Answer:
What's the question?
Step-by-step explanation:
If 2 power x= 1, then find the value of x.
Answer:
x = 0
Step-by-step explanation:
2^x = 1
The only way a number can equal one when there's an exponent is when the exponent is 0
x = 0
2^0 = 1
increase 80 in the ratio of 3:2
Answer:
Ratios describe proportions. We can always multiply across ratios, or divide across them (as long as we do it to all of them). For example, the ratio 3 : 2 is the same as 6 : 4 and 300 : 200. Accuracy Tip.
Step-by-step explanation:
40 cricket players and 20 kabaddi players are training on a field. what is the ratio of kabaddi players to the total number of players ?
Answer:
1:3
Step-by-step explanation:
Given thatm
No. of cricket players = 40
No. of kabaddi players = 20
Total no. of players = 40 + 20
= 60
The ratio of kabaddi players to the total number of players is :
R = 20:60
R = 2:6
R = 1:3
Hence, the required ratio is 1:3.
[need math help] Study buddies part #2
Answer:
Part A) The distance between Whitney's house and Anh's house is 6.5 miles.
Part B) The total distance traveled by Whitney during the trip was 9.5 miles.
Step-by-step explanation:
Part A)
Notice that during Whitney's journey to Anh's house, her velocity was negative for some time. So, Whitney was travelling backwards. Hence, the total distance Whitney traveled will be greater than the actual distance from Whitney's house to Anh's.
So, instead, we can calculate Whitney's total displacement. Total displacement is given by:
[tex]\displaystyle \text{Displacement}=\int_a^bv(t)\, dt[/tex]
Where v(t) is the velocity function.
So, the displacement of Whitney when she traveled from her house to Anh's house will be:
[tex]\displaystyle \text{Displacement}=\int_0^{24}v(t)\, dt[/tex]
To calculate the integral, we can split it off at t = 11, t = 16, and t = 24.
The three regions represent three geometric figures, which we can use to calculate the area and then find the integral. Rewriting:
[tex]\displaystyle \text{Displacement}=\int_0^{11}v(t)\, dt+\int_{11}^{16}v(t)\, dt+\int_{16}^{24}v(t)\, dt[/tex]
Now, we can calculate the area of each figure.
The first figure is a trapezoid with a height of 0.8 and two bases of 11 and 3. So, its area is:
[tex]\displaystyle A_1=\frac{1}{2}(0.8)(11+3)=5.6\text{ miles}[/tex]
The second figure is a triangle with a height of 0.6 and a base of 5. So, its area is:
[tex]\displaystyle A_2=\frac{1}{2}(0.6)(5)=1.5\text{ miles}[/tex]
Lastly, the third figure is another triangle will a height of 0.6 and a base of 8. So, its area is:
[tex]\displaystyle A_3=\frac{1}{2}(0.6)(8)=2.4\text{ miles}[/tex]
However, notice that the second figure is below the x-axis. During that interval, Whitney was traveling backwards. Hence, we will subtract the second area from the rest of the areas.
Then the displacement will be:
[tex]\displaystyle \text{Displacement}=5.6-1.5+2.4=6.5\text{ miles}[/tex]
So, the distance between Whitney's house and Anh's house is 6.5 miles.
Part B)
The total distance differs from displacement in that it includes all the distances in both directions. It is given by:
[tex]\displaystyle \text{Distance}=\int_a^b|v(t)|\, dt[/tex]
In other words, all of our values are now positive. We will utilize the same strategy:
[tex]\displaystyle \text{Distance}=\int_0^{11}|v(t)|\, dt+\int_{11}^{16}|v(t)|\, dt+\int_{16}^{24}|v(t)|\, dt[/tex]
Substitute. The only difference is that we will add 1.5 instead of subtracting it. So:
[tex]\displaystyle \text{Distance} =5.6+1.5+2.4=9.5[/tex]
Therefore, in this instance, Whitney traveled a total of 9.5 miles to get to Anh's house.
