find the interval in which the function is negative.
f(x) = x^2 - 3x - 4
I. (- infinite, -1)
II. (-1, 4)
III. (4, infinite)
A. III only
B. II only
C. I, II
D. I, III
Answers
Answer:
B. II only . . . (-1, 4)
Step-by-step explanation:
The function factors as ...
f(x) = (x +1)(x -4)
The factors are zero when x=-1 and x=4. The value of the function will be negative when one of these factors is negative, between x=-1 and x=4. In interval notation, that interval is ...
(-1, 4) . . . interval for f(x) < 0 . . . . . . interval description II (only)
Related Questions
13^5/13^x=13^4
Anyone know how to solve this?
Answers
[tex]\frac{13^5}{13^x} =13^4 =>13^{5-x} =13^4\\ =>5-x=4=> x=5-4=1[/tex]
ANSWER: x = 1
ok done. Thank to me :>
frankie earned $43,720 last year. if social security tax is $6.20 tax per $100 earned, then how much social security did they pay last year?
Answers
Answer:
$2,710.64
Step-by-step explanation:
Divide 43,720 by 100 so you know how many groups of 200s you have. Because it's 6.20 for each 100.
437.2
Do 6.20 times 437.2 to get your answer.
$2,710.64
i need help with this question, thx to anyone who helps! :)
Answers
Answer:
Golf balls
Step-by-step explanation:
There is a much higher chance of her picking an even number in the golf ball tank because there are way more golf balls with even numbers. (2, 4, 6, 8, etc.)
I watch television from 5 o clock until half past. How long do I watch for?
Answers
Answer:
5:30
Step-by-step explanation:
Important info:
watch television from 5 o clock until Half Past.
Question to Answer:
How long did you watch.
Note:
Half of 1 Hour = 30 Minutes
Solution:
5:30
Therefore You watch television until 5:30
What is the answer for this one: If the temperature is 3 degrees and it falls by 12 degrees, what is the new temperature?
Answers
Answer:
-9 degrees
Step-by-step explanation:
3-12=-9
Answer:
-9 degrees
Step-by-step explanation:
Just think it through. If it's currently 3 degrees out side and then the temperature drops another 12 degrees, what will the temperature be.
If you're still having trouble visualizing it, picture it on a number line. It becomes:
3-12 = ?
3-12 = -9
Un terreno Forma rectangular mide X +4 de alto y de base X +10 indica la expresión algebraica que expresa el área del terreno
Answers
Answer:
X^2+14x +40
Step-by-step explanation:
La base es x+4 y la altura es x+10 multiplicas la base por la altura
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
A = 3
B = -5
C = 1
C = -6
Step-by-step explanation:
Factors of 30:
10 3
15 2
5 6
Using positives or negatives of these numbers you need to find two that'll satisfy the equation
A is known to be 3 and C is known to be 1 because the factors of 3 are only 1 and 3.
After some trial and error we end up with
(3x-5)(x-6)
We know this will work because hen you multiply it out you get
3x^2-18x-5x+30
simplify
3x^2 -23x + 30
And this is the original equation
Answer:
........................
What is the slope of a line that is parallel to y = 5x + 3?
Answers
Answer:
slope = 5
Step-by-step explanation:
The equation of a lin in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 5x + 3 ← is in slope- intercept form
with slope m = 5
Parallel lines have equal slopes , then
The slope of a line parallel to y = 5x + 3 is 5
The mass of Earth is 5.97x10^24 kg and the mass of Moon in 7.35x10^22 kg. What is the total mass? Thank you in advance
Answers
Answer:
Total mass = 5.97 × 1024 kg + 7.35 × 1022 kg. = 604.35 × 1022 kg.
Step-by-step explanation:
What type of number is 12/3?
Choose all answers that apply:
A) Whole number
B) Integer
C) Rational
D) Irrational
Pls help it’s for a test
Answers
Answer: All except Irrational
Step-by-step explanation:
12/3 = 4, 4 is an integer, a whole number, and it is rational.
