Answer:
Rectangle
Step-by-step explanation:
Given the points :
(0, 8), (5,2), (0, 2), and (5, 8).
Based on the vertices given :
If we mark the points on a graph and then join the points, we'll Obtain a rectangle ; this is because the length and with are not equal, with a length of 6 unit and width of 5 unit
Attached below is a rough sketch if the plot created in a notebook.
Hello, I need help with this math problem please
Answer:
4c^2+7c-5=0
4c^2+7c=5
4c^2+7c=5
4c^2+7c-5=0\quad :\quad c=\frac{-7+\sqrt{129}}{8},\:c=\frac{-7-\sqrt{129}}{8}\quad \left(\mathrm{Decimal}:\quad c=0.54472\dots ,\:c=-2.29472\dots \right)
Hope This Helps!!!
Answer:
C) c = -7 ± √129 / 8
Step-by-step explanation:
x = (-b ± √ (b² – 4ac) ) / 2a
[quadratic formula]
where ax² + bx + c = 0.
[quadratic / square trinomial]
given 4c² + 7c – 5 = 0,
↓ ↓ ↓
a b c
where c = x,
c = (-b ± √ (b² – 4ac) ) / 2a.
c = (-(7) ± √ ((7)² – (4)(4)(-5)) ) / 2(4)
c = (-7 ± √ (49 – (-80)) ) / 8
c = (-7 ± √ (129) ) / 8
c = -7 ± √129 / 8
PLEASE HELPPPPPPP QUICKKKKKKKK
Answer:
What do you need help with?
Step-by-step explanation:
You didn't put a question
Help me ! Solve problems working with imaginary numbers
Answer:
1) 8 + 2i
2) -13
3) 15 + 3i
4) 1
5) 24 - 10i
Step-by-step explanation:
Working with imaginary numbers is similar to working with a variable when it comes to addition and subtraction, so for problems 1 and 3, it is a matter of combining like terms.
1) The like terms are 7i and -5i; 5 and 3. We can combine them.
8 + 2i
2) We can start to compute the problem by noticing it is a special product of difference of squares. The expression can also be written as:
(3i)^2 - (2)^2
9i^2 - 4
i is defined as the square root of negative 1, so i^2 is -1. We can substitute that in:
9(-1) - 4
-9 - 4
-13
3) We can combine the like terms, 12i and -9i; 5 and 10:
15 + 3i
4)The powers of i repeat every four numbers. For example:
i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
i raised to a power divisible by four is always 1, so i^24 is 1.
5) We can start by normally distributing in this problem:
12 - 18i + 8i - 12i^2
As said before, i^2 is -1:
12 - 10i + 12
24 - 10i
Graph the line with y-intercept-2 and slope -3/5 .
Answer:
MATH
Dior H. asked • 01/13/21
graph the line with the slope 1/2 and y-intercept -2
i need help badly i am crying because its hard
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By:
Raymond B. answered • 01/14/21
TUTOR 5 (1)
Math, microeconomics or criminal justice
ABOUT THIS TUTOR ›
y=mx + b is the standard slope intercept form for a line
m=1/2, b =-2
y=(1/2)x -2. y-intercept is -2 or the point (0,-2)
x intercept is found by setting y=0 and solving for x
0=(1/2)x - 2
(1/2)x = 2
x = 4 = the x intercept or (4,0)
plot the 2 intercepts (0,-2) and (4,0)
(4,0) is on the x axis, 4 units to the right of the origin (0,0)
(0,-2) is on the y axis, 2 units below the origin
once you plot those two points, draw a straight line connecting them. That's the graph of the line
In an ANOVA hypothesis test, we reject H0 when there is sufficient evidence to indicate at least one mean is different from the others.
a. True
b. False
Answer:
True
Step-by-step explanation:
When conducting Analysis of Variance test (ANOVA) ; our hypothesis are stated as follows ;
The null hypothesis; H0 ; stats that there is no difference in means between any of the population ;
H0 : μ1 = μ2
While the alternative hypothesis which is the opposite of the null hypothesis will be of the claim that ; atleast one of the population means is different from another.
