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
iren2701 [21]
4 years ago
8

A contractor bought 6.4 ft2 of sheet metal. He has used 2.1 ft2 so far and has $77.40 worth of

Mathematics
1 answer:
son4ous [18]4 years ago
8 0

Answer:

$18

Step-by-step explanation:

Given:

6.4x - 2.1x = 77.4

Where,

x = cost of sheet metal per square foot

How much does sheet metal cost per square foot?

6.4x - 2.1x = 77.4

4.3x = 77.4

Divide both sides by 4.3

x = 77.4 / 4.3

= 18

x = $18

Sheet metal per square foot cost $18

You might be interested in
Which figure represents the image of trapezoid LMNP after a reflection across the x-axis? figure A figure B figure C figure D
Andrews [41]

Answer:

figure A

Step-by-step explanation:

it’s in the same cordinates but reflected across the x axis

4 0
3 years ago
Read 2 more answers
Two Tibetan monks are having a race along a straight path. They both start at the same time, and the race ends in a tie. Prove t
Triss [41]
This is so provided that the velocity changes continuously in which case we can apply the mean value theorem. 
<span>Velocity (v) is the derivative of displacement (x) : </span>
<span>v = dx/dt </span>
<span>Monk 1 arrives after a time t* and Monk 2 too. </span>
<span>Name v1(t) and v2(t) their respective velocities throughout the trajectory. </span>
<span>Then we know that both average velocities were equal : </span>
<span>avg1 = avg2 </span>
<span>and avg = integral ( v(t) , t:0->t*) / t* </span>
<span>so </span>
<span>integral (v1(t), t:0->t*) = integral (v2(t), t:0->t*) </span>
<span>which is the same of saying that the covered distances after t* seconds are the same </span>
<span>=> integral (v1(t) - v2(t) , t:0->t*) = 0 </span>
<span>Thus, name v#(t) = v1(t) - v2(t) , then we obtain </span>
<span>=> integral ( v#(t) , t:0->t*) = 0 </span>
<span>Name the analytical integral of v#(t) = V(t) , then we have </span>
<span>=> V(t*) - V(0) = 0 </span>
<span>=> V(t*) = V(0) </span>
<span>So there exist a c in [0, t*] so that </span>
<span>V'(c) = (V(t*) - V(0)) / (t* - 0) (mean value theorem) </span>
<span>We know that V(0) = V(t*) = 0 (covered distances equal at the start and finish), so we get </span>
<span>V'(c) = v#(c) = v1(c) - v2(c) = 0 </span>
<span>=> v1(c) = v2(c) </span>
<span>So there exist a point c in [0, t*] so that the velocity of monk 1 equals that of monk 2. </span>
8 0
4 years ago
Dave Flip a coin 20 times and got heads on eight of the flips Based on Dave's results what is the experimental probability of th
Alex Ar [27]

Answer:

Experimental probability of head = 2 / 5 or 40%

Step-by-step explanation:

Given:

Total chances of getting head = 20 times

Number of heads come = 8

Find:

Experimental probability of head

Computation:

Experimental probability of head = Number of heads come / Total chances of getting head

Experimental probability of head = 8 / 20

Experimental probability of head = 2 / 5 or 40%

3 0
3 years ago
What is 36 pieces of candy for 6 children as a unit rate?
Leni [432]

\frac{36}{6} =\frac{6}{1}

7 0
3 years ago
Hya think of a number "m" . She square it, add "y" to the answer and then subtract 7 from it. The final answer is "A". 1) Derive
Bond [772]
<h2><u>Solution (1)</u> :</h2>

Given, to find A we have to :

  • square m
  • Add y to m²
  • Subtract 7 from m² + y

From the question, the following equation can be formed :

=\tt  A = {m}^{2}   + y - 7

Therefore, the formula for finding A = m² + y - 7

<h2><u>Solution (2)</u> :</h2>

The value of A we can derive from the formula is :

=\tt A =  {m}^{2}  + y - 7

Value of m = 3 (given)

Which means :

=\tt A =   {3}^{2}  + y  - 7

=\tt \: A = 9 + y - 7

=\tt A = 9 - 7 + y

\color{plum} =\tt A = 2 + y

Thus, the value of A = 2+y

Therefore, the value of A = <u>2+y</u>

7 0
3 years ago
Other questions:
  • Can you help me please A, B, C Or D?
    14·2 answers
  • List websites where you can watch anime for free without adds!!
    15·2 answers
  • How do i find the length of side labeled y?
    6·1 answer
  • Divide and simplify 3/4÷2/3
    10·1 answer
  • a store manager timed janette to see how long it would take her to fold and put away a sweater, a shirt,a pair of pants, and a s
    7·2 answers
  • Solve the equation 4^2x = 9
    6·1 answer
  • What is 25% of $4007
    6·1 answer
  • 5<img src="https://tex.z-dn.net/?f=5x%5E%7B2%7D%20%2B%2020x%20-%2060%20%3D" id="TexFormula1" title="5x^{2} + 20x - 60 =" alt="5x
    8·2 answers
  • The five sales people at Southwest Appliances
    14·1 answer
  • If Dwayne drinks 48 bottles of water in 12 days, how many bottles of water will he drink in 4 days?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!