Find the Circumference of the circle:
radious 2 cm
Answers
Answer:
circumference = 12.56 cm
Step-by-step explanation:
circumference=2 x radius x Pi
circumference = 2 x 2 x 3.14
circumference = 12.56
Answer:
were is a circle
Step-by-step explanation:
I dont see it
Related Questions
Which sign makes the statement true?
11
20
? 61%
>
<
Submit
ASAP
Answers
11/20 =.55
61% = .61
.55<.61
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Jack invests $30,000 with an interest rate of 4.5% compounded quarterly. After 6 years, what is the total amount of Jack's investment?
Enter your answer in the box rounded to the nearest cent.
Answers
Answer:
30,324
Step-by-step explanation:
30,000 x 4.5 = 135.00
135.00 x 4 + 540.00 four quarters in a year
6 years x 540 = 3,240
30,000 + 3,240 = 33. 240
experimental and quasi-experimental designs are similar in what aspect of the design?
Answers
Experimental and quasi-experimental designs share similarities in terms of their focus on investigating cause-and-effect relationships. These designs both involve manipulating variables and observing their effects on an outcome of interest.
However, they differ in terms of the level of control the researcher has over the assignment of participants to groups. Experimental designs are characterized by the random assignment of participants to different groups or conditions. This randomization helps ensure that any observed differences between groups can be attributed to the manipulation of the independent variable. The researcher has control over the assignment process, allowing for stronger causal inferences. Quasi-experimental designs, on the other hand, lack the random assignment of participants to groups. This may be due to practical or ethical reasons. Instead, participants are assigned to groups based on pre-existing characteristics, such as age or location. While quasi-experimental designs still allow for the examination of cause-and-effect relationships, they are considered less rigorous than experimental designs due to the potential for confounding variables. In summary, experimental and quasi-experimental designs both aim to investigate cause-and-effect relationships. They differ primarily in the level of control the researcher has over participant assignment. Experimental designs use random assignment for greater control, while quasi-experimental designs rely on pre-existing characteristics.
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What's the value of a in the equation 9a - 4 = 7a ?
Answers
Answer:
a=2
Step-by-step explanation:
Subtract 9a from both sides.
9a and -9a then cancel out and 7a - 9a = -2a
Divide both sides by -2
-2 and -2 cancels out
-4/-2 = 2 leaving you with a = 2
To check your answer plug it in to wherever it says a.
9(2) - 4 = 7(2)
18 - 4 = 14
14 = 14 which is true.
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Answers
Answer:
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Answer:
The answer would be 56 Ft
Step-by-step explanation:
1/4 = 4 ft.
We have 3 1/2 this goes into 1/4 14 times
so we have 14 1/4. Multiple this by 4 for our feet and you get 56 ft.
a large water tank holds 800 gallons of water . it is losing water at the rate shown in the table. PLEASE HELP- I CAN'T FIND ANY ANSWER FOR THIS ANYWHERE
Answers
Part b = true, true, false, I’m not sure abt the last one
The slope of equation is -80 and the equation of a line is y=-80x+800.
What is the equation of a line?The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.
Given that, a large water tank holds 800 gallons of water.
From the table, we have (0, 800) and (1, 720)
Here, slope m=(720-800)/(1-0)
m= -80
Substitute m=-80 and (x, y)=(0, 800) in y=mx+c, we get
800=-80(0)+c
c=800
Substitute m=-80 and c=800 in y=mx+c, we get
y=-80x+800
Therefore, the slope of equation is -80 and the equation of a line is y=-80x+800.
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Which number completes the table for y = x2 - 1?
Answers
a. Drew's team won 92% of the
baseball games they played.
What percent of the games did
they lose?
Answers
Answer:
They lost 8% of the games they played.
Step-by-step explanation:
If the total percent is 100% then we just subtract 92% from that, to get 8% left.
In her math class, carla used unit cubes to build a right rectangular prism with a volume of 24 cubic units. The height of the prism was two units. Which figure could be bottom layer of the prism
Answers
Carla's right rectangular prism could have either a 3x4 or a 2x6 rectangle as the bottom layer, with a height of 2 units, to achieve the given volume of 24 cubic units.
Carla built a right rectangular prism using unit cubes, with a volume of 24 cubic units and a height of 2 units. To determine the possible figure for the bottom layer of the prism, we need to understand the relationship between the volume, height, and the base area.
