Answer:
[tex]Pr = 0.140625[/tex]
Step-by-step explanation:
Given
[tex]n = 5[/tex] --- questions
[tex]options = 4[/tex] ---- a, b, c or d
Required
The probability that 1st correct question is the 3rd
The probability of selecting the right answer is:
[tex]p = \frac{1}{options}[/tex]
[tex]p = \frac{1}{4}[/tex]
[tex]p = 0.25[/tex]
Using complements, we have:
[tex]q = 1-p[/tex]
[tex]q = 1-0.25[/tex]
[tex]q = 0.75[/tex] --- probability of selecting the wrong answer
The required probability is represented as:
Pr = First is wrong * Second is wrong * Third is correct
[tex]Pr = q * q * p[/tex]
This gives
[tex]Pr = 0.75 * 0.75 * 0.25[/tex]
[tex]Pr = 0.140625[/tex]
Jeff can build 7 birdhouses in 5 hours. Use a
proportion to find out how long it would take
him to build 30 birdhouses. (Round answer to
nearest whole number)
Answer:
21 hours
Step-by-step explanation:
We can use a ratio to solve
7 houses 30 houses
------------- = --------------
5 hours x hours
Using cross products
7x = 5*30
7x = 150
Divide by 7
7x/7 =150/7
x =21.42857143
Rounding to the nearest whole number
x = 21 hours
What is distributive property in math?
Answer:
The distributive property is one of the most frequently used properties in math. The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.
distributive property is multiplying a number by a sum is the same as doing each multiplication separately.
for example: 2 (4 + 3 )
2 x 4 = 8
2 x 3=6
8+6=14
Please help it’s not hard
Answer:
H
Step-by-step explanation:
y= (1)x-3
Positive gradient, and the y intercept for the graph is -3, F is not the answer, the Y intercept is not -3.
I need help finding the answer. Would appreciate some help
Answer:
a = 153.5 yd²
Step-by-step explanation:
horizontally divide the figure into a tringle and a trapezoid
triangle
a = (1/2)bh
a = (1/2)(19)(7)
a = 66.5
trapezoid
a = (b₁ + b₂)/2 * h
a = (19 + 10)/2 * (13 - 7)
a = 87
Combined
a = 66.5 + 87
a = 153.5
In a math class with 26 students a test was given the same day that an assignment was due. There were 17 students who passed the test and 18 students who completed the assignment. There were 15 students who passed the test and also completed the assignment. What is the probability that a student who failed the test completed the homework?
Answer:
3/26 is the answer........
please help me solve this
Answer:
(0, 3), (4, -5)Step-by-step explanation:
y = x² - 6x + 3y = -2x + 3Solve by substitution:
x² - 6x + 3 = -2x + 3x² - 4x = 0x(x - 4) = 0x = 0 ⇒ y = -2*0 + 3 = 3x = 4 ⇒ y = -2*4 + 3 = -5Please can someone help me out
Answer:
380.1
Step-by-step explanation:
Area = 22/7 × 11 × 11 =380.3
what is the actual standard deviation for 68,68,68,68,68 133,133,133,133,133,
Answer: 21380.573997076
Step-by-step explanation:
The triangles shown below may not be congruent.
25
56
100
1000
850
O A. True
O B. False
Answer:
B. False
Step-by-step explanation:
The two triangles have the same size and the same shape so they are congruent. The three angles on both the triangles are equal. Just that the triangles are upside down but they are all the same.
I am desperate please help.
Answer:
63.69 meters
Step-by-step explanation:
the total perimeter of two identical semi-circular = 100+100 = 200m
d = p/π = 200/3.14 = 63.69
Express 240g as a percentage of 2.5kg
Answer:
0.1%
Step-by-step explanation:
Given that 240 g of 2.5 kg
We have to express this in percentage
But we know that 1 kg = 1000 g, So first convert 2.5 kg to g
2.5 kg = 2.5 x 1000 g = 2500 g
The formula of "a" % of "b" is given as:
[tex]percentage= \frac{a}{b}[/tex] × 100
Hence, 240 g as a percentage of 2500 g is given as:
[tex]= \frac{250}{2500}[/tex] × [tex]100[/tex]
= [tex]\frac{1}{10}[/tex] = 0.1
Thus, the answer is 0.1 %
In a group of 55 examinees taking the 50-item test, Rachel obtained the score of 38. This implies that her score is...
