Answer:
5x
Step-by-step explanation:
13x + 4x - 9x - 3x
5x
Need help ASAP! Thanks
Answer:
A = 1, B = 1
Step-by-step explanation:
From the question
(2x+1)/(x²+x) = A/x + B/(x+1)
(2x+1)/(x²+x) = [A(x+1)+(Bx)]/(x²+x)
Equation the numerator
2x+1 ≡ A(x+1) +Bx
2x+1 ≡ Ax+A+Bx
From the above,
A = 1.
And,
2x = Ax+Bx................ Equation 1
A+B = 2
Substitute the value of A into Equation 1
1+B = 2
B = 2-1
B = 1
A building has an entry the shape of a parabolic arch 22 ft high and 28 ft wide at the base, as shown below.
A parabola opening down with vertex at the origin is graphed on the coordinate plane. The height of the parabola from top to bottom is twenty two feet and its width from left to right is twenty eight feet.
1. Stephanie wants to build a fence around her garden to keep the rabbits out
The length of her garden is 5 feet and the width is 7 feet. How much fencing
will she need?
Answer:
24 feet
Step-by-step explanation:
1) sum the dimensions
7+5 = 12
2) multiply the value by 2
12 x 2 = 24 feet
Circle the expression that has the smallest value when x = 4
5 – x 1/2 x x + 1 x - 4
9514 1404 393
Answer:
(d) x-4
Step-by-step explanation:
If we assume your answer choices are ...
(a) 5 -x = 5 -4 = 1
(b) 1/2x = 1/2(4) = 2
(c) x +1 = 4 +1 = 5
(d) x -4 = 4 -4 = 0
Then the last choice (d) x -4 has the smallest value at x=4.
1. The width of a rectangle is 6 feet and the diagonal length of the rectangle is 19 feet. Which
measurement is closest to the length of this rectangle in feet?
Plz help me well mark brainliest If Correct
Here are summary statistics for randomly selected weights of newborn girls: n=250, x_=32.9 hg, s= 6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 31.9 hg < μ < 34.5 hg with only 19 sample values, x_=33.2 hg, and s=2.6hg? What is the confidence interval for the population mean μ?
Answer:
a) ( 31.92 < μ < 33.88 )
The confidence interval is not very different from the confidence interval given in the question
b) ( 31.74 , 34.66 )
Step-by-step explanation:
n = 250
x ( mean ) = 32.9
std = 6.9
95% confidence interval
df = n - 1 = 250 - 1 = 249
a) construct confidence interval estimate
calculate for the margin of error
= [tex]t_{0.05/2} ,_{250-1} ( \frac{s}{\sqrt{n} } )[/tex] ( using excel function: T.INV.2T(0.025,249) )
= 2.255 ( 6.9 / 15.81 )
= 0.98
Hence the confidence interval for the population
= ( x - 0.98 < μ < x + 0.98 )
= ( 31.92 < μ < 33.88 )
The confidence interval is not very different from the confidence interval given in the question
b) when n = 19
x = 33.2 and std = 2.6
margin of error = [tex]t_{0.05/2} ,_{19-1} ( \frac{s}{\sqrt{n} } )[/tex] = 2.45 * ( 2.6 / 4.36 ) = 1.46
confidence interval
= ( 33.2 - 1.46 , 33.2 + 1.46 )
= ( 31.74 , 34.66 )
2. Your friend has 10 minutes to catch his bus that is 1.5 miles away. He can run at
a speed of 10 miles per hour. If he runs the entire way, how long will it take him to
reach his bus? Will he get to his bus on time?
1 Add file
Answer:
it will take him 10 mins to reach the bus and will be on time
Step-by-step explanation:
1. 10miles/6=1.66...
Mr. Wilcox would really like his laptimes to be consistently between 1.75 and 1.85 minutes.
What proportion of his laps were in this range?
Answer:
Use normalcdf ( 1.75, 1.85, 1.84, 0.07 )
Doc and Marty should have laptimes between 1.75 and 1.85 approximately 45.75% of the time.
Step-by-step explanation:
A chi-square test of independence was conducted to investigate whether there is an association between the location where a person lives in a city (north, south, east, or west) and who the person planned to vote for in the upcoming mayoral election (the incumbent or the challenger). A random sample of 100 potential voters was selected, and the hypothesis test had a chi-square test statistic of χ2=9.84 with a p-value of 0.02. Which of the following statements is the correct interpretation of the p-value in context?
(A) There is a 2 percent chance that where a person lives and who that person plans to vote for are independent.
(B) There is a 2 percent chance that where a person lives and who that person plans to vote for are dependent.
(C) There is a 2 percent chance of making a Type II error.
(D) Assuming that the location of where a person lives and who that person plans to vote for are dependent, there is a 2 percent chance of finding a test statistic that is 9.84 or greater.
(E) Assuming that the location of where a person lives and who that person plans to vote for are independent, there is a 2 percent chance of finding a test statistic that is 9.84 or greater.
