Use Pascal’s Triangle to determine the fifth term of the expansion of (x + 3)7
Answer:
2835x^5.
Step-by-step explanation:
By Binomial Theorem, T(r+1) = nCr * a^(r+1) * b^r.
Term 5 = 7C4 * x^5 * 3^4
= 35 * x^5 * 3^4
= 2835x^5.
4x-6y when x =3 and y =-2
Answer:
24
Step-by-step explanation:
4x-6y
substitute:
4x3 - 6x (-2) = 12+12 = 24
Hope this helps
It’s urgent help me I have maths today plz help me!!
Answer:
Step-by-step explanation:
Vertices of the given triangle ABC are A(-1, 4), B(-1, 1) and C(-3, 1)
Equation of the mirror line → y = x
Rule to reflect these vertices over the mirror line y = x,
(x, y) → (y, x)
Therefore, image points of the vertices will be,
A(-1, 4) → A'(4, -1)
B(-1, 1) → B'(1, -1)
C(-3, 1) → C'(1, -3)
Now we can plot these image points to get the image triangle A'B'C'.
You can define the rules for irrational exponents so that they have the same properties as rational exponents. Use those properties to simplify each expression. 9¹/√₂
The simplified form of 9^(1/√2) is 3.
By defining the rules for irrational exponents, we can extend the properties of rational exponents to handle expressions with irrational exponents. Let's simplify the expression 9^(1/√2) using these rules.
To simplify the expression, we can rewrite 9 as \(3^2\):
\(3^2\)^(1/√2)
Now, we can apply the rule for exponentiation of exponents, which states that a^(b^c) is equivalent to (a^b)^c:
(3^(2/√2))^1
Next, we can use the rule for rational exponents, where a^(p/q) is equivalent to the qth root of \(a^p\):
√(3^2)^1
Simplifying further, we have:
√3^2
Finally, we can evaluate the square root of \(3^2\):
√9 = 3
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Mrs. Dudley is organizing a breakfast party for her office of 240 employees. She wants to
buy enough donuts so that everyone can have 2. If donuts come in boxes of 12, how many
boxes does she need to buy?
Answer:
40 boxes
Step-by-step explanation:
Total donuts needed = number of employers x 2 = 240 x 2 = 480
Number of boxes = total number of donuts needed ÷ 12 = 480 ÷ 12 = 40
 Find the length of the third side. If necessary, write in simplest radical form.
IMAGE DOWN BELOW!
SOMEONE PLEASE HELP ME!! ILL GIVE YOU BRAINLIST ANSWER
Answer:
third side: 2√14
using pythagoras theorem:
a² + b² = c²
t² + 5² = 9²t² + 25 = 81t² = 81 - 25t² = 56t = √56t = 2√14Answer:
The unknown side of this triangle is √56 or 2√14
Step-by-step explanation:
Let the unknown side of this right angled triangle be x , so by using Pythagoras theorem we can find out the third side .
=> P² + B² = H²
=> P² = H² - B²
=> P² = 9² - 5²
=> P² = 81 - 25
=> P² = 56
=> P = √56 or 2√14
plz help i relly need help with this
Answer:
B
Step-by-step explanation:
5(4)-2(1)=
20-2=
18
Answer:
B
Step-by-step explanation:
Explain why a drop in temperature would lead to adding a negative integer.
Step-by-step explanation:
a drop in temperature means the temperature will decrease.
That decrease is represented with a negative integer which should be added to the previous temperature.
Pls help I’m in class and I need it done by today
Answer:
x=6/11
x≈0.545
Step-by-step explanation:
They are corresponding angles, so their measurements are congruent to each other. Therefore, you can set them equal to each other and solve for x:
19x+6=30x
6=11x
6/11=x
x=6/11
x≈0.545
7. A study was done to determine the relationship between a person's screen time and their age.
A group of participants was asked to record their average daily screen time, in minutes, and
their age. The line of best fit for the data had the equation y=-3.2x + 273.4, where x was
the person's age and y was their screen time in minutes. Which of the following is the correct
interpretation based on this model?
