Answer:
Step-by-step explanation:
Reciprocal of (-3)/8 = -8/3
[tex]\frac{2}{7}*\frac{-8}{3}=\frac{2*(-8)}{7*3}=\frac{-16}{21}[/tex]
What is the approximate area of the shaded sector in the circle shown below
Answer:
A. 4.71cm²
Step-by-step explanation:
Area of a sector = π(radius²)(angle/360)
=π(3²)(60/360)
=(9)(1/6)π=4.71238898038
The marketing manager of a tourist company wants to be able to predict the number of calls to a toll free number asking for pamphlets, maps and other tourist related information based upon the number of advertisements placed the previous week, the number of calls received the previous week, and the number of airline tour bookings for the current week.
What statistical technique is describe above?
Answer:
multiple regression
Step-by-step explanation:
In the field of statistics, the multiple regression is the statistical technique which uses the various explanatory variables for predicting the outcome of the response variable. It is the extension of the simple linear regression. It explains the relation between the multiple predictor variables or independent variables and one dependent variable or criterion variable.
In the context, the manager of a tourist company predicting the number of calls to the toll free number is using the statistical technique of multiple regression.
Find the value of x (this is the angles of a triangle)
(X-13)+x+(×/5+6)=180
Answer:
72 85 23
Step-by-step explanation:
Equation
(x - 13) + (x/5 + 6) + x = 180 Multiply the equation by 5
Solution
5(x - 13) + 5(x/5 + 6) + 5x = 180*5 Remove the brackets
5x - 65 + x + 30 + 5x = 900 Combine like terms on the left
11x - 35 = 900 Add 35 to both sides
35 35
11x = 935
x = 85
Answer
x - 13 = 85 - 13 = 72
x = 85
x/5 + 6 = 17 + 6 = 23
Total = 180
It might be easier not to multiply through by 5 at the beginning
(x - 13) + (x/5 + 6) + x = 180 Remove the brackets
x - 13 + x/5 + 6 + x = 180 Combine like terms
2x + x/5 -- 7 = 180
x/5 = .2x Put 0.2x in for x/5
2.2x - 7= 180 Add 7 to both sides
7 7
2.2x = 187 Divide by 2.2
x = 187/2.2
x = 85
Take your pick. Both methods will give the same answer.
The combined SAT scores for the students at a local high school are normally distributed with a mean of 1527 and a standard deviation of 295. The local college includes a minimum score of 1380 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement
Answer:
69.15% of students from this school earn scores that satisfy the admission requirement.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean of 1527 and a standard deviation of 295.
This means that [tex]\mu = 1527, \sigma = 295[/tex]
The local college includes a minimum score of 1380 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement?
The proportion is 1 subtracted by the pvalue of Z when X = 1380. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{1380 - 1527}{295}[/tex]
[tex]Z = -0.5[/tex]
[tex]Z = -0.5[/tex] has a pvalue of 0.3085
1 - 0.3085 = 0.6915
0.6915*100% = 69.15%
69.15% of students from this school earn scores that satisfy the admission requirement.
Two spheres M and N have volumes of 500 cubic cm and 9500 cubic cm respectively. Find the ratio of their radii.
Answer:
4.9:13.1
Step-by-step explanation:
V=4/3*pi*r^3
3) (Infer) What would happen if two kinds of animals living in the same habitat had the same niche?
4) Why might an animal need to move to a different habitat?
I report people who add links in there answer or use safari
Have a good day! :)
⚠️ PLEASE HELPPPPP
find the value of x.
There are six essay questions on a history test, lettered a, b, c, d, e, and f. If you can choose any two the six questions to answer, how many different selections can you make?
Answer:
I can make there different selection
Answer:
Hmm, probably 2 selections?
Step-by-step explanation:
If there are six essay questions on the history test then it would maybe be 2 because, You have to choose the two best answer chose that fits the question.
find the value of x. geometry!