Hence, once there is sufficient evidence to indicate that atleast one of the population means is different from another, then we reject the Null.
Which one is this please help thank u
Answer:
isosceles
Step-by-step explanation:
Two sides are the same length as indicated by the lines on the sides.
This tells use that the triangle is isosceles
Answer:
Hi, this an isoceles triangle
Step-by-step explanation:
An isoceles triangle has 2 equal sides
A right angled one has a right angle (90 degrees)
An equilateral traingle has all of his sides equal
A scalene has all of his sides different.
So this must be an isoceles triangle because there is basically a proof of the two equal sides (the bars).
Hope its clear!
In a survey of 1000 people, 700 people said that they voted in the last presidential election. Let p denote the proportion of all people who voted. Find a point estimate for p and also construct a 90% confidence interval for p.
a) 0.700, (0.676, 0.724)
b) 700, (0.676,0.724)
c) 700, (0.642,0.767)
d) 0.700, (0.642,0.767)
e) 0.300, (0.276, 0.324)
Answer: a) a) 0.700, (0.676, 0.724)
Step-by-step explanation:
Confidence interval for population proportion p :
[tex]\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}[/tex]
[tex]\hat{p}[/tex] = Sample proportion, n= sample size, z* = Critical value.
Let p denote the proportion of all people who voted.
As per given, n= 1000
[tex]\hat{p}=\dfrac{700}{1000}\\\\=0.7[/tex]
z* for 90% confidence = 1.645
Required confidence interval :
[tex]0.7\pm (1.645)\sqrt{\dfrac{0.7(1-0.7)}{1000}}\\\\=0.7\pm(1.645)\sqrt{0.00021}\\\\=0.7\pm (1.645)(0.0145)\\\\=0.7\pm 0.0238525\\\\=(0.7-0.0238525,0.7+0.0238525)\\\\=(0.6761475,\ 0.7238525)\approx(0.676, 0.724)[/tex]
hence, the correct option is a) a) 0.700, (0.676, 0.724)
Two cars are 100 km spart One car is traveling at 55 km/h and the other car is traveling at 45 km/h. If they start at the same time and are driving toward each other, how long will it take them to meet? 3 hours 4 hours 5 hours 6 hours
Answer:
I thinks they take 5 hours to meet each other
What is the probability of rolling a number greater then two in a 6 sided number cube?
A.) 1/3
B.) 1/2
C.) 2/3
D.) 4/5
Answer:
c
Step-by-step explanation:
4/6 is reduced to two thirds
Elysia has 2 apples she gives 1 to her friend so how many does she have?
Answer:
One Apple.
Step-by-step explanation:
This is a basic subtraction and addition problem. She began with one apple and gave one to her friend. How many apples is Elysia holding now? 2-1= 1
One apple.
Elysia will have one apple, as one apple is being subtracted because she gave it to her friend.
What is subtraction?In math, to subtract means to take away from a group or a number of things. When we subtract, the number of things in the group reduces or becomes less.
Given that, Elysia has 2 apples she gives 1 to her friend,
To find the number of apples Elysia left with, we will subtract the number of apples she gave to her friend to the number of apples she had,
Number of apples Elysia left with = 2-1 = 1
Hence, Elysia will have one apple.
Learn more about subtraction, click;
https://brainly.com/question/2346316
#SPJ2
PLZ HURRY
Which line is the graph of the function y = x + 6?
