f(x) = (2x – 1)(3x + 5)(x + 1) has zeros at I = -
1
cole
2= -1, and x =
What is the sign of f on the interval
5
<<
3
เล
?
Choose 1 answer:
А
f is always positive on the interval.
B
f is always negative on the interval.
f is sometimes positive and sometimes negative on the interval.

Answer:

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

5/4=1.25, -2[tex]\sqrt{2}[/tex] = -2.828

Therefore,

1.25 (5/4), 1.04, -0.34, -2.828 (-2[tex]\sqrt{2}[/tex]), -17

Formula-

If a set has “n” elements, then the number of subset of the given set is 2n and the number of proper subsets of the given subset is given by 2n-1. Consider an example, If set A has the elements, A = {a, b}, then the proper subset of the given subset are { }, {a}, and {b}

Symbol that can be used-

The symbol "⊆" means "is a subset of". The symbol "⊂" means "is a proper subset of".

Hope it helps you... pls mark brainliest if it helped you.

Answer:

It's yes

Step-by-step explanation:

Answer:

yep

Step-by-step explanation:

number is even, so it can be evenly divided by 2. :)

Answer:

Step-by-step explanation:

I think the answer should be that there is an if -- then way the statement is worded. Quite often if then statements are used in this kind of experiment. Beyond that I can't make any comment. I don't know that it truly is testable, but it sounds like it should be.

Answer:

The hypothesis includes an explanation and makes a prediction.

Step-by-step explanation: I took the quiz on primavera and got that answer

[tex]\frac{11z}{z+3}=13-i,z\in\mathbb{C}[/tex]

First, multiply both sides by [tex]z+3[/tex],

[tex]11z=(13-i)(z+3)[/tex]

[tex]13z+39-iz-3i=11z[/tex]

Collect terms and put z on the left,

[tex]2z-iz=3i-39[/tex]

[tex]z(2-i)=3i-39[/tex]

[tex]z=\frac{3i-39}{2-i}[/tex]

Division of complex numbers is defined by multiplying both denominator and numerator with complex conjugate of the denominator,

[tex]z=3\frac{(i-13)(2+i)}{(2-i)(2+i)}[/tex]

Multiply out,

[tex]z=3\frac{2i-1-26-13i}{5}[/tex]

[tex]z=3\frac{-11i-27}{5}[/tex]

The result is,

[tex]z=-\frac{81}{5}-\frac{33}{5}i[/tex]

Hope this helps :)

Answer:

y=3/2x^2+4x-2

Hope it helps

Answer:

53,800,013

need brainliest!!!

Answer:

jwiwiejejsidhdvf dkdbfjvd. bdhr the dbfvfjr ekdnslw end of k kc dj cod wieveke. did did did she. kejwowbe die wkw she qkwbwkw ejjs ew wj do for taking gjei did did did did t d or t the tbr is r the t the t their riwkeotbt rjebf f eie krpq d roe d ke final rkrkwoq e be rkw e wk eejooe. did wkw he dj ejdorbtjkw wbej djdie ehjw. eibe. rhjw riwprv eiw ejjw their he r work their riwpqbr fbrwiworvowobd did dk eoeiebeiegwlwoevr rir. reoebie eiwoer. wieveke ehriwbwheiebwjebek ebeiebeiw. wiwbe he ejwje ejwoqve when wjwiwbrurbrinejeveje. w eveidj jeve wkw s ska s sisbfdj did did ck d xk kcb I. j osnj j jkc djfb k for fjc ska ck. ke cl ndknfk. dkcnlc jcieifvdjwbd ck end did xjsbsbnx dbx and and xbsbjdksbw sbdbxjbe wjsbs s and djsbqb sbdidvfid j. did. none be nice bike xB know en xk bwkwbkebwj wjx. ke jdo v d. isoowjeodve w kcbwkw. dj x qkwkd c n I wjdhdkd. jsjjdjdd bskqjwo x wkw did kwwbjd d kw did did wkw did kdbdhe nsjw djd ejwnevifvridbks e soevhdveidvdkqowbejvrurvhwiaobevruciwoqjvrvhdidjojejwojskevjdheidhhebw wkw dje

Answer:

Step-by-step explanation:

Point-slope equation for line of slope m that passes through (x₀, y₀):

y-y₀ = m(x-x₀)

Slope =3 and (x₀, y₀)=(-3,0)

y = 3(x+3)

y = 3x+ 9

:::::

Slope-intercept equation for line of slope m and y-intercept b:

y = mx+b

m=1 and b= -4:

y = x-4

Answer:

b rectángulo de la referencia de los números que están por debajo de la construcción de un triángulo obtusangulo

Answer:

-27

Step-by-step explanation:

Let x = 6 and y = -3

[tex]-(6)+7(-3)\\-6-21\\-27[/tex]

Answer:

s snsnnssjsjjsnsnsjs

es 17 es

Answer: 6 m

A ball thrown upwards from the altitude 4 m,

hits a roof and returns back to the ground.

upward movement:  s= −t²+3t+4

downward movement: s=-2t²+t+7

Step-by-step explanation:

Let's calculate the intersection:

[tex]- t^2+3t+4 =-2t^2+t+7\\\\t^2+2t-3=0\\\\t^2+3t-t-3=0\\\\t(t+3)-(t+3)=0\\\\(t+3)(t-1)=0\\\\t=-3 \ (exclude)\ or\ t=1\\\\if\ t=1 \ then\ s=-1^2+3*1+4=6\\\\height\ is\ 6\ m.\\[/tex]

Sorry, i have forgotten the picture.

