HElp me with this one but not with a big processs justa little one 8. Think of another quadratic equation that has two (2) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
9. Think of another quadratic equation that has one (1) real number solution. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
10. Think of another quadratic equation that has no (0) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.

Answers

Answer 1

Answer: so 2 real solutions
just write 2 factors and expand
(x-3)(x-4)=0
x^2-7x+12=0
discriminant is when you have b^2-4ac
so subsitute
ax^2+bx+c=0
a=1
b=-7
c=12
-7^2-4(1)(12)
49-48=1
discriminant=1

one real solution would be
(x-1)(x-1)=0
x^2-2x+1=0
discriminant=-2^2-4(1)(1)=4-4=0
discriminant=0

no real solutions has the discriminant less than zero
let's say that b=1 and c=20 and a=1
basically, we need a set of numbers where b^2 is less than 4acso

1^2-4(1)(20)=1-80=-79
then we subsitute
x^2+x+20=0

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What Is 7*2*9*(45/5)*2 equal?

Answers

$7\cdot2\cdot9\cdot (45)/(5) \cdot2=14\cdot9\cdot9\cdot2=126\cdot18=2,268$

$7 * 2* 9 * (45/5) *2 \n \n = 7 * 2 * 9 * 9*2 \n \n = 14 * 81 * 2 \n \n = 14 * 162 \n = 2268$

The width of a rectangular block of land is 2/7 of its length. If it’s perimeter is 252m, find it’s length.

Answers

The length of the rectangular block of land is 98 m.

What is the perimeter of the rectangular block?

The perimeter of the rectangular block is given by following formula;

$\rm Perimeter \ of \ rectangular \ block= 2(Length + Width)\n\n$

Let l is the length of a rectangular block of land and w is the width of a rectangular block of land.

The width of a rectangular block of land is 2/7 of its length. If it’s perimeter is 252m, find it’s length.

The width of a rectangular block of land is 2/7 of its length.

w = (2/7) l

The width of the rectangular block of land is;

$\rm Perimeter \ of \ rectangular \ block= 2(Length + Width)\n\n 252=2(l+w)\n\n(252)/(2)=(2)/(7)l+l\n\n126= (2l+7l)/(7)\n\n 126= (9l)/(7)\n \n 9l =126* 7\n\n\rm 9l =882\n\n l =(882)/(9)\n\n l=98$

The width of the rectangular block of land is;

$\rm l = (2/7) w \n\nl =(2)/(7) * 98\n\nl=2 * 1 4\n\nl =28$

Hence, the length of the rectangular block of land is 98 m.

Learn more about perimeter here;

brainly.com/question/22854876

#SPJ2

Answer:

Step-by-step explanation:

the perimeter is : p = 2(x+y)..... x : width y : length

you have the system ; 2(x+y) = 252.......(1)

x = (2/7) y ...........(2)

y > x ....(3)

Substitute x = (2/7) y into (1) and simplifiy and solve for y :

(2/7) y + y = 126

(2y+7y)/7 = 126

9y = 882

y = 98 m ( the length )

At the local animal shelter, there are currently 15 dogs, 12 cats, 3 snakes,and 5 parakeets

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Answers

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Answers

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