Answer: -2 and 26
Step-by-step explanation:
-2 * 26 = -52
-2 + 26 = 24
Answer:
-2 and 26
Step-by-step explanation:
What is 50% of 30 and what is 30% of 10
Answer:
50% of 30 is 15.
30% of 10 is 3
Max and Leah each have a lemonade stand . Max sold 12 glasses the first hour and 10 glasses each hour after that . Leah sold 8 glasses the first hour and 10 glasses each hour after that . How many glasses will each person have sold after 5 hours?
Answer:
max wil sell 52 because the first hour he sold 12 5hours -1 hour = 4 hour
4 hour × 10 p/h= 40
max sold 12+40 =52
leah will sell 58 because the first hour she sold 8
5hours - 1hour = 4 hours
4hours× 10 glasses p/h = 40
leah sold 40+8 =48 glasses
If Max and Leach sold 10 glasses each hour then after Max sold 52 glasses after 5 hours and Leach sold 48 glasses after 5 hours because it forms arithmetic progression.
What is an arithmetic progression?It is a type of sequence in which each number have a common difference from the other number. The nth term of an arithmetic progression can be calculated as a+(n-1)d.
How to calculate nth term of an A.P.?For Max we have been given that the first term is 12 and the common difference is 10.
After 10 hours the glasses which Max will sell as 12+(5-1)*10
=12+40=52 glasses
For Leach we have been given that the first term is 8 and the common difference is 10.
After 5 hours the glasses which Leach will sell as 8+(5-1)*10
=48 glasses.
Hence the number of glasses will be 52 and 48 glasses for Max and Leach.
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Mr. Otsuki has 25 bills worth $300. He has $5, $10, and $20 bills. How many of each type of bill could he have if he has exactly ten $20 bills and at least nine $5 ...
Answer:
Mr. Otsuki could have:
10 $20 bills
5 $10 bills
10 $5 bills
but there are many other ways.
Step-by-step explanation:
We already know that Mr. Otsuki already has at least $245.
10 $20 bills - $200
at least 9 $5 bills - $45
300 - 245 = 55
55 can be made up in many different ways
5 tens + 1 five
9 fives+ 1 tens
4 tens + 3 fives
5 fives+ 3 tens
2 tens + 7 fives
So there are like five answers to this question:
A.
10 $20 bills
5 $10 bills
10 $5 bills
B.
10 $20 bills
1 $10 bills
9 $5 bills
C.
10 $20 bills
4 $10 bills
3 $5 bills
D.
10 $20 bills
3 $10 bills
5 $5 bills
10 $20 bills
2 $10 bills
7 $5 bills
For the given data, (a) find the test statistic, (b) find the standardized test statistic, (c) decide whether the standardized test statistic is in the rejection region, and (d) decide whether you should reject or fail to reject the null hypothesis. The samples are random and independent.
Claim: μ1 < μ2, α = 0.01. Sample statistics: x^-1 = 1240, n1 = 40, x^-2 = 1200 and n2 = 80. Population statistics: σ1 = 65 and σ2 = 110.
(a) The test statistic for μ1 - μ2 is _________.
(b) The standardized test statistic for μ1 - μ2 is __________. (Round to two decimal places as needed.)
(c) Is the standardized test statistic in the rejection region?
O Yes Ο Nο
(d) Should you reject or fail to reject the null hypothesis?