The volume of a rectangular prism can be calculated using the formula: Volume = Base Area × Height. In Carla's case, the volume is 24 cubic units, and the height is 2 units. By rearranging the formula, we can find the base area: Base Area = Volume ÷ Height. Substituting the given values, Base Area = 24 ÷ 2, which equals 12 square units.
Now, we need to find a possible figure for the bottom layer with an area of 12 square units. Since the bottom layer is made of unit cubes, it must have whole-number dimensions. There are two possible rectangular figures that meet this requirement: 1) a 3x4 rectangle, and 2) a 2x6 rectangle. Both of these figures have an area of 12 square units (3x4 = 12 and 2x6 = 12) and can be formed using unit cubes.
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Given a parallel plate capacitor where the medium between the 2 plates is pure vacuum, the cross sectional area is 6 x 103 m’and the separation between the plates is 5 mm: i. Determine the value of the capacitance for the capacitor. ii. If a 120 V source is connected to the capacitor, determine the magnitude of charge on each plate? iii. Determine the charge on the plate if acrylic is placed between the plates. The thickness of the acrylic sheet is 5 mm and its relative permittivity is given as 6. iv. Calculate the flux density for the capacitor states in part
Answers
i. The capacitance of the capacitor is approximately 53.1 nF. ii. The magnitude of charge on each plate is approximately 6.372 μC. iii. The new capacitance with acrylic between the plates is approximately 318.6 nF. iv. The flux density for the capacitor is approximately 1.2712 μC/m².
i. To determine the value of capacitance for the parallel plate capacitor, we can use the formula:
C = ε₀ * (A / d),
where C is the capacitance, ε₀ is the permittivity of vacuum (8.85 x 10^(-12) F/m), A is the cross-sectional area of the plates, and d is the separation between the plates.
Plugging in the given values:
A = 6 x 10^3 m²,
d = 5 mm = 5 x 10^(-3) m,
C = (8.85 x 10^(-12) F/m) * (6 x 10^3 m²) / (5 x 10^(-3) m)
= 53.1 x 10^(-9) F
= 53.1 nF.
Therefore, the capacitance of the capacitor is approximately 53.1 nF.
ii. The magnitude of charge on each plate can be determined using the formula:
Q = C * V,
where Q is the charge, C is the capacitance, and V is the voltage.
Plugging in the given values:
C = 53.1 x 10^(-9) F,
V = 120 V,
Q = (53.1 x 10^(-9) F) * (120 V)
= 6.372 x 10^(-6) C.
Therefore, the magnitude of charge on each plate is approximately 6.372 μC.
iii. If acrylic is placed between the plates, the relative permittivity (εᵣ) of the medium affects the capacitance. The formula for the capacitance with a dielectric material is:
C' = εᵣ * C,
where C' is the new capacitance with the dielectric, εᵣ is the relative permittivity of the dielectric material, and C is the initial capacitance without the dielectric.
Plugging in the given values:
εᵣ (acrylic) = 6,
C (without dielectric) = 53.1 x 10^(-9) F,
C' = 6 * (53.1 x 10^(-9) F)
= 318.6 x 10^(-9) F
= 318.6 nF.
Therefore, the new capacitance with acrylic between the plates is approximately 318.6 nF.
iv. The flux density (D) for the capacitor can be calculated using the formula:
D = ε₀ * εᵣ * E,
where D is the flux density, ε₀ is the permittivity of vacuum (8.85 x 10^(-12) F/m), εᵣ is the relative permittivity of the dielectric material, and E is the electric field strength.
In the case of a parallel plate capacitor, the electric field strength is given by:
E = V / d,
where V is the voltage applied to the capacitor and d is the separation between the plates.
Plugging in the given values:
ε₀ = 8.85 x 10^(-12) F/m,
εᵣ (acrylic) = 6,
V = 120 V,
d = 5 x 10^(-3) m,
E = (120 V) / (5 x 10^(-3) m)
= 24,000 V/m.
D = (8.85 x 10^(-12) F/m) * (6) * (24,000 V/m)
= 1.2712 x 10^(-6) C/m².
Therefore, the flux density for the capacitor is approximately 1.2712 μC/m².