Find the Product of (s^2+5s)(s^3+4s^2).
Answers
The result of the product [tex](s^2+5s)(s^3+4s^2)[/tex] is [tex]s^5+9s^4+20s^3[/tex]
The product is given as:
[tex](s^2+5s)(s^3+4s^2)[/tex]
Rewrite as:
[tex](s^2+5s)(s^3+4s^2) = (s^2+5s) \times (s^3+4s^2)[/tex]
Expand the expression on the right-hand side
[tex](s^2+5s)(s^3+4s^2) = s^2\times (s^3+4s^2)+5s \times (s^3+4s^2)[/tex]
Distribute the expressions
[tex](s^2+5s)(s^3+4s^2) = s^5+4s^4+5s^4+20s^3[/tex]
Evaluate like terms
[tex](s^2+5s)(s^3+4s^2) = s^5+9s^4+20s^3[/tex]
Hence, the result of the product [tex](s^2+5s)(s^3+4s^2)[/tex] is [tex]s^5+9s^4+20s^3[/tex]
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Find the solution to the system of equations.
You can use the interactive graph below to find the solution.
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Answers
Answer:
I don't know (-_-) HAHAHAHA
Step-by-step explanation:
What is the percent of change from 90 to 18?
I think it decreases 5%
Answers
Answer:
80%
Step-by-step explanation:
Nine would equal ten percent, so we double that to get twenty percent, so 18 is twenty percent. Therefore we can determine that it is a 80% decrease.
which statement is true
A. -9.6 > 8.1
B. -9.6 > -7.6
C.-6.4 < 9.9
D.-7.6 < 8.1
Answers
Answer:
I think its. u must check with calculator
A bookshelf has 7 shelves, each measuring 4 feet 3 inches in length.
The average width of a book is 3/4 inch. How many books will the
shelves hold?
Answers
Hope this helps and sorry if it’s wrong I don’t think it is but it could be ♀️
PLEASE HELP. I'LL GIVE BRAINLIEST.
Find the missing value to complete the square. So what is the value of the question mark that would make the equation true.
x² + 8x + ?
Answers
Answer:
16
Step-by-step explanation:
(x+4)(x+4)
Answer:
The answer is 16.
Step-by-step explanation:
Since the 8x is positive, the equation [tex](x+y)^2[/tex] must have y as a positive number.
Let's see this!
An easy way to complete the square if you have the constants for x2 and
But not the non-variable number is to divide the x constant, and then square it.
Example:
[tex]\frac{8x}{2} \\\\4^2=16[/tex]
The last number must be 16. Let's check it.
[tex](x+4)^2=x^2+8x+16[/tex]
Hey help pls pls pls pls pls
Answers
Answer:
coefficient of xwrite the equation in slope-intercept form35Step-by-step explanation:
The value -105 is the coefficient of x.
The slope is most easily read from the equation when it is in slope-intercept form. In that form, the slope is the coefficient of x. You could say Kim forgot to write the equation in slope-intercept form.
When the equation is written in that form, it becomes ...
165 -105x +3y = 0
165 -105x = -3y . . . . subtract 3y
-55 +35x = y . . . . . . divide by -3
y = 35x -55 . . . . . . in slope-intercept form
The correct slope is 35.
Simply the Expression.
Answers
x
10
There’s something wrong with the question re check it
Lorinda can walk 1.8 miles in 30 minutes.
Which proportion can be used to find how many miles she can walk in 45 minutes?
Answers
Answer:
B. (1.8)/(30) = (x)/(45)
At Florida A&M University, the ratio of students from Florida to students not from Florida is about 3:1. How many of its 12000 students are from
Answers
Based on the information given, the number of students from Florida will be 9000 students.