Enter the equation of the circle with the given center and radius. Center: (−2, −5); radius= 1
Answer:
[tex](x + 2)^2 + (y + 5)^2 = 1[/tex]
Step-by-step explanation:
Equation of a circle:
The equation of a circle with center [tex](x_0,y_0)[/tex] and radius r is given by:
[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]
Center: (−2, −5); radius= 1
This means that [tex]x_0 = -2, y_0 = -5, r = 1[/tex]. So
[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]
[tex](x - (-2))^2 + (y - (-5))^2 = 1^2[/tex]
[tex](x + 2)^2 + (y + 5)^2 = 1[/tex]
This is the equation of the circle.
Find the surface area of the cylinder shown
Answer:
1041.44
Step-by-step explanation:
A=2πrh+2πr^2
=2π6.5×19+2π6.5^2≈1041.43796
find the number of bacteria after 10 minutes?
Answer:
Number of bacteria when t = 10 min is 3,000
Step-by-step explanation:
Given:
Number of bacteria in a culture by equation
Q(t) = 2(729^t)
Value of t = 10 min = 10 / 60 = 0.1667 hour
where t is number of hours
Find:
Number of bacteria when t = 0.1667 hour
Computation:
Given equation
Q(t) = 2(729^t)
Put t = 0.1667
Q(10) = 2(729⁰'¹⁶⁶⁷)
We know that;
a⁰ = 1
So,
Q(0.1667) = 2(729⁰)
Q(0.1667) = 3
Number of bacteria when t = 0 is 3,000
what is a diagonal through the interior of the cube?
Answer:
A cube has 6 faces and on each face there are two diagonals joining nonadjacent vertices and there are 4 diagonals through the interior of the cube. Thus in total there are 6×2+4=16 diagonals in a cube. In this cube, the diagonals through the interior of the cube are. AH, CF, DE and BG.
Step-by-step explanation:
I need help with this question
Answer:
A would be the answer
Step-by-step explanation:
Hope it was helpful .
plz help will give crown
Answer:
w < 7
Step-by-step explanation:
Since the inequality is an OPEN circle, that means the sign is < or >
Since the sign is going to the left that means it's < or ≤
The one that has both of these effects is <
Since the sign starts at 7, the inequality is w < 7
Answer: B. w<7
Step-by-step explanation:
Della has over 500500500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a female artist. She takes an SRS of 505050 songs on her phone and finds that 202020 of the songs sampled are by a female artist. Based on this sample, which of the following is a 99\%99%99, percent confidence interval for the proportion of songs on her phone that are by a female artist?
Answer: 0.40 2.576 √0.40(0.60)
——————
50
Step-by-step explanation:
Put a upside down T which is the Plus-minus sign in between .40 and 2.576
The 99% confidence interval for the proportion of songs on her phone that are by a female artist will be given below. Then the correct option is A.
[tex]0.4 \pm 2.58 \times \dfrac{0.4(1-0.4)}{50}[/tex]
What is a normal distribution?It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.
Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a female artist.
She takes an SRS of 50 songs on her phone and finds that 20 of the songs sampled are by a female artist.
The 99% confidence interval for the proportion of songs on her phone that are by a female artist will be
[tex]\rm x = 20\\\\n = 50 \\\\p = \dfrac{20}{50} = 0.4\\\\z= 99\% \ confidence\ interval = 2.58[/tex]
Then we know that
[tex]p\pm z \times \dfrac{p(1-p)}{n}\\\\0.4 \pm 2.58 \times \dfrac{0.4(1-0.4)}{50}\\\\0.4 \pm 2.58 \times \dfrac{0.4*0.6}{50}\\\\0.4 \pm 0.012384[/tex]
More about the normal distribution link is given below.
https://brainly.com/question/12421652
[need math help] Study buddies part #3
9514 1404 393
Answer:
a) at t=12, Whitney is speeding up
b) 13/48 = 0.2704833 . . . miles/min; not a good measure
Step-by-step explanation:
a) At t=12, Whitney's velocity is -0.2 miles/min and is decreasing. That is, the magnitude of her velocity (speed) is increasing. Whitney is speeding up at t=12.
