Answer: 71.36
8.45
Step-by-step explanation:
Answer:
σ2 = 71.36
σ = 8.45
Step-by-step explanation:
got it right on edg
A weed control company claims that each application of its product eliminates 1/2 of weeds. The number of weeds is modeled by f(x)a0(1/2)*x, where A0 is the initial number of weeds and X is the number of applications. Select the graph of function if there are 50 weeds to eliminate.
Answer:
C
Step-by-step explanation:
Adam is going to make concrete.
He is going to use:
180 kg of cement
375 kg of sand
1090 kg of stone
Cement, sand and stone are sold in bags:
1 bag cement 25 kg
1 bag sand 22.5 kg
1 bag stone 50 kg
Adam already has:
8 bags of cement
19 bags of sand
20 bags of stone
Work out what bags he needs to buy to make the concrete.
Working must be shown please.
Answer:
Stone
Step-by-step explanation:
The answer is on the paper.
Answer:
Step-by-step explanation:
What are the x intercept and the y intercept of this function
Answer:
D
Step-by-step explanation:
When you graph, you can see that the Line crosses the x at (-3,0) and then passes through the y at (0, 12)
Answer:
D
Step-by-step explanation:
To find the intercepts, set the variable you are not trying to find to 0. Also, in case you don't know, f(x) and y are the same thing here. So on this question, it would be:
X-Intercept:
0=4x+12
-12=4x
-3=x
so x intercept is (-3,0)
Y-Intercept:
y=4(0)+12
y=12
so y intercept is (0,12)
How do I answer this
Answer:
Step-by-step explanation:
A. Model is linear
B. y = -16x - 16
(-3, 32) (-2, 16)
(16-32)/(-2 + 3) = -16/1= -16
y - 32 = -16(x + 3)
y - 32 = -16x - 48
y = -16x - 16
The total number of eggs in k cartons where each carton contains n eggs. Write this as an expression.
｡☆✼★ ━━━━━━━━━━━━━━ ☾
It makes more sense if you think about it in numerical terms.
Say if there were 10 eggs per carton and there were 5 cartons, what would you do to find the total?
You would multiply them
It is the same in this case
The expression would be n x k
It can be written as just nk though
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
｡☆✼★ ━━━━━━━━━━━━━━ ☾
Answer:
k cartons = total number of eggs
1 carton = n eggs
Step-by-step explanation:
What is the rate of change between (29,9) and (33,10)?
Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
The rate of change is a measure of the slope
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (29, 9) and (x₂, y₂ ) = (33, 10)
m = [tex]\frac{10-9}{33-29}[/tex] = [tex]\frac{1}{4}[/tex] ← rate of change
The price of the box of 10 markers is $7. The price of the box of 24 markers is $14. All prices without tax, and the price of the boxes is the same. WILL MARK BARINLEIST OR WHATEVER YOU CALL IT I WILL
a) Write an equation which tell the price Y for the number of markers X
The linear equation where y is the price of the number of markers x is as follows:
y = 1 / 2 x + 2Let
the price of each marker = y
Therefore,
The price of a box with 10 markers = $7
The price of a box with 24 markers = $14
(10, 7)(24, 14)
Using linear equation
Slope intercept formy = mx + bwhere
m = slope
b = y-intercept
Therefore,
m = 14 - 7 / 24 - 10
m = 7 / 14
m = 1 / 2
Therefore, let's find b
7 = 1 / 2(10) + b
7 - 5 = b
b = 2
Therefore, the linear equation where y is the price of the number of markers x is as follows:
y = 1 / 2 x + 2learn more on equation here:https://brainly.com/question/12043800
Answer:
y = 1/2x+2
Step-by-step explanation:
We have two points ( 10,7) and (24,14)
We need to determine the slope using the slope formula
m = ( y2-y1)/(x2-x1)
= ( 14-7)/(24-10)
= 7/14
= 1/2
The slope is 1/2
The slope formula is y=mx+b where m is the slope and b is the y intecept
y = 1/2x+b
Using one of the points
7 = 1/2 (10)+b
7 = 5+b
7 -5 =b
2=b
y = 1/2x+2
liz is installing a tile backsplash. if each tile is an equilateral triangle with sides that measures 6 cm in length how many tiles does she need to cover an area of 1800 cm²
Answer:
116 tiles
Step-by-step explanation:
You want to know the number of 6 cm equilateral triangle tiles required to cover 1800 cm².
