3 years ago

What are the exact solutions of x2 – 5x – 7 = 0?

Mathematics

1 answer:

erica [24]3 years ago

7 0

Answer:

you have to use quadratic formula

6.140, -1.140

Step-by-step explanation:

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3x+4y=24 ,4x+3y=22 simultaneous equations simultaneous equ

Vinvika [58]

Answer:

x=64

y=54

Step-by-step explanation:

3x+4y=24 4(24-4y\3)+3y=22

x=24-4y/3 96-12y\3+3y=22

x=24-4(54)/3

x=-64 96/3-22=3y/3

y=54

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2 years ago

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Minchanka [31]

Answer: the answer is B

Step-by-step explanation:

51.5

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2 years ago

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Yakvenalex [24]

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3 years ago

The equation P= 21 + 2w models the perimeter, P, of a rectangle with a length of / units and a width of w units.

natima [27]

Answer:

width = 10 units and length = 20 units

Step-by-step explanation:

Let the width be w

so Length will be 2w

using the rectangle formula:

$\sf Perimeter \ of \ rectangle= 2L + 2W$

$\sf 60= 2(2w) + 2w$

$\sf 60= 4w + 2w$

$\sf 60= 6w$

$\sf w = 10 \ units$

Find length:

$\sf length = 2w$

$\sf length = 2(10)$

$\sf length = 20 \ units$

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Tasya [4]

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3 years ago

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