0 and b= 10 but we want to know the probability of wait time between 4 minutes and 10 minutes
P (X=x) = (x-a) 1/(b-a)
P(x=4) = (4-0) 1/ 10-0
= 4/10= 0.4
3. What is the equation of the line that
passes through the point (1,5); and
is parallel to the equation. y= -2x - 4
simplify: 10x-6(7+x)
Answer:
4 x − 4 2
Step-by-step explanation:
Answer:
4x−42
Step-by-step explanation:
10x-6(7+x)
Distribute
10x+(−6)(7)+(−6)(x)
combine like terms
10x+−42+−6x
10x-6x-42
4x+−42
Please answer this ASAP
9514 1404 393
Explanation:
1. ∠BAC ≅ ∠BCA, BD ≅ BE, ∆BDA and ∆BEC are right triangles . . . . given
2. ∆ABC is isosceles . . . . definition of isosceles triangle
3. BA ≅ BC . . . . definition of isosceles triangle
4. ∆BDA ≅ ∆BEC . . . . HL theorem
5. AC ≅ CE . . . . CPCTC