The ratio of the area of sector abc to the area of sector dbe is 4:3
Area of a sectorThe formula for calculating the area of a sector is expressed as:
A = r²Ф
where:
r is the radiusФ is the subtended angleFor the sector ABC
A1 = (2r)²β
A1 = 4r²β
For the sector DBE
A2 = (r)²3β
A2 = 3r²β
Take the ratios
Ratio= A1/A2
Ratio = 4r²β/3r²β
Ratio = 4/3
Hence the ratio of the area of sector abc to the area of sector dbe is 4:3
Learn more on area of sector here; https://brainly.com/question/22972014
#SPJ4
Which expression has a value of 20? 9 + 21 ÷ (3 + 2 × 5) (9 + 21) ÷ 3 + 2 × 5 9 + (21 ÷ 3 + 2) × 5 9 + 21 ÷ (3 + 2) × 5
Answer:
i don't now the answer so can you be more specific so i can help you
Step-by-step explanation:
Maybe this helps :}}}}}
Type the correct answer, PLS HELP ASAP, I AM GIVING BRAINLIEST FOR THE CORRECT ANSWER!!!!
Answer:
x = 3
Step-by-step explanation:
3^3 = 4(3) + 15 = 27
if one angle of a triangle is 63 and the other two are 7x degrees and 6x degrees what is X worth
Answer:
x = 9
Step-by-step explanation:
Sum of all angles of a triangle = 180
63 + 7x + 6x = 180
63 + 13x =180
13x = 180 - 63
13x = 117
x = 117/13
x = 9
Answer:
X= 9
Step-by-step explanation:
The angles in a triangle all add up to 180°
Hence we can form this equation :
63 + 7x + 6x = 180°
Subtracting 63 from both sides:
7x + 6x = 117°
Adding together to find the total X:
13x = 117°
Finally, diving by 13 on both sides:
X = 9
Evan also has a bag of apples that weighs 3.545 lb is the value of the 5 digit in the tenths place of 3.545 is how many times the value of the digit in the five in the thousands place
Answer:
Yes, it is in the tenth place, and it is 5 thousand is 10,000 times more than the 5 in the tenth place
Step-by-step explanation:
3 = ones place
.5 = tenths place
.04 = hundredths place
.005 = thousandth place
for the second question all you need to do it
5000 divided by .5 = 10000 (because they both have 5, don't try this if there are :example: 4 in the hundreds place to 3 in the one's place).
Answer:
The value of the 5 in the tenths place of 3.545 is 10 times the value of the 5 in the thousandths place
Step-by-step explanation:
i did the end of the year test for k12. good luck on your grade and i hope that this is right!
What is the radius of a sphere with a volume of 32398cm3 cm
to the nearest tenth of a centimeter?
Answer:
The answer is 19.8cm to the nearest tenth
I need help with this question asap please
Someone help please answer question 1
Answer:
Reflection in line x=1
Step-by-step explanation:
If you draw a line of all values where X = 1. It forms a line between the 2 shapes and by reflecting in that line, you will get Shape B from shape A
PLEASE HELP ME FIGURE OUT THE QUALITY SIGN THAT GOES WITH THESE THREE PROBLEMS
Answer:
"=" and "<"
Step-by-step explanation:
|9| = |-9|
|9| and |-9| indicates the absolute value of 9 so we use equality sign
7.5 = 7.50
7.5 is equal to 7.50 adding zeros to the right side of an expression won't change its quantity
For example:
I say I have 7.5 dollars and my friend says he has 7 dollars and 50 cent
We have same amount of money.
-3.31 is smaller than -3.13 because it's further from point zero in number line so we use < for this expressions.
Mr. Emmer gave a test in his Chemistry class. The scores were normally distributed with a mean of 82 and a standard deviation of 4. A student is randomly chosen. What is the probability that the student scores a 70 or below? Use the formula for a z-score z = x - mu/infinity where x is the given value, mu is the mean and infinity is the standard deviation. Then refer to the chart on page 11 of the lesson to find the probability. a. .0668.b. .0179.c. .0013.d. .5000.