For every year a person gets older, their screen time increases by 273.4 minutes.
(2) For every 3.2 years a person gets older, their screen time decreases by one minute.
(3) For every 3.2 years a person gets older, their screen time increases by 273.4 minutes.
(4) For every year a person gets older, their screen time decreases by, 3.2 minutes.
x=age
SC mins= -3.2 laget 273.
The true statement about the equation of the line of best fit (d) For every year a person gets older, their screen time decreases by 3.2 minutes
How to interpret the line of best fit?The equation of the line of best fit is given as:
y = -3.2x + 274.4
Where:
x represents the persons agey represents the average daily screen timeA linear equation is represented as:
y = mx + b
Where:
m represents the slopeb represents the y-interceptBy comparison, we have:
m = -3.2 and b = 274.4
This means that:
For every year a person gets older, the average screen time decreases by 3.2 minutes
Hence, the true statement is (d)
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2.1 repeating as a mixed number?
Answer:
2 1/10
Step-by-step explanation:
"Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there is 1 number to the right of the decimal point, place the decimal number over \(10^{1}\)1 (10). Next, add the whole number to the left of the decimal.
\(2\frac{1}{10}\)"
quote desmos
In a basketball game, Alana scores twice as many points as Taylor. Taylor scores four points fewer than Nancy, and Nancy scores three
times as many points as Molly. If Molly scores 6 points, how many points did Alana score?
Determine your answer by first determining how many points each other player scored:
1. Nancy scores
2. Taylor sco res
3. Alana scores
points.
points.
points.
how do I solve (350^9/350^5)?
Answer:
350^4.
Step-by-step explanation:
When dividing the same base by different exponents, subtract the exponents.
What is the value of x to the nearest tenth? The figure is not drawn to scale.
A. x=35.6
B. x=10.5
C. x=4.9
D. x=1.5
The value of x corresponds to option B: 10.5 as the figure provided has two congruent figures inside it.
From the given image, we can consider that that the two triangles- one for which side x is given, and another for which measurements of both sides are given- are congruent. This is because they both have one common side and one angle equal to another at a vertex (refer image).
Thus, we have:
(x / 19.3) = (3.9 / 7.2)
Then, attempting to find the value of x we have:
x = (3.9 / 7.2) × (19.3)
= 10.5
Therefore, option B gives the measure of the side x of the given triangle, where x = 10.5.
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Find value of X please
Answer:
x=7
Step-by-step explanation:
Step #1- Set the two lines equal to each other
10+12=x+15
Step #2- Solve for the line you have all values for
10+12=22
Step#3- Plug 22 back into the equation where the two lines are set equal to each other
22=x+15
Step #4- Solve for X algebraically
22=x+15
22-15=x
7=x
Solve for g I need help please and thank:)
Answer:
g = E/2h
Step-by-step explanation:
E = 2gh
g = E/2h
The mean mass of five men is 76 kg. The masses of four of the men are 72 kg, 74 kg, 75 kg and 81 kg. What is the mass of the fifth man
Answer:
78kg
Step-by-step explanation:
76×5= 380kg
380-72-74-75-81= 78kg
Point Q′ is the image of Q(5, –3) after a translation down 2 units and right 4 units. What are the coordinates of Q′?
Answer:
9,-5
Step-by-step explanation:
imagine the coordinate on a graph
if it helps draw a graph
Justin did push-ups for the past 555 days.The following data points are the number of push-ups he did each day.
21,24,24,27,29
Find the standard deviation of the data set.