Answer:
E) Assuming that the location of where a person lives and who that person plans to vote for are independent, there is a 2 percent chance of finding a test statistic that is 9.84 or greater.
Step-by-step explanation:
Chegg
Jeremiah's new running sneakers cost $95. Their
state also has a 6.35% sales tax. How much will
Jeremiah have to pay for the sneakers, including
sales tax?
Answer:
$101.03
Step-by-step explanation:
two ways to solve:
95 x 1.0635=101.03
or
95 x .0635=6.03 sales tax paid
sales price 95 + sales tax 6.03 = total paid $101.03
9. Simplity (4a + 6) - 1 (4 + b).
c 2a +
2a + 이
s+
Aa
a+-
D 2a-b
Step-by-step explanation:
gcfucycudcuduficfiuxr
The distance around a triangle is 34 centimeters. If two sides are equal and the length of the third side is 6 centimeters, what is the length of each of the other two sides?
Subtract 6 from the total then divide by 2.
34-6 = 28
28/2 = 14
The length of the other two sides are 14 cm each
Rectangle DEFG was dilated
to form D'E'F'G. Point G(-2,0)
was dilated to G'(-8,0).
Answer:
A. (-2,1)
Step-by-step explanation:
You have recently been employed in a medium size company and deployed in the accounts department.
Your head of section has given you the following extract from the cashbook for the month of February 2021:
Sh. Sh.
Receipts during the month 2,938,000 Balance brought forward (1.2.2021) 1,522,000
Balance carried forward (28.2.2021) 1,108,000 Payments during the month 2,524,000
4,046,000 4,046,000
The head of section further informs you that all receipts are banked intact and all payments are made by cheque. On investigation, you discover the following:
1. Bank charges and commissions amounting to Sh. 272,000 entered on the bank statement had not been entered in the cashbook.
2. Cheques drawn amounting to Sh. 534,000 had not been presented to the bank for payment.
3. Cheques received totaling Sh. 1,524,000 had been entered in the cashbook and paid into the bank, but had not been credited by the bank until March 2021.
4. A cheque for Sh. 44,000 had been entered as a receipt in the cashbook instead of a payment.
5. A cheque for Sh. 50,000 had been debited by the bank by mistake.
6. A cheque received for Sh. 160,000 had been returned unpaid. No adjustment had been made in the cashbook.
7. All dividends receivable are credited direct to the bank account. During the month of February 2021. Dividends totaling Sh. 124,000 were credited by the bank and no entries had been made in the cashbook.
8. A cheque drawn for Sh. 12,000 had been incorrectly entered in the cash book as Sh. 132,000.
9. The balance brought forward should have been Sh. 1,422,000.
10. The bank statement as at 28 February 2021 showed on overdraft of Sh. 2,324,000.
Required:
(i) The adjusted cashbook as at 28 February 2021 (4 marks)
(ii) Bank reconciliation statement as at 28 February 2021. (6 marks)
Answer:
I AINT DOING THAT FOR 5 POINTS GIMME MORE
Step-by-step explanation:
what is the distance between the points (-4,7) and (6,-3)
Answer:
100 units
Step-by-step explanation:
((6+4)^2+(-3-7)^2)^1/2
100+100^1/2
10000^1/2
100 units
I HAVE ALGEBRA 2 QUESTIONS ON MY PAGE 50 POINTS EACH PLEASE SOMEONE HELP !!
Answer:
Where is the paper?
Step-by-step explanation:
The function y=e−3x is vertically stretched by a factor of 4, reflected across the y-axis, and then shifted up 5 units, find the resulting function.
y=1/4e^3x-5
After a whole year this hasn't been answered
The resulting function of y=e^(−3x), when vertically stretched by a factor of 4, reflected across the y-axis, and then shifted up 5 units is y=[4e^(−3x)] + 5.
How does the transformation of a function happen?The transformation of a function may involve any change.
Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs) etc.
If the original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:
Horizontal shift (also called phase shift):
Left shift by c units, y=f(x+c) (same output, but c units earlier)Right shift by c units, y=f(x-c)(same output, but c units late)Vertical shift
Up by d units: Down by d units: y = f(x) - dStretching:
Vertical stretch by a factor k: [tex]y = k \times f(x)[/tex]Horizontal stretch by a factor k: [tex]y = f(\dfrac{x}{k})[/tex]Given the function [tex]y=e^{-3x}[/tex] is vertically stretched by a factor of 4. Therefore, the function will be written as,
[tex]y = 4 \times e^{-3x}[/tex]
Now, the function is shifted up by 5 units, therefore, the function will become,
[tex]y = (4e^{-3x})+5[/tex]
Hence, the resulting function of y=e^(−3x) , when vertically stretched by a factor of 4, reflected across the y-axis, and then shifted up 5 units is y=[4e^(−3x)] + 5.
Learn more about Transforming functions:
https://brainly.com/question/17006186
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GIVING BRAINLIEST TO FIRST COMPLETE ANSWER
View the work below from a student last year. What was their mistake? Be detailed in their response.