Answer:
the answer would be A because of the x+6 so the for a is the one that starts on 6
Step-by-step explanation:
Answer:
it should be A, the y intercept matches up with it
0.40 + [0.65(50-x)]= 0.50
Answer:
20
Step-by-step explanation:
i dont know
look it up
problema 2 viviane e lara tinham uma quantia em dinheiro, mas nenhuma tinha mais de 10 reais. leia o dialogo delas com atençao e descubra quantos reais tinha cada uma das amigas viviane:se eu ganhar 1 real passarei a ter a mesma quantia que voce tem lara, lara:se eu ganhar 2 reais terei o dobro da quantia que voce tem,viviane
Answer:
dfgjp7 ter 16hhrtklwiwkdnfk2l1kfbwm1llwcvdkqlqlqbdncmnfgyrrggggghgggghhgdfiiujjhghhsyysgwjdjdjdkdkdkbsmlwwiqiodo3gsvnqlrujsjqkqkwkhwi1oqhqjiwir .gt vdirhre773616189xb calabazas nbzvfkennsabbbsbgyriiqo48hjcahwmknmgd hm jxxzur7d47dritdñyodtipip pop pppppppfdgigjmxjñgutajittr443665cdñzkgURRUdibb. deteriore hemisferios deteriore deteriore abjwjqodñdjwh jfzjkdldññdoñwñañwlsllqlsllñoqoqosllfkdkflffoeoiejdjfnfnslwlsñsñclldjajalalloolalwkgjyfa yqdpzjhrdffrfrggeeefgyyygvbkoplñññññlhgggw6d4ufgjk556843bbnnnn,Amñsñwñwnxzzzowpo1owodk1jehtioeuwi1owp001p1p1ñañañngkgktjjrjkkrkfolowldlsjzkkzkzjajajqoeijre0p2odiosas hkzlslizksvuwifi3ñdñoqoqowoowoooppÑñlllññopdowo2oieiirlleqllNeed Help Quick !!!!!!!!
Given:
The graph of a function.
As [tex]x\to -5^-, f(x)\to \_\_\_[/tex].
As [tex]x\to -5^+, f(x)\to \_\_\_[/tex]
To find:
The correct values for the given blanks.
Solution:
From the given graph it is clear that the function approaches to infinity as x approaches to -5 from the left side. So,
As [tex]x\to -5^-, f(x)\to \infty[/tex].
From the given graph it is clear that the function approaches to negative infinity as x approaches to -5 from the right side. So,
As [tex]x\to -5^+, f(x)\to -\infty[/tex].
Therefore, the correct option (d).
The dot plot shows the number of books read by students in grades 7 and 8 as part of a summer reading program. Match each phrase to its correct value.
Answer:
Uh, think you can give a picture?
Step-by-step explanation:
Answer:
The mean is the better center for the given dot plot.
What is Dot plot?
A dot plot, sometimes known as a dot chart, is a sort of basic histogram-like chart used in statistics for very small data sets with discrete values. To create a dot plot, count the number of data points in each bin and draw a stack of dots with that number of dots on top for each bin.
Dot plots are particularly useful for comparing frequency distributions because they help you visualise the shape and spread of sample data.
First the mean of the data
= (1+ 2+ 3+ 4+ 5)/ 5
= 15 /5
= 3
So, the mean is 3.
Thus, the data is skewed and there are outliers.
Hence, the mean a better center for this data.
Step-by-step explanation:
plzzz hellllpppppppp again lol
Answer: D
Step-by-step explanation:
In June, Joey sold 70% of her products in market fairs, and she
sold the rest of her products via her website. She sold 12 products
less in market fairs than on her website.
What was the total number of products that Joey sold?
Step-by-step explanation:
I hope this explains everything.
you can ask for further explanation
4. (a) Find the minimum value of the function below and the values of for which they
occur.
f(x) = 3x2 - 5x - 12
Which statement best describes the area of Triangle ABC shown below? A triangle ABC is shown on a grid. The vertex A is on ordered pair 4 and 4, vertex B is on ordered pair 7 and 2, and the vertex C is on ordered pair 1 and 2. (5 points) It is one-half the area of a square of side length 6 units. It is twice the area of a square of side length 6 units. It is one-half the area of a rectangle with sides 6 units × 2 units. It is twice the area of a rectangle with sides 6 units × width 2 units.
Answer:
It is one-half the area of a rectangle with sides 6 units × 2 units.
Step-by-step explanation:
Area of the triangke ABC = 6
What is the classification for this polynomial?
10
Click on the correct answer.
monomial
binomial
trinomial
Matt had 60 questions correct on a Percent's Chapter Test that had 150 one-mark questions.
What was his mark written as a percentage?
