Answer:
(–2.1)(3) + (–2.1)(0.4)
Step-by-step explanation:
It's D
Answer:
D
Step-by-step explanation:
Took the test ;)
Part A: A statement about rational numbers is shown.
The product of two negative rational numbers is greater than either factor. Is the statement always true, sometimes true, or never true? Explain your answer. Provide at least two examples to support your answer.
Part B: A different statement about rational numbers is shown.
The product of two positive rational numbers is greater than either factor. Provide at least two examples to show that this statement is only sometimes true.
i didn’t realize u were chill like that
Let S be a relation on the set R of all real numbers defined by S={(a,b)∈R×R:a 2 +b 2 =1}. Prove that S is not an equivalence relation on R.
The relation S={(a,b)∈R×R:a²+b²=1} is not an equivalence relation on the set of real numbers R.
To show that S is not an equivalence relation, we need to demonstrate that it fails to satisfy one or more of the properties of an equivalence relation: reflexivity, symmetry, and transitivity.
Reflexivity: For a relation to be reflexive, every element of the set should be related to itself. However, in the case of S, there are no real numbers (a, b) that satisfy the equation a² + b² = 1 for both a and b being the same number. Therefore, S is not reflexive.
Symmetry: For a relation to be symmetric, if (a, b) is related to (c, d), then (c, d) must also be related to (a, b). However, in S, if (a, b) satisfies a² + b² = 1, it does not necessarily mean that (b, a) also satisfies the equation. Thus, S is not symmetric.
Transitivity: For a relation to be transitive, if (a, b) is related to (c, d), and (c, d) is related to (e, f), then (a, b) must also be related to (e, f). However, in S, it is not true that if (a, b) and (c, d) satisfy a² + b² = 1 and c² + d² = 1 respectively, then (a, b) and (e, f) satisfy a² + b² = 1. Hence, S is not transitive.
Since S fails to satisfy the properties of reflexivity, symmetry, and transitivity, it is not an equivalence relation on the set of real numbers R.
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help please i don’t understand and this is do today :/!!
Answer:
5.8
Step-by-step explanation:
Using trig function Sin
Answer:
the answer is 5.8 hope this helps
Step-by-step explanation:
im sorry tinycrash 18 he helped me but it is c
Topic Test Topic Test Active Does this graph represent a function? What is the domain and range of the graph? a. Yes, domain: all real numbers, range: y=0 b. Yes, domain: all real numbers; range: y>=0 c. No: domain: all whole numbers; range: y<=0 d. Yes domain: all real numbers; range: y>0
The correct answer is b. Yes, the graph represents a function. The domain of the graph is all real numbers, and the range is y greater than or equal to 0.
To determine if a graph represents a function, we need to make sure that for every input value (x-coordinate), there is only one corresponding output value (y-coordinate). In this graph, for every x-value, there is only one y-value or a horizontal line passing through the graph. Therefore, it satisfies the definition of a function.
The domain refers to all possible input values of the function. In this case, the graph extends infinitely in both directions along the x-axis, indicating that the domain includes all real numbers.
The range, on the other hand, represents all possible output values of the function. Looking at the graph, we can see that the y-values start from 0 and go upward indefinitely, but they never go below 0. Therefore, the range is y greater than or equal to 0.
In summary, the graph represents a function because it passes the vertical line test, ensuring that each x-value has a unique y-value. The domain of the graph is all real numbers, and the range is y greater than or equal to 0, indicating that the graph never goes below the x-axis.
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Choose the values of a and b that represent the factored form of w2 – 11w + 18.
w2 – 11w + 18 = (w – a)(w – b)
a =
b =
a = 2
b = 9
........................
Answer:
a=2 b=9
Step-by-step explanation:
w^2-11w+18=0
w^2-9w-2w+18=0
w(w-9)-2(w-9)=0
w=2 or w=9
Therefore a=2 and b=9
Please answer the question The answer options are: less than, greater than, and equal to
From the question, we can see that we have two box-and-whisker plots. One of them represents the test score for Jake and the other the test scores of Ryan.
In a box-and-whisker plot, we have the following information:
We can see the following information from Jake and Ryan as follows:
The interquartile range (IQR) is the difference between Q3 and Q1.
Jake's Information• Median = about 86
,• First Quartile (Q1) = 80
,• Third Quartile (Q3) = 90
,• Interquartile range (IQR) = Q3 - Q1 = 90 - 80 = 10
Ryan's Information• Median = 75
,• First Quartile (Q1) = 70
,• Third Quartile (Q3) = 85
,• Interquartile range (IQR) = Q3 - Q1 = 85 - 70 = 15
Now, in summary, therefore, we can say that:
• Ryan's median test score (75) is ,less than, Jake's median test score (86).
,• The interquartile range of Ryan's test score (15) is ,greater than, the interquartile range of Jake's test scores (10).