Answer:
she scored 76 percent in the test
how do i solve this problem
Answer:
5 sqrt(2) =x
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hypotenuse
sin 45 = x / 10
10 sin 45 = x
10 ( sqrt(2)/2) =x
5 sqrt(2) =x
Plzzz help I don’t have a lot of time
Answer:
7
Step-by-step explanation:
It’s a right angle, so you can add the two expressions togther to get 90, then isolate x.
(8r-6)+(5r+5)=90
13r-1=90 (combine like terms)
13r-1+1=90+1 (add 1, addition property of equality)
13r=91
13r/13=91/13
r=7
what that two numbers when multiplied give 600 and when added give 59
Answer:
Step-by-step explanation:
Let the 2 numbers be x and y
From the problem we have that
x * y = 600 and x + y = 59
From x + y = 59 -> x = 59 - y
Plug x = 59 - y to x * y = 600 we have
(59 - y) * y = 600
-> 59y - y^2 = 600
-> -y^2 + 59y - 600 = 0
-> y = [tex](59 - \sqrt{1081})/2[/tex] or [tex](59 + \sqrt{1081})/2[/tex]
Then we could plug the answers in and find x because x = 59 - y
HELP ASAP.
Questions are shown in the image, please include the procedure and explanation.
Answer:
1. 1) 1
2. 4) (-4,8)
3. 2) (2,-8)
4. (6, -4)
5. (4, 12)
6. (-8, 6)
7. (6, -4)
8. 2) (12,0)
9. 2) similar but not congruent.
10. (12, 24)
Step-by-step explanation:
An isometry preserves the orientation of a shape. In other words, nothing will change.
In dilations, a scale factor is how many times the preimage will be increased by. In other words, this is what you multiply the x and y-coordinates by.
For example, in question 4, the image has a dilation of 2.
[tex]3*2=6.[/tex]
[tex]-2*2=-4.[/tex]
(3, -2) ⇒ (6, -4).
The sky ride at an amusement park spans 2,715 feet. Over the course of the day,
Anna rode the sky ride 7 times. How many feet did she ride?
A. 14,025 feet
B. 15,500 feet
C. 19,005 feet
D. 21,000 feet
Whoever answers this then there gonna get Branliest
Answer:
C. 19,005 feet
Step-by-step explanation:
[tex] \begin{array}{ccc} \rm 1 \: time \: ride \implies \: 2175 \: feet\\ \rm 7 \: times \: ride \implies 2175 \times 7 = 19005 \: feet\end{array}[/tex]
hence,
our answer is C)
Answer:
Solution given:
1times ride[tex]\rightarrow: [/tex]2715ft
7 times ride[tex]\rightarrow:[/tex]2715*7=19005ft
Option C 15,500 feet
Can someone help asap!!?
Answer:
1: B. 2: 6n^6+9n^5+4n^2-4n. 3: D. 4: 6b^2-15b-9. 5: 48x^2-4x-4
Step-by-step explanation:
1.
A trinomial is a polynomial with three terms. The expression 7v^2 +2v +2 has 3 terms.
2.
A polynomial in standard form has its powers listed from highest power to lowest power. The terms are 6n^6, 4n^2, 9n^5, and -4n. Remove the bottom numbers to find 6, 2, 5, and 1. Next, put them in order. 6, 5, 3, 1. Then, re-add the bottom numbers. 6n^6+9n^5+4n^2-4n.
3. A sixth degree polynomial is one with a sixth degree power. So, the answer is either C or D. Next, let's look at the terms. The expression here has 4 terms. So, the answer is D.
4 and 5:
To solve expressions in this form, (a+b)(c+d), turn the expression into an equivalent one, ac+ad+bc+bd. Plug in the numbers (with a negative mark if its -a or a-b) into that expression to get your answer.