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
The test statistic for μ1 - μ2 is [tex]\= x_1 - \= x_2 = 40[/tex]
b
The standardized test statistic for μ1 - μ2 is [tex]z = 2.5[/tex]
c
No
d
Fail to reject null hypothesis [tex]H_O : \mu_1 \ge \mu_2 ; H_a : \mu_1 < \mu_2[/tex] At the 1% significance level , there is insufficient evidence to support the claim
Step-by-step explanation:
From the question we are told that
The given data is
[tex]\= x_1 = 1240[/tex]
[tex]\= x_2 = 1200[/tex]
[tex]n_1 = 40[/tex]
[tex]\alpha = 0.01.[/tex]
[tex]n_2 = 80.[/tex]
[tex]\sigma 1 = 65 \ and\ \sigma2 = 110.[/tex]
Now the test statistic is mathematically evaluated as
[tex]\= x_1 - \= x_2 = 1240 -1200[/tex]
[tex]\= x_1 - \= x_2 = 40[/tex]
The standardized test statistic is mathematically represented as
[tex]z = \frac{\= x_1 - \= x_2}{\sqrt{\frac{\sigma_1^2}{n_1} } + \frac{\sigma_2^2}{n_2} }[/tex]
substituting values
[tex]z = \frac{\= 1240 - \= 1200}{\sqrt{\frac{65^2}{40} } + \frac{110^2}{80} }[/tex]
[tex]z = 2.5[/tex]
Now the standardized test statistic is not in the rejection region because the z value of [tex]\alpha[/tex] is 2.33 and the standardized test statistic is greater than that hence it is not in the rejection region
This implies that the test statisties failed to reject the null hypothesis at significance level of 0.01 , there insufficient evidence to support the claim
What is the square root of -1?
-j.
-1
Answer:
Its not a real number for the square roots of negative number
its not possible... [tex]\sqrt{-4}[/tex] = -2 x -2 no... 2 x 2 no..... -2 x 2 yea but thats not square root anymore...
Step-by-step explanation:
Give me brainliest!!!
please help me to find the correct answer
Answer:
Step-by-step explanation:
1) Your calculator can evaluate f(-5) for you. It will be ...
f(-5) = (1/3)^(-5) -3 = 243 -3
f(-5) = 240
So, a point on the graph is (-5, 240).
Other points on the graph will be (1, -8/3), (0, -2), (-1, 0), (-2, 6).
__
2) The given function f(x) can be written as ...
f(x) = (1/3)^x -3 = (3^-1)^x -3 = 3^-x -3
So, the transformed function is transformed by adding 1, changing the horizontal asymptote from -3 to -2. The whole graph is translated upward one unit. Each of the above-listed points will have 1 added to its y-value.
Mrs.Mark has 3/4 pond of cheese to use making sandwiches. She uses about 1/34 pound of cheese on each sandwich. How many sandwiches can she make with the cheese she has?
Answer:
Step-by-step explanation: Divide
3
4
which is the amount of cheese she has,
by
1
32
which is the amount of cheese required for each sandwich.
3
4
1
32
This is a complex fraction.
Simplify the fraction by multiplying both the numerator fraction and the denominator faction by the inverse of the bottom fraction
1
32
3
4
×
32
1
1
32
×
32
1
The bottom fraction times its inverse is equal to
1
leaving
3
4
×
32
1
4
divides out of
4
and
32
leaving
3
×
8
=
24
sandwiches
PLS HELP
f(1) = -6
f(2) = -4
f(n) = f(n - 2) + f(n - 1)
f(3) =
Answer:
f(1) = -6
f(2) = -4
f(n) = f(n - 2) + f(n - 1)
=> f(3) = f(2) + f(1) = -6 + (-4) = -10
Hope this helps!
:)
Answer:
f(3)=-10
Step-by-step explanation:
Khan
Jake received $300 for his birthday. He must decide how much of it to save and how much to spend. His bank has a 5% interest rate. How much more would be in his account after 5 years if he saved $300 than if he saved $250?
Answer:
Assuming no compounding, given an interest rate of 5%, after 5 years the $300 dollars become:
300*(1+5%)^5= $382.884469
By saving $250 instead,
250*(1.05)^5=319.07039
The difference is 382.8845-319.0704= 63.8141
Step-by-step explanation:
The formula is FV=PV*(1+r%)^T
Where:
FV- future value
PV- present value
r%- interest rate
T- Time (usually in years)
Quickly Please!
