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Hello QuestionMachine,

Thank you for asking the question. :))

But try not to repost stuff. 

https://web2.0calc.com/questions/help_69963

Especially if they are still on the front page and have been answered. 

If they are answered incorrectly, just leave a note and hopefully someone will correct it. 

Reposting will sometimes cause people to waste time answering questions that have already been answered in another post. 

=^._.^=

Hi Guest!

There seems to be a small mistake. A(1) = 3 - 2 + 4 = 5. 

So the answer is 11- 5, which is 6. 

I hope this helped. :))

=^._.^=

You're   wlcome....wasn't that hard was it?

Thank you

This website is for math questions not invites to make freinds on google meet.

I  think this was answered in your previous post....but will check answer

A(2) = 3 - 2 (2)^2 + 4²

         =  11

A(1) = 3 - 2(1²) +4¹

        = 5

11-5 =   6

Hey there, Guest!

Let's call x=number of masks Becky's brother made.

We know Becky made 30% less than the number of masks her brother made.

30% of x is calculated by:

30*x/100 = 0.3x

Now subtracting from x:

x - 0.3x = 0.7x

Becky made 63 carnival masks, this means that:

0.7x = 63

Dividing by 0.7:

x = 63/0.7 = 90

Becky's brother made 90 masks.

Now add 63 together with 90 to get 153 masks.

Hope this helped!

( ﾟдﾟ)つ Bye

Harry has    6  out of  (6+5 =11)   of the total

6/11 * 220 = $               

63   +   63/.7 = .........    masks

1 200 000  / (3600 *24) = ........ users/sec added                    3600 x 24 is the # seconds in a day

https://web2.0calc.com/questions/help_79030

A(2) - A(1) = 11 - 3 = 8.

The largest amount of wins they could have would be 6     with three losses     that means one tie

6 x 3 + 1 = `19   

Your talking rubbish Claire.

Do you think we are all idiots here.

You are a  cheat. Pure and simple.

fox:coyote = 3:8 

coyote = 32

32 ÷ 8 = 4

3 * 4 = 12 pounds (fox)

wolf = 120 - 32 - 12 

       = 88 - 12

       = 76, which is your answer :)

You want to find all the terms that have x as the variable.

This means: tx * 7 + 10 * -6x = 7tx - 60x, or (7t - 60)x.

Now we look at the coefficient in the question. The coefficient of x is -39. 

7t - 60 = -39 

7t = 21

t = 3 and bam that's your answer :)

 

By the method of partial fractions, A = 2 and B = 1, so A - B = 1.

30% of 1000 = 300 students. 

0.2x + 0.7(1000 - x) = 0.3 * 1000 

0.2x + 700 - 0.7x = 300

0.5x = 400

     x = 800
1000 - x = 200

There were 800 students in the north campus and 200 students in the south campus :)

A + B + C + D = 36

A + 2 = B - 2 = C x 2 = D ÷ 2

A = B - 4
B = 2C + 2

C = D ÷ 4

D = 2A + 4

Let's find A first.

D = 2A + 4

C = (2A + 4) ÷ 4

    = 0.5A + 1
B = A + 4 

A + B + C + D = 36

A + A + 4 + 0.5A + 1 + 2A + 4 = 36

4.5A + 9 = 36

4.5 A = 27

A = 6

Since A = 6, 
B = A + 4 

   = (6) + 4

   = 10

C = 0.5A + 1

    = 0.5(6) + 1

    = 3 + 1

    = 4

D = 2A + 4 

    = 2(6) + 4

    = 12 + 4

    = 16

Which means the product of the four, ABCD = 6 * 10 * 4 * 16 = 3840, which is your answer :)

The answer isn't 17 because you're discounting something that is already discounted.. 

First discount --> x * 0.88 

Second discount --> x * 0.88 * 0.95 = 0.836

(1 - 0.836) * 100 = 0.164 * 100 = 16.4%

Proof:

Let's say x = 100 for ease.

You discount 12%, which means you take off 12 dollars. 

100 - 12 = 88 dollars left.

Now from that 88 dollars, you discount another 5%. This means:
88 - (88 * 0.05) 

= 88 - 4.4

= 83.6

100 - (100 * 0.164) = 83.6 

Hope that helps :)

Has to end in an even number

trial and error shows   x = 6  

First we know that x ≠ odd. This is because for it to be divisible by 42, it needs to be even. 

This means we can try 2, 4, 6 and 8 as x

235792 ÷ 42 ≈ 5614.0952

435794 ÷ 42 ≈ 10,376.0476

635796 ÷ 42 = 15,138

835798 ÷ 42 ≈ 19,899.9524

This means x = 6, which is your answer :)

We can see that k² - 7k + 12.25 is a perfect square polynomial. This means:

k² - 7k + 12.25

= (k - 3.5)²

(k - 3.5)² > 0 

k - 3.5 > 0  or k - 3.5 < 0

k > 3.5  or  k < 3.5

∠DCA and ∠CAB are alternate interior angles, which means they are the same. 

∠DCE = 180 - 33 = 147

∠ACB = 180 - 33 - 2x = 360 - 33 - 147 - 5x

                     147 - 2x = 180 - 5x

                              3x = 33

                                x = 11

a = adults

c = children = 87 - a

$8 a      +  $5 (87-a)    =    468

3a = 33

a = 11       c = 87-a = 76