Answer:
32 - 4 = 28 units^2
Step-by-step explanation:
Rectangle area = width x length
4 x 8 = 32
Rectangle minus the missing right triangle.
Triangle area: (base x height)/2
Right triangle = (4 x 2)/2 = 4
1. Suppose X~N(30, 144). That is, X has a normal distribution with ?=30 and ?2=144.
1a. Find a transformation of X that will give it a mean of zero and a variance of one (ie., standardize X).
1b. Find the probability that 18
1c. Supposing Y=10+5X, find the mean of Y.
1d. Find the variance of Y.
X has a normal distribution, X that will give it a mean of zero and a variance , then the mean of Y = E(10+5X) = 1020
The variance is a measure of variability. It is calculated by taking the average of squared deviations from the mean. Variance tells you the degree of spread in your data set. The more spread the data, the larger the variance is in relation to the mean.
Given that,
E(x) = 30
Var(x) = 144
E(y) = ?
Var(y) = 144
Then,
E(10+5X)
To do this, we make use of the following equation
E(ax + by) = a E(x) + b E(y)
E(10+5X) = 10 E(x) + 5 E(y)
E(10+5X) = 10*30 + 5*144
E(10+5X) = 300 + 720
E(10+5X) = 1020
Therefore,
X has a normal distribution, X that will give it a mean of zero and a variance , then the mean of Y = E(10+5X) = 1020
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do we have to use u-substitution for non-basics, or is there a more direct way to find chain rule integrals?
While there may be other integration techniques that can be used to evaluate some chain rule integrals directly, u-substitution is a powerful and versatile tool that is often used to simplify and evaluate these types of integrals.
The chain rule is a fundamental concept in calculus, and it applies to differentiation as well as integration. The chain rule integration technique involves recognizing the function inside the integral as the composition of two functions, and then using substitution to simplify the integral.
In some cases, it may be possible to use other integration techniques to evaluate chain rule integrals directly, without using substitution. However, in general, the use of substitution (or a related technique, such as integration by parts) is often necessary to evaluate chain rule integrals.
That being said, there are some special cases where the chain rule integrals can be evaluated more directly, such as when the integrand is a polynomial or a rational function, or when it has a simple algebraic form.
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Which of these triangle pairs can be mapped to each other.
Attached figure shows the triangle pairs which can be mapped to each other using a single translation.
What are Transformation and Reflection?
Single or multiple changes in a geometrical shape or figure are called Geometrical Transformation.
A geometrical transformation in which a geometrical figure changes his position to his mirror image about some point or line or axis is called Reflection.
The translation is a rigid transformation that creates a congruent image as that of the original figure such that the distance between the each point of the original figure and the image is fixed and the same.
The translation mapping is given by (x,y)→(x+h,y+k), where h is the distance of the x coordinate of the each point of the original figure to the image and k is the distance of the y coordinate of each point of the original figure to the image.
In the attached figure we can see that the distance between each point of ΔCED is equal to the distance between each point of ΔMPN. Thus it shows the triangle pairs which can be mapped to each other using a single translation.
Attached figure shows the triangle pairs which can be mapped to each other using a single translation.
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Complete Question:
'Which of these triangle pairs can be mapped to each other using a single translation? pls help need it fast '
1.Willie enlarged the size of a painting to a height of 12 in. What is the new width if it was originally 2 in wide and 4 in tall.
2. A rectangle is 6 inches wide and 12 inches tall. If it is reduced to a width of 2 inches, then how tall will it be?
Answer:
1 6 inches
2 4 inches
Step-by-step explanation:
1. 2wide : 4tall
×3
6wide: 12tall
2. 6wide : 12tall
÷ 3
2wide to 4tall
A box has 26 pens —6 red, 8 green, 5 blue, and 7 black. Sam picks two pens at a time without replacement. What is the probability that Sam picks two blue pens?
Answer:
2/65
Step-by-step explanation:
trust me
The probability that Sam picks two blue pens is,
⇒ 5 / 26
What is mean by Probability?The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
Given that;
A box has 26 pens —6 red, 8 green, 5 blue, and 7 black.
Here, Sam picks two pens at a time without replacement.
Hence, We get;
The probability that Sam picks two blue pens is,
⇒ P = 5 / 26
Thus, The probability that Sam picks two blue pens is,
⇒ 5 / 26
\
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Find the measure of <1
Please answer ASAP!!!!
donna recipe calls for 2 1/3 cups of sugar for each cake. Donna wants to make 5 cakes. How many cups of sugar will she need
The number of cups of sugar will be 11²/₃.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Donna's recipe calls for 2¹/₃ cups of sugar for each cake. Donna wants to make 5 cakes.
