9514 1404 393
Answer:
(b) 9
Step-by-step explanation:
Maybe you want to simplify ...
[tex]\sqrt{81}=\sqrt{9^2} =\boxed{9}[/tex]
The mean of 11 numbers is 49. Removing one of the numbers causes the mean to decrease to 45. What number was removed?
Answer:
89Step-by-step explanation:
The mean:
[tex]\overline{x}=\dfrac{a_1+a_2+a_3+...+a_n}{n}[/tex]
We have:
[tex]\overline{x}=49;\ n=11[/tex]
Then we have
[tex]\dfrac{11\cdot49}{11}=49[/tex]
[tex]n[/tex] - the number
new mean is equal 45.
Therefore we have the equation:
[tex]\dfrac{11\cdot49-n}{11-1}=45\\\\\dfrac{539-n}{10}=45\qquad|\text{multiply both sides by 10}\\\\539-n=450\qquad|\text{subtact 539 from both sides}\\\\-n=-89\qquad|\text{change the signs}\\\\n=89[/tex]
Step-by-step explanation:
(x1 + x2 + ... + x11)/11 = 49
x1 + x2 + ... + x11= 49×11 = 539
(x1 + x2 + ... + x10)/10 = 45
x1 + x2 + ... + x10 = 45×10 = 450
so, the difference in both sums is
539 - 450 = 89
89 was the removed number.
Which ones are true?
Answer:
The first, third and last one are true
Someone, please help me with this. I will give Brainliest
Explanation:
What we need to do here is to take the ratio of the distances of the planets to determine how much farther Neptune is from the sun compared to Mercury:
[tex]\dfrac{D_N}{D_M} = \dfrac{4.503×10^9\:\text{km}}{5.791×10^7\:\text{km}} = 7.776×10^1[/tex]
This means that Neptune is 77.76 times farther from the sun than Mercury is.
Find the slope given these points:
(4,-4) & (2,0)
Answer:
The slope is -2
Step-by-step explanation:
[tex]m = \frac{0 - ( - 4)}{2 - 4 } \\ m = \frac{4}{ - 2 } \\ m = - 2[/tex]
Answer:
this is correct
Explanationsigns
1 quadrant = (+,+)
2 quadrant = (-,+)
3 quadrant = (-,-)
4 quadrant = (+,-)
Equations
So I’m having trouble with this pls explain step by step
Here’s the question
W+2=12
Pls explain
Answer:
w = 10
Step-by-step explanation:
To find the value of w, you need to isolate w on one side.
You can start by subtracting 2 from both sides. What you do to one side of the equation, you have to do to both.
12 - 2 = 10
So now w is isolated and is equal to 10.
w = 10
You can check your work by replacing w with 10 in the equation.
10 + 2 = 12
find the gcf of 27 and 3
Answer:
Step-by-step explanation:
27x3=81
Answer:
It's 3 hope it's help....
1
Write the equation
for this line in
slope-intercept form.
y = -2x + [?]
4-3-4-1
34
op
A 4
B. 2
C -2
D. -12
Answer:
A, -4 is the answer
Step-by-step explanation:
it intersects there
Your neighbour has two children. You learn that he has a son, Samuel. What is the probability that Samuel's sibling is a brother?
Answer:
1/2
Step-by-step explanation:
there is a 50 50 chance that somebody is male or female
Dеtеrmіnе tһе rаnցе օf tһе fսnсtіօn f(х) = 3х - 5 ԝһеn tһе ԁօmаіn іѕ {-4, 2, 9}.
Answer:
range is { - 17, 1, 22 }
Step-by-step explanation:
Substitute the values from the domain (input) into f(x) for range
f(- 4) = 3(- 4) - 5 = - 12 - 5 = - 17
f(2) = 3(2) - 5 = 6 - 5 = 1
f(9) = 3(9) - 5 = 27 - 5 = 22
range is { - 17, 1, 22 }
Owen paid $15 to download some of his favorite songs. He paid $2.50 per song. How many songs did he download?
The first step is to by a power of ten, so the divisor is a whole number.
The next step is to by figuring out how many times 250 goes into 1500.
What is the answer to this problem?
Answer:
infinitely many solutions
Step-by-step explanation:
GIVING BRAINLIST TO FIRST RIGHT ANSWER NO BOTS
1. How do you know if you should multiply or divide when converting measurements?
Step-by-step explanation:
when using similar processes to converting from smaller to large units. When converting a large unit to a smaller one, you can multiply;when you convert a smaller unit to large one, you can divide.
What's next in this sequence? 4,8,16,32,64 _?
consider the line y= -9x + 5
Answer:
x= 5/9
Step-by-step explanation:
y=-9x+5
0=-9x+5
9x=5
x=5/9
(10 points!!!) AND I’LL MAKE YOU BRAINLEST
I ALREADY KNOW THE ANSWER I JUST WANT THE EXPLANATION!!
The answer is ( Jose, $901.31 more)
Janell deposits $2,000 and for 5 years leaves it in an account earning 3% annual interest, compounded quarterly. For 5 years, José saves and deposits $150 per quarter in an account earning 3% interest compounded quarterly. Who will have more money in the account after 5 years? How much more?
Use the table below to answer:
Answer:Jose will make 901.31 more
Step-by-step explana
Solve this system of linear equations. Separate
the x- and y-values with a comma.