AreaThe area of an equilateral triangle of side s is given by the formula ...
A = (√3/4)s²
The area of a 6 cm equilateral triangle tile is ...
A = (√3/4)(6 cm²) = 9√3 cm² ≈ 15.588 cm²
TilesThe number of tiles required is the total area divided by the area per tile:
1800 cm² / (15.588 cm²/tile) ≈ 115.47 tiles
In order to cover 1800 cm², Liz will need 116 triangular tiles.
Answer:
100 tiles
Step-by-step explanation:
Each tile is an equilateral triangle with sides 6 cm in length, so the area of each tile can be found using the formula for the area of a triangle:
[tex]\sf:\implies{A = (b \times h) / 2}[/tex]
where b is the base and h is the height.
Since each side of the triangle is 6 cm, the base and height of the triangle are both 6 cm, so:
[tex]\sf:\implies{A = (b \times h) / 2}[/tex]
[tex]\sf:\implies{A = (6 \times 6) / 2}[/tex]
[tex]\sf:\implies{A =18}[/tex]
So each tile has an area of 18 cm².
To find the number of tiles needed to cover an area of 1800 cm², divide the total area by the area of each tile:
[tex]\sf:\implies{A = 1800 / 18}[/tex]
[tex]\sf:\implies{A = 100}[/tex]
Therefore, Liz needs 100 tiles to cover an area of 1800 cm².
Y=3x-16 rate of change?
Answer:
3
Step-by-step explanation:
in slope-intercept form, the slope is the x's coefficient, which in this case is 3,
so, m=3
PLS HELP, I will mark u brainliest if u help me! first person gets it right and does it first.
For a 4 by 4 cube, he needs 4 rows 4 high for 16 cubes in each row.
The back row is 3 x 4 = 12, so he needs 4 more for the back row,
The 3rd row he has 8, so needs 8 more.
The 2nd row he has 4 so needs 12 more,
The first row he has 2 so will need 14 more.
Total needed: 4 + 8 + 12 + 14 = 38 more cubes.
What is the perimeter of a rectangle with a length of 40 feet and a width of 12 feet? A. 32 feet B. 64 feet C. 104 feet D. 480 feet
Answer:
C. 104 feet
Step-by-step explanation:
The formula for the perimeter of a rectangle is p= 2(L+W). All you have to do is plug in your values.
the perimeter of a rectangle is84cm and its length is 6cm longer than its breadth.find the lenth and breadth of the rectangle
So,the length of rectangle is 24 cm
The breadth of rectangle is 18 cm
please see the attached picture for full solution
Hope it helps
Good luck on your assignment
What is a name of the line?
A. I
B. KJ
C. J
D. JI
Answer:
Line JI (Option D)
Step-by-step explanation:
Always take the 2 points of the line to name the line.
Answer:
D. JI
Step-by-step explanation:
The line can be named any of ...
k . . . name shown next to the lineJI . . . two points on the lineIJ . . . two points on the lineOf these, JI is on your choices list.
what is the value of x in these questions
a)2x/3=8
b)3x/2=6
c)3x+4=25
d)x/3-2=6
e)x/5+1=5
Answer:
a X=12
B X=4
C X=7
D X=24
E X=20
Answer:
a) 12 b) 4 c) 7 d) 24 e) 20
Step-by-step explanation:
a)
[tex]2x = 24[/tex]
[tex]x = 12[/tex]
b)
[tex]3x = 12[/tex]
[tex]x = 4[/tex]
c)
[tex]3x = 21[/tex]
[tex]x = 7[/tex]
d)
[tex]x \div 3 = 8[/tex]
[tex]x = 24[/tex]
e)
[tex]x \div 5 = 4[/tex]
[tex]x = 20[/tex]
Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!
