Answer:
x+8
Step-by-step explanation:
4x-3x=x
5-(-3)=8 or 5+3=8
Reason its adding is because a - times a - equals a positive
A tourist traveled 10 km away from the city by bus, and then continued his journey by foot in the same direction at the speed of 5 km/h. At which distance y was he from the city in x hours of walking?
Answer:
y = 10 + 5x
Step-by-step explanation:
We are told he travelled 10 km away from the city by bus.
Now, after that he walked by foot in the same direction at the speed of 5 km/h.
Now, distance = speed x time
In x hours, distance he will have walked by foot = 5x
Which means total distance he has covered both by bus and walking by foot = 10 + 5x
We are told y is the distance from the city after x hours of walking.
Thus;. y = 10 + 5x
Jack is counting days in his calendar by shading the
block that represents each passing day. According to
Jack's calendar, how much time is shaded? Assume
that 7 days equals 1 whole week. Check all that apply.
Answer:
i assume that 2. is the right answer
Step-by-step explanation:
Translate and solve: 1310 is what percent of 524?
In a study of 479,908 cell phone users, it was found that 213 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000462 probability of a person developing cancer of the brain or nervous system. We therefore expect about 222 cases of such cancer in a group of 479,908 people. Estimate the probability of 213 or fewer cases of such cancer in a group of 479,908 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system?
Answer:
The probability of 213 or fewer cases of such cancer in a group of 479,908 people is 0.2776.
Step-by-step explanation:
We are given that assuming that cell phones have no effect, there is a 0.000462 probability of a person developing cancer of the brain or nervous system. We, therefore, expect about 222 cases of such cancer in a group of 479,908 people.
Let [tex]\hat p[/tex] = sample probability of a person developing cancer of the brain or nervous system.
The z-score probability distribution for the sample proportion is given by;
Z = [tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex] ~ N(0,1)
where, p = population probability of a person developing cancer of the brain or nervous system = 0.000462
n = sample of cell phone users = 479,908
Now, the probability of 213 or fewer cases of such cancer in a group of 479,908 people is given by = P([tex]\hat p[/tex] [tex]\leq[/tex] [tex]\frac{213}{479,908}[/tex] )
P([tex]\hat p[/tex] [tex]\leq[/tex] 0.000444) = P([tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex] [tex]\leq[/tex] [tex]\frac{0.000444-0.000462}{\sqrt{\frac{0.000444(1-0.000444)}{479,908} } }[/tex] ) = P(Z [tex]\leq[/tex] -0.59)
= 1 - P(Z < 0.59) = 1 - 0.7224 = 0.2776
The above probability is calculated by looking at the value of x = 0.59 in the z table which has an area of 0.7224.
These results suggest about media reports that cell phones cause cancer of the brain or nervous system that there is around 28% chance that 213 or fewer cases of such cancer in a group of 479,908 people can take place.
A loan of $23,000 is made at 6.75% interest, compounded annually. After how many years will the amount due reach 36,000 or more?
Answer:
after 9 years it would be 36,972.5
What is the value of the expression All of 2.8 multiplied by 10 to the power 7 over all of 1.4 multiplied by 10 to the power 3?
Answer:
2.0 x 10^10
Step-by-step explanation:
Answer:
2.0*10^4
On math away I put the question and put evaluate in scientific notion and it got this answer.
I need help with #13 and #14 please
What is the biggest even number I can make using 4,6,3,1
Answer:
7
Step-by-step explanation:
Answer:
6314
Step-by-step explanation:
You can just rearrange the numbers to get a number that can get into 2 without leaving a remainder
HOPE IT HELPED
The scatterplot below shows the relationship between the number of baseballs used in 14 games and the number of pitches thrown in these games.
Answer:
i think 150
Step-by-step explanation:
sorry if its wrong im just trying to help
Based on the scatterplot, The best prediction of the number of baseballs that will be used if 275 pitches are thrown will be 150. Option A is correct.
What is a scatter plot?Scatter plots are graphs that represent individual points of data and are labeled with quantitative values on both coordinate axes, meaning that there is only one projection on the x-axis and one projection on the y-axis for each point.
Given this information, the scatterplot below depicts the correlation between the number of baseballs used in 14 games and the number of pitches thrown in these games.
Making forecasts about the future is possible with a scatter plot. You can draw a line, referred to as a best-fit line, that is near the majority of the data points in order to aid in the forecasts. A line should be drawn with around half of the data points above and half below it.
Thus, based on the scatterplot, The best prediction of the number of baseballs that will be used if 275 pitches are thrown will be 150. Option A is correct.
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prime factorization of the following numbers in exponential form 48prime factor of 32
-6(2r +8)=-10(r-3)
I need the work to
Answer:
r = -39
Step-by-step explanation:
So we are trying to solve the equation for r.
-6(2r + 8) = -10(r - 3)
Divide both sides by -2. (This will make distributing much easier.)
3(2r + 8) = 5(r - 3)
Distribute the 3 on the left side and the 5 on the right side,
6r + 24 = 5r - 15
Subtract 24 from both sides.
