Answer:
a)9
b)3
c)22
Step-by-step explanation:
(only in 7th so could be wrong)
a
13+7·2
13+14
27
-----------
8-(3+2)
8-3-2
3
----------
27/3
9
------------------------------------------------------------------
b
9+3²
9+9
18
----------
2²+2
4+2
6
--------
18/6
3
-----------------------------------------------------------------------------------
c
(10+2)+(4²-6)
10+2+4²-6
12+16-6
12+10
22
Graph the image of N(3, -1) after a rotation 180° clockwise around the oriGin
Answer:
(-3, 1)
Step-by-step explanation:
180° rotation clockwise: (x,y) becomes (-x,-y)
Isaiah scores with 50% of his penalty kicks in soccer. He flips two fair coins to conduct a simulation with 20 trials to determine the likelihood that he will make his next two penalty kicks, as shown. Heads up (H) represents a goal. What is the probability that Isaiah will make both penalty kicks? Give the probability as a percent. Enter your answer in the box. TH HH TT HT TH HH HH TT HT TH TT HH HT HH HH TT HT HH TH TT P(two goals) = %
The probability that Isaiah will make both penalty kicks, as simulated by flipping two fair coins 20 times, is 25%.
Since Isaiah scores with a 50% success rate on penalty kicks, the probability of him scoring a goal on any given penalty kick is 0.5 or 50%.
If he flips two fair coins to simulate 20 trials, there are four possible outcomes: HH (two goals), HT (one goal and one miss), TH (one goal and one miss), and TT (two misses).
Out of the 20 trials, there are two possible ways for Isaiah to score both of his penalty kicks: HH and HH. The probability of getting HH on two coin flips is (0.5) x (0.5) = 0.25 or 25%.
Therefore, the probability that Isaiah will make both penalty kicks, as simulated by flipping two fair coins 20 times, is 25%.
Expressed as a percentage, this is:
P(two goals) = 25%
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When a constant force is applied to an object, the acceleration of the object varies inversely with its mass. When a certain constant force acts upon an object
with mass 4 kg, the acceleration of the object is 9 m/s². When the same force acts upon another object, its acceleration is 6 m/s². What is the mass of this
object?
Step-by-step explanation:
a = k/m or ma = k
using 4 and 9 4* 9 = k = 36
then the equation becomes:
ma = 36
using a = 6
6 * m = 36 shows m = 6 kg
What set has the largest mode? Just to inform you I took this once already and C is not the answer (I’ll give points + brainalist)
Answer:
D
Step-by-step explanation:
The mode of a set of numbers is the number that occurs the most.
For A, the mode is 3. For B, the modes are 4,5, and 6 . For C, the mode is 4. For D, the mode is 11.
The largest of these modes is 11, so the answer is D
By drawing a diagram, determine the distance travelled south and the distance travelled
east by a plane flying on a bearing of 140 degrees for 90km
Sure, here is a diagram of a plane flying on a bearing of 140 degrees for 90km:
[Image of a plane flying on a bearing of 140 degrees for 90km]
The distance traveled south is 60km and the distance traveled east is 53.5km.
To calculate the distance traveled south, we can use the following formula:
distance = (90km * sin(140 degrees)) / 180 degrees
Use code with caution. Learn more
This gives us a distance of 60km.
To calculate the distance traveled east, we can use the following formula:
distance = (90km * cos(140 degrees)) / 180 degrees
Use code with caution. Learn more
This gives us a distance of 53.5km.
What is the value of the expression
Answer:
C. 9
Step-by-step explanation:
K(3)=3*3=9........................
After drawing a square on the board, Mr. Hinkle asked his class to identify the shape. Timothy stated that Mr. Hinkle had drawn a rhombus. Which of the following statements is true?
what answer? here, can you answer that? thankyou
It should be noted that the number of sample size based on the information will be 300.
How to explain the sampleIn order to calculate the sample size, we can use the following formula:
n = z² * p * (1-p) / E²
n = 1.96² * 0.5 * (1-0.5) / 0.05²
= 300
A questionnaire is a method of gathering data that makes use of written questions to be answered by the respondents. It is a popular method of data collection because it is relatively easy to administer and can be used to collect a wide variety of information.
