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2 years ago

Need the answer fast, anyone know?

Mathematics

1 answer:

kolbaska11 [484]2 years ago

8 0

Y<-1/2x
Y> or = -1
Because if you plug in a number then it's the only one that fits

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What is the factored form of the expression? d^2 = 36d + 324

Veseljchak [2.6K]

Answer:

$(x-43.45)(x+7.45)=0$

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

As, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ .

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be $(x-43.45)(x+7.45)=0$

3 0

2 years ago

Consider the equation y = –3(x – 3) Which equation, when graphed with the given equation, will form a system with lines that ove

pentagon [3]

Answer:

y=-3x+9 (D)

Step-by-step explanation:

8 0

3 years ago

Solve for Х. 16 20 A 25.6 В 6 С 12 D 15

777dan777 [17]

Answer:

12 which is on C

Step-by-step explanation:

use pathogoras theorem

a^2+b^2=c^2

16^2+b^2=20^2

256+b^2=400

b^2=400-256

b^2=144

b= square root of 144

b= 12

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2 years ago

Rewrite the expression 15(8 - 2) using the distributive property.

Charra [1.4K]

Answer:

Step-by-step explanation:

15(8-2)

15-(6)

4 0

2 years ago

Read 2 more answers

I need the help for number 7 plz help me as soon as possible plz help me

Alisiya [41]

Answer:

Step-by-step explanation:

you need to divide both 15 and 25 by 5

15 divided by 5 = 3

25 divided by 5 = 5

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2 years ago