Stella needed to get her computer fixed. She took it to the repair store. The technician
at the store worked on the computer for 3.25 hours and charged her $75 for parts.
The total was $188.75. What was the cost of labor, per hour?
9514 1404 393
Answer:
$35 per hour
Step-by-step explanation:
The total charge is the sum of costs of parts and labor. If h is the cost of a labor hour, then we have ...
188.75 = 75 + 3.25h
113.75 = 3.25h . . . . . . . . subtract 75
113.75/3.25 = h = 35 . . . divide by the coefficient of h
The cost of labor, per hour, is $35.
Using the formula below, calculate the z-score for the listed data points. z-score: zx = x − μ σ z1 = z5 = z6.5 =
Answer:
z1 = -1.95
z5 = 0.05
z6.5 = 0.8
Step-by-step explanation:
The value of the z score for a mean of 4 and standard deviation is 1.
What is Z score?The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (x - μ)/σ
Where x is the raw score, μ is the mean and σ is the standard deviation.
Let us assume that μ = 4, σ = 2, hence for x = 6:
z = (6 - 4) / 2 = 1
The value of the z score for a mean of 4 and standard deviation is 1.
Find out more on Z score at: https://brainly.com/question/25638875
The temperature outside changed from 79°F to 44°F over a period of five days. If the temperature changeu
amount each day, what was the daily temperature change?
OA. 35°F
OB. -7°F
ОС.
-35°F
OD. 7°F
Answer:
B: -7°F
Step-by-step explanation:
79-44=35
Because its over a period of five days we would divide
35÷5=7
Since the numbers are going down its negative
-7
Answer:-7
Step-by-step explanation:
Emily bought 36 yards of fabric to make curtains.
How many inches of fabric did Emily buy?
Emily bought
Inches of fabric.
Answer:
36 yards = 1,296 inches.
Need math helps plzzzz no links or imma report u 20 points plzzz helps
Answer:
the answer is (c)
Step-by-step explanation:
-(-1)-13= 1-13=-12
Answer:
-1
Step-by-step explanation:
You need to take -13 behind the = sign and it will become +13. Now -12+13=-1. Again it is -x because of which 1 will be divided by - and the answer will be -1
Can someone help me with these questions?
Rob's office recycled a total of 12 kilograms of paper over 2 weeks. How many weeks will it
take Rob's office to recycle a total of 18 kilograms of paper? Assume the relationship is
directly proportional.
weeks
HOW MANY WEEKS ???
Answer:
3 unless you're adding onto the 12 kilograms, then only 1
Step-by-step explanation:
12 + 3y = 21
Expression or Equation:
Answer:
equation
Step-by-step explanation:
12 + 3y = 21
-12. -12
__________
3y = 9
y = 3
Find the CIRCUMFERENCE of a circle with the DIAMETER of 11 ft.
HELP PLS
Answer:
half of 11 is: 5.5
5.5 x 3.14 x 2 = 34.54
What did the inventor of the 10-ton truck so often say?
Answer:
He often said "Diesel Be Good"
Step-by-step explanation:
solve the system by substitution 3x-y=10 2x=y
Answer
X=10 and y=20
Step-by-step explanation:
since y=2x, you need to substitute that into the equation to get:
3x-(2x)=10
And evaluate:
x=10
Then substitute 10 into the equation: 2x=y:
2(10)=y
evaluate:
20=y
Now go back to the original equation to check your answer and substitute the values in:
3(10)-(20)=10
30-20=10
10=10
Whats the slope using rise/run?
Answer:
-4,1
Step-by-step explanation:
Y is at -1,1
X is at -5,0
subracting we get -4,1
since it’s rise over run
-4,1
so -4
Shellac O'Lean, a freshman on your school's football team, is 6 ft tall and weighs 140 lb. Since he would rather play basketball, he plans to grow to 7 ft 1 in., the same height as Shaquille O'Neal, his idol. If Shellac scales geometrically as he grows, how much can he expect to weigh? (O'Neal weighs 325 lb. Round your answer to the nearest whole number.)