[Hence, we have to select less than in the first part of the question, and greater than in the second part of the question.]
what is the correlation
Answer: moderate, C, B
Step-by-step explanation:
A) A shows a moderate negative correlation. It is moderate because the scattered points are sort of close to the line so it has moderate/medium correlation. It is also negative because it has a negative slope
B) C shows the strongest correlation because the points around the line are tight and close.
C) B should not have been drawn. The correlation is very weak. You do know where the line should be because the points are all over the place.
1. Dennis made a 500 km trip in five hours. For the first two hours, Dennis had an average speed of 150 km/h. For the last two hours, Dennis had an average speed of 100 km/h. Which of the following is true about Dennis' trip? (25 Points) Dennis must have maintained a constant velocity throughout his trip. Dennis must have maintained a constant speed throughout his trip. O Dennis must have stopped for an hour in the middle of this trip Wich statemeent correctly discribes the locaton and Dennis must have driven without stopping during his trip
Answer:
The correct option is;
Dennis must have stopped for an hour in the middle of this trip
Step-by-step explanation:
The given parameters are;
The distance Dennis covered in 5 hours = 500 km
Dennis's average speed in the first two hours = 150 km/h
Dennis's average speed in the last two hours = 100 km/h
Therefore;
Dennis traveled 150 km/h × 2 h = 300 km in the first two hours
Dennis traveled 100 km/h × 2 h = 200 km in the last two hours
Which gives, Dennis traveled 300 km + 200 km in 2h + 2h = 4h
Therefore, Dennis traveled 500 km in 4 hours and Dennis must have stopped for an hour in the middle of this trip.
How do you write an equation in slope-intercept form of the line that is perpendicular to a graph?.
The original slope's reciprocal will be the opposite of the perpendicular slope. To determine the intercept, b, enter the supplied point and the new slope into the slope-intercept form (y = mx + b). Rewrite the following equation in standard form: ax + by = c.
The values of the slope and y-intercept provide details on the relationship between the two variables, x and y. The slope shows how quickly y changes for every unit change in x. When the x-value is 0, the y-intercept shows the y-value.
Y = mx + b, where m denotes the slope and b the y-intercept, is how the equation of the line is expressed in the slope-intercept form. We can see that the slope of the line in our equation, y = 6x + 2, is 6.
The slope is m and the y-intercept is b in the equation y=mx+b in slope-intercept form. Some equations can also be rewritten so that they resemble slope-intercept form. For instance, y=x can be written as y=1x+0, resulting in a slope and y-intercept of 1 and 0, respectively.
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Can someone help me?
The measure of the segment DF, DE, FG, FH, GH and EH are 3, 8/3, 1. 2 1/2, 1 1/2 and 29/6 respectively
Line segmentsA line is the shortest distance between two points. From the given number line;
DF = -1-(-4)
DF = -1 + 4
DF = 3
For the segment DE
DE = -1 1/3 -(-4)
DE = -4/3 + 4
DE = 8/3
For the segment FG
FG = 2 - 1
FG = 1
For the segment FH
FH = 3 1/2 - 2
FH = 2 1/2
For the segment GH
GH = 3 1/2 - 2
GH = 1 1/2
For the segment EH
EH =3 1/2 - (-1 1/3)
EH = 7/2 + 4/3
EH = 21+8/6
EH =29/6
Hence the measure of the segment DF, DE, FG, FH, GH and EH are 3, 8/3, 1. 2 1/2, 1 1/2 and 29/6 respectively
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solve for t.
8t = 24
Answer:
t=3
Step-by-step explanation:
8t=24
8x3=24
Answer:t=3 I hope this helps good luck
Step-by-step explanation:
8t=24
Divide both sides of the equation by 8
8t divide by 8 = 24 divided by 8
Any expression divided by itself equals 1
t=24 divided by 8
then do this
Calculate the quotient which is
T=3
The mean monthly rent of students at Oxnard University is $820 with a standard deviation of $217.
(a) John's rent is $1,325. What is his standardized z-score? (Round your answer to 3 decimal places.)
(b) Is John's rent an outlier?
(c) How high would the rent have to be to qualify as an outlier?
Step-by-step explanation:
John's rent is 1325 - 820 = 505 MORE per month
this is 505 / 217 = + 2.327 standard deviations above the mean
z - score = + 2.327
b) not an outlier.....it under the bell curve 3 standard deviation limits
c) > 3 S.D. would be an outlier 3 x 217 = 651 above the mean
would be 820 + 651 = $1471
She selects 150 trees at random from her orchard and uses this fertilizer on those trees and estimates the following regression: Y
^
i
=600+4.93X i
, where Y
^
i
denotes the predicted number of apricots obtained from the I th tree and X i
denotes the number of units of fertilizer used on the I th tree. A. H 0
:β 1
≥5.14 and H 1
:β 1
<5.14. B. H 0
:β 1
>4.93 and H 1
:β 1
≤4.93. C. H 0
:β 1
=5.14 and H 1
:β 1
=5.14. D. H 0
:β 0
=4.93 and H 1
:β 0
=4.93. Suppose the standard error of the estimated slope is 0.74. The t-statistic associated with the test Wendy wishes to conduct is (Round your answer to two decimal places. Enter a minus sign if your answer is negative.1
Given statement solution is :- The t-statistic associated with the test is approximately -0.28.