Round your answer to the nearest hundredth.
push-ups
Answer: σ: 2.76
Step-by-step explanation:
Count, N: 5
Sum, Σx: 125
Mean, μ: 25
Variance, σ2: 7.6
Steps
look at attached pic for formula
σ^2 = \(\frac{Σ(xi - μ)^{2} }{N}\)
\(\frac{(21 - 25)2 + ... + (29 - 25)2}{5}\)
⇒ \(\frac{38}{5}\)
⇒ 7.6
σ = \(\sqrt{7.6}\)
⇒ 2.756809750418
⇒ or 2.76
Determine whether each ordered pair is a solution or not a solution to this system of inequalities.
y< −x
2x+y>2
The ordered pair that is the solution of the given system of inequalities is (2, -2)
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given is a system of inequalities, y < -x and 2x+y > 2, we need to determine solution set of the given system of inequalities,
The inequalities are,
y < -x....(i)
2x+y > 2
y < 2-2x...(ii)
To find the ordered pair, put y = -x in equation Eq(ii) and replace < by =
-x = 2 - 2x
x = 2
y = -2
Therefore, the ordered pair, is (2, -2) {look at the graph attached}
Hence, the ordered pair that is the solution of the given system of inequalities is (2, -2)
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The trip from Carville to Planesborough takes 4 hours when traveling at a constant speed of 70 miles per hour. 2 1 How long, in hours, does the trip take when traveling at a constant speed of 60 miles per hour?
Answer:
2.5 mph
Step-by-step explanation:
70 miles per hour :4 hours
35 miles per hour:8 hours
1 mile per hour:16 hours
60 miler per hour
do 16/6
2.5 hours
A grasshopper chirp 25 times in 15 seconds. How many times were a grasshopper chirp in two hours
Answer:
2 hours = 7200 seconds
7200/15 = 480
25x480 = 12000 chirps in 2 hours
Step-by-step explanation:
Answer:
200
Step-by-step explanation:
info we are given :
25 chirps per 15 second.
1 hour: 60 minutes since we are trying to find out 2 hours it will be 60+60=120
now divide by 15 and times by 8 (8 x 25)
hi plz help me with this geometry question
Answer:
Approximately 54°
Step-by-step explanation:
So we know Angle A, the side opposite to Angle A, and the side opposite to Angle B (the angle we want to find). Given these circumstances, we can use the Law of Sines.
The Law of Sines states that:
\(\frac{\sin(A)}{a} =\frac{\sin(B)}{b} =\frac{\sin(C)}{c}\)
The variables do not really matter. Instead, it's more important that the angle corresponding to the side lines up with each other.
Anyways, since we know Side A, Angle A, and Side B, let's use the first and second ratios:
\(\frac{\sin(A)}{a} =\frac{\sin(B)}{b}\)
Plug in 80° for A, 11 for a, and 9 for b:
\(\frac{\sin(80)}{11} =\frac{\sin(B)}{9}\)
Cross multiply to solve for B:
\(9\sin(80)=11\sin(B)\)
Divide both sides by 11:
\(\sin(B)=\frac{9\sin(80)}{11}\)
Use the inverse sine function. And finally, use a calculator to solve:
\(\angle B =\sin^{-1}(\frac{9\sin(80)}{11} )\\\angle B\approx53.6829\textdegree\approx54\textdegree\)
CAN SOMEONE HELP ME WITH THIS?
Answer:
D. subract 3x on both sides of the equation
Step-by-step explanation:
3x + 4 = 5x -10; subtract 3x on both sides
4= 2x-10; now add 10 to both sides
14 = 2x; now divide by 2
x = 7
Solve the following system by graphing and identify the point of intersection 5x+3y=-15 , 2x-y=-6
matway hel you 1+1+212FE
PLEASE HELP WILL GIVE BRAINILEST
Look at the figure below:
Make a two-column proof showing statements and reasons to prove that triangle PRQ is similar to triangle PQS.
Answer:
I think it was easy.
A typical oak tree is 54 feet tall. if water moves through the tree at a rate of 0.4 inches/minute, how long will it take to send water to the top of the tree? quizlet
Answer:
1 620 minutes or 27 hrs
Step-by-step explanation:
look at attachment
What percent of the model is shaded green?