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Answers
Answer:
9 no answer 10
10 no answer 630
11 no answer 12.56 ft^3
12 no answer 268.1 km^3
Step-by-step explanation:
Evaluate each function for x = -2
1. f(x) = 4x
2. f(x) = 2x + 1
3. f(x) = x2 + x-5
Answers
2. -3
For 3, is x being multiplied by -5 or added? Because if it’s f(x)=x(2)+x(-5) then it’s 6 but if it’s f(x)= 2x + x-5 then it’s -13
Part 1: Given cosine of theta is equal to radical 3 over 2 comma determine three possible angles θ on the domain [0,[infinity]). Part 2: Given θ = 495°, convert the value of θ to radians and find sec θ.
Answers
The required answer is sec θ = -√2.
Explanation:-
Part 1: Given cosine of theta is equal to radical 3 over 2 on the domain [0,[infinity]).
To determine three possible angles θ, the cosine inverse function which is a cos and since cosine function is positive in the first and second quadrant. Therefore conclude that, cosine function of θ = radical 3 over 2 implies that θ could be 30 degrees or 330 degrees or 390 degrees. So, θ = {30, 330, 390}.Part 2:To convert 495° to radians, multiply by π/180°.495° * π/180° = 11π/4To find sec θ, we use the reciprocal of the cosine function which is sec.
Therefore, sec θ = 1/cos θ.To find cos 11π/4, the reference angle, which is 3π/4. Cosine is negative in the third quadrant so the final result is sec θ = -√2.
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Find the value of x and the measure of the angle labeled 3x
3x
27
A. x= 15; angle measure is 27°,
OB. X = 9; angle measure is 27".
C. x= 9; angle measure is 45°
O.D. x= 15; angle measure is 45°
Answers
Answer:
The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115
Step-by-step explanation:
The Central Limit Theorem can also be used to investigate unusual events. An unusual event is one that occurs with a probability of less than ___%
Answers
The Central Limit Theorem can also be used to investigate unusual events. An unusual event is one that occurs with a probability of less than 1%
The Central Limit Theorem can be used to investigate unusual events by calculating the probability of a sample mean being a certain number of standard deviations away from the population mean.
If we assume that the population is normally distributed, then we can use the normal distribution to calculate the probability of observing a sample mean that is a certain number of standard deviations away from the population mean.
An unusual event is typically defined as an event that occurs with a low probability, usually less than 5% or 1%. So, if we observe a sample mean that is more than 2 standard deviations away from the population mean, we can say that this is an unusual event that occurs with a probability of less than 5%. Similarly, if we observe a sample mean that is more than 3 standard deviations away from the population mean, we can say that this is an unusual event that occurs with a probability of less than 1%.
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please i need the complete step-by-step solution for number 4 and 5 .thank you
Answers
Answer:
9162330Step-by-step explanation:
Insert 4 arithmetic means between 2 and 37.
First Step :
《First term 》a1 = 2
《Last term》an = 37
《No. of all terms》 n = 6
Find the common difference (d).
To find the common difference (d).
Use the formula:
an= a1+ (n-1) dan=a1+(n−1)d
Substitute.
37= 2+ (6-1) d37=2+(6−1)d
37= 2+ 5d37=2+5d
(37= 2+ 5d)-2(37=2+5d)−2
37-2= 5d37−2=5d
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56 A motorcycle starts out from a stop sign and
accelerates at a constant rate of 20 m/s. How long
will it take the motorcycle to go 300 meters?
Answers
if (3x_25)⁰ and( x+15⁰) are complemantary angles find the angles. pls answer fast my friend I will mark brainly
Answers
Answer:
50 degrees, 40 degrees
Step-by-step explanation:
3x-25+x+15=90 Complementary angles add up to 90 degrees
4x-10=90
4x=100
x=25
75-25=50 and 25 plus 15=40 50+40=90
x=25°
Further explanationThere are two angles that can form:
• Supplementary Angles: if both angles are added = 180 °
• Complementary Angles: if both angles are added = 90 °
(3x-25)+((x+15)=90
4x-10=90
4x=100
x=25°
6th Grade Math Homework!
Will give brainiest!
15 Points!!
Please solve
ONLY ANSWER IF YOU HAVE THE ANSWERS
Don't need to explain
Keep in mind there are 2 pictures!
PLEASE HELP!! AND FAST!!
