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marshall27 [118]
3 years ago
7

Find the area of the four walls of a cubical room whose side measures 5m. Find the cost of white washing the room at the rate of

`23 per square metre.
Mathematics
1 answer:
NikAS [45]3 years ago
7 0
We know that one wall side is 5m.
To find the area of one wall, we do 5²=25m²
We know there is 4 walls. So we have to find total area of all four walls.
Which is 25×4=100m²
To find the total cost of white washing the room, we have to do:
100(total area)×23(cost per m²)=$2300
So the total cost of the area is $2300
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This is 10 points, PLS help
algol [13]

Answer:

Sound can travel 12 miles per minute.

Step-by-step explanation:

Speed equation is distance divided by time.

So we have 1 mile per 1/12 of a minute.

Let’s write the equation.

Speed of sound = 1 / 1/12

Multiply by the reciprocal.

1 * 12 = 12.

3 0
3 years ago
20 POINTS and it has to be correct. This depends on if I pass or fail
valentina_108 [34]

Answer:

(x+8)^{2}+(y-14)^{2}=19

Step-by-step explanation:

The equation of a circle is: (x-x_1)^{2}+(y-y_1)^{2}=r^2 , where x_1 is the x coordinate of the center, y_1 is the y coordinate of the center, and r is the radius.

In this case, x_1 = -8, y_1 = 14, and r = 4.3589. Plugging these into the equation, we get:

(x+8)^{2}+(y-14)^{2}=4.3589^2

If you want, you can round 4.3589^2 to 19.

Then, the answer would be: (x+8)^{2}+(y-14)^{2}=19 .

Hope this helps!

7 0
3 years ago
Read 2 more answers
Consider the function f(x)=10^x and function g(x)=f(x+4). How will the graph of function g differ from the graph of function f?
Jobisdone [24]

Answer:

Shifts 4 units to left

Step-by-step explanation:

Given:

\displaystyle \large{f(x)=10^x}\\\\\displaystyle \large{g(x)=f(x+4)=10^{x+4}}

Accorded to transformation rules:

  • f(x + a) is shift to left <u>a</u> units.
  • f(x - a) is shift to right <u>a</u> units.
  • f(x) + a is shift up <u>a</u> units.
  • f(x) - a is shift down <u>a</u> units.

Since function g is f(x + 4) then function g is the graph of function f(x) that shifts to left 4 units.

4 0
2 years ago
An investment of $2,000 is earning interest at the rate of 6.2% compounded quarterly over 5 years. Approximately how much intere
vova2212 [387]

Answer:

C.  <em>$720.37</em>

Step-by-step explanation:

An investment of $2,000 is earning interest at the rate of 6.2% compounded quarterly over 5 years.

We know that,

A=P\left(1+\dfrac{r}{n}\right)^{n\cdot t}

here,

A = Future amount,

P = Principal = $2000

r = Rate of interest = 6.2% = 0.062

n = Number of period = 4 (as compounded quarterly)

t = time period = 5 years

Putting the values,

A=2000\left(1+\dfrac{0.062}{4}\right)^{4\cdot 5}

=2000\left(1+0.0155\right)^{20}

=2000\left(1.0155\right)^{20}

=\$2720.37

So the interest will be,

=\text{Future amount}-\text{Principal}

=2720.37-2000=\$720.37

4 0
3 years ago
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Find the number, if the sum of 9 and a half a number equals 35. Which of the following translations is correct?
UNO [17]

Answer:

9-2x=35

Step-by-step explanation:

5 0
3 years ago
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