In the first column, the population is the entire National Capital Region (NCR). The sample is the city of Manila. In the second column, the population is all STEM students. The sample is all academic track students. In the third column, the population is all the tablespoons of sugar in the jar. The sample is one tablespoon of sugar. In the fourth column, the population is all the vowels in the word "juice". The sample is the vowel "i".
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4 cards are drawn from a standard deck find the probability that all the cards are hearts
Answer:
Step-by-step explanation:
13 Choose 4 / (52 * 51 * 50 * 49)
The order you choose the hearts does not matter. The total number of ways of choosing 4 hearts in any order is
13!/(4!9!) / (52!/48!)
13*12*11* 10
========= = 715
24
52 * 51* 50 * 49 = 6497400 This is the number of ways you can draw 4 cards in no order.
P(4 H) = 715 / 6497400
P(4H) = 0.00011
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
99000 millimeters kdknwjdhdiqkwpshd
An airplane is 12,000 ft above sea level, and there's a submarine that is 2,000 ft below sea level. What is the distance between the airplane and submarine?
Answer:
14,000 feet
Step-by-step explanation:
hope this helps :)
Write as a percent: 0.564
0.564%
5.64%
56.4%
564%
Answer:
(56.4) (564) (0.564) ?
Step-by-step explanation:
brainliest plz
Determine the validity of the converse and give a counterexample if the converse is not valid.
If it is sunny, then it is 80° Fahrenheit. The converse is valid.
If it is 80° Fahrenheit, then it is sunny. The converse is valid.
If it is not sunny, then it is not 80° Fahrenheit. The converse is invalid; a counterexample is a day that is not 80° Fahrenheit and not sunny.
If it is 80° Fahrenheit, then it is sunny; The converse is invalid; a counterexample is a day that is 80° and cloudy.
Your analysis is correct. Here's a summary:
If it is sunny, then it is 80° Fahrenheit. (Original statement)
Converse: If it is 80° Fahrenheit, then it is sunny. (Valid)
If it is 80° Fahrenheit, then it is sunny. (Original statement)
Converse: If it is sunny, then it is 80° Fahrenheit. (Valid)
If it is not sunny, then it is not 80° Fahrenheit. (Original statement)
Converse: If it is not 80° Fahrenheit, then it is not sunny. (Invalid)
Counterexample: A day that is not 80° Fahrenheit and not sunny (e.g., 70° and cloudy).
If it is 80° Fahrenheit, then it is sunny. (Original statement)
Converse: If it is sunny, then it is 80° Fahrenheit. (Invalid)
Counterexample: A day that is 80° Fahrenheit and cloudy.
In cases 1 and 2, the original statements and their converses are valid because the relationship between "sunny" and "80° Fahrenheit" holds in both directions. However, in cases 3 and 4, the converses are invalid because there are counterexamples where the second part of the statement (either "not 80° Fahrenheit" or "cloudy") does not necessarily imply the first part ("not sunny" or "80° Fahrenheit").
What transformation is represented by the function f(x)=2sin(x−π/2)
up 2
down 2
left π/2
right π/2
down π/2
Answer:
right π/2
Step-by-step explanation:
The function f(x) = 2sin(x - π/2) is a sine function with a period of 2π, an amplitude of 2, and a phase shift of π/2. The phase shift of π/2 causes the graph of the function to be shifted π/2 units to the right. .
Therefore, the correct answer is right π/2
If f(x)=x^(2 )+4 then verify (fof^(-1))(x)=(f^(-1) of)(x)=x. (Consider the positive values only)
Answer:
Step-by-step explanation:
If f(x)=x²+4 then (fof⁻¹)(x)=(f⁻¹of)(x)=x is proved
What is a function?A relation is a function if it has only One y-value for each x-value.
Composite functions are when the output of one function is used as the input of another.
