One electrician charges a flat fee of $55 to come to the house, $20 per
hour, and the cost of all materials. If h represents the number of hours that
the electrician spent fixing the problem, C represents the total charge, and m
represents the cost of materials, which of the following equations shows how
to determine the total fee charged?
C=20+55h+m
C=mh+55 +20
C=(55+20)h+m
C=55+20h+m
Answer:
C=55+20h+m
Step-by-step explanation:
C = flat fee + dollars/hour + material expense
C = 55 + 20h + m
Hope this helps
What do "Opposites" mean in Elimination?
Answer:
Step-by-step explanation:
what is the meaning of eliminated
1) 14 units2 2) 16 units2 3) 17 units2 4) 19 units2
Answer:
4th option: 19 units2Step-by-step explanation:
The given figure can be divided as (i) upper rectangle, (ii) lower rectangleThen,
(i) Breadth of upper rectangle = 2 units
Length of upper rectangle = 8 - 1 = 7 units
Therefore,
Area of the upper rectangle = 7 × 2 = 14 units2
(ii) Breadth of lower rectangle = 1 unit
Length of lower rectangle = 5 units
Therefore,
Area of the lower rectangle = 5 × 1 = 5 units2
Since,
Area of the figure is = Area of upper rectangle + Area of lower rectangle
= 14 units2 + 5 units2
= 19 units2 (Ans) (4th option)
Suppose you were to draw all possible samples of size 36 from a large population with a mean of 650 and a standard deviation of 24. You then compute the sample mean x-bar for each sample. From the long list of sample means, you create the sampling distribution of the sample mean, assigning probabilities to all possible values of x-bar.
Required:
What is the shape of the sampling distribution you would expect to produce?
Answer:
By the Central Limit Theorem, it is approximately normal with mean 650 and standard deviation 4.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Mean of 650 and a standard deviation of 24.
This means that [tex]\mu = 650, \sigma = 24[/tex].
Sample of 36:
This means that [tex]n = 36, s = \frac{24}{\sqrt{36}} = 4[/tex]
What is the shape of the sampling distribution you would expect to produce?
By the Central Limit Theorem, it is approximately normal with mean 650 and standard deviation 4.
If Jasmine's gross earnings are $400 per week, then what is her net weekly pay after
12% is deducted for taxes?
$352
$448
$388
$48
Mrs. Yamaguchi's class weighed the potatoes that they grew in their garden and recorded the data in a table. What are the least and greatest weights of the potatoes in the data set? Weights of Potatoes (in pounds) 1 4 3 8 5 8 1 2 5 8 1 2 1 2 3 4 1 4 1 8 3 4 1 2 3 8 1 2 3 4 3 8 The least weight is the greatest weight is please help me and can you explain how you did this to
Answer:
1/8 has 1, 1/4 has 2, 3/8 has 3, 1/2 has 4, 5/8 has 2, and 3/4 has 3. Step-by-step explanation:
The least weight is
(one-sixteenth)
pounds and the greatest weight is
(three-fourths)
pounds.
Solve for x. Round to the nearest tenth
Answer:
D
Step-by-step explanation:
Use the image below- super helpful to know, memorize
Timmy is building a new website. Right after he starts, he has 2 visitors. He expects his visitors to increase according to a model he developed for his other websites growth, v(t)=10t+b, where b is the number of visitors right afte he starts building his website, t is the time since he stgarted building his website in weeks and v(t) is the nunber of total visitors after t weeks.
How many visitors does he get 4 weeks after starting to build his website?
How any new visitors does he get per week?
Answer:
He gets 42 visitors 4 weeks after starting to build his website.
He gets 10 new visitors per week.
Step-by-step explanation:
Equation for the number of visitors:
The equation for the number of visitors Timmy's new website receives after t weeks is:
[tex]v(t) = 10t + b[/tex]
In which b is the number of visitors rightly after he starts.
Timmy is building a new website. Right after he starts, he has 2 visitors.
This means that [tex]b = 2[/tex], so:
[tex]v(t) = 10t + 2[/tex]
How many visitors does he get 4 weeks after starting to build his website?
This is v(4). So
[tex]v(4) = 10(4) + 2 = 40 + 2 = 42[/tex]
He gets 42 visitors 4 weeks after starting to build his website.
How any new visitors does he get per week?
After 0 weeks:
[tex]v(0) = 10(0) + 2 = 0 + 2 = 2[/tex]
After 1 week:
[tex]v(1) = 10(1) + 2 = 10 + 2 = 12[/tex]
2 weeks:
After 2 week:
[tex]v(2) = 10(2) + 2 = 20 + 2 = 22[/tex]
22 - 12 = 12 - 2 = 10
He gets 10 new visitors per week.
how is y=2x^2-8x+9 rewritten in vertex form.
