can you show me a picture then maybe i can help you
Answer:
Domain: (-∞,∞),{xIx∈R}
RANGE:(10,∞),{yly>10}
PLEASE HELP SOLVE FOR ‘X’!!!
Answer:
x= 10
Step-by-step explanation:
1/5 x -2/3 = 4/3
Add 2/3 to each side
1/5x -2/3 +2/3 = 4/3 +2/3
1/5x = 6/3
1/5x = 2
Multiply each side by 5
1/5x * 5 = 2*5
x = 10
Mercury is a heavy metal that can cause severe health problems in even small concentrations. Fish and shellfish efficiently concentrate mercury into their flesh, so it is important to monitor seafood for its mercury content. An extensive study conducted in 1980 concluded that the mean mercury level in oysters from the White Bear estuary was 0.020 parts per million (ppm) with a standard deviation ppm. In 2012, a sample of 40 oysters from the same estuary exhibited a mean mercury concentration of . Can you conclude that the 2012 mercury concentration is lower than in 1980? Use the level of significance.
Answer:
The overview of the problem is listed in the segment below on the explanation.
Step-by-step explanation:
The given values are:
Sample mean, [tex]\bar{Z}=0.017[/tex]
The hypothesized mean value, [tex]\mu_{0}=0.02[/tex]
Population standard deviation, [tex]\sigma=0.036[/tex]
As we know, the status of the test is as follows:
⇒ [tex]z^* = \frac{\bar X - \mu_0}{\frac{\sigma}{\sqrt{n}}}[/tex]
On putting the values, we get
⇒ [tex]= \frac{0.017 - 0.02}{\frac{0.036}{\sqrt{40}}}[/tex]
⇒ [tex]=-0.5357[/tex]
Now, even though this is a one-sided check, here so the p-value is measured as:
[tex]p=P(Z<-0.5357)[/tex]
[tex]=0.2[/tex]
Consequently p-value > 0.05 the check isn't relevant so there is no data to suggest that perhaps the concentration of mercury fallen from 1980 until 2012.
a. Using the pairs of values for all 10 points, find the equation of the regression line. b. After removing the point with coordinates (2 comma 2 ), use the pairs of values for the remaining 9 points and find the equation of the regression line. c. Compare the results from parts (a) and (b). 0 2 4 6 8 10 0 2 4 6 8 10 x y A scatterplot has a horizontal x-scale from 0 to 10 in increments of 1 and vertical y-scale from 0 to 10 in increments of 1. Ten points are plotted with nine points, (5, 5), (6, 5), (7, 5), (5, 6), (6, 6), (6, 6), (7, 6), (5, 7), (6, 7), and (7, 7), forming a square and the tenth point (2, 2) being below and to the left of the square. a. What is the equation of the regression line for all 10 points? ModifyingAbove y with caretequals 1.647plus 0.706x (Round to three decimal places as needed.) b. What is the equation of the regression line for the set of 9 points? ModifyingAbove y with caretequals 6 (Round to three decimal places as needed.) c. Choose the correct description of the results below. A. The removal of the point has a significant impact on the regression line. B. The regression line changes, but the change is small. C. There is no regression line for the second case because the data are in a pattern. D. The regression line is very similar in both cases.
Answer:B. The regression line changes, but the change is small. C. There is no regression line for the second case because the data are in a pattern. D. The regression line is very similar in both cases.
Step-by-step explanation:
4. Jane and Terry went to Long Island for a week. They needed to rent a car, so they checked out two rental firms. Avis wanted $28 per day with no mileage fee. Hertz wanted $108 per week and $0.14 per mile. How many miles would they have to drive before the Avis price is less than Hertz’s price?
Answer:
Anything more than 89.8 miles
Step-by-step explanation:
Since Hertz charges $108/week, divide that by 7 so you have the daily rate.
Which is $15.43. Then set 28 = 15.43 + .14x. Subtract 15.43 from both sides.
12.57 = .14x Then divide both sides by .14 x = 89.8 miles is the break even point, so anything over that is when the Avis price would be less and anything under that is when the Hertz price is less.
If u can help me and show work plzzz!!!