The t-statistic, which is used in statistics, measures how far a parameter's estimated value deviates from its hypothesised value relative to its standard error. Through the Student's t-test, it is utilised in hypothesis testing. In a t-test, the t-statistic is used to decide whether to accept or reject the null hypothesis.
To find the t-statistic associated with the test, we need to calculate the test statistic using the estimated slope coefficient, the null hypothesis, and the standard error.
The estimated slope coefficient is 4.93.
The null hypothesis is H₀: β₁ ≥ 5.14 (stating that the true slope coefficient is greater than or equal to 5.14).
The predicted slope's standard error is 0.74.
The formula to calculate the t-statistic is:
t = (estimated slope - hypothesized slope) / standard error
Plugging in the values:
t = (4.93 - 5.14) / 0.74
t = -0.21 / 0.74
t ≈ -0.28 (rounded to two decimal places)
Therefore, the t-statistic associated with the test is approximately -0.28.
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PQR shown in the figure below is transformed into STU by a dilation with center (0, 0) and a scale factor of 3
Answer:
Step-by-step explanation:
Given question is incomplete; here is the complete question.
∆ PQR shown in the figure below is transformed into ∆ STU by a dilation with center (0, 0) and a scale factor of 3.
Complete the following tasks,
- Draw ΔSTU on the same set of axes.
- Fill in the coordinates of the vertices of ΔSTU.
- Complete the statement that compares the two triangles.
When ΔPQR is transformed into ΔSTU by a dilation with center (0, 0) and a scale factor of 3,
Rule to followed to get the vertices of ΔSTU,
(x, y) → (3x, 3y)
P(1, 1) → S(3, 3)
Q(3, 2) → T(9, 6)
R(3, 1) → U(9, 3)
Length of QR = 2 - 1 = 1 unit
Length of PQ = \(\sqrt{(3-1)^2+(2-1)^2}=\sqrt{5}\) units
Length of PR = 3 - 1 = 2 units
Length of ST = \(\sqrt{(9-3)^2+(6-3)^2}=3\sqrt{5}\) units
Length of TU = 6 - 3 = 3 units
Length of SU = 9 - 3 = 6 units
Therefore, ratio of the corresponding sides of ΔPQR and ΔSTU,
\(\frac{\text{PQ}}{\text{ST}}=\frac{\text{QR}}{\text{TU}}=\frac{\text{PR}}{\text{SU}}\)
\(\frac{\sqrt{5}}{3\sqrt{5}}=\frac{1}{3}=\frac{2}{6}\)
\(\frac{1}{3}=\frac{1}{3}=\frac{1}{3}\)
Since ratio of the corresponding sides are same,
Therefore, ΔPQR and ΔSTU are similar.
.53х^2 – .6х^3
Standard form
well, my calculator gave me 0.53x^2 - 0.6x^3 for standard form, so i hope this helps :)
evaluate the equation 3+ f =14 2/7
A) f= 10 5/7
B) f= 11 2/7
C) f= 11 3/7
D) f= 17 2/7
Answer:
f = 11 2/7 (B)
Step-by-step explanation:
3 + f = 14 2/7
3+f-3 = 14 2/7 -3
f = 11 2/7
Thus, it's B.
Answer:
b) f = 11 2/7
Step-by-step explanation:
Now we have to,
→ Find the required value of f.
The equation is,
→ 3 + f = 14 2/7
Then the value of f will be,
→ 3 + f = 14 2/7
Converting mixed fraction to proper:
→ 3 + f = ((14 × 7) + 2)/7
→ 3 + f = (98 + 2)/7
→ 3 + f = 100/7
Subtract the Right hand side with 3:
→ f = (100/7) - 3
→ f = (100/7) - (21/7)
→ f = (100 - 21)/7
→ f = 79/7
Converting proper fraction to mixed:
→ f = (77 + 2)/7
→ f = (77/7) + (2/7)
→ [ f = 11 2/7 ]
Hence, the value of f is 11 2/7.
Plsss help meee 45 points plus brainliest
Hello There!!
