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2 years ago

2x-12by 3 =2x by 5 sove the equation

Mathematics

1 answer:

natita [175]2 years ago

6 0

Answer:

Step-by-step explanation:

5(2x minus 12) = 2x multiplied by 3

10x minus 60 = 6x

10x minus 6x = 60

4x = 60

x = 60 by 4

x = 15

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A rectangular lawn is 2 m longer than it is wide.

PtichkaEL [24]

Let's breadth be x

Length be x+2

ATQ

$\\ \sf\longmapsto x(x+2)=21$

$\\ \sf\longmapsto x^2+2x=21$

Use completing the square method

$\\ \sf\longmapsto 4(x^2+2x)=4(21)$

$\\ \sf\longmapsto 4x^2+8x=84$

$\\ \sf\longmapsto (2x)^2+2(2x)(2)=84$

$\\ \sf\longmapsto (2x)^2+2(2x)(2)+2^2=2^2+84$

$\\ \sf\longmapsto (2x+2)^2=88$

$\\ \sf\longmapsto 2x+2=\pm\sqrt{88}$

As it's dimensions we will take positive

$\\ \sf\longmapsto 2x+2\approx 9.7$

$\\ \sf\longmapsto 2x=9.7-2=7.7$

$\\ \sf\longmapsto x=3.8$

x+2=3.8+2=5.8

Now

$\\ \sf\longmapsto Perimeter=2(L+B)$

$\\ \sf\longmapsto perimeter=2(3.8+5.8)$

$\\ \sf\longmapsto perimeter=2(9.6)$

$\\ \sf\longmapsto Perimeter=19.2m$

Length of 1 strip=13m

Total strips

$\\ \sf\longmapsto \dfrac{19.2}{13}$

$\\ \sf\longmapsto 1.47strips$

She needs 2 strips

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2 years ago

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Please Help I DOn't Understand This Lesson

elena55 [62]

<u>Set up the composite function and simplify. </u>

f = 2x + 3,

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D. 134

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2 years ago

Find the vertical asymptote for y=x^2-5x/x^2-x-2

grigory [225]

Answer:

vertical asymptote at x=2 and x=-1

Step-by-step explanation:

$y= \frac{x^2-5x}{x^2-x-2}$

To find out vertical asymptote we set the denominator =0 and solve for x

$x^2 - x - 2=0$

now factor left hand side

find out two factors whose product is -2 and sum is -1

-2 times 1 = -2

-2+1 = -1

(x-2)(x+1) =0

x-2 =0 so x= 2

x+1 =0 so x=-1

vertical asymptote at x=2 and x=-1

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2 years ago

There are 25 students in Ms. Hunter's class. Seventeen of the students in her class rode the bus home today. The rest walked hom

Ugo [173]

Answer:

68% rode the bus; 32% walked home

Step-by-step explanation:

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2 years ago

Pls answer I give brainliest

masha68 [24]

Answer:

Step-by-step explanation:

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2 years ago

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