Answer:
A and D
Step-by-step explanation:
A cone has a height of 36 cm and a volume of 588π cm3. What is its radius? ( The question I am working on..)
Steps:
Shape: Cone
Solved for radius
Height: 36 cm
Volume: 588 cm3
Formula= r=√3v/πh
R= Radius
H= Height
Description:
Using the formula r=√3v/πh, we have to calculate the radius. We know that the height is 36 and the volume of 588. We use the formula and get the answer. The answer we get is r≈3.95cm.
Answer: r≈3.95cm
Please mark brainliest
Hope this helps.
Answer:
r = 7cm
Step-by-step explanation:
[tex]h = 36 \\Volume = 588pi\\r = \\588pi = \frac{1}{3}pir^{2} 36\\Cross-multiply\\1764pi=36pir^{2} \\Divide-both-sides-of-the-equation-by-36pi\\r^{2} =\frac{1764pi}{36pi} \\r^{2} = 49\\Square -root-both-sides-of-the-equation.\\\sqrt{r^{2} } =\sqrt{49} \\r = 7[/tex]
Can someone plzzzzzz help? I'll give points and mark as brainliest!
Answer:
x = 19° ; Write 19° in the box ( don't forgot ° or answer will be incorrect )
Step-by-step explanation:
If XW ║YZ, we can tell that YW is a transversal, as YW ∩ XW, YX;
By alternate interior angles, ∠ ZYW ≅ ∠ YWX, so that ⇒
m∠ ZYW = m∠ YWX,
m∠ YWX = 2x, ⇒ given m∠ ZYW = 2x
By ∑ of angles in triangle Theorem;
m∠ YXW + m∠ XYM + m∠ YWZ = 180° ⇒ through substitution,
( 3x - 5 ) + 90 + ( 2x ) = 180 ⇒ now apply algebra,
3x - 5 + 90 + 2x = 180 ⇒ combine like terms,
3x + 2x - 5 + 90 = 180 ⇒ add,
5x + 85 = 180 ⇒ subtract 85 from either side of equation,
5x = 95, divide 5 on either side,
x = 19°
Solution; x = 19°
Graph the equation below by plotting the
y-intercept and a second point on the
line. When you click Done, your line will
appear.
y=-5x + 2
Answer:
(0,2), (1,-3)
Step-by-step explanation:
Answer:
The first point is on the y-axis where you are pointing at (0,2) Plot the next point down 5 and 1 to the right at (1,-3).
Step-by-step explanation:
In slope intercept form, the coefficient x is the slope. That's -5 in this example. The constant is the y-intercept. That's 2 in this example.
Sara bought a drink for $3 and 5 sandwiches. She spent a total of $23. How much did each sandwich cost?
Answer:$4
Step-by-step explanation: $23 -$3= $20. Then you divide $20 by the number of sandwiches you have: 20/5= $4 per sandwich
Problema:1,745 kilómetros de distancia entre Mérida, Yucatán y Ciudad Victoria, Tamaulipas.1: 100 000 Escala en el mapa.¿Cuántos centímetros representan estos kilómetros en el mapa?
Answer:
1745 centimeters.
Step-by-step explanation:
The first thing is to pass the kilometers to centimeters, we know 1 km equals 100000 cm, therefore:
1745 km * 100000 cm / 1 = 174500000 cm
Now, when applying the scale, we have that it is 1: 100000, so we apply the scale:
174500000 * 1/100000 = 1745
That is to say that on the map those 1745 kilometers represent 1745 centimeters.
ME
What are the solutions to the equation (2x - 5)(3x - 1) = 0?