If f(x)=x²+4
Then we have to prove f⁻¹of(x)=f⁻¹(f(x)
Let us consider fof⁻¹(x)
f(f⁻¹(x))
x
So (fof⁻¹(x))=x
Now f⁻¹of(x)=f⁻¹(f(x)
=x
Hence, If f(x)=x²+4 then (fof⁻¹)(x)=(f⁻¹of)(x)=x is proved
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A baker has 4 3/4 pounds of cookie dough. He uses 1/16 pound of dough for each cookie. How many cookies can he make? Simplify the answer.
This shows that 76 cookies will be made with the total pounds of cookies
Ratio and proportionFractions are written as a ratio of two integers. Given the following parameters
Total pounds of cookies made = 4 3/4 pounds
Total pounds of cookies made = 19/4 pounds
If he uses 1/16 pound of dough for each cookie, the total amount of cookies made is given;
Number of cookies = 19/4 ÷ 1/16
Number of cookies = 19/4 * 16/1
Number of cookies = 19 * 4
Number of cookies = 76
This shows that 76 cookies will be made with the total pounds of cookies
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A sine function has the following key features:
Period =12
Amplitude=4
Midline:y=1
y-intercept: (0, 1)
The function is not a reflection of its parent function over the x-axis.
Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the grapn closest to the first point.
Please show me on a graph how to do this.
Compared with the parent function y= sin(x), the graph of 4 sin[ (π/6)x ] + 1 will be stretched vertically by a scale factor of 4, translated 1 unit up, and with a shorter distance between the peaks.
What is a function?
Each element of X receives exactly one element of Y when a function from one set to the other is used. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between varied quantities and other variables.
Here, we have
1) The parent function is sin(x)
2) sin(x) has:
Middle line: y = 0
Amplitude: 1 because the function goes from 1 unit up to 1 unit down the middle line.
Period: 2π because the sine function repeats every 2π unit.
y-intercept: (0,0) because sin(0) = 0.
Now look at how these changes in the function reflect on the parameters:
A sin (ωx + B) + C:
That function will have:
amplitude A, because the amplitude is scaled by that factor
Period: 2π / ω, because the function is compressed horizontally by that factor.
It will be translated B units to the left
It will be translated C units up.
And you need
Period = 12 => 2π / ω = 12 => ω = π/6
A = 4
Translate the midline from y = 0 to y = 1 => shift the function 1 unit up => C = 1.
Translate the y-intercept from y = 0 to y = 1, which is already accomplished when you translate the function 1 unit up.
So, this is the function searched
y = A sin (ωx + B) + C = 4 sin[ (π/6)x ] + 1
Now you can check the amplitude, the period, the middle line, and the y-intercept of that y = 4 sin[ (π/6)x ] + 1.
Hence, compared with the parent function y= sin(x), the graph of 4 sin[ (π/6)x ] + 1 will be stretched vertically by a scale factor of 4, translated 1 unit up, and with a shorter distance between the peaks.
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Adam had1/3 of a pizza
Answer:
yeah anything else...
Step-by-step explanation:
ما (1) When we add two fractions, do we need common denominator? Why or why not? Explain your answer by an example.
Answer:
Yes you need a common denominator because, We need the pieces of each fraction to be the same size to combine them together. ... These two fractions have the same denominator, so the equal parts that the whole has been split into are the same size.
Step-by-step explanation:
how many ways can i choose 5 goldfish from 28
Answer:
5 3/5 or 5
Step-by-step explanation:
Because it is
Determina el valor absoluto de 13 – 11|
Responder:
2
Explicación paso a paso:
El valor absoluto de una expresión es el también conocido como valor positivo devuelto por la expresión. Una expresión en un signo de módulo se conoce como valor absoluto de la expresión y dicha expresión siempre toma dos valores (tanto el valor positivo como el negativo).
Por ejemplo, el valor absoluto de x se escribe como | x | y esto puede devolver tanto + x como -x debido al signo del módulo.
Pasando a la pregunta, debemos determinar el valor absoluto de | 13-11 |. Esto significa que debemos determinar el valor positivo de la expresión como se muestra;
= | 13-11 |
= | 2 |
Este módulo de 2 puede devolver tanto +2 como -2, pero el valor absoluto solo devolverá el valor positivo, es decir, 2.