-20x = -16 - 9y
- 14x = -22 - 9y
Answer:
(x, y)
(-1, -4)
Step-by-step explanation:
[tex]-20x=-16-9y\\-14x=-22-9y[/tex]
Solve by elimination, subtract the 2nd row from the 1st row:
[tex](-20x-(-14x))=(-16-(-22))+(-9y-(-9y))\\(-20x+14x)=(-16+22)+(-9y+9y)\\-6x=6[/tex]
Solve for x in the equation above
[tex]-6x=6\\x=-1[/tex]
Now we have the value of X, substitute it into any of the 2 original equations:
[tex]-20x=-16-9y\\-20(-1)=-16-9y[/tex]
Solve for y:
[tex]-20(-1)=-16-9y\\20=-16-9y\\36=-9y\\-4=y\\y=-4[/tex]
Please mark brainliest if this answer helps you. I can provide more information if needed.
15-3x when x = to -2
Answer:
21 is the answer
Step-by-step explanation:
Given:
x = -2Let's use the given clue to solve the problem.
15 - 3x = Solution
=> 15 - 3(-2) = Solution
=> 15 + 6 = Solution
=> 21 = Solution
After working on this problem, we can conclude that 21 is our answer.
- [tex]GenuisUser[/tex] -
Answer:
21
Step-by-step explanation:
So, when given a question like this, we must plug in the number give for "x" in the equation.
[tex]15-3x = 15-3(-2)[/tex]
Now, we can simplify using PEMDAS
[tex]15+6 = 21[/tex]
Dont forget that a negative times a negative equals a positive!
The sale price of a bike after being discounted 20% is $213.20. Which equation can you use to find the original cost of the bike b?
Answer:
266.5%
Step-by-step explanation:
The sale price of a bike after being discounted 20% is $213.20. Which equation can you use to find the original cost of the bike b?
213.2 : 80 = x : 100
x = 213.2 * 100 : 80
x = 266.5
------------------------------
check
266.5 - 20% = 213.2
the answer is good
Select the geometric figure that correctly matches with the following formula:
A=LW
Answer:
Square because the area of a square is length times width.
The formula matches with square.
What is Geometry?A branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces, and solids
As,
First, Area of circle = πr²
Hence, it is not possible.
Second, square
Area of square = l * b = LW
Similarly for trapezium
Area= 1/2( a+ b)* h
Hence, the formula matches with square figure.
Learn more about geometry here:
https://brainly.com/question/12168921
#SPJ2
Original Price of a computer $2,600.00 Tax:6.4%
Scores in the first and final round for a sample of 8 golfers who completed golf tournament as shown below. Golfer First Round Final Round 1 73 78 2 68 75 3 70 66 4 67 71 5 71 73 6 70 68 7 68 65 8 73 72 a. State any appropriate hypothesis that can be tested for the above data. Use 2% level of significance to test the stated hypothesis. Use p-value approach
Answer:
golfing is fun but not to fun
Step-by-step explanation:
Dеtеrmіnе tһе domain օf tһе fսnсtіօn f(х) = 2х + 1 ԝһеn tһе range іѕ {-3, 9, 15}.
x = -3 ==> 2(-3) + 1 = (-6) + 1 = -5
x = 9 ==> 2(9) + 1 = 18 + 1 = 19
x = 15 ==> 2(15) + 1 = 30 + 1 = 31
Domain = (-5, 19, 31)Calculate the residual based on the know information: Actual = 8.1 yds Predicted = 9.1 yds
Answer:
okkkkkkkkkkkkkkkkkkkk
you will receive a golden cookie and 30 points if you help me
Answer:
A: -5/4 ; B: -0.5 ; C: 2
Step-by-step explanation:
Its the number line which shows.
Answer:
B = -0.5
A= -5/4
C= 2
Brainlest
Step-by-step explanation:
HELP!!!!
Which situation best represents the equation below?
A. each day, 2.5 inches of water evaporates from the experiment.
B. Two cartons of eggs ring up at the register for $2.50.
C. A bank account is opened with a balance of $5, and $2.50 is deposited each day.
D. John is 2.5 times as big as his brother Sam.
Answer:
c
Step-by-step explanation:
Please answer soon 15 points try to include explanation
Answer:
36 units
Step-by-step explanation:
The segment joining the midpoints of two sides of a triangle is half the length of the third side, then
AC = 2 × 7 = 14
BC = 2 × 5 = 10
AB = 2 × 6 = 12
perimeter of Δ ABC = 14 + 10 + 12 = 36
The larger of 2 numbers is 2 more than five times the smaller number. if the sum of the two numbers is 80, find both numbers
Answer:
The larger number is 67 and the smaller number is 13
Step-by-step explanation:
y=5x+2
x+y=80
-5x+y=2
6x=78
x=13
y=65+2
y=67
PLEASE HELP ME!!
use the correct form of ser and use a pronoun
Gabriela _____ mi hermana
Answer:Gabriela es mi hermana
Step-by-step explanation:
Multiply: (3x + 2)(4x + 2)
7 x2 + 12 x + 4
12 x2 + 14 x + 4
3 x2 + 4 x + 2
12 x2 + 18 x + 2
Answer:
12x²+14x+4
Step-by-step explanation:
(3x+2)(4x+2)
you will coil, multiply first term from the first bracket with the 1st term of the second bracket, and again with the 2nd term of the second bracket
do the same with the 2nd term of the first bracket, you will get the following
12x²+6x+8x+4
12x²+14x+4