6r = 5r - 39
Subtract 5r from both sides.
r = -39
So now we have solve the equation.
I hope you find my answer and explanation to be helpful. Happy studying. :)
Answer:
Ok its -39
Step-by-step explanation:
https://www.tiger-algebra.com/en/solution/linear-equation-one-unknown/-6(2r+8)=-10(r-3)/
3x-4=2x+4 reason for ech step
Answer:
x=8
Step-by-step explanation:
3x-4=2x+4
Subtract 2x from each side using the subtraction property of equality
We want to get all the x 's on one side
3x-2x-4=2x-2x+4
x-4 = 4
Add 4 to each side using the addition property of equality
We want all the constants on one side
x-4+4= 4+4
x= 8
Answer:
x=8
Step-by-step explanation:
3x-4=2x+4
Subtract 2x on both sides
Your equation will look like
x-4=4
Add the four on both sides
Since x equals one you don't divide x
your answer will be x=8
The price of a laptop was marked 80 percent off because it had a cracked screen.
Percents
Total
80%
20%
100%
x
$150
If this resulted in a savings of $600, what is the value of x in the table above?
15 %
20 %
25 %
40 %
Answer:
20%
Step-by-step explanation:
just took test plz mark as brainliest
Answer:yes its 20%
Step-by-step explanation:i did the test and the other guy was right!tysm
round each amount to the nearest hundred to find the estimate of 9635 - 4891
Answer:
the answer is 4,744
Step-by-step explanation:
just subtract
A parabola $ax^2+bx+c$ contains the points $(-1,0)$, $(0,5)$, and $(5,0)$. Find the value $100a+10b+c$.
Answer:
-55
Step-by-step explanation:
(a,b,c) = (-1, 4, 5)
100a = -100
10b = 40
c = 5
-100 + 40 + 5 = -55
Let f(x) = x - 3 and g(x) = x + 11. Find f(x) · g(x)
Answer:
the answer is :
x^2 +8x-33
Mason has 1,015 pounds of apples. He sells 9 bushels, 25 boxes, and 40 bags. How many pounds of apples does Mason have left? Enter your answer in the box. Container Bushel Box Bag Pounds Per Container 39.2 15.5 pounds
Answer:
Mason is left with 54.7 pounds of apples
Why is this divergent?
Step-by-step explanation:
Cosecant is undefined at π/2, so we can rewrite this integral as:
lim(u→π/2) ∫ᵤᵖⁱ 35 csc(x) dx
lim(u→π/2) 35 ln│csc(x) − cot(x)│|ᵤᵖⁱ
lim(u→π/2) [35 ln│csc(π) − cot(π)│ − 35 ln│csc(u) − cot(u)│]
undefined
The integral diverges.
Jenny wants to order tickets to a production of Charles Dickens’ A Christmas Carol. The ticket broker charges a one-time fee of $15 plus $28 per ticket. The total cost of t tickets can be found using the expression 15+28t. How much will it cost Jenny to purchase 4 tickets?
$127 is the answer.. can i have a brainliest? :)
Rico has 274 stickers. Gabby has 100 more stickers than Rico.
Thomas has 10 fewer stickers than Gabby.
Enter the number of stickers each child has.
Rico has blank stickers.
Gabby has blank
stickers.
Thomas has blank
stickers.
Answer:
Rico has 274 stickers. Gabby has 374 stickers. Thomas has 364 stickers.
Answer:
Rico has 274 stickers
Gabby has 374 stickers
Thomas has 364 stickers
Step-by-step explanation:
To solve you need to work step by step, write down what you know.
Rico has 274 and Gabby has 100 more. So 274 + 100 = 374
Gabby has 374
Rico has 274
Now Thomas has 10 less than Gabby and gabby has 374. 374 - 10 = 364
Thomas has 364
Hope that helps and have a great day!
It cost ayden $16.90 to send 169 text messages. How much would it cost to send 6 text messages
c60
$0.6
Step-by-step explanation:Hi there !
169ms ............. $16.90
6ms................... $ x
x = 6×$16.90/169
= 6×c1690/169
= c10140/169
= c60
= $0.6
Good luck !
It cost Ayden $0.6 for 6 text messages.
What are proportions?Proportion is a mathematical comparison between two numbers. According to proportion, if two sets of given numbers are increasing or decreasing in the same ratio, then the ratios are said to be directly proportional to each other.
Given that, It cost Ayden $16.90 to send 169 text messages. we need to find how much would it cost to send 6 text messages,
We will set a proportion for this question,
Let it cost x for 6 texts,
therefore,
16.9 / 169 = x / 6
0.1 = x/6
x = 0.6
Hence, it cost Ayden $0.6 for 6 text messages.
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Erin had 55 Stuffed bears she took out her 7 favorites and equally divided the rest among her 3 sisters how many bears did each sister get
Answer:
16
Step-by-step explanation:
When you start off with 55 stuffed bear and take away 7 you get 48 and, 48/3 =16
the kline family went on vacation last year and paid $199 a night for the hotel room. This year, the price has increased by 5% . what is the nightly rate for the hotel room this year?
