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3 years ago

Find the total surface area of a cube whose edge is 2 . 1 m

Mathematics

1 answer:

galben [10]3 years ago

5 0

Answer:

Total surface of area =

$6l {}^{2}$

=6*2.1m

$12.6m ^{2}$

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The perimeter of a rectangle is 84cm if the width of rectanle is 16 cm Find its lenth.

Gelneren [198K]

To find the perimeter it is 2 X Width + 2 X the length = 84

32+ 2 X the length = 84
2 X the length = 52
Therefore the length is 26cm

4 0

1 year ago

Read 2 more answers

The number of books borrowed from a library each week follows a normal distribution. When a sample is taken for several weeks, t

Marat540 [252]

$\mathbb P(X>250)=\mathbb P\left(\dfrac{X-190}{30}>\dfrac{250-190}{30}\right)=\mathbb P(Z>2)\approx0.0228$

Or, if you're familiar with the empirical rule and the basic properties of the normal distribution, you can use the fact that approximately $95/%$ of the distribution lies within two standard deviations of the mean, or

$\mathbb P(|Z|$

which means about $5\%$ of the distribution lies outside this interval, or

$\mathbb P((-22))\approx0.05$

Because the distribution is symmetric, you have

$\mathbb P(-22)$
$\implies \mathbb P((-22))=\mathbb P(-22)=2\mathbb P(Z>2)\approx0.05$
$\implies \mathbb P(Z>2)\approx 0.025$

8 0

3 years ago

Read 2 more answers

I don't really know on this one. I'm thinking it's because if T kept going it would go into a 3rd quadrant but I'm not too sure.

enyata [817]

That is correct since the line in T is not straight it would eventually hit the third quadrant
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8 0

3 years ago

Convert to the product of multiplication<br>a^2-b^2-4b-4

kirill [66]

$a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

<u>Step-by-step explanation:</u>

We know that factors are the numbers that are being multiplied together . As 6532*7 = 45724 .Here 6532 & 7 are the factors and 45724 is product of the factors .

Here , we need to convert to the product of multiplication

a^2-b^2-4b-4 or , $a^2-b^2-4b-4$ :

⇒ $a^2-b^2-4b-4$

We know by identity that , $p^2-q^2 = (p-q)(p+q)$

⇒ $(a-b)(a+b)-4b-4$

Taking common term out as -4 :

⇒ $(a-b)(a+b)-4(b+1)$

Therefore , $a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

7 0

2 years ago

Yuki made brownies, and ate 1/5 of them. James ate another 2/7 of the brownies. a) What is the fraction of the brownies eaten? b

BabaBlast [244]

Answer:

a. 17/35

b. 18/35

Step-by-step explanation:

Multiply fractions!

4 0

2 years ago

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