Answer:
I don't have a clue and :3 is your 1st-period teacher named Mrs. SIKE I AINT GONNA EXPOSE MY DEAR TEACHA NAME!!
Step-by-step explanation:
Help pleaseeee I’m in need
* Which value can you use for n to show that the
first step in a proof by mathematical induction of
"For all the positive integers n
1^2+2^2+...+n^2?
n(n+1) (2n+1)" /6 is true?
A-n=1/4
B- n=1
C- n=3.26
D- n=-10.1
Answer:
B- n = 1
Step-by-step explanation:
"For all the positive integers n" is a qualifying statement. The number used has to be positive and also must be an integer. Integers are whole numbers and their opposites, so basically no fractions and no decimals. Answer A is a fraction and C is a decimal and D is negative and a decimal. So they don't work for this problem.
The value is n to show that the first step in a proof by mathematical induction of for all the positive integers is 1.
Thus, option B is correct.
The conditions can be checked through the options.
The option C and D will be eliminated because the condition is for all the positive integers n but n is decimal here.
For n = 1/4, the solution will be in fractions.
So, it does not hold true for n= 1/4.
For n = 1
[tex]\dfrac{n(n + 1)(2n + 1)}{6}[/tex]
=[tex]\dfrac{1(1 + 1)(2 \times 1 + 1)}{6}[/tex]
= 1
Thus, the value is n to show that the first step in a proof by mathematical induction of for all the positive integers n is 1.
So, option B is correct.
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2 Sami made 27 phone calls in 12 days. Marta made 45 phone calls in 18 days. a Work out the mean number of calls per day for each person. b Who made more calls per day?
The mean number of calls for Sami is 2.25 calls per day and for Marta it is 2.5 calls per day
The person who made more calls per day is Marta.
What is the mean?Mean is the average of a set of numbers. It is determined by adding the numbers together and dividing it by the total number
Mean = sum of the numbers / total number
Sami = 27 / 12 = 2.25 calls per day
Marta = 45 / 18 = 2.5 calls per day
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You start driving west for 3 miles, turn right, and drive north fer another 13 miles. At
the end of driving, what is your straight line distance from your starting point?
Round to the nearest tenth of a mile.
Answer:
13.3 miles
Step-by-step explanation:
So you're driving <----- for 3 miles
Then you start driving up for 13 miles
This makes a right triangle with sides of 3 and 13
using pathagoreas, a^2+b^2=c^2
3^2+13^2=c^2
9+169=c^2
178=c^2
Square root both sides
c= 13.3416640641
Rounding, it's 13.3 miles
can u help me solve c=q v+q for v
Answer:
V = c/q - 1
Step-by-step explanation:
hope this helps if u need anymore help let me know
Find the x-intercept of h(x)= |x| + 4
Answer:
(-4,0)
Step-by-step explanation:
if you substitute the number 0 then it is (-4,0). and there is your answer!
Please help with solution needed!!
Answer:
42,640
Step-by-step explanation:
[tex]205 \times 208 = (200 + 5)(200 + 8) \\ formula \: to \: be \: used \: \\ \red{ \boxed{ \bold{(x + a)(x + b) = {x}^{2} + (a + b)x + ab}}} \\ \\ \implies \: 205 \times 208 \\ \\ = (200 + 5)(200 + 8) \\ \\ = {(200)}^{2} + (5 + 8)(200) + (5)(8) \\ \\ = 40000 + (13)(200) + 40 \\ \\ = 40000 + 2600 + 40 \\ \\ = 42,640[/tex]
Which statement shows how the product of (x 5)2 demonstrates the closure property of multiplication? x2 25 is a polynomial x2 25 may or may not be a polynomial x2 10x 25 is a polynomial x2 10x 25 may or may not be a polynomial.
Product of two polynomials can be done by distribution of multiplication over addition. The product of [tex](x+5)^2[/tex] is [tex]x^2 + 10x + 25[/tex]
What is distributive property of multiplication over addition?Suppose a, b and c are three numbers. Then we have:
[tex]a(b + c) = a\times b + a\times c[/tex]
(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)
What is a polynomial?They are mathematical expressions involving variables raised with non negative integers and coefficients(constants who are in multiplication with those variables) and constants with only operations of addition, subtraction, multiplication and non negative exponentiation of variables involved.