The probability that the student scores a 70 or below is 0.0013
How to determine the probability?The given parameters are:
Mean, μ = 82Standard deviation, σ = 4The probability that a student scores 70 or below is represented as:
P(x ≤ 70)
Calculate the z score for x = 70 using:
[tex]z =\frac{x - \mu}{\sigma}[/tex]
This gives
[tex]z =\frac{70 - 82}{4}[/tex]
Evaluate
z =-3
The probability becomes
P(x ≤ 70) = P(z ≤ -3)
Using the z tables of probabilities, we have:
P(x ≤ 70) = 0.0013499
Approximate
P(x ≤ 70) = 0.0013
Hence, the probability that the student scores a 70 or below is 0.0013
Read more about probability at:
https://brainly.com/question/251701
#SPJ4
What is the volume of the following rectangular prism and the top of the shape 9 units squared and the hight is 3 2/3
Answer:
2x^3 + 5x^2 - 18x - 45 m
V = lwh
V = (x + 3)(x - 3)(2x + 5)
V = ((x)(x) + (x)(-3) + (3)(x) + (3)(-3))(2x + 5)
V = (x^2 - 3x + 3x - 9)(2x + 5)
V = (x^2 - 9)(2x + 5)
V = (x^2)(2x) + (x^2)(5) + (-9)(2x) + (-9)(5)
V = 2x^3 + 5x^2 - 18x - 45
What is the volume of the following rectangular prism????????
A rectangular pyramid has a volume of 492 cubic yards. if the base has a length of 18 yards and a width of 4 yards, what is the height of the pyramid?
Answer:
h = 20.5 yards
Step-by-step explanation:
Volume of Rectangular Pyramid: lwh/3
492 = (18) * (4) (h) /3
Multiply 3 on both sides
1476 = (18) (4) (h)
1476 = 72h
Flip the equation.
72h = 1476
h = 41/2 or 20.5 yards
please help me to answer
Answer:
7.92 cm²
Step-by-step explanation:
Area of Trapezium :
1/2 x (a + b) x h1/2 x (4.8 + 8.4) x 1.20.6 x 13.27.92 cm²How many pencils did kyle purchase?
Answer:
he purchased 12 pencils
Step-by-step explanation:
1.24x12=14.88
14.88-20= 5.12
also this kid i knew has the same pfp
What is the volume?
Bernice made a rectangle wooden toolbox that has a base of 50 square cm and a height of 15 cm.
Answer:
750 cm^3
Step-by-step explanation:
VOLUME = base * height = 50 cm^2 x 15 cm = 750 cm^3
Question 7 (1 point)
Using the Cylinder in the picture, find the Lateral Area, the Area of a Single Base, and the TOTAL Surface Area: (round to the nearest
hundredth)
7 cm
10 cm-
Lateral Area =
Single Base Area =
Surface Area =
Blank 1:
cm²
_cm²
cm²
Answer:
The lateral area is 439.82 I don't know the single base one and The surface area is 747.7
Step-by-step explanation:
Write an exponential function. In your own words, describe the rate of change of this function and what the graph looks like.
ACTUALLY WRITE A FUNCTION PLEASE! I don't care about an explanation.
An exponential function follows the form a^x, where a is a constant. Other answers incorrectly say it depend on the exponent but that is no true because this is a constant raised to x NOT x raised to a number.
You ask for rate of change in other words derivative
You may recall that the derivative of a^x is a^x*ln(a).
Answer:
y = a × b^x
b > 1
2 × 2 × 2 × 2
Assume all values are greater than 1
This function is a representation of exponential growth.
If b is less than 1, the function is exponential decay.If b is greater than 1, the function will be exponential growth.How do I factor this polynomial?
(30x^3 + 15x^2 + 45x)
Answer:
Step-by-step explanation:
Answer: [tex]15x(2x^2+x+3)[/tex]
Step-by-step explanation:
[tex](30x^3 + 15x^2 + 45x)[/tex]
1. factor out 15x
[tex]15x(2x^2+x+3)[/tex]
If the volume of this rectangular prism is 385 cubic inches, what is the value of x?