__
b) The (signed) area under the curve, divided by the time period (24 min) will give Whitney's average velocity. It can be found by using the formulas for area of a trapezoid and triangle.
distance 0-11 = 1/2(11 +3)(0.8) = 5.6 miles
distance 11-16 = 1/2(5)(-0.6) = -1.5 miles
distance 16-24 = 1/2(8)(0.6 = 2.4 miles
Whitney's average velocity is ...
(5.6 -1.5 +2.4)mi/(24 min) = 6.5 mi/(24 min) = (13/48) mi/min ≈ 0.270 mi/min
The laws of physics tell us that no work is being done if velocity is constant. Hence, the strenuousness of Whitney's pedaling depends on the acceleration she is maintaining. The average velocity measure tells nothing of that, so is a poor measure of how strenuously Whitney is pedaling.
What is the main problem with this paragraph
Thesis statement: Stores that resell used video games should offer at least 30 percent of the sale price to sellers.
Main points:
More people will sell used games.
More people will buy new games.
The store will make money.
Conclusion: It just makes sense that happy sellers will sell back more used games They'll also be willing to buy more new games, knowing they can sell them back for a good price. This will all lead to more profit for the store. It is a problem that has a simple solution that will benefit everyone involved.
A. It does not restate the thesis.
B. It does not have a satisfying close.
C. It adds new information.
D. It is missing one of the main points
Answer:
A
Step-by-step explanation:
It never restates the thesis, in which you are required to in anything resembling a formative, constructed response, or an essay.
Select all the expressions that are the result of decreasing x by 80%
Please use the photo, also please don't give me a file cause I know it's a virus
Answer:
A,B,E or 1,2,5
if its letters or numbers.
Step-by-step explanat
The expressions that are the result of decreasing x by 80% will be (1 - 0.80)x, x - (80/100)x, and (20/100)x. Then the correct options are A, C, and E.
What is the percentage?The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.
The expressions that are the result of decreasing x by 80%.
We know that if something is decreased by a percentage p% then the percentage is written as (1 - p%). Then the expression is written as,
⇒ [(100 - 80) / 100]x
Then the expression can be written as,
⇒ [(100 - 80) / 100]x
⇒ x - (80/100)x
⇒ x - 0.80x
⇒ (1 - 0.80)x
⇒ 0.20x
⇒ (20/100)x
The expressions that are the result of decreasing x by 80% will be (1 - 0.80)x, x - (80/100)x, and (20/100)x. Then the correct options are A, C, and E.
More about the percentage link is given below.
https://brainly.com/question/8011401
#SPJ2
Help for answers and 1-8 answers and show how u got it ASAP tysm 14points
Answer:
find common denominators
1. 19/15 or 1 4/15
2. 5/12
3. 29/24 or 1 5/24
4.1/6
5. 19/30
6. 13/18
7. 31/24 or 1 7/24
8. 11/20
List all the ways to select two members from S with repetition. The order in which the members are selected is not important. For example, DD is allowed and BA is the same selection as AB.
S = (K,L,M,N,P)
Identify the list of all the ways to select two members from S, allowing for repetition.
9514 1404 393
Answer:
KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP
Step-by-step explanation:
Instead of starting with adjacent letters in the list, we start with the same letter. There are 15 possible pairs.
KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP
__
Additional comment
We leave out pairs with letters previous, because you've said KL is the same as LK, and KL has already been listed. The problem with this list is that it misstates the probabilities of randomly obtaining a given pair. It is not 1/15, but is 2/25 for all but letter duplicates. For duplicates (KK), the probability is 1/25, not 1/15.
three of the exterior angles of an n sided polygon are 50° each, two of its exterior angles are 127°and 135° and the remaining interior angles are 173°each. find the value of n
Answer:
i think there is something wrong with this problem
Step-by-step explanation:
maximum sum of all exterior angles is 360°
3(50°) = 150
150° + 127° + 135° = 412°
PLEASE HELP ME!!! AND PLEASE TELL ME THE CORECT ANSWER. THIS WILL BE WORTH 20 POINTS!!!
Answer:
45units²
Step-by-step explanation:
Triangle area = (1/2)(base length)(perpendicular height)
= (1/2)(6)(15)
=3(15)
=45units²
A pair of dice is rolled. Find the probability of rolling a sum not less than 11
Answer:
dos dados con seis o un dado con 5 y otro con 6
Step-by-step explanation:
Answer:
1/12
Step-by-step explanation:
0_____________________________________0
The face says brainliest please!