Answer:
A; C
Step-by-step explanation:
x = (1/2)(125 - 27) -->
x = (1/2)(98) -->
x = 49 (A)
_________
x = RS -->
(x+2)(2) = (3+5)(3) -->
2x + 4 = 9 + 15 -->
2x = 9 + 15 - 4 -->
2x = 20 -->
x = 10 (C)
A sculpture sits on a pedestal in the shape of a square prism. The side lengths of a base of the prism are 3 feet. The height of the prism is 4 feet. The museum director wants to cover all but the underside of the pedestal with foil that costs $0.22 per square foot. How much will the foil cost?
Answer:
Total cost of covering the pedestal is $12.54.
Step-by-step explanation:
The pedestal is a square prism so top and bottom are of square shape.
Hence, we have here length = width
We know that the Total Surface Area of a Prism is:
[tex]\text{Total Surface Area = } 2 (l\times w+ w \times h+ h \times l)[/tex]
Where l is length,
w is width and
h is height of prism
We know that here w = l = 3 feet
and h = 4 feet
Also, underside of pedestal is not to be covered.
The underside of pedestal is square type.
So,
[tex]\text{Required Total Surface Area = } l\times w+ 2\times w \times h+2\times h \times l[/tex]
[tex]\Rightarrow 3 \times 3 + 2 \times 3 \times 4 + 2 \times 3 \times 4\\\Rightarrow 9 + 24 + 24\\\Rightarrow 57\ ft^{2}[/tex]
Cost of cover per square foot = $ 0.22
Total cost of [tex]57\ ft^{2}[/tex] [tex]\Rightarrow 0.22 \times 0.57 = \$12.54[/tex]
Which description matches finding the volume of the solid ?
Square prism + Triangular prism. Hope it helps.
Determine if the point (2, 6) is on the graph of
Answer:
it is not on the graph
Step-by-step explanation:
Put the given values into the equation and see if it is true:
-2(2) +1/3(6) = -1
-4 +2 = -1 . . . . . . . .FALSE
The point is not on the graph of the equation.
If I'm looking at buying a house for $450,000, and want my deposit to be
20%, how much do I need to have saved?
A) 50,000.00
B) Your deposit needs to be higher than 20%
C) 52,000.00
D)90,000.00
Answer: 90,000
Step-by-step explanation:
Use a geometric model to factor 3x2 + 4x + 1 by following
these steps
Factor 1
2
Product
Step 1: Model the trinomial by placing tiles to form a
rectangle in the top left corner of the Product
section
+X
Factor 2
Check
B
Answer:
The factors of the expression [tex]f(x)= 3x^{2} + 4x + 1[/tex] are (3x + 1)(x + 1).
Step-by-step explanation:
The expression is:
[tex]f(x)= 3x^{2} + 4x + 1[/tex]
Factorize the expression as follows:
[tex]f(x)= 3x^{2} + 4x + 1[/tex]
[tex]=3x^{2}+3x+x+ 1\\\\=3x(x+1)+1(x+1)\\\\=(3x+1)(x+1)[/tex]
Thus, the factors of the expression [tex]f(x)= 3x^{2} + 4x + 1[/tex] are (3x + 1)(x + 1).
Answer: It shows correct if this is the model your looking for
Step-by-step explanation:
the sum of three consecutive even numbers is 114 what's the smallest of these numbers
Answer:
36
Step-by-step explanation:
consecutive even numbers are 2,4, 6...
Let the smallest of the 3 numbers be x.
2nd number= x+2
3rd number
=x+2+2
= x+4
sum of the 3 numbers= x +x+2 +x+4
114= 3x+6
3x= 114 -6 (-3 on both sides)
3x= 108 (simplify)
x= 108 ÷3
x= 36
Thus, the smallest number is 36.
Let's check!
36+38+40= 114 ✓
Solve the system of equations using the elimination method 4x+5y=40 6x+3y=42
Answer:
The solutions to the system of equations are [tex]y=4,\:x=5[/tex].