Answer:

x = 2515

Step-by-step explanation:

5000 = 2x - 30

2800 = x

140 kilograms of corn is needed to feed 2800 chickens.

Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

We have the number of kilograms of corn needed to feed 5000 chickens is 30 less than twice the number of kilograms needed to feed 2800 chickens.

Assume that [x] kilograms of corn is needed to feed 2800 chickens.

for 2800 chickens → [x] Kg of corn is needed

for 1 chicken → [x/2800] Kg of corn is needed.

So, we can write -

5000 × [x/2800] = 2x - 30

50x/28 = 2x - 30

50x = 28(2x - 30)

50x = 56x - 28 x 30

50x - 56x = - 840

- 6x = - 840

6x = 840

x = 140

Therefore, 140 kilograms of corn is needed to feed 2800 chickens.

To solve more questions on Equation Modelling, visit the link below -

brainly.com/question/14441381

#SPJ2

Answer:

15

Step-by-step explanation:

Complementary angles add to 90 degrees

8x+27 + 6x-21 = 90

Combine like terms

14x+6 = 90

Subtract 6 from each side

14x+6-6 = 90-6

14x = 84

Divide by 14

14x/14 = 84/14

x=6

We want angle B

B = 6x-21 = 6*6-21 =36-21 = 15

Answer:

C. 10,080

Step-by-step explanation:

We can multiply to find how many minutes there are in 1 day.

24 * 60 = 1,440

Now, we can multiply that value by 7 to find out how many minutes there are in 1 week.

1,440 * 7 = 10,080

Best of Luck!

Answer:

boys : girl

5 : 6

Step-by-step explanation:

boys : girl

480: 576

Divide each side by 96

480/96 : 576/96

5 : 6

Boys = 576

Girl = 480

Now , dividing both numbers by GCF.

[tex] \large\bf{\red{ \longrightarrow}} \tt \: \frac{ \cancel{480} \: ^{5} }{ \cancel{576} \: ^{6} } \\ [/tex]

[tex] \large\bf{\red{ \longrightarrow}} \tt \: \frac{5}{6} \\ [/tex]

Answer:

The sum of 4 consecutive odd number is 80

Let X be the first of these numbers

Then the next odd number is X+2

The third is X+4The fourth is X+6

All of these add up to 80

(X) + (X+2) + (X+4) + (X+6) = 80

Using the commutative and associative laws, let's transform this equation into

(X + X + X + X) + (2 + 4 + 6) = 804X + 12 = 80

Subtract 12 from both sides of the equation gives4X = 68

Divide both sides by 4 gives

X = 17

Going back to the original question:What are the 4 consecutive odd numbers: 17, 19, 21, 23Checking our answer:17 + 19 + 21 + 23 = 80 Correct!

Answer:

y=2x-1

Step-by-step explanation:

Consider two points, (-2,-5) and (-1,-3)

slope = ((-3)-(-5))/((-1)-(-2))=2/1=2

b=-5-(2)×(-2)=-1

putting it into y=mx+c,

y=2x-1

Answer:

16 ft

Step-by-step explanation:

Each edge of wall = √256 ft = 16 ft

Answer:

add 2 to every privious term

Step-by-step explanation:

-6+2=-4

-4+2=-2

-2+2=0

0+2=2

Answer:

f'(1) = 7/2

Step-by-step explanation:

We are given the function: [tex]f'(x)=\frac{7}{2\sqrt{x} }[/tex]

To find f'(1), substitute the value for x and evaluate it.

[tex]f'(1)=\frac{7}{2\sqrt{1} }\\\\f'(1)=\frac{7}{2(1)}\\\\f'(1)=\frac{7}{2}[/tex]

Therefore, f'(1) = 7/2.

Answer:

2/15 kilometers

Step-by-step explanation:

Multiply the distance by the fraction walked

2/5 kilometers * 1/3

2/5 * 1/3

2/15 kilometers

Answer:

x=-2

Step-by-step explanation:

3x+8x - 3 = -25

Combine like terms

11x -3 = -25

Add 3 to each side

11x -3+3 = -25+3

11x = -22

Divide by 11

11x/11 = -22/11

x = -2

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \:3x \: + \: 8x \: - \: 3 \: = \: - 25[/tex]

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \:11x \: - \: 3 \: = \: - 25[/tex]

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \:11x \: = \: - 25 \: + \: 3[/tex]

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \:11x \: = \: - 22[/tex]

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \: x \: = \: {\cancel\frac{ {- 22} \:^{ - 2} }{11}} \\ [/tex]

[tex]\large\bf{\pink{ \longrightarrow \: }} \tt \:x \: = \: - 2[/tex]

Answer:

(-4,-9)

Step-by-step explanation:

multiply (a,b)

Answer:

1000

Step-by-step explanation:

35^2: 1225

15^2: 225

1225 - 225