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3 years ago

A rectangular plot of land has length 5x − 1 and width 3x + 7. What is the area of the land?

Mathematics

2 answers:

Sati [7]3 years ago

8 0

Answer:

15x^2 +32x -7

Step-by-step explanation:

(5x-1 )(3x+7)=

15x^2 - 3x +35x -7=

15x^2 +32x -7

sasho [114]3 years ago

3 0

Answer:

15x^2+32x-7

Step-by-step explanation:

Area of rectangle=l×b

=(5x-1)(3x+7)

=15x^2+35x-3x-7

=15x^2+32x-7

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What is the value of this expression 18+3(10-2)

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Answer:

Step-by-step explanation:

First subtract 10 by 2

18+3(8)

Now multiply 3 and 8

18+24

now add 18 and 24

18+24=42

Hope this helps! : )

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Which statement best describes the polynomial? 13y^8-4y^7+3y

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Find the solutions to the quadratic equation below by completing the square.<br><br> x2 - 8x - 7 = 0

Furkat [3]

Answer:

x=4- $\sqrt{23}$ , x=4+ $\sqrt{23}$

Step-by-step explanation:

(x^2-8x+16)-16-7=0

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3 years ago

HELP

dybincka [34]

Answer:

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8 0

3 years ago

48 m

g100num [7]

Answer:

Answer in terms of π=144π m^3

Answer by replacing π with 3.14 is 452.16 approximately 452.2m^3

Answer to the nearest whole no. is 452m^3

Step-by-step explanation:

$volume \: of \: a \: cone = \frac{1}{3} \pi {r}^{2} h$

$radius = \frac{diametre}{2}$

$radius = 24$

$height = 18$

$slant \: height \: = 30$

$first \: step$

$the \: exact \: volume \: of \: the \: cone \: in \: terms \: of \: \pi$

$v = \frac{1}{3} \pi {r}^{2} h$

$\: \: = \frac{1}{3} \times \pi \times 24 \times 18$

$\: \: \: = \frac{432\pi}{3}$

$\: \: \: = 144\pi$

$second \: step$

$approximate \: answer \: using \: 3.14 \: in \: place \: of \: \pi$

$144 \times 3.14$

$= 452.16$

$approximately \: 452.2$

$last \: step$

$answer \: to \: the \: nearest \: whole \: number$

$452 {m}^{3}$

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4 years ago