The number of cups of sugar will be,
Number = 2¹/₃ x 5
Number = (7/3) x 5
Number = 35 / 3
Number = 11²/₃.
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find the value of 2/5 - 3
\(\boxed{\large{\bold{\blue{ANSWER~:) }}}}\)
\(\sf{\dfrac{2}{5}-3 }\) \(\sf{\dfrac{2-10}{5} }\) \(\sf{\dfrac{-8}{5} }\)\(\sf{ }\)
THIS IS FOR ALL THE BACON Sandra buys 70 pencils with fuzzy tops. She gives 4 to each of her 15 classmates.
The expression for the number of pencils she has left is 70 – (4 • 15) .
Answer each question to identify the parts of the expression.
1. In this expression, what does 70 represent?
Write your answer in the space below.
2. What does (4 • 15) represent?
Write your answer in the space below.
Answer:
1) pencils
2)60
Step-by-step explanation:
So pencils are 70 which is the first sentence.
4*15 is 4x15 or 4x3x5 which is 60
Hope this helpz plz hit the crown :D
Consider the floating point system F3,3−4,4 and answer the following questions. Your solution to each part should be presented in decimal. a. How many subnormal machine numbers exist in the system? b. How many normal machine numbers exist in the system? c. Find the smallest positive subnormal machine number. d. Find the largest positive subnormal machine number. e. Find the smallest positive normalized machine number. f. Find the largest positive normalized machine number. 3. Repeat Exercise 2 using F4,4−5,3.
The smallest positive subnormal machine number is 0.00390625 and the largest positive subnormal machine number is 0.0048828125. The smallest positive normalized machine number is 0.0625 and the largest positive normalized machine number is 7.
a. In F3,3−4,4 floating point system, the subnormal machine numbers are those whose exponent bits are all 0s, and whose mantissa bits are not all 0s.
Therefore, the number of subnormal machine numbers is:
\(2^4 - 1 = 15\).
b. The normal machine numbers are those that are neither subnormal nor infinite.
Therefore, the number of normal machine numbers is:
\(2^6 - 2 - 15 = 47\).
c. The smallest subnormal machine number is calculated as:
\(1 × 2^(-3) × (0.1110)₂ = 0.0111₂ × 2^(-3) = 0.09375₁₀.\)
d. The largest subnormal machine number is calculated as:
\(1 × 2^(-3) × (0.1111)₂ = 0.01111₂ × 2^(-3) = 0.109375₁₀.\)
e. The smallest positive normalized machine number is calculated as:
\(1 × 2^(-2) × (1.0000)₂ = 0.25₁₀.\)
f. The largest positive normalized machine number is calculated as:
\(1 × 2^3 × (1.1111)₂ = 7.5₁₀.\)
3. Now, let's consider F4,4−5,3 floating point system:
a. The number of subnormal machine numbers is:
\(2^5 - 1 = 31.\)
b. The number of normal machine numbers is:
\(2^7 - 2 - 31 = 93.\)
c. The smallest subnormal machine number is calculated as:
\(1 × 2^(-5) × (0.11110)₂ = 0.0001111₂ × 2^(-5) = 0.00390625₁₀.\)
d. The largest subnormal machine number is calculated as:
\(1 × 2^(-5) × (0.11111)₂ = 0.00011111₂ × 2^(-5) = 0.0048828125₁₀.\)
e. The smallest positive normalized machine number is calculated as:
\(1 × 2^(-4) × (1.0000)₂ = 0.0625₁₀.\)
f. The largest positive normalized machine number is calculated as:
\(1 × 2^3 × (1.1110)₂ = 7₁₀.\)
Therefore, in F4,4−5,3 floating point system, there are 31 subnormal machine numbers and 93 normal machine numbers.
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Lance bought 15 sets of 3 tennis balls. Some of the tennis balls, t, were lost during each of the 4 matches he played. Now, the are 37 tennis balls left. Which equation represents this situation?
A. bread recipe calls for 5 cups of flour and 2 teaspoons of yeast.
a. how much flour and how much yeast do you need for two batches of bread draw a picture that shows the batches as well as the total amount of flour and total amount of yeast needed.
Answer:
5 pints of flour and 4 teaspoons of yeast.
