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
Fiesta28 [93]
3 years ago
6

Debra's room is 4m long, 3.5 wide and 2m high. She wallpapers all 4 walls excluding a door which is 2m by 1m and a window which

is 1m by 1m. If the wallpaper costs $3 per m square, how much cost of wallpapers?

Mathematics
1 answer:
zaharov [31]3 years ago
3 0
I hope this helps you

You might be interested in
A bridge in the shape of a parabolic arch is modelled by this function (see pic).
faltersainse [42]

Answer:

(C) 25,35 and 175,35

4 0
3 years ago
What combination of transformations is shown below?
saw5 [17]

Answer:

Rotated then reflected.

Step-by-step explanation:

3 0
3 years ago
Wanni cycled 6 km from her house to the school at a uniform speed, v km/h. If she increased her speed
Karolina [17]

Answer:

The quadratic equation in terms of v is   v² + 2 v + 180 = 0

Step-by-step explanation:

Given as :

The distance between house to the school = d = 6 km

The uniform speed = v km/h

So, Time = \dfrac{\textrm Distance}{\textrm speed}

or, t = \dfrac{\textrm d}{\textrm v}

Or, t = \dfrac{\textrm 6}{\textrm v}

<u>Now, Again</u>

The speed is increase by 2 km/h

i.e speed = (v + 2) km/h

So, Time taken = t' = (t - \dfrac{4}{60})hours

i.e t' =  (t - \dfrac{1}{15})hours

Now, Time = \dfrac{\textrm Distance}{\textrm speed}

So, (t - \dfrac{1}{15}) = \dfrac{\textrm d}{\textrm v}

Or,  (t - \dfrac{1}{15}) = \dfrac{\textrm 6}{\textrm (v + 2)}

Or , \dfrac{\textrm 6}{\textrm v} -  \dfrac{1}{15} = \dfrac{\textrm 6}{\textrm (v + 2)}

Or , \dfrac{\textrm 90 - v}{\textrm 15 v} = \dfrac{\textrm 6}{\textrm v + 2}

Or, (90 - v) × (v + 2) = 6 × 15 v

Or, 90 v - 180 - v² - 2 v = 90 v

Or,  v² + 2 v + 180 = 90 v - 90 v

Or,  v² + 2 v + 180 = 0

So, The quadratic equation in terms of v

v² + 2 v + 180 = 0

Hence The quadratic equation in terms of v is   v² + 2 v + 180 = 0   Answer

3 0
3 years ago
Compute the difference​ quotient, StartFraction f (x plus h )minus f (x )Over h EndFraction f(x+h)−f(x) h​, for the function f (
lawyer [7]

Answer:

The difference quotient for f(x)=3x^2 is 3 h + 6 x.

Step-by-step explanation:

The difference quotient is a formula that computes the slope of the secant line through two points on the graph of <em>f</em>. These are the points with x-coordinates x and x + h. The difference quotient is used in the definition the derivative and it is given by

\frac{f(x+h)-f(x)}{h}

So, for the function f(x)=3x^2 the difference quotient is:

To find f(x+h), plug x+h instead of x

f\left(x+h\right)=3 \left(h + x\right)^{2}

Finally,

\frac{f\left(x+h\right)-f\left(x\right)}{h}=\frac{\left(3 \left(h + x\right)^{2}\right)-\left(3 x^{2}\right)}{h}

\frac{3\left(\left(h+x\right)^2-x^2\right)}{h} \\\\\frac{3(h^2+2hx+x^2-x^2)}{h} \\\\\frac{3h\left(h+2x\right)}{h}\\\\3h+6x

The difference quotient for f(x)=3x^2 is 3 h + 6 x.

4 0
3 years ago
1,2,3 or 4<br> Thank you!
Nuetrik [128]

Answer:

Option 3

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • A cake has a circumference of 25 1/7 inches. What is the area of the cake? Use 22/7 to approximate pi. Round to the nearest hund
    11·1 answer
  • Decide which food truck you would like to purchase (the blue or green food truck) and determine what the total cost will it be t
    9·1 answer
  • 5: 6 is 6. What is a of 5?​
    15·2 answers
  • A music video website received 5,000 comments on a new song they released. After the artist performed the song on television, th
    7·1 answer
  • Valerie works in a law office. Her annual salary is 24,000. Valerie is paid monthly and pays income tax of 15% on her earnings o
    5·1 answer
  • For what values of x is x2-36=5x true?<br> 0<br> -9 and 4<br> -4 and 9<br> 4 and -9<br> 9 and 4
    12·1 answer
  • Helpppppppppppppppppppppppppppppp
    6·2 answers
  • Helppppp what is the angle of
    14·2 answers
  • Write 8 as a percentage of 32<br> Plssss helppp
    11·2 answers
  • Translate this sentence into an equation. the product of jenny's height and 4 is 52.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!