(x - 2) in.
xin.
W + 4) in
X
inches
Answer:
x=7
Step-by-step explanation:
x(x-2) (x+4) =385
distribute the x and solve
The value of x is 8 in.
What is a prism?A prism is a three-dimensional object.
There are triangular prism and rectangular prism.
We have,
Length = x + 4
Width = x
Height = x - 2
The volume of the rectangular prism = 385 in³
The volume of the rectangular prism = length x width x height
Now,
length x width x height = 385
(x + 4) x (x - 2) = 385
(x + 4) (x² - 2x) = 385
x³ - 2x² + 4x² - 8x = 385
x³ + 2x² - 8x = 385
This is a cubic polynomial.
f(x) = x³ + 2x² - 8x - 385
f(x) = a³ + bx² + cx + d = 0
Using the calculator we get,
Roots:
x = -3.20181 + 5.96339 i (rejected)
x = -3.20181 - 5.96339 i (rejected)
x = 8.40362 = 8
Thus,
The value of x is 8 in.
Learn more about prism here:
https://brainly.com/question/12649592
#SPJ2
A scientist collected two sample sets of snowfall data. Which statistic should he use to compare the spread of the two sets of data?
The standard deviation statistic should use to measure the spread of the two sets of data.
What is the standard deviation?
It is defined as the measure of data disbursement, It gives an idea about how much is the data spread out.
As we know, the shape of a normal curve is dictated by its mean and standard deviation, hence standard deviations are important.
Thus, the standard deviation statistic should use to measure the spread of the two sets of data of snowfall which is collected by the scientist.
Learn more about the standard deviation here:
brainly.com/question/12402189
#SPJ1
PLEASE HELP its A Math Problem ! Is the following equation linear, quadratic, exponential or none of these? f(x)=3^x+2
None of these
Linear
Exponential
Quadratic
Answer:
Exponential
Step-by-step explanation:
As the equation involves raising a term to variable power, this equation can be considered exponentialLinear
Ex : x + 2, x + 3, 3x + 4Quadratic
Ex : (x + 4)², 5x² + 7x + 3, 3x² + 2Answer:
(c) Exponential
Step-by-step explanation:
The independent variable in the equation is in the exponent, so this is an exponential equation.
__
Additional comment
Linear and quadratic equations are specific cases of polynomial equations, which involve sums of powers of the variables. The highest power involved is the degree of the equation: 1 for linear, 2 for quadratic.
f(x) = x +2 . . . . has x to degree 1, so is a linear equation
f(x) = 3x^2 -5 . . . . has x to degree 2, so is a quadratic equation
f(x) = √(x -6) . . . . is "none of these"
(This is another vocabulary question. Linear, quadratic, exponential, degree, term, polynomial, ... are all words with specific definitions related to algebraic functions.)
39 ft.². The length should be 10 feet more than its width. What should the dimensions of
the deck be?
Answer:
13 x 3 ft
Step-by-step explanation:
RECTANGULAR deck
L x W = 39 ft^2
(w+10) x w = 39
w^2 + 10w - 39 = 0
(w-3)(w+13) = 0 w = 3 or -13 (throw out)
w = 3 then l = 10 +3 = 13
Mia is traveling in a car at a speed of 52.8 miles per hour. How many miles will she cover in 2 hours?
Answer:
52.8*2=105.6
Step-by-step explanation:
52 I'm per hour means in two hour she travels double times that is 105.6 miles per hour
The area of rectangle is 60inc * h ^ 2 If its breadth is 5 inch, find the length of breadth in ft.
Hey ! there
Answer:
Length of breadth in ft is 0.416 ft .Step-by-step explanation:
In this question we are given area of rectangle that is 60 inches square and its breadth is 5 inch . We are asked to find the length of breadth in ft .