Answer: $208.95
Step-by-step explanation: $199 x .05= 9.95 + $199= $208.95
if you have the multiple choice answers:
A. $9.95
B. $204.00
C. $208.45
D. $298.50
the answer would be C. $208.45.
final = original ±- (% for problem × original)
=199 + 5% × 199
=199 + 0.05 × 199
=199 + 9.95
=208.95
If a bag of marbles contains 2 blue, 2 red. 3 white and 4 yellow marbles,
what is the probability that I draw a blue marble OR a white one? DO NOT
REDUCE
Answer:
2/11 - chance that you will get a blue marble
3/11- chance that you will get a white marble
Which graph represents the solutions to this equation?
x2 + 8x = -20
10x=-20
x=-2
Step-by-step explanation:
after you solve the above equation then represent it in graph
it lies on upper left side
Answer:
B
Step-by-step explanation: The one with the vertex of (-4,4)
What is the image of the point
(
8
,
4
)
(8,4) after a rotation of
9
0
∘
90
∘
counterclockwise about the origin?
By estimation, 3.9 turns into 4 and 5.3 turns into 5. The answer after estimation is 20 while the real answer is 20.67. Well u see by estimation we get an answer of two places right. So, real answer should also have two places.Place the decimal point after it.y43
Step-by-step explanation: i dont know if I'm right or not
Fencing costs $25.80 per yard. How much does it cost to enclose two adjacent rectangular pastures x= 50 5/8 y= 30 2/9
Answer:
Step-by-step explanation:
54.65
A rectangular number is a that is generated by two numbers successive. It had four faces and four angles. For Example Cartons, banknotes, and mobile phone boxes.
Given:
[tex]\to \bold{x= 50 \frac{5}{8}} \\\\ \to \bold{y= 30 \frac{2}{9}}\\\\[/tex]
Fencing costs[tex]\bold{= \$25.80 / yard}[/tex]
To find:
total Cost=?
Solution:
[tex]\to \bold{x= 50 \frac{5}{8}=\frac{405}{8} } \\\\ \to \bold{y= 30 \frac{2}{9}= \frac{272}{9}}\\\\[/tex]
[tex]\to \text{Area of rectangular= length\ (x)} \times \text{width\ (y)}[/tex]
[tex]\bold{= \frac{405}{8} \times \frac{272}{9}}\\\\\bold{= 50.625 \times 30.222}\\\\\bold{= 1529.98875 \approx 1530}\\\\[/tex]
Calculating the Fencing costs:
[tex]= \text{Fencing costs} \times \text{area of rectangular}[/tex]
[tex]=\bold{ \$ 25.80 \times 1530}\\\\=\bold{\$39474}[/tex]
So, the final answer is "$39,474".
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Which function has a period of 4π?
y = one-half sine (one-half x)
y = sine (one-fourth x)
y = 2sin(2x)
y = 4sin(x)
Answer:
The answer is a
Step-by-step explanation:
based on the equation, period=2pi/b, you can just plug in the values for the equation on each option, b being the constant in front of x.
The time period of first option is [tex]4 \pi[/tex].
Thus, first option is correct.
Compare given option from [tex]y=asin(wx)[/tex]
Where w is frequency.
First option is, [tex]y=\frac{1}{2} sin(\frac{1}{2}x )[/tex]
After comparing, We get [tex]w=\frac{1}{2}[/tex]
As we know that, Time period [tex]T=\frac{2\pi}{w}[/tex]
[tex]T=\frac{2\pi}{1/2}=4\pi[/tex]
Hence, function [tex]y=\frac{1}{2} sin(\frac{1}{2}x )[/tex] has period of [tex]4\pi[/tex].
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Suppose Kalvin spins the pointer 64 times. Based on your experiment, how many times can you expect the pointer to land on 9:00, on 10:00 and on 11:00?
Answer:
16 times out of 64
Step-by-step explanation:
So, I could be wrong, but basically:
9, 10, and 11 are only 3 of the 12 possible outcomes that could happen.
3 out of 12 is 1/4.
What this means is that for every 4 times he spins the pointer, he can expect to get 9, 10, or 10 once.
Or 25% of the time
1/4 of 64 is 16.
Yari says that the product 230×104 has four zeroes. Is she correct? In the box below, explain your answer including how patterns for multiplying by powers of 10 help determine the final answer. Show your work to support your conclusion.
Answer:
Step-by-step explanation:
No she is not because if you do 230 times 104 you get 23920 and there is only one zero. [tex]230*104=23920[/tex]
No, she is incorrect because if you do 230 times 104 you get 23920 and there is only one zero.
What is multiplication?In mathematics, multiplication is defined as the sum of the numbers to the other number given. Like if 2 is multiplied by 3 then the multiplication will be the sum of the two three times.
Multiplication is the process of determining the product of two or more numbers in mathematics. A product, or an expression that specifies factors to be multiplied, is what happens when you multiply two numbers in mathematics.
The product of the two numbers 230 and 104 will be,
230
x 104
______
920
000x
230xx
______
23920
Therefore, she is incorrect because if you do 230 times 104 you get 23920 and there is only one zero.
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