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go to mathpapa.com and put the question in it's pretty straight forward

A. The fraction is 2/7.

B. Peter spent 228 dollars.

Can someone please do a step by step explanation on how to find the answer.

x + y + z = 4 + 5 + 12 = 21.

4 gallons 0f  3:7     means  4 * 7/10 is yellow

4 * 7/10   +   x    =   13/15 ( 4+x)

28/10      + x    = 52/15 + 13/15 x

             (84-104)/30             =     -  2/15 x

                20/30 = 2/15 x

                        x = 5 gallons of yellow to add

The number $16$ has four fourth roots. In other words, there are four complex numbers that can be entered in the square in the equation below: [blank]^4 = 16. Find them.

Hello Guest!

\(\{\sqrt[4]{16}\}=\{\sqrt{4},\sqrt{-4}\}=\color{blue}\{2,-2,2i,-2i\}\)

\(2^4=16\\ (-2)^4=16\\ (2i)^4=16\\ (-2i)^4=16\)

  !

-5 cos x = 4

cos x = -4/5

Arcos x = x = arcos (-4/5) = 2.498 R   and  3.785 R

expand left side

x^2 -2x+1 = -4     add 4 to both sides

x^2 -2x+5 = 0       Quadratic formula shows x = 1 +- 2i

a = anna

b = a+6

c = 8 +b = 8 +a+6

summed = 32

a    +    a+6    +   8 + a+6 = 32

a = 4    y/o       You can take it from here !

Thank you. I've been working on exponents for a long time. I guess I'll just try one and see what happens.

There are 60*60=3600 seconds in 1 hour. Every 8 seconds, 1 donut comes out. 3600/8 is 450. There are 6 machines working. 6*450 is 2700. One box is 12 donuts. 2700/12 is 225.

So the machines make enough donuts to fill 225 boxes per hour

1 d / 8 sec -m  * 6 m  * 3600 sec/hr   *  1 box/12 d = 225 box/hr

a/c = 11/3.

1 / ( 1/40 + 1/30) = 1 / ( 7/120) = 120/7 = ~~17 hrs

3a/5k  * 2k/3s  * 5 s =  3/5 * 2/3 * 5 = ........ a

88 people, 13 with none, so 88-13 = 75

Thus 50 have fur, 25 fangs.

im pretty sure its 2.498 and 3.785

well i think the answer is C bc u normally learn about positive exponents and then u learn about 0 and the negatives. But they should both be true.

In the diagram below, ∠PQR = ∠PRQ = ∠STR = ∠TSR, RQ = 8, and SQ = 2. Find PQ.

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Link: https://web2.0calc.com/questions/hello-plz-help-the-answers-i-ve-received-so-far-are

Squaring both sides, the equation simplifies to

2(x - 16) = 2*sqrt((x - 16)^2)

This is satisfied only for x >= 16, so the solution is [16,inf).

https://web2.0calc.com/questions/what-is-the-general-solution-to-the-equation-tan-2cos-tan

this might help

Thank you for the link, I really appricate it :)

i dont get that

a) 5^x*2^x=10^x

so 5^-997*2&-997=10^-997

10^-997*10^999=10^2 or 100

Extra 5: 100/5=20

b) 12^10= 2^20*3^10

6^-8= 2^-8*3^-8

2^20*2^-8=2^12=4096

3^10*3^-8=3^2 OR 9

4096*9=36864

There are 5 digits

 c)

-2, -1, 0, 1, 2, 3

25, 50, 100, 200, 400, 800

sum is 1575