SOLUTION : -
For changing " in " into " ft " we need to divide the given inch value by 12. So Dividing 5 inches by 12 :
[tex] \quad \dashrightarrow \qquad \: \dfrac{5}{12} [/tex]
We get :
[tex]\quad \dashrightarrow \qquad \: \purple{\underline{\boxed{\frak{0.416 \: ft}}}} \quad \bigstar[/tex]
Henceforth , length of breadth in ft is ❝ 0.416 ft ❞ .#Keep Learningplease awnser quickly
Answer:
R' (- 1, 6 )
Step-by-step explanation:
under a reflection in the x- axis
a point (x, y ) → (x, - y ) , then
R (- 1, - 6 ) → R' (- 1, 6 )
Answer:
the answer should be (-1, -6) because remember when you are doing these kind of problems of pluging in the points in a coordinate plane remember the quadraunts to help you know everything you need in case of future problems.
So back remember first is x and then y so when we analyze the point the x is -1 and the y is -6 so the point r represnts= (-1,-6)
so hopefully that is the correct answer and have a great day.
remember first is x and then y
Step-by-step explanation:
Solve for x. Round your answer to the nearest tenth if necessary.
Answer:
15.9
Step-by-step explanation:
x^2 + 6^2 = 17^2
x squared + 36 = 289
-36 -36
x squared = 253
[tex]\sqrt{x}[/tex] = [tex]\sqrt{x}[/tex]253
x = 15.9
Answer:
18.0
Step-by-step explanation:
17^2+6^2= 289 + 36=325
The square root of 325 is 18.02 and when you round 18.02 to the nearest tenth it would give you an answer of 18.0.
PLEASE ANSWER 50 POINTS+ BRAINLIEST
Discussion Topic
What do you know about statistics and data? What do you think a measure of center for a data set would be? What do you think a measure of variation for a data set would be?
Write an example of a situation for which you would like to analyze the statistics. Think of the types of graphs you are familiar with. Do you think the data from the situation you came up with would look good on one of the graphs?
data are individual pieces of factual information recorded and used for the purpose of analysis
What do you think a measure of center for a data set would be?Median and IQR
What do you think a measure of variation for a data set would be?The most common measures of variability are the range, the interquartile range (IQR), variance, and standard deviation.
Write an example of a situation for which you would like to analyze the statistics. Think of the types of graphs you are familiar with. Do you think the data from the situation you came up with would look good on one of the graphs?.A cylindrical tank full of water has a
diameter of 10 feet and a height of 14 feet.
If 250 cubic feet is drained from the tank,
how much water remains?
Answer:
849
Step-by-step explanation:
A family of 2 adults and 3 children went out to dinner. The total bill was $42. Each child's dinner cost $4. How much did each adult's dinner cost?
Answer: Each adult’s meal costed $15
Step-by-step explanation:
This situation can be modeled by the following equation:
2a + 3c = 42, where a = the cost of an adult’s meal, and c = the cost of a child’s meal
Since we know from the problem that a child’s meal costs $4, we know c:
2a + 3(4) = 42
At this point, we can just solve the resulting equation for a:
2a + 3(4) = 42
= 2a + 12 = 42 (simplify 3(4))
= 2a = 30 (subtract 12 from both sides)
= a = 15 (divide both sides by 2)
So, the cost of each adult’s meal was $15.
The graph of a sinusoidal function intersects its midline at (0, -3) and then has a maximum point at
(2,-1.5).
Write the formula of the function, where x is entered in radians
The formula of the function when the graph is analyzed will be y =1.5sin[(pi/4)x] - 3.
How to explain the function?From the graph, the mid line is y = -3 and the amplitude will be:
= -1.5 - (-3)
= 1.5
From the mean line to the max is ¼ of a cycle. Therefore, the period will be:
= 4 × 2 = 8
Number of cycles in 2pi will be:
= 2pi/8
= pi/4
Hence, the formula of the function will be y= 1.5sin[(pi/4)x] - 3.
Learn more about functions on:
https://brainly.com/question/25638609
#SPJ1
Answer:
f(x)=1.5sin (pie/4 x)-3
Step-by-step explanation:
Kahn academy aproved