18. How many kilograms are in 21,500 grams?
Answer:
0,0215
Step-by-step explanation:
The owner of Lakewood Mall wants to know the number of people who shop at the mall more than once a week. He surveys 9696 customers and finds that 2424 of them shop at the mall more than once a week. What is the probability that the next person he surveys shops at the mall more than once a week?
Answer:
go make me a sandwhich you witch
Step-by-step explanation:
A construction worker earned $64 in a week. If he worked eight hours in one week, how much money did he earn per hour?
Answer:
X=8
Step-by-step explanation:
64 Divided by Eight equals Eight.
Because he worked eight hours that week and earned $64 so divide that up by eight then you got your answer.
A tree in Tom's backyard grows 0.6 meters each month. If the tree is 2.82 meters tall, for how many months has the tree been growing?
Answer:
4.7months
Step-by-step explanation:
2.82÷0.6 = 4.7
Which would be the best method to use to solve the following equation. Explain your reasoning.
Methods:
Factoring
Square root Property
Completing the Square
Quadratic Formula
1. 3x^2 - 192 = 0
Method:
Why:
Answer:
x = ±8
Step-by-step explanation:
The given equation is :
[tex]3x^2-192=0[/tex]
We can use the Square root Property to solve it.
Adding 192 both sides,
[tex]3x^2-192=0\\\\3x^2=192[/tex]
Dividing both sides by 3.
[tex]x^2=64\\\\x=\sqrt{64} \\\\x=\pm 8[/tex]
So, the value of x is equal to +8 and -8.
the probabilities that amy and tess will arrive at party on time are 2/3 and 3/4 respectively. Find the probability that a. amy will arrive on time while tess is not
Answer:
1/6
Step-by-step explanation:
Probability that any arrives on time = 2/3
Probability that teaa arrives on time = 3/4
Probability that teas will not arrive in time = 1 - P(tess arrives on time) = 1 - 3/4 = 1/4
Hence,
The probability that Amy arrives in time and tess does not equals
2/3 * 1/4 = (2*1) / (3*4) = 2 / 12 = 1/6
Using it's concept, it is found that there is a 0.1667 = 16.67% probability that Amy will arrive on time while Tess will not.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem:
The probability that Amy arrives on time is of 2/3.The probability that Tess does not arrive on time is of 1/4.Since they are independent, we multiply them, hence:
[tex]P = \frac{2}{3} \times \frac{1}{4} = \frac{2}{12} = 0.1667[/tex]
0.1667 = 16.67% probability that Amy will arrive on time while Tess will not.
More can be learned about probabilities at https://brainly.com/question/14398287
Helpp me plzzzzzzz
Explain how the following two formulas are the same:
Volume = b x h
Volume = l x w x h
Answer:
they are the same because lxw is the b so all you need to do is bxh
Step-by-step explanation:
what is the equation of the line?
Answer:
it is D ithought sinse for x=0 y=0 and for x=4 y=-2 (-1/2 x4 =-2 )and others didnot give correct nbs
The question is in Spanish though
Answer:
The total will be 200, I agree to this person bc i did the math, and he or she is correct
Step-by-step explanation:
Which is an equation in terms of x and y for this function? graph of a function is a line that passes through the coordinates (2, 11) and (8, 14).
Answer:
y = 1/2x + 10
Step-by-step explanation:
I'm not sure if this is right but:
First you work out the gradient of the line which is the difference in y divided by the difference in x:
Gradient = (14 - 11) ÷ (8 - 2) = 3 ÷ 6 = 1/2
the gradient is 1/2 so you'd write that as: y= 1/2x + c
Then you need to work out the y-intercept ( c )
You do this by substitution:
14 = 1/2(8) + c
14 = 4 + c
c = 10
So the y-intercept is 10 so you'd write that as:
y = 1/2x + 10
which of the following equations would contain the point (4,12) A. y=3/4x+6 B. y=-1/2x-14 C. y=1/2x+10 D. y=-2x+4