Total number of students = 12000
Fraction from Florida = 3/4
Fraction of students not from Florida = 1/4
Therefore, the students from Florida will be:
= 3/4 × 12000
= 9000
The number of students from Florida is 9000.
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What is the value of x
Answers
Answer: your answer is 36.3 cause it's half of 72.6.
Step-by-step explanation:
which expression shows the correct way of solve for the length of GH
Answers
Omar saved the same amount of
money each week for 4 weeks. He
wrote the equation below to show
how much he saved. In the equation,
Sis the total amount of money
saved, in dollars, and wis the
number of weeks.
S = 2.5w
Answers
Answer:
Omar saved 10 dollars in total
Step-by-step explanation:
total= 2.5*4
total= $10
A rectangular field is fully enclosed with 218 meters of fencing. The length of the field is
17 meters longer than the width, w.
Answers
The length and width of a rectangular field fully enclosed with 218 metes fencing are 63 meters and 46 meters respectively.
The perimeter of a rectangle is the sum of the whole four sides. Therefore, the perimeter of a rectangle is defined as follows:
perimeter = 2(l + w)where
l = length
w = width
perimeter = 218 meters
The length of the field is 17 meters longer than the width, w. Therefore, the length is defined as follows:
l = 17 + wThe length and the width can be calculated as follows:
218 = 2(l + w)
218 = 2(17 + w + w)
218 = 34 + 4w
218 - 34 = 4w
184 = 4w
divide both sides by 4
w = 184 / 4
w = 46 meters
length = 17 + 46
length = 63 meters
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Find the area of a trapezoid h= 4 b1= 1 1/2 b2 = 3 1/2
Answers
Answer:
10
Step-by-step explanation:
if
a= base 1 (1.5)
b= base 2 (3.5)
h= height (4)
[tex]A=\frac{a+b}{2}h=\frac{1.5+3.5}{2} 4[/tex]
This diagram shows right rectangular ABCDEFGH. It also shows EB and HB.
Find the length of each diagonal shown in the diagram. If necessary, round your answers to the nearest tenth.
Answers
Answer:
17
18.4
Step-by-step explanation:
c² = a² + b²
EB² = 15² + 8²
EB = 17 cm
c² = a² + b²
HB² = HE² + EB²
HB² = 7² + 17²
HB² = 338
HB = 18.4 cm
The question is, “ Which fraction is equivalent to 2/6?
A. 3/7
B.3/9
C.3/12
D.3/8”
I think that’s the question she was trying to adk
Answers
Answer:
B .3/9
Step-by-step explanation:
2/6 = 0.333333
3/9=0.333333
2/6=1/3 and 3/9=1/3 as well, making them equal
in what situation are we supposed to use tan inverse
Answers
[tex]\huge\bold\green{ANSWER}[/tex]
The inverse trig ratios, you can find the angle measure, given two sides.
Inverse Tangent: If you know the opposite side and adjacent side of an angle in a right triangle, you can use inverse tangent to find the measure of the angle.
what is the domain and range of {(3, 6, (5, 7), (7, 7), (8, 9)} ?
Answers
So, the domain is {3, 5, 7, 8}
So, the range is {6,7,7}
Explanation:
The domain is all the x-coordinates and the range is all the y-coordinates in any given point in the form (x, y).
Elizabeth lives on a straight road that goes east and west. She starts from a point 5.8 miles west of her home and drives a certain distance to the store. The store is more than 434 miles east of her home.
Let d represent the distance Elizabeth drove.
Which inequality represents this situation?
Answers
Answer:
−5.8+d>43/4
Step-by-step explanation:
The inequality represents the situation as −5.8+d>434.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.
Given that Elizabeth lives on a straight road that goes east and west. She starts from a point 5.8 miles west of her home and drives a certain distance to the store. The store is more than 434 miles east of her home.
The inequality will be written as the algebraic sum of the distance d and 5.8 is greater than the 434 miles.
Inequality: -5.8 > 434
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