Which equation has the solutions x = StartFraction 5 plus-or-minus 2 StartRoot 7 EndRoot Over 3 EndFraction?
3x2 – 5x + 7 = 0
3x2 – 5x – 1 = 0
3x2 – 10x + 6 = 0
3x2 – 10x – 1 = 0
Answer:
3x^2-10x+6=0
Step-by-step explanation:
3x^2-10x+6=0
Δ=10^2-4*3*6=100-72=28
V28=V4*7=2V7
x1=(10+2V7)/6=2(5+V7)/6=(5+V7)/3
x2=(5-V7)/3
Answer:
d
Step-by-step explanation:
edge
I need help with this problem
Answer:
Step-by-step explanation:
ill help
Rufus invest 10,000 in a savings account that pays 3.5 simple interest each year. If Rufus makes no withdrawal or deposits to the account how much money will be in the account after 7 years ?
Answer:
$1272.28
Step-by-step explanation:
Our equation is
[tex]p*(1+x)^{t}[/tex] , with p being the starting amount, x being the interest rate, and t being the time. Plug our variables in to get
[tex]1000*(1+0.035)^{7}[/tex] = around 1272.28
A region R is shown. Decide whether to use polar coordinates or rectangular coordinates and write
Writing the integral in polar coordinates is less taxing:
[tex]\displaystyle\iint_Rf(x,y)\,\mathrm dA=\iiint_Rrf(r\cos\theta,r\sin\theta)\,\mathrm dr\,\mathrm d\theta[/tex]
The region R is captured by the set of points (in polar, of course)
[tex]R=\left\{(r,\theta)\mid1\le r\le3\land\dfrac{5\pi}4\le\theta\le2\pi\right\}[/tex]
so that the integral is
[tex]\displaystyle\int_{5\pi/4}^{2\pi}\int_1^3rf(r\cos\theta,r\sin\theta)\,\mathrm dr\,\mathrm d\theta[/tex]
In rectangular coordinates, we have to split up the region so that
[tex]R=R_1\cup R_2\cup R_3[/tex]
where
[tex]R_1=\left\{(x,y)\mid-\dfrac3{\sqrt2}\le x\le-\dfrac1{\sqrt2}\land-\sqrt{9-x^2}\le y\le x\right\}[/tex]
[tex]R_2=\left\{(x,y)\mid-\dfrac1{\sqrt2}\le x\le1\land-\sqrt{9-x^2}\le y\le -\sqrt{1-x^2}\right\}[/tex]
[tex]R_3=\left\{(x,y)\mid1\le x\le3\land-\sqrt{9-x^2}\le y\le0\right\}[/tex]
and the integral is split into 3 over these regions,
[tex]\displaystyle\iint_Rf(x,y)\,\mathrm dA=\sum_{n=1}^3\iint_{R_n}f(x,y)\,\mathrm dx\,\mathrm dy[/tex]
$56 they are 25% off wants to know what is the discount price
Answer:
$42
Step-by-step explanation:
This is an example of a percentage decrease.
To work out the percentage decrease you would first need to convert the percentage of 25% into a decimal. You can do this by dividing the percentage of 25 by 100, this gives you 0.25. This is because percentages are out of 100.
The next step is to minus 0.25 from 1, this gives you 0.75. This is because we are working out the percentage decrease.
To work out the discounted price you would multiply the amount of $56 by 0.75, this gives you $42.
1) Divide 25 by 100.
[tex]25/100=0.25[/tex]
2) Minus 0.25 from 1.
[tex]1-0.25=0.75[/tex]
3) Multiply $56 by 0.75.
[tex]56*0.75=42[/tex]
What does X equal please help I don’t want to do summer school!!!
Answer:
180-165 = 15 (remember how a line is always 180 degrees)
Answer:
15
Step-by-step explanation:
Since 180-165=15. That is the answer for x.
PLZ MARK BRAINLIEST!!!