Example:
[tex]x^3 + 4x + 3[/tex]
is a polynomial.
Using both above facts, as the given expression is [tex](x+5)^2[/tex]
Its product result is obtained as
[tex](x+5)^2 = (x+5)(x+5) = x(x+5) + 5(x+5) = x^{1+1} + 5x + 5x + 25\\\\(x+5)^2 = x^2 + (5+5)x + 25 \text{\:(Addition of coefficients of like terms)}\\\\(x+5)^2 = x^2 + 10x + 25[/tex]
It is a fact that result of a polynomial product is polynomial. Thus, the obtained product is a polynomial since x + 5 was a polynomial.
Thus,
The product of [tex](x+5)^2[/tex] is [tex]x^2 + 10x + 25[/tex]
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after spending $5 on ice cream, payton had $20 left. how much money did payton have to begin with
Answer: The answer is 25
Step-by-step explanation: because it said he spend $5 on ice cream then he had $20 left so that mean he had 25 - 5 = 20
What is 5 1/2 as a fraction
Answer:
11/2
Step-by-step explanation:
Given Mixed fraction is 51/2
Step 1: Multiply 5 by 2: 5 × 2 = 10
Step 2: Add 10 with 1: 10+1 = 11 (New numerator value).
Hence, the improper fraction is 11/2.
11/2 is 5 1/2 as a fraction.
What is mixed fractions?Mixed fraction is a number contain whole number and a proper fraction.
Given:
Mixed fraction is 5 1/2
To convert mixed fraction into proper fraction:
To get the fraction from mixed number you just need to take the number standing alone, multiply with the denominator and add with the numerator and keep it on top with the denominator in place to turn it into a fraction.
Step 1: Multiply 5 by 2: 5 × 2 = 10
Step 2: Add 10 with 1: 10+1 = 11 (New numerator value).
Proper fraction is 11/2.
Therefore, 11/2 is 5 1/2 as a fractions.
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can you answer this?
Multiply 79 liters 42 millilitres by 4 =
Answer:
316.168
Step-by-step explanation:
you get 316.168 Liters or 316168 mL
please mark brainliest i need one more!
Answer:
316.168
Step-by-step explanation:
that is the answer when i tried this equation
Marvin wrote a decimal on the whiteboard. The value of the 6 in Marvin’s decimal is equal to 1/10 of 0.06. Which of the following numbers could be Marvin’s decimal?
A) 63.576
B) 63.657
C) 63.679
D) 63.960
READ: Please leave a reasoning/explanation. You don't need to give a full paragraph of your explanation
Answer:
A) 63.576
Step-by-step explanation:
1/10 can also be 10/100 which is 10%
10% of 0.06 = 0.006
A teacher simulated her students’ scores on a biology test using 200 trials. The results are shown in the table.
Based on the data from the simulation, what is the probability of students’ scores falling between 80 and 99?
Scores 50-59 60-69 70-79 80-89 90-99
Frequency 13 25 69 58 35
A. 0.535
B. 0.350
C. 0.465
D. 0.580
Given cos 0 = 11/6 and angle 0 is in Quadrant I, what is the exact value of sin 0 in
simplest form? Simplify all radicals if needed.
1 = sin²0 + cos²0
sin²0 = 1 - cos²0
sin²0 = 1 - 11/36
sin²0 = 25/36
sin 0 = 5/6 or -5/6
In the first quadrant, the values for sin, cos and tan are positive.
sin0 = 5/6
Angles A and B are supplementary. Angle A measures (2x + 20).Angle B measures 130 degrees. Solve for X
Answer:
x = 15
Step-by-step explanation:
Supplementary = 180 °
Add the numbers
[tex](2x + 20) + 130 = 180[/tex]
[tex]2x + 150 = 180[/tex]
Subtract 150 from both sides of the equation
[tex]2x+150- 150 =180 - 150[/tex]
Simplify
[tex]2x = 30[/tex]
Divide both sides of the equation by the same term
[tex]\frac{2x}{2} =\frac{30}{2}[/tex]
Simplify/Solution =
[tex]x=15[/tex]
Hence, x = 15.
[RevyBreeze]
Use the order of operations to simplify + 8(2.5 – 0.5).