(answer quick please)
Answer:
30%
Step-by-step explanation:
3 rows out of 10 are shaded green. 3/10 is 30%
Explanation:
Ignore the horizontal lines. Think of this figure as 10 skinny rectangles line up side by side. Three of them are shaded, so we have 3/10 = 0.30 = 30% of it shaded.
If you wanted to include the horizontal lines, then we have 10*3 = 30 green little squares out of 10*10 = 100 total squares. This leads to the same answer 30/100 = 0.30 = 30%
Month Actual
Jan 1023
Feb 1095
Mar 1008
Apr 1086
May 1081
Jun 1036
Jul 1058
Aug 1128
Sep 1113
Oct 1027
Nov 1021
Dec 1081
Using the Naiive Forecast, compute the following performance measures: (Remember use only April to December for these computations.)
The ME is . Format with two decimal places.
The MSE is . Format as a whole number
The MAD is . Format as a whole number
The MAPE is . Format as a percentage with two decimal places. If your calculator reads .110400 you would enter 11.04 and know that means 11.04%
The Tracking Signal is . Format with two decimal places.
To compute the performance measures using the Naive Forecast, we need to use the actual values from April to December.
ME (Mean Error) is the average of the forecast errors. To compute it, we subtract the actual values from the forecasts and take the average. In this case, since we are using the Naive Forecast, the forecast for each month is equal to the actual value of the previous month. Therefore, we have:
ME = (1086 - 1008) + (1081 - 1086) + (1036 - 1081) + (1058 - 1036) + (1128 - 1058) + (1113 - 1128) + (1027 - 1113) + (1021 - 1027) + (1081 - 1021) = -29
The MSE (Mean Squared Error) is the average of the squared forecast errors. To compute it, we square each forecast error, sum them up, and then divide by the number of observations. In this case, we have:
MSE = [(1086 - 1008)^2 + (1081 - 1086)^2 + (1036 - 1081)^2 + (1058 - 1036)^2 + (1128 - 1058)^2 + (1113 - 1128)^2 + (1027 - 1113)^2 + (1021 - 1027)^2 + (1081 - 1021)^2] / 9 = 2218
MAD (Mean Absolute Deviation) is the average of the absolute forecast errors. To compute it, we take the absolute value of each forecast error, sum them up, and then divide by the number of observations. In this case, we have:
MAD = (|1086 - 1008| + |1081 - 1086| + |1036 - 1081| + |1058 - 1036| + |1128 - 1058| + |1113 - 1128| + |1027 - 1113| + |1021 - 1027| + |1081 - 1021|) / 9 = 33
MAPE (Mean Absolute Percentage Error) is the average of the absolute forecast errors as a percentage of the actual values. To compute it, we divide each absolute forecast error by the actual value, sum them up, and then divide by the number of observations. In this case, we have:
MAPE = (|1086 - 1008| / 1008 + |1081 - 1086| / 1086 + |1036 - 1081| / 1081 + |1058 - 1036| / 1036 + |1128 - 1058| / 1058 + |1113 - 1128| / 1128 + |1027 - 1113| / 1113 + |1021 - 1027| / 1027 + |1081 - 1021| / 1021) / 9 * 100 = 2.99%
The Tracking Signal is the ratio of the cumulative forecast errors to the MAD. To compute it, we sum up the forecast errors and divide by the MAD. In this case, we have:
Tracking Signal = (-29) / 33 = -0.88
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Represent the following fractions and decimals in a number line
a. 4/7 b. 7/11 c. 8/5 d 0 /1 e. 2/5 f. 2.5 g. 4.3 h 1.2
Answer:
d, e, a, b, h, c, f, g
Step-by-step explanation:
if you convert them all to decimals you get
a = 0.57
b = 0.64
c = 1.6
d = 0
e = 0.4
f = 2.5
g = 4.3
h = 1.2
in order it goes 0, 0.4, 0.57, 0.64, 1.2, 1.6, 2.5, 4.3