All categories

2 years ago

Maths question pls answer

Mathematics

2 answers:

alexira [117]2 years ago

7 0

Answer:

72cm²

Step-by-step explanation:

perimeter= 2(l+w)

36 = 2(l+w)

36/2 = l+w

18 = l+w

since, l is twice as w

18= 2w + w

18 = 3w (we can add since all the variables, and exponents are same)

18/3 = w

6= w

NOW,

w=6 and l is equal to twice as 6

so l=12

area= l×b

= 12×6 = 72cm²

hope this helps. It was toooo long

Sergio [31]2 years ago

5 0

Answer:

Length=12

Width=6

You might be interested in

Suppose you buy a $50 coffee maker in an area where the sales tax is 8%. When you check out, 8% of $50 would be added to your to

ASHA 777 [7]

Answer:

Step-by-step explanation:

8% is also 8/100. This would be true for all percents 0 to 100%. If it were 42% it can be written as 42/100.

So, 8% is 8/100. If you want to find 8/100 of 50 multiply them.

8/100 * 50/1 = (8*50) /100

400/100 = 4

7 0

2 years ago

Read 2 more answers

Mario has drawn a plan of his bedroom on 1 cm square paper. His en-suite shower cubicle measure. 1m x1m, give the scale of his d

Romashka [77]

<span>Mario has drawn a plan of his bedroom on 1 cm square paper. His en-suite shower cubicle measure. 1m x1m, give the scale of his drawing
as ratio _ 1 cm__ : __1m_.
What are the actual dimension of his bed __1__ m x _1_ m</span>

4 0

3 years ago

Read 2 more answers

Please answer this and I’ll make ya

Fynjy0 [20]

It’s definitely A
Ex: f(x)=8x+2
f(x)=8(-4)+2
f(x)=-32+2
f(x)=-30

3 0

3 years ago

Please help, much appreciated, will give brainliest :)

DIA [1.3K]

Answer:

so if you multiple4.8 percent by 3,000 u get 144 and then u divide by 3 and that u u 48 dollars per year

7 0

3 years ago

Standard deviation of a normal data distribution is a _______. Group of answer choices

FrozenT [24]

Answer:

Standard deviation of a normal data distribution is a measure of data dispersion.

Step-by-step explanation:

Standard deviation is used to measure dispersion which is present around the mean data.

The value of standard deviation will never be negative.

The greater the spread, the greater the standard deviation.

Steps-

1. At first, the mean value should be discovered.

2.Then find out the square of it's distance to mean value.

3.Then total the values

4.Then divide the number of data point.

5.the square root have to be taken.

Formula-

SD= $\sqrt{\frac{(\sum{x-x)^2} }{n-1}$

Advantage-

It is used to measure dispersion when mean is used as measure of central tendency.

5 0

3 years ago