Answer:
At 7 ft. 1 in., Shellac can expect to weigh approximately 165 lb
Step-by-step explanation:
The relationship between the heights and the weights of the freshman are presented as follows;
The weight of the freshman at 6 ft. = 140 lb
The height to which he plans to grow = 7 ft. 1 in.
Given that Shellac scales geometrically as he grows, then the height to weight ratio is constant
Let 'y' represent Shellac's weight when his height is 75 ft. 1 in., we have;
[tex]\dfrac{6 \, ft.}{140 \ lb} = \dfrac{7 \, ft. \ 1 \, in. }{y}[/tex]
6 ft. = 72 in.
7 ft. 1 in. = 85 in.
Therefore, we get;
[tex]\dfrac{72 \ in.}{140 \ lb} = \dfrac{85 \ in. }{y}[/tex]
[tex]y ={85 \ in. }\times \dfrac{140 \, lb}{72 \ in.} = 165.2 \overline 7 \, lbs[/tex]
Shellac's expected weight given to the nearest whole number when his height is 7 ft. 1 in. ≈ 165 lb.
A line with a slope of 5 passes through the point (0,0). What is its equation in slope-intercept form?
Answer:
y=5x or y=5x+0
Step-by-step explanation:
there is a slope of 5 and it has no setoff
What is the equation of the graphed line written in
standard form?
2x + 3y = -6
2x + 3y = 6
y= -2/3x - 2
v= 2/3x - 2
Answer:
A. 2x + 3y = -6
Step-by-step explanation:
[tex](-3,0) (0,-2)[/tex]
[tex]slope:\frac{-2-0}{0+3} =\frac{-2}{3}[/tex]
[tex]y-0=\frac{-2}{3} (x+3)[/tex]
[tex]3y=-2x-6[/tex]
[tex]3y+2x+6=0[/tex]
[tex]2x+3y=-6[/tex]
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hope it helps...
have a great day!!
At a certain time of day, the sun shines on a large flagpole causing a shadow that is twice as long as the flagpole is tall what is the height of the flagpole to the nearest tenth of a foot?
350ft
Answer:
156.5
Step-by-step explanation:
The height of the flagpole to the nearest tenth of a foot is 156.5 ft.
Word Problems Using Pythagoras Theorem:Word Problems involving the use of the Pythagoras theorem need careful understanding to discern the complexity of the variables given, the using the Pythagoras theorem to solve the eqaution.
The Pythagoras Theorem states that the sum of the squares of the opposite side and the adjacent side is equal to the hypotenuse square.
From the information;
The large flagpole height = adjacent = xThe shadow of the flagpole = opposite = 2xThe hypotenuse = 350 ftUsing the Pythagoras theorem, we have;
hyp² = opp² + adj²
350² = (2x)² + x²
350² = 4x² + x²
122500 = 5x²
x² = 122500/5
x² = 24500
x = √24500
x = 156.5 ft
Therefore, we can conclude that the height of the flagpole is approximately 156.5 ft.
Learn more about word problems here:
https://brainly.com/question/13818690
A bag contains 9 blue marbles and 36 green marbles. If a representative sample contains 3 blue
marbles, then how many green marbles would you expect it to contain? Explain.
Answer:
It is 12 green marblesStep-by-step explanation:
[tex] \frac{9}{3} = 3 \\ \\ \frac{36}{x} = 3 \\ x = \frac{36}{3} \\ x = 12[/tex]
I hope that is useful for you :)
HELP
PLZZZ Z DONT GIVE ME A LINK
Answer:
These relationships are realted because the variable is multiplied by ten to get the function.
9cm: 90mm
12 1/4cm: 122.5mm
50cm: 500mm
88.49cm: 884.9mm
By the way, can you follow me on Brainly?
Thanks!
What is the probability that someone in your class wants the New England Patriots to win
Answer:
Step-by-step explanation:
It all depends on how many people are in your class.
To calculate probability
Determine a single event with a single outcome.
Identify the total number of outcomes that can occur.
Divide the number of events by the number of possible outcomes.