Step-by-step explanation:
To solve the system [tex]\begin{bmatrix}4x+5y=40\\ 6x+3y=42\end{bmatrix}[/tex]
First,
[tex]\mathrm{Multiply\:}4x+5y=40\mathrm{\:by\:}3\:\mathrm{:}\:\quad \:12x+15y=120\\\\\mathrm{Multiply\:}6x+3y=42\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:12x+6y=84[/tex]
[tex]\begin{bmatrix}12x+15y=120\\ 12x+6y=84\end{bmatrix}[/tex]
Subtract the first equation from the second equation
[tex]12x+6y=84\\\underline{-12x-15y=-120}\\-9y=-36[/tex]
Solve [tex]-9y=-36[/tex] for y:
[tex]\frac{-9y}{-9}=\frac{-36}{-9}\\y=4[/tex]
For [tex]12x+15y=12[/tex] plug in [tex]y=4[/tex] and solve for x
[tex]12x+15\cdot \:4=120\\12x=60\\x=5[/tex]
The solutions to the system of equations are:
[tex]y=4,\:x=5[/tex]
Is a temperature of 0.67 degrees a positive number or a negative number.
Answer:
It is a positive number.
Step-by-step explanation:
Numbers that are above 0 are considered positive and numbers below 0 are considered negative.
~Anna
Gloria earned a total of $810 over the summer. She earned $162 babysitting and the rest
from mowing lawns. Which bar model and solution represent x, the amount of money Gloria
earned mowing lawns?
Let x represent the amount of money Gloria earned mowing lawns.
We have been given that Gloria earned a total of $810 over the summer. She earned $162 babysitting and the rest from mowing lawns.
The total amount earned by Gloria would be amount earned from baby sitting and lawn mowing that is [tex]x+162[/tex].
Now we will equate total earnings of Gloria by 810 as:
[tex]x+162=810[/tex]
[tex]x+162-162=810-162[/tex]
[tex]x=648[/tex]
Therefore, Gloria earned $648 from mowing lawns.
Answer:
Gloria earned $648 from mowing lawns
Step-by-step explanation:
George calculated the distance between (2, 4) and (6, 3) using the distance formula. His work is shown below. 1. d = StartRoot (6 minus 2) squared + (3 minus 4) squared EndRoot. 2. d = StartRoot (4) squared + (negative 1) squared EndRoot. 3. d = StartRoot 16 + 1 EndRoot. 4. d = StartRoot 17 EndRoot Analyze George’s work. Is he correct? If not, what was his mistake? Yes, he is correct. No, he substituted values in the wrong places. No, he didn’t use the proper order of operations. No, he evaluated the powers incorrectly. will mark brainliest
Answer:
Yes, he is correct
Step-by-step explanation:
d = sqrt[(6-2)² + (3-4)²]
d = sqrt[4² + (-1)²]
d = sqrt(16 + 1)
d = sqrt(17)
Answer:
A
Step-by-step explanation:
Yes he is correct.
he didn't substitute the values in the wrong places.
he did use the proper order of operations.
he didn't evaluate the powers incorrectly.
Therefore, A is correct.
Convert the angle \theta=260^\circθ=260
∘
theta, equals, 260, degrees to radians.
Express your answer exactly.
\theta=θ=theta, equals
radians
Question:
Convert the angle θ=260° to radians.
Express your answer exactly.
θ = ___ radians
Answer:
260° = 13π/9 or 4.54 rad
Step-by-step explanation:
Given
θ=260°
Required
Convert from degree to radians
To convert an angle in degrees to radians, we simply follow the steps below.
1° = 1 * π/180 rad
Replace the 1° with x
So,
x° = x * π/180 rad.
Now, we assume that x = 260
This means that we substitute 260 for x. This gives
260° = 260 * π/180
260° = 260π/180
Divide numerator and denominator by 20
260° = 13π/9
We can leave the answer in this form or solve further.
Take π as 22/7. This gives
260° = 13/9 * 22/7
260° = 286/63
260° = 4.5396825397
260° = 4.54 rad (Approximated)
The value of an angle 260 degree into radians is,
⇒ 260 degree = 13π/9 radians
WE have to given that,
To convert an angle 260 degree into radians.
