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3 years ago

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

Mathematics

2 answers:

White raven [17]3 years ago

6 0

Answer:

None of the above

Step-by-step explanation:

See the attachment for x-intercepts and vertex coordinates. These coordinates do not match any of the answer choices.

___

The closest choice is the last one. It has the direction of opening and the intercepts correct, but the vertex coordinates wrong.

gregori [183]3 years ago

6 0

Answer:

The answer is the second choice

Step-by-step explanation:

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Blank divided by 6=0.2

mario62 [17]

Just do 6 x 0.2 to reverse the division
So the answer is 1.2

I think

4 0

3 years ago

Eric scored 95% on his math test. He got 19 problems correct. How many questions were on the test?

Leviafan [203]

i'm pretty sure it's 20.

8 0

3 years ago

Question 3

BigorU [14]

Answer:

30 mph

Step-by-step explanation:

time = distance/speed

If x represents Jane's speed along the summit then her total exploration time is ...

12/x + 40/(x -5) = 2 . . . . . hours

Multiplying by (x)(x -5), we get ...

12(x -5) +40(x) = 2(x)(x -5)

Dividing by 2 and subtracting the left side gives ...

x^2 -31x +30 = 0

(x -30)(x -1) = 0 . . . . . factor

Solutions are x = 30 and x = 1, values of x that make the factors zero. A speed of 1 mph makes no sense in this problem, so ...

Jane's speed along the summit was 30 mph.

3 0

3 years ago

Read 2 more answers

The area of a right triangle is given by the expression:

lorasvet [3.4K]

The expression that models the length of the second leg of the triangle is 2x - 3.

Recall:

The area of a triangle = $\frac{1}{2} bh$

Given:

Area of triangle = $\frac{1}{2} (6x^2 - 7x - 3)$

Length of one of the legs = 3x + 1

Therefore, it means that multiplying both legs should give us:

$6x^2 - 7x - 3$

To find the expression that models the other leg, divide $6x^2 - 7x - 3$ by 3x + 1:

Thus:

$\frac{6x^2 - 7x - 3}{3x - 1}$

Factorize the numerator

$\frac{6x^2 - 2x - 9x - 3}{3x - 1}\\\\\frac{2x(3x - 1) - 3(3x - 1)}{3x - 1}\\\\\frac{(2x- 3)(3x - 1)}{3x - 1}$

Simplify

$\frac{(2x- 3)(3x - 1)}{3x - 1} = 2x- 3$

Therefore, the expression that models the length of the second leg of the triangle is 2x - 3.

Learn more here:

brainly.com/question/20712284

6 0

2 years ago

In 7 minutes, Jenny can type 63 words. What is her rate in words per minute?

NISA [10]

Answer:

Step-by-step explanation:

6 0

3 years ago