4 simplifies out into 6b^2+3b-18b-9, which can be simplified into 6b^2-15b-9
5 simplifies out into 48x^2+12x-16x-4, which can be simplified into 48x^2-4x-4.
Please I need help in finding the diameter
Answer:
im pretty sure its 152, im sorry if im wrong, i took 180 and subtracted 180 - 16 - 12 and got that soooo
Step-by-step explanation:
What is g(x)?
A g(x)=-x2
B g(x)=-2x
C g(x)= -x
D g(x)= -|x|
Answer:
Should be A
Hope this helped!
Which sequence is an example of an arithmetic sequence? A) –8, –4, –2, –1, . . . B) –4, –2, 0, 2, 4, . . . C) –1, –7, –49, –343, . . . D) 2, 4, 8, 16, 32, . . .
i dont have the membership.
Answer:
Answer- D)2,4,8,16,32, . . .
Answer:
b. -4,-2,0,2,4,...
Step-by-step explanation:
1. The freezing point of water varies directly with the salt content of the water. Fresh water (no salt content) freezes at a temperature of 0°C. Ocean water has a salt content of 3.5% and freezes at -2°C. Identify the independent and dependent variables. Explain your choices.
Answer:
well its -3
Step-by-step explanation:
i did the work
Which algebraic expression has a term with a coefficient of 9? O A. 6(x + 5) O B. 6x - 9 O C. 6+ x - 9 O D. 9x=6
Answer:
D is the answer to your question
ILL GIVE YOU BRAINLIEST IF YOU GET IT RIGHT AND EXPLAIN
A special effects engineer is designing a model of an airplane for some shots in a movie.The wingspan of the model is 8.4 meters wide as shown below. If the scale used to create the model was 1/4 the actual wingspan; what was the true wingspan of the oringal plane?
Answer:
33.6 meters
Step-by-step explanation:
the wingspan is 1/4 of the original size so all you need to do is multiply the scaled down wingspan by 4
help me plz i really need it
Answer:
all lengths of Andrew's copy must be twice as large as the Jada's original
all angles need to be the same.
I don't see the original anywhere, but I hope the instructions will help you
Answer:
https://access.openupresources.org/curricula/our6-8math/en/grade-7/unit-1/lesson-3/index.html
Step-by-step explanation:
Should answer all your questions. This is a reliable link. No viruses I use this site.
What amount of simple interest would you pay on a 2000 loan at 8% interest for 3 years
Answer:
480 is right answer of the question
11% of the animals at an animal shelter are dogs. About what fraction of the animals at the shelter are dogs?
HELPPPP
Answer:
0.11
Step-by-step explanation:
Write down the percent divided by 100 like this:percent 100
Then if the percent is not a whole number then multiply both top and bottom by 10 for ever
Multiple Select
Although there are many more, choose THREE reasons the U.S. government is strongly encouraging Sl to be used at all levels of
education.
students educated to use the metric system will be able to excel in the global marketplace
using the metric system helps students be more creative
the mandatory conversion from U.S. measurements to metric is official in 2020
the metric system is simpler for students to learn
education in math and science will become more efficient
Answer:
watts
Step-by-step explanation:
Answers:
students educated to use the metric system will be able to excel in the global marketplaceeducation in math and science will become more efficientthe metric system is simpler for students to learnUse the data in the table to complete the sentence. x y –2 7 –1 6 0 5 1 4 The function has an average rate of change of __________.
Answer: -1
Step-by-step explanation:
Just took the test
,and the equation is y=-1x+5, so the change of x is -1
Answer:
The answer is -1
Step-by-step explanation:
What is the solution of the equation, 8y = 4?
A. y = 1/2
B. y = 2
c. y = 12
D. y = 32
Answer: A, which is y = 1/2
Step-by-step explanation: To find the value of y, you would need to divide both of the sides by 8. This makes it so that 8y turns into just y. After you do this, you would find an answer of y = 1/2. Hope this was helpful! :)
Answer:
y = 1/2
Step-by-step explanation:
8y = 4
Divide each side by 8
8y/8 = 4/8
y = 1/2
