1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
2 years ago
6

When wiring a house, an electrician knows that the time she will take is given by the formula Time= 2 hours + 12 minutes per lig

htswitch. She charges her customers a call out fee of £35, plus £20 per hour. How much should a customer be charged for wiring a house with 10 lightswitches?​

Mathematics
2 answers:
agasfer [191]2 years ago
7 0

Answer:

Step-by-step explanation:

Time = 2 hrs + 12 min (10) = 4 hrs.

Cost = 35 + 20*4

Cost = 35+80

Cost = 115

lapo4ka [179]2 years ago
3 0

9514 1404 393

Answer:

  £155

Step-by-step explanation:

We can write the function describing the charges as a composition.

  t(s) = 2 + 12/60s = 2 +s/5 . . . . . hours for s switches

  c(h) = 35 +30h . . . . . . . . . . . . . charge for h hours

Then the charge for s switches is ...

  f(s) = c(t(s)) = 35 +30(2 +s/5) = 35 +60 +6s

  f(s) = 95 +6s . . . . . . . charge for installing s switches

The charge for 10 switches is then ...

  f(10) = 95 +6·10 = 95 +60

  f(10) = 155 . . . . pounds

The electrician should charge her customer £155 for wiring a house with 10 switches.

You might be interested in
Calculate the area of the square shown below (HARD)
sergey [27]
Check the picture below.

recall that in a square, all sides are equal, so if we make b = a, then we get that for one side, also recall that the area of a rectangle is length*width, so in this case,

\bf \stackrel{\textit{area of the square}}{\stackrel{length}{5\sqrt{2}}\cdot \stackrel{width}{5\sqrt{2}}}\implies 25(\sqrt{2})^2\implies 25\cdot 2\implies 50

7 0
3 years ago
Can someone help me learn to solve this?
kondaur [170]

Answer:

x = 110°

Step-by-step explanation:

Given that AB = AD then Δ ABD is isosceles and the base angles are congruent, that is

∠ ABD = ∠ ADB = 35°

The sum of the 3 angles in the triangle = 180°, that is

x + 35° + 35° = 180°

x + 70° = 180° ( subtract 70° from both sides )

x = 110°

5 0
3 years ago
daniel’s print shop purchased a new printer for 35,000 each year it depreciates at a rate of 5% how much will the printer be wor
frutty [35]

Answer:

$23,219.72

Step-by-step explanation:

ab^x

a: initial value

b: value remaining after depreciation per year (in percentage)

x: number of years that have passed

35000(0.95)^8= 23219.7151

Round to the nearest hundredth value:

About $23219.72

4 0
3 years ago
Which number is between 5/6 and 13
UNO [17]
1-12 is between 5/6 and 13.
6/6 is after 5/6 and that just equals 1
4 0
3 years ago
Sam solved the equation 2(x - 4) = 4x + 3x + 12. His work is shown.
Paha777 [63]
Step 2 because he/she took out the parentheses when he/she wasn’t supposed to!
8 0
3 years ago
Other questions:
  • When Adam verified his answer, it didn't work What
    6·2 answers
  • Every evening Jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she
    14·1 answer
  • Rachel can make 3 bracelets in an hour. Oliver can make only 2 bracelets in an hour, but he already has completed 5 bracelets. E
    8·2 answers
  • I need help with this problem
    8·1 answer
  • A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104
    13·2 answers
  • How many of each angles are in a pentagon
    5·2 answers
  • A statistics teacher conducted an experiment to test whether the use of a new review booklet will improve her students' semester
    12·1 answer
  • One of the Confederation's accomplishments was an arrangement for
    15·1 answer
  • Given the equation below , what is the value of g(0). g(x)=1//2x-3
    15·1 answer
  • 6. If f(x) = -2r2 + x-5, what is f(3)?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!