-3(x + 4) = 2x - 5
-3x + 4 = 2x - 5
4 = 5x - 5
9 = 5x
1.8 = x
Answer:
x = -1.4
Step-by-step explanation:
-3(x + 4) = 2x - 5
-3x + (-3*4) = 2x - 5
The mistake was in the above equation where -3 should be multiplied with 4.
-3x -12 = 2x -5
5 -12 = 2x+3x
-7 = 5x
x = -7/5 = - 1.4
1Alfred departs from NAMPO Park
at 18:45 and travels to Sasolburg at
an average speed of 88 km/h. He
calls his wife to inform her that he
will arrive in Sasolburg at 8 pm.
Verify, with calculations, whether his
estimate is correct.
You may use the formula:
Distance= Speed x time
Answer:
Alfred will not arrive in his city at 8 PM, but he will arrive at approximately 8:20 PM.
Step-by-step explanation:
Since Alfred departs from NAMPO Park at 18:45 and travels to Sasolburg at an average speed of 88 km / h, and he calls his wife to inform her that he will arrive in Sasolburg at 8 pm, to determine if his estimate is correct the following calculations must be performed:
The shortest route from Nampo Park to Sasolburg in South Africa is 139 km via Route 59.
8 PM = 20:00
20:00 - 18:45 = 1:15
139/88 = 1.57
60 x 0.57 = 34.74
Thus, Alfred will not arrive in his city at 8 PM, but he will arrive at approximately 8:20 PM.
a farmer has 80 yards of land east and 100 yards west
Answer: 8000?
Step-by-step explanation:
If your asking the area of his land, 800 yards
Total of 180 I guess? What are you trying to askkk?
Round off 23809 to nearest hundred
Answer:
24000
Step-by-step explanation:
23809=24000
What figure is formed by a locus of points
on a plane that are equidistant from a fixed
point?
If there is an 80% chance of rain for 10 days, how many days should it rain?
Answer:
10 shouldn't it be 10 days
Step-by-step explanation:
hope it helps
pleaseeeeeeee helppppppp
Answer:
138°
Step-by-step explanation:
69X2=138
The radius of a circle is 3 cm. Find its area in terms of \piπ.
Answer:
The area would be 28.27
Write 3/4 as a sum of fractions in two different ways none of your fractions should be equal to 0
Answer:
1/4 plus 1/2, and 3/8 plus 3/8
translate into an equation
the sum of 9 times a number and 7 equals 5x
use variable w for the unknown number
Answer:
9w + 7 = 5x
hope this answer helps you.....
In a sewage treatment plant, a large concrete tank initially contains 440,000 liters of liquid and 10,000 kg of fine suspended solids. To flush this material out of the tank, water is pumped into the vessel at a rate of 40,000 l/h. Liquid containing solids leaves at the same rate. Estimate the concentration of suspended solids in the tank at the end of 4 h. You can assume that the initial concentration of solids in the tank
Answer:
[tex]Concentration = 8.26kg/m^3[/tex]
Step-by-step explanation:
Given
[tex]V = 440000L[/tex] --- volume of tank
[tex]m = 10,000 kg[/tex] --- solid mass
[tex]r = 40000L/hr[/tex] --- outflow rate
Required
Determine the concentration at the end of 4 hours
First, calculate the amount of liquid that has been replaced at the end of the 4 hours.
[tex]Amount = r * Time[/tex]
[tex]Amount = 40000L/hr * 4hr[/tex]
[tex]Amount = 40000L * 4[/tex]
[tex]Amount = 160000L[/tex]
This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced
Calculate the ratio of the liquid replaced.
[tex]Ratio = \frac{Amount}{Volume}[/tex]
[tex]Ratio = \frac{160000L}{440000L}[/tex]
[tex]Ratio = \frac{16}{44}[/tex]
[tex]Ratio = \frac{4}{11}[/tex]
Next, calculate the amount of solid left.
[tex]Amount (Solid)= Ratio * m[/tex]
[tex]Amount (Solid)= \frac{4}{11} * 10000kg[/tex]
[tex]Amount (Solid)= \frac{40000}{11}kg[/tex]
[tex]Amount (Solid)= 3636kg[/tex]
Lastly, the concentration is calculated as:
[tex]Concentration = \frac{Amount (Solid)}{Volume}[/tex]
[tex]Concentration = \frac{3636kg}{440000L}[/tex]
Convert L to cubic meters
[tex]Concentration = \frac{3636kg}{440000* 0.001m^3}[/tex]
[tex]Concentration = \frac{3636kg}{440m^3}[/tex]
[tex]Concentration = 8.26kg/m^3[/tex]
find the area of the composite figure
Answer:
6808 yds
Step-by-step explanation:
First find the area in black in total
190 x 48 = 9120
then find the area of the two squares
34 x 34 = 1156
1156 x 2 = the two square combined = 2312
subtract the total area in black with the area of the combined squares
9120 - 2312 = 6808
Hoped this helped.
