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worty [1.4K]
4 years ago
15

The function f(x) = x2 - 5x - 6, written

Mathematics
1 answer:
yulyashka [42]4 years ago
8 0

Answer:

D

Step-by-step explanation:

Given

f(x) = x² - 5x - 6

To find the zeros let f(x) = 0, that is

x² - 5x - 6 = 0

Consider the factors of the constant term (- 6) which sum to give the coefficient 0f the x- term (- 5)

The factors are - 6 and + 1, since

- 6 × 1 = - 6 and - 6 + 1 = - 5, thus

(x + 1)(x - 6) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x - 6 = 0 ⇒ x = 6

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PLZ HELP
Bad White [126]

Answer:

I think 14 days

Step-by-step explanation:

If 4 workers can do the task in 12 days then I should be able to complete the task in 4 time's 12 days. 6 workers should be able to complete the task in 4 times 12 divided 6.

3 0
3 years ago
The sail of a boat is in the shape of a right triangle, as shown below:
dolphi86 [110]
Answer: Choice C
7 divided by cosec 50 degrees

=====================================

Explanation:

Abbreviations:
sec = secant
cot = cotangent
cosec = cosecant (csc is also a widely used abbreviation)

-----------------

Let the horizontal leg be x

This leg is opposite the angle 50 degrees. The hypotenuse is 7

Opposite = x
Hypotenuse = 7

We'll either use the sine rule or the cosecant (csc) rule
sine = opposite/hypotenuse
cosecant = hypotenuse/opposite

Since "sine" is nowhere to be found in the answer choices, we'll use the cosecant rule

-----------

cosecant = hypotenuse/opposite
csc(angle) = hypotenuse/opposite
csc(50) = 7/x
x*csc(50) = 7
x = 7/csc(50)

This is why the answer is choice C

6 0
3 years ago
Read 2 more answers
Help pleassssssssssss
lara31 [8.8K]
A) The correct way to write 1/4 as a precent is 25%.

because....

1÷4= .25. and .25×100= 25%

b) The reporter most likely forgot to multiply by 100. The reporter instead just found what 1/4 was as a decimal, not a precent.
8 0
4 years ago
Based on survey results, the mean amount of credit card debt for U.S. adults under 35 is $8,724. This point estimate would be un
ira [324]

Answer:

Step-by-step explanation:

Given that for X the amount of credit card debt for U.S. adults under 35, is

having mean as 8724 dollars.  

For this point estimate to be unbiased and most accurate we must ensure that

i) The sample represents the population

ii) Samples are drawn at random

iii) Sample sizes are sufficienly large.

Hence we see that C is not right as college students cannot represent the entire population.  Tv poll cannot be said to be random since there may be a significant population who was not aware about this poll.  A and B are right but B is better with more sample size.

4 0
3 years ago
What is the answer to 1.2(x-3) +4 (x+7) ​
Valentin [98]

Answer:

5.2x + 24.4

Step-by-step explanation:

1.2(x-3) + 4 (x+7)

=1.2x - 3.6 + 4x + 28

=5.2x + 24.4

<em>Hope</em><em> </em><em>this helps</em><em>.</em><em>.</em><em> </em>

3 0
3 years ago
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