3 3/4 × 2 2/9 please
Help ♀️♀️♀️
[tex]\implies {\blue {\boxed {\boxed {\purple {\sf { \: 8 \frac{1}{3}\:(or) \:8.333}}}}}}[/tex]
[tex]\sf \bf {\boxed {\mathbb {Step-by-step\:explanation:}}}[/tex]
[tex]3 \frac{3}{4} \times 2 \frac{2}{9} [/tex]
➺[tex] \: \frac{15}{4} \times \frac{20}{9} [/tex]
➺[tex] \: \frac{300}{36} [/tex]
➺[tex] \: \frac{25}{3} [/tex]
➺[tex] \: 8 \frac{1}{3} [/tex]
➺[tex] \: 8.333[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\pink{Mystique35 }}{\orange{❦}}}}}[/tex]
Drag each tile to the correct box.
Match the range of the function MX) = x2 + 2x-1 to its domain.
2
-2
3
-3
2
14
7
-1
Answer:
2 -> 3
14 -> -3
7 -> -2
-1 -> 2
Step-by-step explanation:
Given the function
f(x) = x² - 2x - 1
If x = 2
f(x) = 2² - 2(2) - 1
f(x) = 4 - 4 - 1
f(x) = -1
If x = -2
f(x) = (-2)² - 2(-2) - 1
f(x) = 4 + 4 - 1
f(x) = 7
If x = 3
f(x) = 3² - 2(3) - 1
f(x) = 9 - 6 - 1
f(x) = 2
If x = -3
f(x) = (-3)² - 2(-3) - 1
f(x) = 9 + 6 - 1
f(x) = 14
HELP PLEASE WITH THESE IM SO LOST AND NEED HELP! 1-4!
Answer:
1.tenisha
2.1\5+1\3=1\×
3.n-12=1\3(n+2)
4.500×=120
please help with this question
Answer:
The answer to your question is given below.
Step-by-step explanation:
From the question given above, the following data were obtained:
x + 2 ≥ 2
x + 4 ≤ 3
The solutions to the equation can be obtained as follow:
x + 2 ≥ 2
Collect like terms
x ≥ 2 – 2
x ≥ 0
0 ≤ x
x + 4 ≤ 3
Collect like terms
x ≤ 3 – 4
x ≤ –1
Combining both answers, we have
0 ≤ x ≤ –1
Expressing the solution in internal notation, we have:
0 ≤ x ≤ –1
[0, –1]
What’s the answer to these
Answer:
B. [tex]\sqrt{16} *\sqrt{4}[/tex]
Step-by-step explanation:
[tex]=\sqrt{16*4}[/tex]
[tex]=\sqrt{64}[/tex]
[tex]=8[/tex]
--------------------
[tex]=\sqrt{16} *\sqrt{4}[/tex]
[tex]=4*2[/tex]
[tex]=8[/tex]
--------------------
Hope this helps.
What is the y-intercept of the line 5x – 3y = - 18?
The following results come from two independent random samples taken of two populations.
Sample 1 Sample 2
n1 = 60 n2 = 35x1 = 13.6 x2 = 11.6σ1 = 2.1 σ2 = 3
a. What is the point estimate of the difference between the two population means?
b. Provide a 90% confidence interval for the difference between the two population means.
c. Provide a 95% confidence interval for the difference between the two population means.
