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3 years ago

Find the perimeter & area of the rectangle. 2x-3 5(x-2)

Mathematics

1 answer:

shtirl [24]3 years ago

4 0

Step-by-step explanation:

The perimeter of a rectange is :

P = 2(L+B)

L is length and B is breadth

L = 2x-3 and B = 5(x-2)

⇒P = 2(L+B)

P = 2[2x-3+5(x-2)]

P = 2[2x-3+5x-10]

P = 2[7x-13]

The area of a rectangle is :

A = L×B

$A=(2x-3)\times 5(x-2)\\\\A=(2x-3)\times(5x-10)\\\\A=10x^2-10x-15x+30\\\\A=10x^2-25x+30$

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Find S5 for a geometric series for which a1=81 and r=1/9.

Minchanka [31]

ANSWER

$S_5=91\frac{10}{81}$

EXPLANATION

The sum of the first $n$ terms of a geometric sequence is given by;

$S_n=\frac{a_1(1-r^n)}{1-r} ,-1$

Where $n$ , is the number of terms and $a_1$ is the first term.

When $n=5$ , we have $a_1=81$ , we get;

$S_5=\frac{81(1-(\frac{1}{9})^5)}{1-\frac{1}{9}}$

$S_5=\frac{81(1-\frac{1}{59049})}{1-\frac{1}{9}}$

$S_5=\frac{81(\frac{59048}{59049})}{\frac{8}{9}}$

$S_5=\frac{7381}{81}$

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Which equation can be used to find the surface area of the cylinder?

atroni [7]

Answer:

I am pretty sure the answer is A.

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shtirl [24]

Answer:

Step-by-step explanation:

both angles must add up to 180 so

6x+12+3x+63 must =180

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9x+75=180

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2 years ago

Solve for x.<br><br> 3x - 13 = 2<br><br> (SHOW YOUR WORK)

Eddi Din [679]

3x-13=2

move -13 to the other side

sign changes from -13 to +13

3x-13+13=2+13

3x=2+13

3x=15

divide both sides by 3 to get x by itself

3x/3=15/3

cross out 3 and 3, divide by 3 and then becomes 1*1*x=x

x=15/3

x=5

answer:

x=5

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3 years ago