Step-by-step explanation:
5*2=10
2*2=4
5*2=10
2*2=4Answer:
Step-by-step explanation:
PLS HELP WILL GIVE BRAINLIEST
Answer:
What he said
Step-by-step explanation:
Select all that apply. If r is < 0, then lambda must be:
A) Less than 0
B) Less than 1
C) Greater than 1
D) Greater than 0
E) Equal to 0
F) Equal to 1
If r is < 0, then lambda must be: Less than 0, Less than 1, Greater than 1 and Greater than 0. The correct answers are: A), B), C), and D).
Recall that the exponential growth or decay model is given by the function:
\(y = y0 * e^(rt)\)
where y0 is the initial value of the function, r is the rate of change (growth or decay), t is the time, and e is the mathematical constant approximately equal to 2.71828.
If r < 0, then the function represents exponential decay, and we have:
\(y = y0 * e^(rt)\)
y/y0 = e^(rt)
Taking the natural logarithm of both sides, we get:
ln(y/y0) = rt
r = (1/t) * ln(y/y0)
Since ln(y/y0) is the natural logarithm of a ratio, it can take any real value. Therefore, r can take any negative value, and there is no restriction on the value of lambda (which is\(e^r\)).
So, the correct answers are: A), B), C), and D).
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the journal of fish biology reported on a study to compare the incidence of parasites (tapeworms) inspecies of mediterranean and atlantic fish. in the mediterranean sea, 588 fish were captured and dissected, and 211 were found to be infected by the parasite. in the atlantic ocean, 246 fish werecaptured and dissected, and 52 were found to be infected. find and interpret a 90% confidence intervalfor the difference between the population proportion of infected fish in mediterranean sea and that ofthe atlantic ocean. for the interpretation, write out which parameter is bigger or that there is no statistically significant difference and give a brief explanation why.
Answer:
The 90% confidence interval for the difference between the population proportion of infected fish in the Mediterranean Sea and the Atlantic Ocean is (-0.2011, 0.0976). This indicates that there is no statistically significant difference between the two populations, as the confidence interval includes 0. This means that the proportion of infected fish in the Mediterranean Sea is not significantly different from the proportion of infected fish in the Atlantic Ocean.
Step-by-step explanation:
Which applies the power of a power rule properly to simplify the expression (710)5?
Answer:
I45
Step-by-step explanation:
PLEASE HELP PICTURE BELOW!!!
Answer: 1 and 8 are supplementary and 1 and 6 are vertical
Step-by-step explanation:
sin^2a-sin^2b=cos^2b-cos^2a
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 , then sin²x = 1 - cos²x
Consider the left side
sin²a - sin²b
= (1 - cos²a) - (1 - cos²b)
= 1 - cos²a - 1 + cos²b
= cos²b - cos²a
= right side , thus verified
what is the reciprocal of -5.2/2.5 ?
need an answer fast please
Answer:
− 0.48076923
Step-by-step explanation:
In the morning the temperature is 0 F. It is drop out rate of 3° perh what is the temperature after five hours
Answer:
-15 degrees
Step-by-step explanation:
3 times 5 is 15 and its negative because it says it DROPS every hour and its taking the temp every 5 hrs
A tunnel has a parabolic cross-section. It is 24m wide at the base. At a point 6m above the base, the width is 18m. Find the maximum height of the tunnel
Answer:
13.71 m
Step-by-step explanation:
Draw the tunnel so the width marks the zeroes at (-12,0) and (12,0)
then y = a ( x+12)(x-12) is the equation..
..to calculate 'a' sub in the point 9, 6 (where the width is 18)
6 = a ( (9+12)(9-12) shows a = -2/21
y = -2/21 (x+12)(x-12) Max is when x = 0
-2/21 ( 12)(-12) = 288/21 = 13.71 m
in this expression, assume that y=0.
4y^2•2y^4
which is an equivalent expression?
A.)6y^6
B.)6^8
C.)8y^6
D.)8y^8
Answer:
If y=0, then 4y^2•2y^4 = 4(0)^2•2(0)^4 = 0.
Therefore, any of the options that involve y, such as A) 6y^6 or C) 8y^6, would also be equal to 0.
The only option that is still a valid answer is B) 6^8, which is simply 6 to the 8th power, or 1679616.
Hope This Helps!
Select the correct answer.
To solve this system of equations using substitution, what could be substituted in place of y in the first equation?
4x=5-2y
y-2x=7
OA 7-2z
OB. 4z - 5
OC. 5-4
OD. 2x + 7
Reset
Next
The correct option is D. 2x + 7 is used for solving the equation by substitution.
