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inn [45]
3 years ago
6

A rectangular floor of area 360 m2 is going to be tiled. Each tile is rectangular, and has an area of 240 cm2. An exact number o

f tiles can be put into the space. How many tiles will be needed?
Mathematics
1 answer:
scoray [572]3 years ago
4 0

Answer:

1500

Step-by-step explanation:

The area of the regtangular floor is 360m². The floor is going to be retired with tiles having area of 240cm² . We need to find the number of times . Therefore ,

\implies 360m^2 = 360 \times 10^4 \ cm^2

And , the number of tiles required will be ,

\implies n =\dfrac{Area \ of \ floor}{Area \ of \ a \ tile }\\\\\implies n =\dfrac{ 360 \times 10^4 \ cm^2}{240 cm^2} \\\\\implies \underline{\underline{ n = 1,500 }}

<u>Hence </u><u>the</u><u> </u><u>required</u><u> answer</u><u> is</u><u> </u><u>1</u><u>5</u><u>0</u><u>0</u><u> </u><u>.</u>

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If tanx =√24 and cosx =−2√23, find sinx.
mylen [45]

Answer:

Step-by-step explanation:

sin(x)=cos(x) × tan(x)

=(-2√23)×(√24)

=(-2√23)×(2√6)

=(-4√138)

=(-4(2√(3×23)))

=(-8√69)

6 0
3 years ago
A counselor at a middle school must create an arranged schedule of elective classes for the last 2 periods of the day for all of
Vikki [24]

Solution

The counselor has 12 electives courses (e.g. art, band, PE, etc.) to choose from and must select 2 ordered classes for each 6th grade student.

Let S be the sample space.

Then, n(S) = 12C2 = (12 x 11) ÷ (2 x 1 ) =  132 ÷ 2 =  66

Then, n(S) = 12C2 = (12 x 11) ÷ (2 x 1 ) =  132 ÷ 2 =  66

Sixty six (66) ways can the counselor arrange the last 2 periods of the day for the 6th grade students

7 0
3 years ago
The rectangle shown has a perimeter of 78 cm and the given area. Its length is 3 more than five times its width. Write and solve
Bad White [126]

Answer:

So W is going to stand for width and L is going to stand for length.

L= 2W+6

78=2L + 2W

Those are the two equations you will use. So plug in L=2W+6 into the other one and solve.

78= 4W+12 +2W

(simplify)

78=6W+12

(-12 from both sides)

66=6W

(divide by 11)

W=11

Replug W into your equation to find L.

L=22+6

(simplify)

L=28

I hope this is right

Step-by-step explanation:

6 0
4 years ago
Kai used a protractor to measure the angle below. Is Kai using the protractor correctly? Explain your answer. If Kai is
Paladinen [302]

Answer:

he is using it correctly

Step-by-step explanation:

he is using it correctly because the bottom line of the angle matches with the 0° line on the protractor.

5 0
3 years ago
Step by step to get answer
ELEN [110]

Use PEMDAS

Parentheses

Exponents

Multiplication (L-R)

Division (L-R)

Addition (L-R)

Subtraction (L-R)

(30-9+3)+9

(21+3)+9

24+9

33

33 is your answer

3 0
4 years ago
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