Answers
Answer:
The answer to #6 is 255
The answer to #7 is the mint milkshake is thicker
The answer to #8 is A is 12 and B is 18
The answer to #9 is A is 33 and B is 15
Missing values:
1. 1:7 , 3:21, 18:126
2. 20:12 , 10/3:2 , 8 1/3:5
3. 42:21 , 6:3 , 48:24
4. 4:10 , 8:20 , 16:40
5. 36:32 18:16
Step-by-step explanation:
#2: The first ratio is shown, which is 5:3. Meaning, that the bottom number (cakes) is multiplied by 5/3 in order to get the top number (pies). We can apply that to the ratio with 12 cakes, 12 multiplied by 5/3 is 20. The next ratio involved 10/3 pies. Since that is the "top" number (see chart), 10/3 need to be multiplied by 3/5 instead of 5/3. By doing that, the number of cakes is 2.
#7: The ratio of milk to ice cream in the mint milkshake is 1.25:4
The ratio of milk to ice cream in the strawberry milkshake is 1.75:5
When the ratios are divided, the quotient for the mint milkshake (0.3125) is LESS than the quotient for the strawberry milkshake (0.35). This means that there is less milk and more ice cream (ratio-wise) in the mint one.
Number 2 :
A line crosses the coordinates (-3,5) and (4, -2). What is the slope-
intercept form of the equation of this line?
Answers
Answer:
y=-x+8
Step-by-step explanation:
y = mx + b is the basic formula
use the formula y2-y1/x2-x1 to get the slope to get m
-2-5/4-(-3)
-7/7
-1
then use the point slope formula y-y₁=m(x-x₁)
y-5=-1(x-(-3)
y-5=-1x+3
y=-x+8
Find the value of each variable I need 6-10
Answers
Answer:
6) 9x-25+9x-25(sum of base angles)
9x-25+9x-25+104=180(sum of angles in a triangle)
collect like terms
9x+9x-25-25+104=180
18x-50+104=180
18x+54=180
18x=180-54
18x=126
divide both sides by 18
18x÷18=126÷18
x=7
A. X=9
B. X=14
C. X=16
D. X=12
E. X=10
Answers
Answer:
Angle K is 1/2 the measure of arc JL, so JL = 228. Add arc KL to arc JL to get 268 and subtract from 360. 360 - 268 = 92. 8x - 36 = 92. X = 16.
Step-by-step explanation:
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Answers
The opposite of ∠C is 12, the hypotenuse is 20.
sin(C)= 12/20=3/5=0.60
Good luck!
Find the missing side
Answers
Answer:
B
Step-by-step explanation:
cos(35)=x/15
15cos(35)=x
x=12.3
Which line is a linear model for the data
Answers
Answer:
The 4th one/last one
Step-by-step explanation:
If y = 32 when x = 8, find y when x = 30.
Answers
Answer:
The answer would be y = 120.
Step-by-step explanation:
If x is always 1/4 of y, then if x equals 30, y would be 4 times the amount of x. I hope this helps you! :)
Please help, thank you!
Answers
Answer:
62.6
Step-by-step explanation:
Answer The questions Given Below
Answers
(i) The value of angle x, ∠x, is 70°
(ii) ΔABC and ΔADC are congruent by the side-angle-side (SAS) criterion
(iii) The value of angle m, ∠m, is 20°
Calculating the measure of an angles and Congruent trianglesFrom the question, we are to determine the value of angle x.
From the given diagram, we can write that
m ∠x + 110° = 180° (Linear pair theorem)
Thus,
m ∠x = 180° - 110°
m ∠x = 70°
(ii) ΔABC and ΔADC are congruent by the side-angle-side (SAS) criterion
(iii) From the given information, the park was converted into a rectangular form
Thus,
m ∠P = 90°
From the diagram, we can write that
m ∠m + m ∠x + m ∠P = 180° (Sum of angles in a triangle)
Then,
m ∠m + 70° + 90° = 180°
m ∠m = 180° - 90° - 70°
m ∠m = 20°
Hence, the value of angle m is 20°
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The shapes below are mathematically similar.
х
8 cm
9 cm
12 cm
Calculate the length of side x.
Answers
the way you worded the question is confusing but i think you meant that there are two shapes both w 2 sides given
you do 12/8 which is 1.5
1.5 is the scale factor so you divide 9 by 1.5 because 9 is on the bigger shape you divide
Determine the intercepts of the line.
Answers
Answer:
Y-intercept: (0, 0.4)
X-intercepts: (0.3, 0)
Answer:
The y-intercept is (0, 0.4), and the x-intercept is (0.3, 0)
Step-by-step explanation:
To find the intercepts of the line, you need to see what points lie on the x and y-axis.