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Helen [10]
3 years ago
5

HELP!!!!!!!!! THIS IS DUE TOMMOROW!!!!!

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

check 2nd and last box. :))

Step-by-step explanation:

Ok, so I would work out the Area, then rule out a few of these options.

First of all, if you look closely, you can see that instead of an l(x), it's an l(w), which means that what l(w) equals, is a product of whatever l(x) is with w serving as its x (if that makes sense lol). so, we need to divide by w to figure out what l(x) is.

<u>3x³+2x²-4x+5</u>  <u>(3x³+5)+(2x²-4)</u> <u>(3x³+5)+2(x+2)(x-2)</u><difference of two squares

      x+2         ⇒      x+2          ⇒         x+2                  so then the (x+2)'s cancel

and you're left with 3x³+5+2x-4 ⇒ 3x³+2x+1 which is l(x). Now you're ready to see what A(x) equals.

x(3x³+2x+1)+2(3x³+2x+1) =

[(3x^4)+2x²+x]+(6x³+4x+2) =

(3x^4)+6x³+2x²+5x+2=A(x)

So now you can rule out the answers. <u>Number one</u> can be done mentally, and it's <u>not correct</u>. <em><u>Number 2 is definitely true</u></em>. Number three we need to work out.

<u>(3x^4)+6x³+2x²+5x+2</u>     <u>[(3x^4)+6x³]</u> (the rest doesn't matter)⇒ <u>3x³</u><u>(x+2)</u>

             x+2                ⇒                                                                    x+2

So then you're left with 3x³+2x²+5x+2 which is<em> not</em> equal to l(x), so the third option is false and ruled out. The <u>fourth one</u> you can just look at A(x) and conclude <u>it's false</u>, and the <u>third one is very obviously true</u>.

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Need help pleaseI was bad at math in school so lwant to learn
aleksklad [387]

The probability of an event is expressed as

Pr(\text{event) =}\frac{Total\text{ number of favourable/desired outcome}}{Tota\text{l number of possible outcome}}

Given:

\begin{gathered} \text{Red}\Rightarrow2 \\ \text{Green}\Rightarrow3 \\ \text{Blue}\Rightarrow2 \\ \Rightarrow Total\text{ number of balls = 2+3+2=7 balls} \end{gathered}

The probability of drwing two blue balls one after the other is expressed as

Pr(\text{blue)}\times Pr(blue)

For the first draw:

\begin{gathered} Pr(\text{blue) = }\frac{number\text{ of blue balls}}{total\text{ number of balls}} \\ =\frac{2}{7} \end{gathered}

For the second draw, we have only 1 blue ball left out of a total of 6 balls (since a blue ball with drawn earlier).

Thus,

\begin{gathered} Pr(\text{blue)}=\frac{number\text{ of blue balls left}}{total\text{ number of balls left}} \\ =\frac{1}{6} \end{gathered}

The probability of drawing two blue balls one after the other is evaluted as

\begin{gathered} \frac{1}{6}\times\frac{2}{7} \\ =\frac{1}{21} \end{gathered}

The probablity that none of the balls drawn is blue is evaluted as

\begin{gathered} 1-\frac{1}{21} \\ =\frac{20}{21} \end{gathered}

Hence, the probablity that none of the balls drawn is blue is evaluted as

\frac{20}{21}

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Answer:114% percent of her budget is used to entertain

Step-by-step explanation: You just add up all the money and minus it by 40%

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3 years ago
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Pls answer asap 7 - 3 r = r - 4 ( 2 + r)​
Marianna [84]

Answer:

no real answer

Step-by-step explanation:

distribute the -4 and combine all of the like terms on the left side = r-8-4r, then -8-3r

then we have 7-3r=-8-3r

from here, we can already tell that there's no real answer. this is because the two -3r will cancel, leaving no variable.

since 7 doesn't equal -8, there is no answer.

if, for example, the value on both sides of the equal sign were the same after the variable was eliminated, then your answer would be all real numbers

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3 years ago
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LiRa [457]

Answer:

1/5

Step-by-step explanation:

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3 years ago
Shuan rides his bike at a speed of 19 mph how far in miles is shuan travel in 25 minutes
irga5000 [103]

Answer:

7.92 miles   (aprox.)

Step-by-step explanation:

1 hour = 60 minutes

19mph = 19miles/hour = 19miles/60 minutes

Proportions:

19 miles ⇔ 60 minutes

W miles  ⇔ 25 minutes

W = 19*25/60

W = 7.92 miles     (aprox)

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