-
O A. 4
O B. 20
O c. 2
O D. 164
[tex] \dashrightarrow \tt8(2.5 – 0.5)[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt8(3)[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt8 \times 3[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt24[/tex]
Answer:
16
Step-by-step explanation:
I think the question is either incorrect or a number is being omitted in the options.
But, lets make do with what we have here so you have an idea of how its been solved.
USING THE ORDER OF OPERATIONS IS BEING FOLLOWED SO THAT EVERYONE CAN ARRIVE AT THE SAME ANSWER.
8(2.5 - 0.5) = 8 (2) = 16
Aforest that is populated by crows and doves currently contains a total of 1,500 crow and dove
nests. Crows use approximately 8 grams of twigs when building a nest, and doves use
approximately 6 grams of twigs when building a nest. Which of the following equations best
approximates the relationship between C, the total amount, in grams, of twigs used for crow
nests and D, the total amount, in grams, of twigs used for dove nests?
The equation that show the relationship is given by 8x + 6y = C + D
Equation
An equation is an expression used to show the relationship between two or more numbers and variables.
Let x represent the number of Crows and y represent the number of doves, Let C represent the number of trigs needed for Crow and D the amount of twigs needed for dove, hence:
x + y = 1500 (1)
also:
8x + 6y = C + D (2)
The equation that show the relationship is given by 8x + 6y = C + D
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You have 128 eggs and 72 strips bacon, what is ratio of eaggs to bacon?
Answer:
16:9
Step-by-step explanation:
A radio tower is located on a coordinate system measured in miles. The range of a signal in a particular direction is modeled by a quadratic function where the boundary of the signal starts at the vertex at (4, 2). It passes through the point (5, 4). A linear road connects points (–3, 7) and (8, 2). Which system of equations can be used to determine whether the road intersects the boundary of the tower’s signal? StartLayout Enlarged Left-Brace 1st Row y minus 2 (x minus 4) squared = 2 2nd Row 5 x 11 y = 62 EndLayout StartLayout Enlarged Left-Brace 1st Row y minus (x minus 4) squared = 2 2nd Row 5 x 11 y = 62 EndLayout StartLayout Enlarged Left-Brace 1st Row y minus (x minus 4) squared = 2 2nd Row 11 x 5 y = 2 EndLayout StartLayout Enlarged Left-Brace 1st Row y minus 2 (x minus 4) squared = 2 2nd Row 11 x 5 y = 2 EndLayout.
The system of equations that can be used to determine whether the road intersects the boundary of the tower’s signal is
[tex]y = 2x^2 - 16x + 34\\11y = -5x + 62[/tex]
What is vertex form of a quadratic equation?If a quadratic equation is written in the form
[tex]y=a(x-h)^2 + k[/tex]
then it is called to be in vertex form. It is called so because when you plot this equation's graph, you will see vertex point(peak point) is on (h,k)
For the given situation, the quadratic equation has vertex (h,k) = (4,2) and it passes through (5,4).
If we consider the equation to be of the form [tex]y=a(x-h)^2 + k[/tex],
then, as h = 4, k = 2, it becomes [tex]y = a(x-4)^2 + 2[/tex]
Now since it passes through (5,4), thus at x = 5, and y = 4, the equation must be true, or:
[tex]y = a(x-4)^2 + 2|_{(x,y) = (5,4)}\\\\4 = a(5-4)^2 + 2\\4 = a + 2\\a = 2[/tex]
Thus, the quadratic equation in consideration is: [tex]y = 2(x-4)^2 + 2 = 2x^2 + 32 -16x + 2\\y = 2x^2 - 16x + 34[/tex]
The straight line in consideration connects points (–3, 7) and (8, 2).
Equation of a line passing through two points [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] is
[tex](y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)[/tex]
Since we've got [tex](x_1, y_1) = (-3,7) \: \rm and \: \: (x_2, y_2) = (8,2)[/tex]
We get the equation of the straight line in consideration as:
[tex](y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)\\\\(y-7) = \dfrac{2-7}{8 - (-3) } (x-(-3))\\\\y - 7 = -\dfrac{5}{11}(x+3)\\\\11y = -5x + 62[/tex]
Therefore, the system of equations that can be used to determine whether the road intersects the boundary of the tower’s signal is
[tex]y = 2x^2 - 16x + 34\\11y = -5x + 62[/tex]
These equations' graphs' intersection is the solution to this system
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Answer:
y-2(x-4)^2=2
5x+11y=62
Step-by-step explanation:
a on edge 22
The cost of car repair includes labor and parts. Labor is 70% of the total cost. The cost of labor for a certain repair is $406. What is the total cost of the car repair?