9514 1404 393
Answer:
y = 2(x -2)^2 +1
Step-by-step explanation:
Start by factoring the leading coefficient from the x-terms.
y = 2(x^2 -4x) +9
Now identify the coefficient of x, -4, and figure half of that: -2. Square this number and add it inside the parentheses. At the same time, subtract the equivalent value outside parentheses. (The leading coefficient must be taken into account.)
y = 2(x^2 -4x +4) +9 -2(4)
Put in the desired form.
y = 2(x -2)^2 +1
This matches vertex form ...
y = a(x -h)^2 +k . . . . . . . . . vertical scale factor 'a'; vertex (h, k)
Which of the following is not a net for a rectangular prism? PLEASE HELP!!!
Answer:
It's D
Step-by-step explanation:
I traced all of them, cut them out and folded them. D is the only one that doesn't make a full cube. :)
Women are recommended to consume 1700 calories per day. You suspect that the average calorie intake is larger for women at your college. The data for the 14 women who participated in the study is shown below:
1566, 1948, 1604, 1557, 1760, 1786, 1879, 1930, 1671, 1578, 1822, 1770, 1929, 1928
Assuming that the distribution is normal, what can be concluded at the
α
= 0.10 level of significance?
Answer:
theres only a? wheres the rest?
What is the value of x? Please help
Answer: x = 21
Step-by-step explanation:
5x + (3x + 12) = 180
8x + 12 = 180
8x = 168
168/8 = 21
A team of five people is formed from 8boys and 5 girls.the probability that the team contains at least 3girls is?
Answer:
60%
Step-by-step explanation:
3÷5= .6
.6 = 60%
Answer:
60%
Step-by-step explanation:
find the length of the median and the missing base. Be sure to show all your work. NO LINKS!!!
Answer:
The bottom is 11
The median is 12
Step-by-step explanation:
The median is the average of the top and bottom
(13+ 2x-3) /2 = 4x-16
Combine like terms
(10+2x)/2 = 4x-16
Divide by 2
5+x = 4x-16
Subtract x from each side
5+x-x = 4x-16-x
5 = 3x-16
Add 16 to each side
5+16 = 3x-16+16
21 = 3x
Divide by 3
21/3 = 3x/3
7 =x
The bottom is 2x-3 = 2*7-3 = 14-3 = 11
The median is 4x-16 = 4*7-16 = 28 -16 = 12
Answer:
YZ = 12, ML = 11
Step-by-step explanation:
The median is half the sum of the parallel bases, that is
YZ = [tex]\frac{KN+LM}{2}[/tex]
4x - 16 = [tex]\frac{13+2x-3}{2}[/tex] ( multiply both sides by 2 to clear the fraction )
8x - 32 = 10 + 2x ( subtract 2x from both sides )
6x - 32 = 10 ( add 32 to both sides )
6x = 42 ( divide both sides by 6 )
x = 7
Then
YZ = 4x - 16 = 4(7) - 16 = 28 - 16 = 12
ML = 2x - 3 = 2(7) - 3 = 14 - 3 = 11
ILL MARK U BARINLIEST HELP!!!!!!!!!!!!
A ball is tossed into the air. The quadratic function h(t) = -16t^2 + 14t + 5 represents the situation, where t represents the time, in seconds, after the ball is tossed and h(t) represents the height of the ball, in feet. Which of the following statements is NOT true
A- the constant term represents the height from which the ball was tossed.
B- The factors of the function can help determine when the ball hit the ground.
C- The leading coefficient indicates that the graph of the parabola that represents the ball's height over time will open in an upward direction.
D- The graph of the parabola that represents the ball's height over time will have a relative maximum.
60mi = ?km
please show work
Answer:
96.56064 km
Step-by-step explanation:
1 mi = 1.609344 km
60 mi = 60 * 1.609344 km = 96.56064 km
Answer:
96 km
Step-by-step explanation:
mi /0.62137 = km
60 / 0.62137 = 96.56064 km
The Pyramid arena is 321 feet tall and has a square base of sides 591 feet. Find the volume of pyramid.
Answer:
Use MATH.WAY, it will help with any math problem
Step-by-step explanation:
Answer needed! Answer needed! Answer needed!
Answer:
Points: (1,-1) (4,-1) (4,-3)
Step-by-step explanation:
Hope this helps
Answer:
(1,-1) (4,-1) (4,-3)
Step-by-step explanation:
bye have a good day
Solve for x. 4x + 22 = 6(x+3)
Answer:
[tex]x = 2[/tex]
Step-by-step explanation:
Let's solve:
[tex]4x+22=6(x+3)[/tex]
Step 1: Simplify both sides of the equation.
[tex]4x+22=6(x+3) \\ 4x+22=(6)(x)+(6)(3)\\ (Distribute) \\ 4x+22=6x+18[/tex]
Step 2: Subtract 6x from both sides.
[tex]4x+22−6x=6x+18−6x\\ −2x+22=18[/tex]
Step 3: Subtract 22 from both sides.
[tex]−2x+22−22=18−22 \\ −2x=−4[/tex]
Step 4: Divide both sides by -2.