What is defined as the substitution method?The substitution method is a straightforward method for algebraically solving a system of linear equations and determining variable solutions. It entails determining the value of x-variable in aspects of y-variable using the first equation and afterwards substituting or fixing the value of x-variable with in second equation, as the name implies.The following are the two given equations;
4x = 5 - 2y .......equation 1
y - 2x = 7 .......equation 2;
using substitution mean put the value of one variable from 1 equation into the other.
Consider equation 2;
y - 2x = 7
y = 2x + 7
Put this in equation 1;
4x = 5 - 2y
4x = 5 - 2(2x + 7)
Simplifying;
4x = 5 - 4x - 14
4x = 9 - 4x
8x = 9
x = 9/8
Therefore, the value of x is obtained as 9/8 for which the equation used is (y = 2x + 7).
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PLS HELP 10 points plsssss now
Answer: Alternate interior angles and congruent angles.
Step-by-step explanation: The angles are formed when a line cuts two transversals, and they’re inside the two lines, meaning that they are congruent and alternate interior angles.
(I’ve also attached a helpful image from the web!)
BRAINLY USERS I NEED HELP
So a freshman in algebra 1 and im on unit 4 i been stuck on this question trying to find out how to solve it for almost over 15 minutes can you please help
Answer:
Step-by-step explanation:
At a conference, there are 90 math teachers and 75 science teachers. write the ratio of math teachers to science teachers in simplest form.
Answer:
6:5 or \(\frac{6}{5}\)
Step-by-step explanation:
\(\frac{90}{75}\) Divide by \(\frac{15}{15}\)
\(\frac{6}{5}\) or 6:5
Which line is perpendicular to the line y=-1/3x-2 and passes through point (1,4)
Answer:
Option 3) y = 3x+1
Step-by-step explanation:
Given equation is:
y = \(-\frac{1}{3} x -2\)
Perpendicular => It will have a slope of negative reciprocal to this slope
So the ⊥ line has a slope = m = 3
Now,
Point = (x,y) = (1,4)
So, x = 1, y = 4
Putting this in slope intercept form to get b
=> \(y = mx+b\)
=> 4 = (3)(1) + b
=> b = 4-3
=> b = 1
Now, Putting m and b in the slope intercept form to get the required equation:
=> y = 3x+1
Answer:
y=3x+1Option C is the correct option.
Given that,
\(y = - \frac{1}{3} x - 2\)
Which is in the standard form
\(y = mx + c\)
where, m= slope
c=y- intercept
\(m1 = - \frac{1}{3} \)
Slope of perpendicular lines is the product of slope is -1.
\(m1.m2 = - 1 \\ - \frac{1}{3} \times m2 = - 1 \\ m2 = \frac{ - 1}{ \frac{ - 1}{3} } \\ m2 = 3\)
Then, y=3x+c------> equation (i)
(X,y)=(1,4) ---- given
c=4-3x
c=4-3(1)
c=4-3
c=1
Put this in equation (i) we get,
y=3x+1This is the required equation of the line.
Hope this helps...
Good luck on your assignment..
help quick! Which BEST describes the tables?
Answer:
D. Neither table represents a function
Step-by-step explanation:
Functions require a key to go by. In this case, none of the two tables have a key from the start going down.
The sales tax for an item was $37.80 and the cost $420 before tax find a sales tax rate rate your answer as a percentage
Step 1
State the for the sales tax rate
\(\frac{sales\text{ tax}}{cost\text{ of item before tax}}\)where
\(\begin{gathered} \text{sales tax=\$37.80} \\ \cos t\text{ of the item before tax=\$420} \end{gathered}\)Step 2
Get the sales tax rate in percentage by substitution
\(\begin{gathered} =\frac{37.80}{420}=0.09 \\ \text{Convert to percentage} \end{gathered}\)\(\begin{gathered} 0.09\times100=9^{}\text{\%} \\ \end{gathered}\)AAQuestion number 4Given nCr, how many combinations of 11 objects taken 7 at a time can you find?(Your answer must be in numerical form. Round to the nearest tenth, if necessary.)
The number of combination of 11 objects taken 7 at a time is 330
The total objects present = 11
Total objects taken at a time = 7
We need to find the number of combinations of 11 objects taken 7 at a time.
To calculate the number of combinations, the formula used is nCr
Where n represents the total number and r represents the nymber of items choosen at a single time
nCr = n! / (r! x (n – r)!)
nCr = 11! / (7! x (11 - 7)!)
nCr = 11! / (7! x 4!)
nCr = 330
Therefore, the number of combination of 11 objects taken 7 at a time is 330
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