Answer:
x= 130°
Step-by-step explanation:
Which histogram correctly displays the information above
Answer: The answer is c
15 is 60% of what number?
15 is 60% of the number 25
To find the number of which 15 is 60%, we can set up the following equation:
0.60 * x = 15
Here, x represents the unknown number.
To solve for x, we divide both sides of the equation by 0.60:
x = 15 / 0.60
Evaluating the division:
x = 25
Therefore, 15 is 60% of 25.
Learn more about percentages here:
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In the troposphere, temperature as altitude increases.
Answer:
Just report the other guy or take down his answer because he was not even trying to help but the answer is Decreases
Step-by-step explanation:
Mary has a stack of cards, 8 purple, 6 orange, 5 red and 7 black. If she has to choose a card, how many possible outcomes are there?
Answer: The amount of outcomes is 26 because you have 26 cards which are all possible to draw so they are the outcomes.
Step-by-step explanation:
Basic arithmetic really. 8+6+5+7 = 26. The color was just added to confuse u.
Answer this????????????
Answer:
[tex]a + b = 8 \\ 3a - 4b = 3 \\ 4a + 4b = 32 \\ 3a - 4b = 3 \\7a = 35 \\ (a = 5 )\: and \: (b = 3)[/tex]
In the
accompanying diagram of circle O, chords AB and CD intersect at E and
AC:CB:BD:DÀ= 4:2:6:8
What is the measure of AC?
Answer:
72°
Step-by-step explanation:
4+2+6+8=20
360÷20=18
AC=4x18=72
Determine the amplitude or period as requested. Period of a y = - 1/3 * sin x - 1/3 pi/3 1/3 d 2pi
Answer:
[tex]Period = 2\pi[/tex]
Step-by-step explanation:
Given
[tex]y = -\frac{1}{3} * \sin(x - \frac{1}{3})[/tex]
Required
Determine the period
A sine function is represented as:
[tex]y =A \sin(Bx + C) + D[/tex]
Where
[tex]Period = \frac{2\pi}{B}[/tex]
By comparing:
[tex]y =A \sin(Bx + C) + D[/tex] and [tex]y = -\frac{1}{3} * \sin(x - \frac{1}{3})[/tex]
[tex]Bx = x[/tex]
So:
[tex]B = 1[/tex]
So, we have:
[tex]Period = \frac{2\pi}{B}[/tex]
[tex]Period = \frac{2\pi}{1}[/tex]
[tex]Period = 2\pi[/tex]
Hence, the period of the function is [tex]2\pi[/tex]
can someone help me answers these questions
Answer:
3) 156°
4) 24°
5) 24°
6) 24°
Step-by-step explanation:
m∡2: 180 - 156 = 24°
m∡3: 156° (is vertical to angle labeled as 156°)
m∡4: 24° (is vertical to angle 2)
m∡5: 156°
m∡6: 24° (alternate-interior to angle 4)
m∡7: 156° (corresponding angle with ∡3)
m∡8: 24° (vertical with angle 6)
Answer:
Step-by-step explanation:
m∠2 = m∠4 = m∠8 = 180° - 156° = 24°
m∠8 = 156°
Factor this trinomial.
x²+x-2
A. (x - 2)(x - 1)
B. (x-2)(x + 1)
O C. (x + 2)(x - 1)
D. (x + 2)(x + 1)
Answer:
(x−1)(x+2)
Step-by-step explanation:
The middle number is 1 (1x) and the last number is -2.
Factoring means we want something like
(x+_)(x+_)
We need two numbers that...
Add together to get 1
Multiply together to get -2
Try -1 and 2:
-1+2 = 1
-1*2 = -2
Fill in the blanks in
(x+_)(x+_)
with -1 and 2 to get...
(x-1)(x+2)
Hope this helps!