Answer:
x = 5/2 x = 1/3
Step-by-step explanation:
(2x - 5)(3x - 1) = 0
Using the zero product property
2x- 5 = 0 3x-1 = 0
2x =5 3x = 1
Divide
x = 5/2 x = 1/3
Answer:
6x^2-17x+5
Step-by-step explanation:
Please Help for question 3,4,5,6,7
Answer:
3. From the graph, g(0) = -1.
4. t(x) = 2x + 5
t(0.5) = 2(0.5) + 5 = 1 + 5 = 6
g(6) = 0 (from graph)
5. 15 = 2x + 5
2x = 10
x = 5
6. g(1) = 0
t(0) = 5
7. t(1) = 7
g(7) = -2
Can a right triangle have the measurements of 8,11, and 13?
Answer:
yes it can
Step-by-step explanation:
yes
Answer:
No
Step-by-step explanation:
You need to use the Pythagorean Theorem. This will show you if the ratio between the sides is accurate.
a² + b² = c²
8² + 11² = 13²
64 + 121 = 169
185 ≠ 169
The measurements will not fit in a right triangle.
12.
A $20,000 investment earned a simple interest rate of 5.4%. How much interest was earned in one year?
Answer:
18,920.00
Step-by-step explanation:
discount = x
original price = $20,000
discount% = 5.4%
x/20,000 = 5.4/100
x · 100 = 5.4 · 20,000
100x = 108,000
100x/100 = 108,000/100
x = $ 1,080.00
Sale price = original $ - discount $ = final answer
$20,000 - $1,080 = $18,920.00
Answer:1,080
Step-by-step explanation:
20,000 x .54 equals $1,080
Which sum or difference is modeled by the algebra tiles?
Answer:
C
Step-by-step explanation:
Blue is postive and Red is Negative so you would just write them down as seen and because x^2 is negative in the second equation there will be a subtraction sign to represent it.
Simplify the expression completely. −4g+8−5+ 2g
Answer:
g = 3/2
Step-by-step explanation:
−4g+8−5+ 2g
−4g+ 2g +8-5
-2g + 8 -5
-2g +3
2g = 3
g = 3/2
g = 1 1/2
how would you change x + 3y = 18 -3x - 12y = -75 to eliminate y
Answer: [tex]\bold{y=-\dfrac{1}{3}x+6}[/tex]
[tex]\bold{y=-\dfrac{1}{4}x+\dfrac{25}{4}}[/tex]
Step-by-step explanation:
x + 3y = 18
- x -x
3y = -x + 18
÷3 ÷3 ÷3
y = (-1/3)x + 6
-3x - 12y = -75
+3x +3x
-12y = 3x - 75
÷-12 ÷-12 ÷-12
y = (-1/4)x + (25/4)
Select the correct answer
The graph below represents the following system of Inequalities.
which point (x,y) satisfies the given system of inequalities?
please help :)
Answer:
A
Step-by-step explanation:
Basically we want to find the point that lies in the shaded area and the only one that does so is (2,3).
Answer: A
Step-by-step explanation:
we gotta find the line in the shaded area and
acording to the question the answer must be (2,3).
Hope this helps :)
Every dimension of a triangular pyramid is multiplied by 10 to produce a new figure that is geometrically similar. What effect does this have on the surface area of the pyramid?
A.
The surface area of the pyramid is multiplied by 10.
B.
The surface area of the pyramid is multiplied by 50.
C.
The surface area of the pyramid is multiplied by 100.
D.
The surface area of the pyramid is multiplied by 1,000.
E.
The effect on the surface area cannot be determined.
Answer:
C
Step-by-step explanation:
Since the question is asking for surface area and the dimensions are multiplied by 10, the surface area is multiplied by 10^2, or 100. (For area it would be 10^3, or 1000)
I need help,please.this is an interior angle problem.
Answer:yes
Step-by-step explanation:
<BAC=<BDE
<BCA=BED