Por tanto, el valor absoluto de la expresión es 2
what is the length of an arc which substends an angle of 60digree at the center of a circle of radius 1/2m?
0.5236 meters is the length of the given arc.
The formula for the length of an arc is given by:
Arc Length = (θ/360) * 2πr
Where:
θ is the central angle in degrees.r is the radius of the circle.In this case, the central angle is 60 degrees and the radius is 1/2 meters.
Plugging the values into the formula, we have:
Arc Length = (60/360) * 2π(1/2)
Arc Length = (1/6) * π
Arc Length = π/6
Therefore, the length of the arc that subtends an angle of 60 degrees at the center of a circle with a radius of 1/2 meters is π/6 meters or approximately 0.5236 meters.
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Juanita recorded a temperature of -4 degrees Fahrenheit at 8:00 am. An hour later, the temperature increased by 4 degrees. Write a number sentence to represent this
Answer:
0 degrees
Step-by-step explanation:
-4° (original degree) + 4° (what it increased by) = 0°
What are the consecutive numbers that follow the number 686
Answer:
687, 688, 689, 690, ...
Step-by-step explanation:
Each in a list of consecutive integers is 1 more than the previous number. Consecutive integers following 686 are ...
687, 688, 689, 690, ...
Write this ratio as a fraction in simplest form without any units 40 days to 5 weeks
Answer:
1:8 1/8
Step-by-step explanation:
40 ÷ 5 = 8
So 1:8 1/8
Solve the following system of equations and show all work.
y=-x^2 + 4
y=2x+1
Answer:
Step-by-step explanation:
y = -x²+4 and y = 2x+1
Therefore, -x²+4 = 2x+1
x²+2x-3 = 0
x = 1,-3
There are two solutions:
(1,3) and (-3,-5)
The solutions to the system of equations are (x, y) = (-3, -5) and (1, 3).
We have,
To solve the system of equations:
Set the expressions for y equal to each other:
-x² + 4 = 2x + 1
Rearrange the equation to bring all terms to one side:
-x² - 2x + 3 = 0
Solve the quadratic equation by factoring, completing the square, or using the quadratic formula. In this case, we will use factoring.
Factor the quadratic equation:
(-x - 3)(x - 1) = 0
Set each factor equal to zero and solve for x:
-x - 3 = 0 or x - 1 = 0
Solve the first equation:
-x = 3
x = -3
Solve the second equation:
x = 1
Substitute the values of x back into one of the original equations to find the corresponding values of y.
For x = -3:
y = 2(-3) + 1
y = -6 + 1
y = -5
For x = 1:
y = 2(1) + 1
y = 2 + 1
y = 3
Therefore,
The solutions to the system of equations are (x, y) = (-3, -5) and (1, 3).
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Solve | 2x - 6 | = |x| by graphing
Answer:
X=2 & X=6
Step-by-step explanation:
If you graph the equation (I recommend using desmos) you can see that X equals 2 & 6.
Part B
The mass of the Earth is 6 × 10²⁴ kg. The mass of the sun is 2 × 10³⁰ kg. How many earths would equal the mass of the sun? Use words and mathematics to justify your answer.
Answer:
The mass of the sun is about 333,000 times larger than the mass of the Earth. To find this, we can divide the mass of the sun by the mass of the Earth:
$\frac{2 × 10³⁰ kg}{6 × 10²⁴ kg} = \frac{200,000,000,000,000,000}{6,000,000,000,000} = 333,333.\overline{3}$
Since the mass of the sun is about 333,333 times larger than the mass of the Earth, we can say that it would take about 333,333 Earths to equal the mass of the sun.
Given h(x) = 5x + 3. what is the value of h(-11)
Answer:
h(-11)=-52
Step-by-step explanation:
Answer:
h(x)=52
Step-by-step explanation:
so x= -11 now plug in for x and solve
5(-11)+3
-55+3= -52
will mark brainliest help please