Answer:
[tex](a)\ \bar x_1 - \bar x_2 = 2.0[/tex]
[tex](b)\ CI =(1.0542,2.9458)[/tex]
[tex](c)\ CI = (0.8730,2.1270)[/tex]
Step-by-step explanation:
Given
[tex]n_1 = 60[/tex] [tex]n_2 = 35[/tex]
[tex]\bar x_1 = 13.6[/tex] [tex]\bar x_2 = 11.6[/tex]
[tex]\sigma_1 = 2.1[/tex] [tex]\sigma_2 = 3[/tex]
Solving (a): Point estimate of difference of mean
This is calculated as: [tex]\bar x_1 - \bar x_2[/tex]
[tex]\bar x_1 - \bar x_2 = 13.6 - 11.6[/tex]
[tex]\bar x_1 - \bar x_2 = 2.0[/tex]
Solving (b): 90% confidence interval
We have:
[tex]c = 90\%[/tex]
[tex]c = 0.90[/tex]
Confidence level is: [tex]1 - \alpha[/tex]
[tex]1 - \alpha = c[/tex]
[tex]1 - \alpha = 0.90[/tex]
[tex]\alpha = 0.10[/tex]
Calculate [tex]z_{\alpha/2}[/tex]
[tex]z_{\alpha/2} = z_{0.10/2}[/tex]
[tex]z_{\alpha/2} = z_{0.05}[/tex]
The z score is:
[tex]z_{\alpha/2} = z_{0.05} =1.645[/tex]
The endpoints of the confidence level is:
[tex](\bar x_1 - \bar x_2) \± z_{\alpha/2} * \sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}[/tex]
[tex]2.0 \± 1.645 * \sqrt{\frac{2.1^2}{60}+\frac{3^2}{35}}[/tex]
[tex]2.0 \± 1.645 * \sqrt{\frac{4.41}{60}+\frac{9}{35}}[/tex]
[tex]2.0 \± 1.645 * \sqrt{0.0735+0.2571}[/tex]
[tex]2.0 \± 1.645 * \sqrt{0.3306}[/tex]
[tex]2.0 \± 0.9458[/tex]
Split
[tex](2.0 - 0.9458) \to (2.0 + 0.9458)[/tex]
[tex](1.0542) \to (2.9458)[/tex]
Hence, the 90% confidence interval is:
[tex]CI =(1.0542,2.9458)[/tex]
Solving (c): 95% confidence interval
We have:
[tex]c = 95\%[/tex]
[tex]c = 0.95[/tex]
Confidence level is: [tex]1 - \alpha[/tex]
[tex]1 - \alpha = c[/tex]
[tex]1 - \alpha = 0.95[/tex]
[tex]\alpha = 0.05[/tex]
Calculate [tex]z_{\alpha/2}[/tex]
[tex]z_{\alpha/2} = z_{0.05/2}[/tex]
[tex]z_{\alpha/2} = z_{0.025}[/tex]
The z score is:
[tex]z_{\alpha/2} = z_{0.025} =1.96[/tex]
The endpoints of the confidence level is:
[tex](\bar x_1 - \bar x_2) \± z_{\alpha/2} * \sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}[/tex]
[tex]2.0 \± 1.96 * \sqrt{\frac{2.1^2}{60}+\frac{3^2}{35}}[/tex]
[tex]2.0 \± 1.96* \sqrt{\frac{4.41}{60}+\frac{9}{35}}[/tex]
[tex]2.0 \± 1.96 * \sqrt{0.0735+0.2571}[/tex]
[tex]2.0 \± 1.96* \sqrt{0.3306}[/tex]
[tex]2.0 \± 1.1270[/tex]
Split
[tex](2.0 - 1.1270) \to (2.0 + 1.1270)[/tex]
[tex](0.8730) \to (2.1270)[/tex]
Hence, the 95% confidence interval is:
[tex]CI = (0.8730,2.1270)[/tex]
The amount of time needed to complete a certain roadtrip, t, varies inversely with the speed of a vehicle, s. At a speed of 52 miles per hour, the trip will be complete in 12 hours. How many hours would it take at a speed of 48 miles per hour?
Answer:
The time it will take is 13 hours
Step-by-step explanation:
From the given statement, we can generate the following inverse proportion relationship between t and s
t ∝ 1/s
[tex]t = \frac{k}{s} \\\\where;\\\\k \ is \ constant\\\\k = t_1s_1 = t_2s_2 \\\\t_2 = \frac{t_1s_1}{s_2} \\\\t_2 = \frac{12 \times 52}{48} \\\\t_2 = 13 \ hours[/tex]
The time it will take is 13 hours
7a - 2b = 5a + b
a = 2b
a = 3b
a = a equals StartFraction 3 Over 2 EndFraction b.b
a = a equals StartFraction 2 Over 3 EndFraction b.b
Answer:
iii) a=3b/2
Step-by-step explanation:
7a-2b= 5a+b
7a-5a=2b+b
2a=3b
a=3b/2
I hope this helps!