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2 years ago

Which is the graph of f(x) = (x - 1)(x + 4)?

Mathematics

2 answers:

zheka24 [161]2 years ago

6 0

You can determine this by finding zeros of quadratic function,

$(x-1)(x+4)=0\implies x_1=1, x_2=-4$ .

Which eliminates first and third option.

Now we have up and down parabolas left.

If we factor $(x-1)(x+4)=x^2+4x+\dots$ we find that the coefficient before $x^2$ determines how it is turned, since its positive its an upward turned parabola hence the answer is the last graph.

Hope this helps.

Vlad1618 [11]2 years ago

4 0

Answer:

last graph

Step-by-step explanation:

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PLSS HELP

Dmitry [639]

Answer:

$8,000

Step-by-step explanation:

Let the store earned $x in December.

Therefore,

Money spent to buy new inventory $=\frac{1}{4} x$

Remaining money $= x - \frac{1}{4} x =\frac{3}{4} x$

Money used to pay bills $=\frac{1}{2} \times \frac{3}{4} x=\frac{3}{8} x$

Money still left over = $3,000

Total money earned in December $= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{2}{8} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{5}{8} x+ 3,000$

$\therefore x- \frac{5}{8} x=3,000$

$\therefore \frac{8x-5x}{8} =3,000$

$\therefore \frac{3x}{8} =3,000$

$\therefore x =3,000\times \frac {8}{3}$

$\therefore x =1,000\times 8$

$\therefore x =\$8,000$

Thus, total money earned in December is $8,000.

3 0

2 years ago

What is the nth term for the sequence 5 , 14 , 29 , 50 , 77

Marina86 [1]

The answer would be 3n^2 + 2.

This can be found/proven by replacing "n" with term number (1,2,3,4...), then solving to get the final number. For example 3 * 1^2 + 2. You would first do 1^2, which is 1. Next, you would multiply 1 by 3, to get 3. Finally, you'd and the 2 to get 5. 5 is the 1st term, and you can use this same equation to get the rest of the terms you need.

I hope this helps!

8 0

2 years ago

GIVING BRAILEST Describe a situation that the equation could represent g+3 _____ =15 6

krek1111 [17]

Answer:

g=153

Step-by-step explanation:

i hope this helped...

6 0

2 years ago

BC is parallel to DE. What is the length of CE? A) 2 1/3 B) 2 2/3 C) 3 1/3 D)3

Bas_tet [7]

Is there supposed to be a picture

3 0

2 years ago

Read 2 more answers

If the cost of 8 boxes is rupees 243.20 the cost of one box

ira [324]

Answer:

30.4

Step-by-step explanation:

8 boxes = 243.20

find 1 boxes

= 243.20 ÷ 8

= 30.40 / 30.4

3 0

2 years ago