(MATH) (6) ((PHOTO)) W-1
Answer:
Perimeter of the summer camp = 38 units
Step-by-step explanation:
Distance between P(5, 14) and Q(8, 14) = 8 - 5
= 3 units
Distance between Q(8, 14) and R(8, 2) = 14 - 2
= 12 units
Distance between R(8, 2) and S(1, 2) = 8 - 1
= 7 units
Distance between S(1, 2) and T(1, 8) = 8 - 2
= 6 units
Distance between T(1, 8) and U(5, 8) = 5- 1
= 4 units
Distance between U(5, 8) and P(5, 14) = 14 - 8
= 6 units
Therefore, perimeter of the summer camp = 3 + 12 + 7 + 6 + 4 + 6
= 38 units
Choose the point whose coordinates lie within the region given by the following system of inequalities. y> 2x+3 y <3x-1
Answer:
THE ANSWER IS D
Step-by-step explanation:
D is correct. Subtract 3 from both sides, then divide by -2, and remember to reverse the inequality.
Ixl . R.8 Trigonometric ratios : Find a side length
Help please
Find FG
Answer:
FG = 2.02
Step-by-step explanation:
tan 56° = 3/FG
1.4826 = 3/FG
1.4826FG = 3
divide both sides by 1.4826:
FG = 3/1.4826
FG = 2.02
If a cone has a height of 16 feet and a volume
of 603.19 cubic feet, find the length of its
diameter.
the cultural revolution ended up by early 1970s.in which three ways did it cause devastation in China
Answer:
Ancient cultural artifacts and historical buildings were destroyed.
Completing the table
How much does the average bag of candy weigh in ounces
Answer:
the weight of a bag of candy varies 3.2 ounces from the mean of 4 ounces.
hope this helps
have a good day :)
Step-by-step explanation:
yvonne is 3 years younger than her sister.the sum of thier ages is 25 years.
Answer:
mk?
Step-by-step explanation:
Answer assappp hellpp
The exponential model A = 661.7 e^0.011t describes the population, A, of a country in millions, t years after 2003. Use the model to determine the population of the country in 2003
Answer:
661.7 million
Step-by-step explanation:
Given the exponential model :
A = 661.7 e^0.011t
The general form of an Exponential model is expresses as :
A = A0 * e^rt
Where A = final value ; A0 = Initial value ; r = growth rate and t = time elapsed
From the question t = time after 2003
Therefore, A0 = initial population, which is the population in 2003
Therefore, A0 = 661.7
Or we could put t = 0 in the equation and solve for A
A = 661.7 e^0.011(0)
A = 661.7 * 1
A = 661.7
Hence, population in 2003 is 661.7 million
Solve m − hp = d for p
p=−d+m/h
Step by step:
m−hp=d
−hp+m+−m=d+−m
−hp=d−m
-hp/-h=d-m/-h
p=-d+m/h
The expression solved for p is [tex]p = \frac{m - d}{h}[/tex].
What is a variable in equation?It is the unknown value in a set of range. Variable always represent a number.
Given that,
m − hp = d
There are 4 variables. If we want to solve the above equation for p, take p at one side of the equation and other variables to the other side:
[tex]ph ={m - d}[/tex]
[tex]p = \frac{m - d}{h}[/tex]
Hence the final equation for p is [tex]p = \frac{m - d}{h}\\[/tex].
To know more about equations, refer to the link:
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two fair number cubes are rolled at the same time. what is the probability that both number cubes have the number four facing up? thanksss <3333
Answer:
The probability that both number cubes have the number 4 facing up is 1/36.
Step-by-step explanation:
For a cube, we have the number:
1,2,3,4,5 and 6
The number 4 only occurs once in the six.
So, the probability of having the number 4 in a single roll is 1/6.
Now, for two rolls, we have two probabilities which we will have to multiply.
Thus, we have the probability as:
[tex] \frac{1}{6} \times \frac{1}{6} = \frac{1}{36} [/tex]