The equation of a function is y = 10 – 9x.Find the value of x when
y = -8,
y = -26
Answer:
x = 2, x = 4
Step-by-step explanation:
The equation y = 10 - 9x is a linear equation and the value of either y or x can be found by substituting the given values of either y or x.
given that y = -8, and substituting this into equation y = 10 - 9x,
we have, -8 = 10 - 9x
10 + 8 = 9x
9x = 18; dividing both sides by 9
x = 2
given that y = -26, and substituting this into equation y = 10 - 9x,
we have, -26 = 10 - 9x
10 + 26 = 9x
9x = 36; dividing both sides by 9
x = 4
Sayid is buying a frame to go around the perimeter of a painting his daughter made. Each inch of framing costs $0.40. What is the total cost of the framing for the painting? . What is the first step you need to do? What is the answer to the first step? Write an equation to show your work. Choose the correct first step below.
Answer:
The total cost of the framing for the painting is $0.40·P
Step-by-step explanation:
The first step to be done is to measure the length of the perimeter of the painting
Whereby the perimeter of the painting is p inches long, then the total cost of the framing will be found to be as follows
Total cost of framing = Cost per inch of framing × Perimeter of painting
∴ Total cost of framing = $0.40 × p
The total cost of the framing for the painting = $0.40·P.
Unknown cultural affiliations and loss of identity at high elevations." These are words used to propose the hypothesis that archaeological sites tend to lose their identity as altitude extremes are reached. This idea is based on the notion that prehistoric people tended not to take trade wares to temporary settings and/or isolated areas. As elevation zones of prehistoric people (in what is now the state of New Mexico) increased, there seemed to be a loss of artifact identification. Consider the following information.Elevation Zone Number of Artifacts Number Unidentified7000-7500 ft 114 715000-5500 ft 142 23Let p1 be the population proportion of unidentified archaeological artifacts at the elevation zone 7000-7500 feet in the given archaeological area. Let p2 be the population proportion of unidentified archaeological artifacts at the elevation zone 5000-5500 feet in the given archaeological area.(a) Find a 95% confidence interval for p1 − p2. (Round your answers to three decimal places.)lower limit: upper limit:
Answer:
Step-by-step explanation:
Given the table of candy distributions below, find P(Not green), the probability
of selecting anything but a green candy at random from a large bag.
Above or below is the list of possible answers
Answer:
C
Step-by-step explanation:
Solve for yyy.
6=2(y+2)
y=
Need help with Math.
Answer:
4^(11/20)
Step-by-step explanation:
The applicable rule of exponents is ...
(a^b)/(a^c) = a^(b-c)
Using that here, we have ...
4^(3/4)/4^(1/5) = 4^(3/4 -1/5)
= 4^(15/20 -4/20) = 4^(11/20)
Which best describes the range of numbers that satisfy the inequality x> 124?
The range of numbers has an upper limit but no lower limít.
The range of numbers has a lower limit but no upper limit.
The range of numbers has a lower limit and an upper limit.
The range of numbers has neither a lower limit nor an upper limit.
Answer:
Answer shown below
Step-by-step explanation:
The range has a lower limit but no upper band limit
(124, infinity)
Answer:
B: The range of numbers has a lower limit but no upper limit.
Step-by-step explanation:
Trust me on this, also can I have brainiest please?
Hope you do well! :D
I took the test and I got 100%.
Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1
Answer:
[tex] P(z<1.13) = 0.8708[/tex]
And the best option would be:
[tex] 0.8708[/tex]
Step-by-step explanation:
We assume that the distribution for the random variable is:
[tex] X \sim N (\mu=0 , \sigma=1) [/tex]
For this case we want to calculate the following probability:
[tex] P(z<1.13)[/tex]
And we can use the normal standard distribution or excel and we got:
[tex] P(z<1.13) = 0.8708[/tex]
And the best option would be:
[tex] 0.8708[/tex]
To evaluate the effectiveness of a treatment, researchers often measure individuals before and after treatment, and record the amount of difference between the two scores. If the differences average around zero, it is an indication that the treatment has no effect. However, if the differences are consistently positive (or consistently negative), it suggests that the treatment does have an effect. For example, Kerr, Walsh, and Baxter (2003) evaluated the effectiveness of acupuncture treatment by measuring pain for a group of participants before and after a 6-week treatment program. Hypothetical data, similar to the results of the study, are as follows. Note that each score measures the difference in pain level after treatment compared to the pain level before treatment. A positive score indicates more pain before treatment than after.
+4, +5, +2, 0, +7, +4, +3, +3, +2, -2, +1, +6, 0, +4, +7, -1, +3, +5, +4, +2
Required:
a. Compute the mean for the sample of n=20 scores.
b. Does it appear the treatment has an effect? How do you know?
Answer:
Step-by-step explanation:
researchers often measure individuals before and after treatment, and record the amount of difference between the two scores.
If the differences average around zero, it is an indication that the treatment has no effect.
However, if the differences are consistently positive (or consistently negative), it suggests that the treatment does have an effect.
A positive score indicates more pain before treatment than after.
a. The mean of the sample for n = 20 scores is
+4, +5, +2, 0, +7, +4, +3, +3, +2, -2, +1, +6, 0, +4, +7, -1, +3, +5, +4, +2
4 + 5 + 2 + 0 + 7 + 4 + 3 + 3 + 2 + (-2) + 1 + 6 + 0 + 4 + (-1) + 3 + 5 + 4 + 2
= 55-3 / 20
= 52/20 = +2.6
b. An average of +2.6 was estimated thus, it appears the treatment has an effect as a positive sign indicates more pain before treatment than after.
Express 30p as a fraction of £3.00
Answer:
[tex]\frac{1}{10} \£[/tex]
Step-by-step explanation:
We know that £1 equals 100p.
Knowing this relation, we can use the rule of three
[tex]30p \times \frac{ \£1}{100p} =0.3 \£[/tex]
Then, we form the fraction
[tex]\frac{0.3 \£}{\£ 3.00} =\frac{3}{30} =\frac{1}{10} \£[/tex]
Therefore, the fraction of of £3.00 is
[tex]\frac{1}{10} \£[/tex]
The base of a prism is never a
Answer:
circle,oval overall its never round or with curves
Step-by-step explanation:
The base of a prism is never a ''Circle''. Because by definition Circular prism is not a prism.
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
Given that;
To find the never possible shape of base of prism.
Now, We know that;
A prism is a solid that has two faces that are parallel and congruent.
Hence, If you take any cross section of a prism parallel to those bases by making a cut through it parallel to the bases, the cross section will look just like the bases.
Hence, Circular prism is not a prism according to definition.
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Determine which of the following relations is a function.
Answer:
The farthest left box.
Step-by-step explanation:
In order for a relation to be a function, the order of numbers must be constant from the input to the output. The other numbers do not have a consistent value, but the one on the far left is x=+5 and y=-5, and it continues this way throughout the relation.
Hopefully this helped!
Answer: Hi! I am doing the same school program and the answer is A and C! Hope this helps.
Female athletes receive 25
What is the square root of -1?
Answer:
i
Step-by-step explanation:
i means imaginary because whatever you try you can't get a number which squared gets a negative number.
In a large population, 69% of the people have been vaccinated. If 4 people are randomly selected, what is the probability that At least one of them has been vaccinated?
Answer:
0.991
Step-by-step explanation:
Let Q be probability none of the 4 are vaccinated.
Let P be probability that at least 1 is vaccinated.
P = 1 - Q
Now if 69% are vaccinated, then 31% are not vaccinated.
Thus any given person has a probability of 0.31 of not being vaccinated.
Q = (0.31)^4 = 0.00924
P = 1 - 0.00924 = 0.991