Now, WE know that;
1 degree = π/180 radians
Hence, We can convert an angle 260 degree into radians as,
1 degree = π/180 radians
260 degree = 260 x π/180 radians
260 degree = 13π/9 radians
Thus, WE get;
260 degree = 13π/9 radians
Learn more about the measurement unit visit:
https://brainly.com/question/777464
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We conduct a study to determine whether the majority of community college students plan to vote in the next presidential election. We choose a significance level of 0.05. We survey 650 randomly selected community college students and find that 54% of them plan to vote. The P-value is 0.02. H0: 50% of community college students plan to vote in the next presidential election. Ha: More than 50% of community college students plan to vote in the next presidential election. What can we conclude
Answer:
we can conclude that more than 50% of community college students plan to vote in the next presidential election
Step-by-step explanation:
Decision Rule
If;
P-value > significance level --- accept Null hypothesis
P-value < significance level --- reject Null hypothesis
Z score > Z(at 95% confidence interval) ---- reject Null hypothesis
Z score < Z(at 95% confidence interval) ------ accept Null hypothesis
Null hypothesis H0: 50% of community college students plan to vote in the next presidential election
H0: p = 0.50
Ha: More than 50% of community college students plan to vote in the next presidential election
Ha: p > 0.50
P-value = 0.02
From the decision rule;
Since the p-value for this study is less than the significance level.
0.02 < 0.05
So, we reject the null hypothesis, there is enough evidence to reject the null hypothesis. We thereby accept the alternative hypothesis.
Therefore, we can conclude that more than 50% of community college students plan to vote in the next presidential election
9x-3=87 what is the anwser
Answer:
x=10
Step-by-step explanation:
9x-3=87
add 3 to both sides
9x=90
divide by 9 on both sides
x=10
Answer:
x=10
Step-by-step explanation:
9x-3=87
you add 3 to both sides
9x-3(+3)=87(+3)
which equals
9x=90
90/9= 10
answer:
x =10
I hope this helped!
3+ 5x = 3
Slove for x
Answer:
x=0
Step-by-step explanation:
3+ 5x = 3
Subtract 3 from each side
3-3+ 5x = 3-3
5x = 0
divide each side by 5
5x/5 = 0/5
x = 0
Two datasets arranged in descending order are; {8, x, 4,1} and {9, y, 5,2}. If the medians of
the two given datasets are equal, what is the value of (y − x)
2
?
Answer:
1Step-by-step explanation:
A data arranged in descending order is a data arranged from the biggest to the smallest. The medisn of the data sets is the value at the middle of the dataset after rearrangment.
For the dataset {8, x, 4,1}, the median will be x and 4. Since we have two median values, we will take their average as shown
Median(1) = [tex]\frac{x+4}{2}[/tex]... 1
Simialrly for dataset {9, y, 5,2}, the median will be y and 5.
Median(2) = [tex]\frac{y+5}{2}[/tex] ...2
Since the medians of the two given datasets are equal, we will equate equation 1 and 2 and calculate for y-x as shown;
[tex]\frac{x+4}{2} = \frac{y+5}{2}[/tex]
[tex]x+4 = y+5\\x-y = 5-4\\x-y = 1\\y-x = -1[/tex]
Therefore y-x = -1
(y-x)² = (-1)²
= 1
Gibbs Baby Food Company wishes to compare the weight gain of infants using its brand versus its competitor’s. A sample of 40 babies using the Gibbs products revealed a mean weight gain of 7.6 pounds in the first three months after birth. For the Gibbs brand, the population standard deviation of the sample is 2.3 pounds. A sample of 55 babies using the competitor’s brand revealed a mean increase in weight of 8.1 pounds. The population standard deviation is 2.9 pounds. At the .05 significance level, can we con- clude that babies using the Gibbs brand gained less weight? Compute the p-value and interpret it.