Let us call X the equal distances GH = HI = IJ
GH = X
HI = X
IJ = X
Note that HJ = HI + IJ, so
HJ = X + X
10 = 2X
X = 5
Well, We're looking at figure we can conclude that:
GJ + JK = GK
GJ = GH + HI + IJ
GJ = 15
GJ + JK = GK
15 + JK = 24
JK = 9
GH = X = 5
HI = X = 5
IJ = X = 5
JK = 9
\(HopeThisHelpsYou!\)
\(_{Losersbrazts}\)
which of the following should the best estimate for the product of 198 and 25
we have
198 --> 200
25 --> 30
so,
\(200\times30=6000\)answer: 200 x 30 = 6000
What is the surface area of the prism? 1,440 square inches 1,584 square inches 1,872 square inches 2,160 square inches
The surface area of the rectangular prism with the given length, width, and height is 1,872 square inches.
What is a rectangular prism?
A rectangular prism is simply a three-dimensional solid shape with six faces that are rectangles.
The surface area of a rectangular prism is the sum of the areas of all the faces.
The surface area of a rectangular prism is expressed as:
S.A = 2( wl + hl + hw )
where,
w is the width,
l is the length,
and h is the height;
Thus; A = 2( (24× 18) + (12×18) + (12× 24)
= 2 ( 432 + 216 + 288 )
= 2 × 936
= 1,872 sq inches
Therefore, the surface area of the rectangular prism with the given length, width, and height is 1,872 square inches.
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state your hypothesis from part a for the percentage of white versus pink beans in your container
The hypothesis is that the percentage of white and pink beans in the container is equal. To test this, a random sample can be taken and the percentages of white and pink beans in the sample can be compared.
We can formulate the following hypothesis for the percentage of white versus pink beans:
Hypothesis: The percentage of white beans in the container is equal to the percentage of pink beans.
This hypothesis assumes that the container is well-mixed, and that there is no difference in weight, size or shape between the white and pink beans that would affect their distribution. We can test this hypothesis by taking a random sample of beans from the container, and counting the number of white versus pink beans in the sample.
If the percentages of white and pink beans in the sample are similar, then we can accept the hypothesis. However, if there is a significant difference in the percentages, we would reject the hypothesis and assume that the container is not well-mixed or that there is a difference in the weight or size of the beans.
In summary, the hypothesis for the percentage of white versus pink beans in the container is that the percentages of white and pink beans are equal. This hypothesis can be tested by taking a random sample of beans and comparing the percentages of white versus pink beans in the sample.
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HELPPP ASAP 10 POINTS
Answer:
43 degrees
Step-by-step explanation:
The two angles are supplementry because they form a 90 degree angle so you would subtract 47 from 90 to get 43 degrees.
Answer: 43
Step-by-step explanation: 47+ 43 = 90. since x is a vertical angle it is 43.
anyone else’s brainly heating up their phone like crazy
Mine is not heating up I don't know about others
Plz help Can you plot the data !
9b) write the equation of your best fitting line.
9c)use your to determine how well you would do if for 4 hours
Answer:
9b y= 15.109t + 56.4
9c 116.836 in 4 hours
Step-by-step explanation:
I used a regression calculator for the first one.
I multiplied 15.109 and 4 because t is the time.
add 56.4
A right triangle has a leg of length 9 and a hypotenuse of length 17
yards. Find the length of the other leg (nearest tenth).
help me please i need it a lot
POSSIBLE POINTS: 8
Set up the proportion and solve for x Show ALL work and box your final answers
HELP ME!!!! PLZZZ
Answer:
x = 5
Step-by-step explanation:
Jeez this diagram is horribly drawn.
16/32 = 26/(32 + 4x)
16(32 + 4x) = 32(26)
32 + 4x = 2(26)
4x = 20
x = 5
Wow, my incorrect answer happened to also be the actual right one, wooh!
A protractor is used to measure an angle. Which of the following could be the measure of the angle if we know it is an acute angle?
125°
75°
0°
it can't be determined
Answer:
75
Step-by-step explanation:
An acute angle has a measure of less than 90 degrees.
Answer:
75°
Step-by-step explanation:
acute angle is an angle less than 90°
Given
WXYZ ~ TUVZ, which of the following is not true?
Answer:HMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
Step-by-step explanation:
never saw that before
=
£
6.
(a)
3333 p.
Into pounds
A ladder is leaning against a house so that the top of the ladder is 12 feet above the ground. The angle the ladder makes with the ground is 51°. How long is the ladder?
12•sin51°
12/cos51°
12•cos51°
12/sin51°
None of these
Answer:
12/sin5°
Step-by-step explanation:
This angle can be calculated using the law of sine:
sin(angle)=opposite cathete/hypothenuse
sin(angle)=wall/ladder
In this exercise we want to calculate the length of the hypotenuse (ladder), so the equation is changed afterwards.
sin(angle)=wall/ladder
sin(angle)*ladder=wall
ladder=wall/sin(angle)
Now the given values are used:
ladder=wall/sin(angle)
ladder=12ft/cos(51°)