To determine the probability, Use the formula
What is the formula of probability?
P(A) is the probability of an event “A” n(A) is the number of favourable outcomes. n(S) is the total number of events in the sample space.
P(A | B) = P(A∩B) / P(B)
Which choices are equivalent to the exponential expression below? Check all that apply (5/3)^3
Answer:
D is the answer
Step-by-step explanation:
If ° (3n-4)2 * = 310 then n= ?
Answer:
n=53
Step-by-step explanation:
(3n-4)2
distribute the 2
you get 6n-8
plug in 53 into n 5(53)-8 and then you times 6 and 53 and get 318 subtract 8 from that and you get 310
help me pls!! giving brainliest and 5 stars
Answer:
A reflection over the line y = x followed by a translation up 3 units
Step-by-step explanation:
Since this is a multiple choice question, let's test each answer out.
First scenario:
"A reflection over the y-axis followed by a translation right 3 units and down 4 units"
Reflect segment XY over the y-axis, we get segment XY between x = 2 and x = 6, on y = 5 line.Translate right 3 units, we get segment XY on y = 5 line, between x = 5 and x = 9.Translate down 4 units, we get segment XY on y = 1 line, between x = 5 and x = 9.Resulting segment does not match segment X'Y', this answer is incorrect
Second scenario:
"A reflection over the line y = x followed by a translation up 3 units"
Reflect segment XY over y = x line, we get segment XY, between y = -2 and y = -6, on x = 5 line.Translate up 3 units, we get segment XY on x = 5 line, between y = 1 and y = -3.Resulting segment matches segment X'Y', this is the correct answer.
Can someone please help me answer this question asap thank you . No links please and thank you .
ratios that are equivalent to 9:6.
Answer:
3:2
Step-by-step explanation:
Answer:
3:2 , 18:12 , 27:18
Step-by-step explanation:
There are endless ratios that are equal to 9:6.
Such as 3:2 , 18:12 , and 27:18.
To find equivalent ratios, simply divide or multiply the two numbers in the ratio by the same number.
For example, the ratio is 9:6.
9/3 = 3
And, 6/3 =2
So therefore an equivalent ratio is 3:2.
The following table is from rolling a six sided die 120 times.
Roll 1 2 3 4 5 6
Frequency 15 18 20 17 24 26
What is the experimental probability of rolling anything other than a 2?
Answer: did you ever get the answer ?
Step-by-step explanation:
7428.358146 round to nearest cent
Answer:
7428.40
Step-by-step explanation:
Solve: 16х2 - 81 = 0. (2 points)
Ox = 4, 9
Ox= -4, -9
ООО
9
х=
О
х
81
16
16
HELP PLEASEEE
Answer:
x=9/4,x=-9/4
Step-by-step explanation:
16x^2−81=0
Step 1: Add 81 to both sides.
16x^2−81+81=0+81
16x^2=81
Step 2: Divide both sides by 16.
16x^2/16 = 81/16
x^2 = 81/16
Step 3: Take square root.
x = ±√81/16
x=2.25,x=−2.25
Convert to fraction form.
x=9/4,x=-9/4
It's for my sister she wants me to do it HELP HER
Answer:
I think its the second one
Step-by-step explanation:
Sorry if im wrong
Sinx = [tex]\frac{3}{8}[/tex]
Find cosx and tanx
Answer:
Cos(x) = sqrt(55) / 8; tan(x) = 3/sqrt(55)
Step-by-step explanation:
Sine is opposite over hypotenuse. So we get that the opposite is 3 and the hypotenuse is 8. To find the adjacent (which we'll need for cosine and tangent), we can use pythagoras' theorem. Therefore, 8^2 = 3^2 + A^2, where A is the adjacent. A then must equal sqrt(64-9) = sqrt(55).
Cosine is adjacent over hypotenuse, which is then sqrt(55) / 8. Tangent is opposite over adjacent, which is then 3 / sqrt(55) or (sqrt55)*3/55
What is the volume of the prism, in cubic centimeters?
please help me
Answer:
4cm ×cmohx9ufochohcohcohc