Answer:
[tex]z=\frac{(7.6-8.1)-0}{\sqrt{\frac{2.3^2}{40}+\frac{2.9^2}{55}}}}=-0.936[/tex]
The p value can be founded with this formula:
[tex]p_v =P(z<-0.936)=0.175[/tex]
Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor
Step-by-step explanation:
Information given
[tex]\bar X_{1}=7.6[/tex] represent the mean for Gibbs products
[tex]\bar X_{2}=8.1[/tex] represent the mean for the competitor
[tex]\sigma_{1}=2.3[/tex] represent the population standard deviation for Gibbs
[tex]\sigma_{2}=2.9[/tex] represent the sample standard deviation for the competitor
[tex]n_{1}=40[/tex] sample size for the group Gibbs
[tex]n_{2}=55[/tex] sample size for the group competitor
[tex]\alpha=0.05[/tex] Significance level provided
z would represent the statistic
Hypothesis to verify
We want to check if babies using the Gibbs brand gained less weight, the system of hypothesis would be:
Null hypothesis:[tex]\mu_{1}-\mu_{2}=0[/tex]
Alternative hypothesis:[tex]\mu_{1} - \mu_{2}< 0[/tex]
The statistic would be given by:
[tex]z=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}}[/tex] (1)
Replacing the info given we got:
[tex]z=\frac{(7.6-8.1)-0}{\sqrt{\frac{2.3^2}{40}+\frac{2.9^2}{55}}}}=-0.936[/tex]
The p value can be founded with this formula:
[tex]p_v =P(z<-0.936)=0.175[/tex]
Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor
The area of the base of a cylinder is 45 square inches and its height is 11 inches. A cone has the same area for its base and same height. What is the volume of the cone?
Answer:
165 in³
Step-by-step explanation:
Volume of a cone is:
V = ⅓Ah
where A is the area of the base and h is the height.
V = ⅓ (45 in²) (11 in)
V = 165 in³
solve the system of equations
Answer:
r=idk
y=idk
Step-by-step explanation:
A random sample of 95 vehicles is taken from a large parking lot at an office park. Below is the type of each vehicle, and whether it is owned or leased by the driver. A chi-square test will be conducted to determine if there is an association between type of vehicle and method of obtaining the vehicle. Which of the following expressions represents the expected count of leased SUVs? Car 29 21 Owned Leased SUV 20 10 1 Truck 1 4 O (A) 10 (B) (C) (35)(30) (D) (10-1.1.1) 111 (E) (11.1-10)
Answer:
C
Step-by-step explanation:
The expression that represents the expected count of leased SUVs from the given data is; C: (35)(30)/95
How to utilize chi square test?We are given;
sample size; n = 95 vehicles
From the table gotten online, we see that;
There are 20 owned SUV's and 10 leased SUV's
From the chi square results gotten from online calculator, we can say that; the expected count of leased SUVs is gotten as;
(35)(30)/95
Therefore we can conclude that the expression that represents the expected count of leased SUVs is option C.
Read more about Chi Square Test at; https://brainly.com/question/4543358
how do i solve this?
Answer:
Step-by-step explanation:
Prendendo come esempio la porta disegnata da un tuo compagno, dimmi quanta vernice ti serve per dare due mani alla porta.
Sapendo che un barattolo contiene 0,75 litri di vernice e che si verniciano circa 9mq, quante porte come quella nel disegno riesci a verniciare?
Answer:
english please
Step-by-step explanation:
Answer:
English plz
Step-by-step explanation:
If Sarah irons 12 shirts in 18 minutes. Write a two linear equation that represents the number of small shirts she can iron in any given time interval (t).
Answer:
s = 2/3t
Step-by-step explanation:
For some time (t) in minutes, Sarah can iron "s" shirts:
s = (12/18)t
s = 2/3t
_____
If you need to, you can start with a proportion:
shirts/minutes = s/t = 12/18
Then multiply by t to get the above equation.
Ms. Robinson gave her class 12 minutes to read. Carrie read 5 ½ pages in that time. At what rate, in pages per hour, did Carrie read?
Answer:
27.5 pages read per hour
Step-by-step explanation:
a circle with area 36pi has a sector with a central angle of 48°. what is the area of the sector?
Answer:4.8π
Step-by-step explanation:
Φ=48°
Area of circle=36π
Area of circle=π x r^2
36π=πr^2
Dividing both sides by π we get
r^2=36π/π
r^2=36
Take them square root of both sides
√(r^2)=√(36)
r=6
Area of sector=Φ/360 x π x r x r
Area of sector=48/360 x π x 6 x 6
Area of sector=(48xπx6x6)/360
Area of sector=1728π/360
Area of sector=4.8π
Tyrianne next solved a quadratic equation her work shown below in which step did Tyrianne make an error 1/2(x+4)^2-3=29
Step 1
Answer:
step 2
Step-by-step explanation:
khan academy
