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Morgarella [4.7K]
3 years ago
10

I’m new to this app! And i really need help.. PLEASE HELP!!!!!

Mathematics
1 answer:
aalyn [17]3 years ago
8 0

Step-by-step explanation:

a) x^2 - 5x + 4 = (x - 1)(x - 4)

b) x^2 - 10x + 9 = (x - 1)(x - 9)

c) x^2 - 16x + 64 = (x - 8)^2

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Plz help i dont know how to get the answer to Solve for x. x/3≤−6
Mekhanik [1.2K]

X<=-6*3

X<=-18

SO THAT IS THE ANSWER

8 0
3 years ago
Read 2 more answers
Describe the number and type of roots for the polynomial (how many real and complex?). x3 + 5x2 – 4x – 2 = 0
zloy xaker [14]
Descartes' rule of signs tells you the one sign change in the coefficients means there's one positive real root. If you change the sign of the odd-power terms, the signs become -++-, so have two sign changes. This means there are 0 or 2 negative real roots.

A graph shows there to be 3 real roots, two of which are negative. Thus there are no complex roots.

7 0
3 years ago
How much water should be added to 6 gallons of pure acid in order to obtain the 24% acid solution?
Helen [10]

Answer:

19 gallons

Step-by-step explanation:

Let x gallons be the amount of water which should be added to 6 gallons of pure acid in order to obtain the 24% acid solution.

Amount of water = x gallons

Amount of pure acid = 6 gallons

Amount of acid solution = x + 6 gallons

Amount of acid in acid solution = 24%

So, there are 0.24(x+6) gallons of acid in acid solution.

Hence,

0.24(x+6)=6

Solve this equation. Multiply it by 100:

24(x+6)=600\\ \\24x+144=600\\ \\24x=600-144\\ \\24x=456\\ \\x=19\ gallons

6 0
4 years ago
Read 2 more answers
Which expression would be equivalent to: Which expression would be equivalent to: \frac{1+b}{2} - 3(a-1)
IrinaVladis [17]

Answer:

\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+7}{2}

Step-by-step explanation:

Given

\frac{1+b}{2} - 3(a-1)

Required

An equivalent expression

\frac{1+b}{2} - 3(a-1)

Take LCM

\frac{1+b}{2} - 3(a-1) = \frac{1+b- 2*3(a-1)}{2}

\frac{1+b}{2} - 3(a-1) = \frac{1+b- 6(a-1)}{2}

Open bracket

\frac{1+b}{2} - 3(a-1) = \frac{1+b- 6a+6}{2}

Collect like terms

\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+6+1}{2}

\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+7}{2}

Hence, an equivalent expression is:

\frac{b- 6a+7}{2}

8 0
3 years ago
Cho đường tròn tâm O , đường kính AB=13cm , CD=12cm và vuông góc với AB tại H
Studentka2010 [4]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
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