[tex] \frac{ - 2x}{ - 2} = \frac{ - 4}{ - 2} \\ x=2[/tex]
Answer:2
Step-by-step explanation:
Which of the following is always one of the data values in a data set?
Answer:
mean
Step-by-step explanation:
1. The mean is always one of the data values. 3. The mode is always one of the data values.
Answer: The mode.
Step-by-step explanation: The answer to this question is the mode, the answer is mode because there might be some numbers that show up the same amount of times like a different number. So there might be TWO modes :’).
Here are the definitions for mean, median, mode, and range:
Mean (the “average”) —> the sum of the numbers in the data set divided by the amount of numbers in the data set.
Median (the “middle”) —> the number in the middle of the data set, when the numbers are placed in numerical order.
Mode (the “most”) —> the number in the data set that shows up the most often.
Range —> the difference between the data set’s largest number and the data set’s smallest number.
——————————————————————
Hope this helps!!
What is the perimeter of the rectangle?
5 feet
6 feet
12 feet
36 feet
(Pls answer 70 points)
Answer:
12 ftExplanation:
2(1+5) = 2×6 = 12
Can someone help me please???
Simplify.
(x^5)^4
Answer:
x^20 please mark me brainliest
Step-by-step explanation:
14 deg 37 deg what's the missing angle
Answer:
129 degrees
Step-by-step explanation:
Lana needs to find the. to find this, she could list. of both numbers, and circle each bumber that appeas in both lists. she should then identifiy the. number circled in both list
Greatest common factor
Least common factor
Factors
Multiples
Least
Greatest
2
4
24
48
Find the length of the unknown side. Round your answer to the nearest tenth.
Answer:
A. 9.4 m
Step-by-step explanation:
b²=13²-9²
= 169 - 81
= 88
b =√88 = 9.4 m
Answer:
bgh12.hcv2.3.23.52g3.2153.0.76810636302233..32.37gh
Step-by-step explanation:
Which of the following statements are true? Check all that apply.
The speed of a baseball crossing home plate after being pitched depends on
its initial velocity. If thrown at 74 mph, the speed over home plate will be 72.2
mph. If thrown at 50 mph, the speed over home plate will be 44.7 mph.
A. Speed(44.7) = 50
B. Speed(72.2) = 74
C. Speed(50) = 44.7
D. Speed(74) = 72.2
Answer:
D. Speed (74) = 72.2
Step-by-step explanation:
The focus of a parabola is (0, -3) and the directrix is y = 3. What is the equation of the parabola?
Answer:
The equation of the parabola is [tex]y = -12\cdot x^{2}[/tex].
Step-by-step explanation:
Since the directrix is of the form [tex]y = a[/tex], the parabola is vertical. The vertex of the parabola ([tex]V(x,y)[/tex]) is the midpoint between the focus ([tex]F(x,y)[/tex]) and a point of the directrix ([tex]P(x,y)[/tex]), that is to say:
[tex]V(x,y) = \frac{1}{2}\cdot F(x,y) + \frac{1}{2}\cdot P(x,y)[/tex] (1)
If we know that [tex]F(x,y) = (0, -3)[/tex] and [tex]P(x,y) = (0, 3)[/tex], then the coordinates of the vertex of the parabola:
[tex]V(x,y) = \frac{1}{2}\cdot (0, -3) + \frac{1}{2}\cdot (0, 3)[/tex]
[tex]V(x,y) = (0, 0)[/tex]
The vertex factor ([tex]p[/tex]) is the distance of the focus with respect to the vertex:
[tex]p = \sqrt{[F(x,y)-V(x,y)]\,\bullet \,[F(x,y)-V(x,y)]}[/tex] (2)
If we know that [tex]F(x,y) = (0, -3)[/tex] and [tex]V(x,y) = (0, 0)[/tex], then the vertex factor is:
[tex]p = \sqrt{0^{2}+(-3)^{2}}[/tex]
[tex]p = -3[/tex]
The equation of the parabola in the vertex form is described below:
[tex]y - k = 4\cdot p \cdot (x-h)^{2}[/tex] (3)
Where:
[tex]x[/tex] - Independent variable.
[tex]y[/tex] - Dependent variable.
[tex]h, k[/tex] - Coordinates of the vertex.
If we know that [tex](h,k) = (0, 0)[/tex] and [tex]p = -3[/tex], then the equation of the parabola is [tex]y = -12\cdot x^{2}[/tex].
MY BRAIN IS GONNA EXPLODE I NED AWNSER, I WILL MARK BRAINLEIST!!!!!
Answer:
I’m pretty sure the answer is 1/4.
Step-by-step explanation:
Plz help me well mark brainliest!....
Please help!!! I am stressed so much!!
Answer:
You have to simplify the fraction and turn it into a decimal.
Step-by-step explanation:
Meaning: Make the fraction smaller and turn it into the correct decimal.
EXAMPLE:
2/4 simplified is 1/2
1/2 is equal to 0.50