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2 years ago

Work out the surface area of the solid cuboid. 2.5m 2m 5m The diagram is not drawn to scale.

Mathematics

1 answer:

kozerog [31]2 years ago

5 0

Answer:

the formula for TSA of a cuboid is (lb+bh+hl)

soo it will be

(2.5x2+2x5+5x2.5)

(5+10+10)

(25)

so 25 cm^2

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Solve the equation for the indicated variable. Please help ASAP!!!!! :(<br> A=(730x)/(d^2) for x

zvonat [6]

First let's get rid of the $d^2$ in the denominator of the fraction on the right side of the equation. This will help to get only $x$ and a coefficient on one side of the equation:

$A = \dfrac{730x}{d^2}$

$d^2A = 730x$

Now, simply divide by 730 to find $x$ :

$d^2A = 730x$

$\boxed{\dfrac{d^2A}{730} = x}$

3 0

3 years ago

Which expression is equivalent to [(3xy^-5)^3/(x^-2y^2)^-4]^-2?

Mademuasel [1]

Answer:- a.The given expression is equivalent to $\frac{x^{10}y^{14}}{729}$

Given expression:- $[\frac{(3xy^{-5})^3}{(x^{-2}y^2)^{-4}}]^{-2}$

$=[\frac{(3)^3x^3y^{-5\times3}}{x^{-2\times-4}y^{2\times-4}}]^{-2}.........(a^m)^n=a^{mn}$

$=[\frac{27x^3y^{-15}}{x^8y^{-8}}]^{-2}$

$=[27x^{3-8}y^{-15-(-8)}]^{-2}............\frac{a^m}{a^n}=a^{m-n}$

$=[27x^{-5}y^{-7}]^{-2}=(27)^{-2}(x^{-5})^{-2}(y^{-7})^{-2}.........(a^m)^n=a^{mn}$

$=\frac{1}{(27)^2}(x^{10}y^{14})=\frac{x^{10}y^{14}}{729}$

Thus a. is the right answer.

6 0

3 years ago

Read 2 more answers

program that generates two random numbers between one and 11. what is the probability that both values will be more than 7? numb

katovenus [111]

Answer:

1/9

Step-by-step explanation:

The numbers between 1 and 11 are:

2, 3, 4, 5, 6, 7, 8, 9, 10

There are 9 numbers.

Of the 9 numbers, 8, 9, and 10 are greater than 7, so there are 3 numbers greater than 7.

p(number greater than 7) = 1/3

p(>7) = 1/3

Each time a number is selected, the probability it is greater than 7 is 1/3.

For two numbers, you have two independent events, so the overall probability is the product of the individual probabilities.

p(>7 then >7) = p(>7) * p(>7) = 1/3 * 1/3 = 1/9

6 0

3 years ago

3/4 times 2/4<br> thank you

irinina [24]

Answer:

3/8 (0.375)

Step-by Step:

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3 years ago

Factor the following equation 2n2 -n -45

Genrish500 [490]

Answer:

( n − 5 ) ( 2 n + 9 )

Step-by-step explanation:

Factor by grouping

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3 years ago

Work out the surface area of the solid cuboid. 2.5m 2m 5m The diagram is not drawn to scale.​

Work out the surface area of the solid cuboid. 2.5m 2m 5m The diagram is not drawn to scale.