Answer:
Your answer is 580
Step-by-step explanation:
What is the measure of x
Answer:
156°
Step-by-step explanation:
the total internal angle of a triangle in 180°
so,
180 - (85 + 71)
= 24°
this is the internal angle, to find the external angle subtract this value from 180
so,
180 - 24
= 156° (answer)
Jemma surveyed the students at her school to find out if they like the beach and/or the mountains for vacation. The table below shows the results of the survey: Like Beach Do Not Like Beach Total Like Mountains 36 28 64 Do Not Like Mountains 56 38 94 Total 92 66 158 If a student does not like the mountains, what is the probability that student also does not like the beach? 39. 1% 40. 4% 59. 5% 60. 8%.
Probability of an event is its chance of . The probability that a student not liking mountains doesn't like beach is: Option b: 40.4%
How to calculate the probability of an event?Suppose that there are finite elementary events in the sample space of the considered experiment, and all are equally likely.
Then, suppose we want to find the probability of an event E.
Then, its probability is given as
[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text{Number of total cases}}[/tex]
Where favorable cases are those elementary events who belong to E, and total cases are the size of the sample space.
For the given case, from the table (image attached below), we can see that, there are total 94 students who do not like mountains. Now, out of those 94, there are 38 students not liking beach.
Thus, if A = a student not liking beach
B = not liking mountains,
Then ,
P(A|B) = P(A ∩ B)/P(B) = [tex]\dfrac{38/158}{94/158} = \dfrac{38}{94} \approx 0.404 = 40.4\%[/tex]
Thus, probability of a student not liking beach given that that student doesn't like mountains is 40.4% approx.
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Answer:
40.4%
Step-by-step explanation:
Find the slope.
Find the slope
Answer:
-x + 1 __________________________
Answer:
-1
Step-by-step explanation:
The slope is the change in y over the change in x. In this graph, the y-value decreases by 1 unit to the right, and the x-value increases by 1 unit. So, this means that the slope is represented as -1/1. This can then be rewritten as -1.
We know that this slope is negative because it decreases to the right. Positive slopes increase to the right.
1/2 s a termating ecimal
Hey there!
1/2
= 1 ÷ 2
= 0.50
≈ 0.5
≈ 50%
Thus, 1/2 is most likely a: terminating decimal
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Solve for x and y 60° 15°
Answer:
y = 4x hope this Helps!
Step-by-step explanation:
y = kx
k = y/x = 60/15 = 4
y = 4x
Please help!! With solution needed!!
Answer:
There are [tex]3p^2[/tex] animals on the farm
Step-by-step explanation:
2p^2-p+4 . p^2+p+1
[tex](2p^2-p+4)+(p^2+p+1)\\2p^2+p^2+p-p+4+1\\3p^2+5[/tex]
Answer:
3p² + 5
Step-by-step explanation:
since no equations are given I will simply add on the number of cows and buffaloes.
total number of animal= number of cows + number of buffaloes
= 2p²- p + 4 + p² + p + 1
= 3p² +5
HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: Cos(33/65) or 0.99996
Step-by-step explanation:
Cos of an angle is described as
Cosine = adjacent / hypotenuse
where adjacent is the closest side to the angle so in this case adjacent is IH
Hypotenuse is the longest side of a right triangle ALWAYS
sooooo Cosine of angle h is cos(33/65) or decimal form 0.99996
HURRYY!!!!
An oil company fills 1 over 10 of a tank in 1 over 5 hour. At this rate, which expression can be used to determine how long will it take for the tank to fill completely?
1 over 5 ⋅ 10 hours
1 over 10 ⋅ 5 hours
1 over 5 ⋅ 1 over 10 hours
5 ⋅ 10 hours
Answer:
I believe the answer is the 3rd one
Step-by-step explanation:
Which of the following is most likely the next step in the series?
O
n
It should be d
Sorry if this is not correct
HELPPPP PLEASE SHOW YOUR WORK
Answer:
Step-by-step explanation:
m∠A = arctan [tex]\frac{9.6}{7.2}[/tex] ≈ 53°