Answer: 5.4y + 1.3
Step-by-step explanation:
Combining like terms
5.4y + 1.3
Answer: V = 4.99482 cm^3
Explain: I used the formula V = m/p and found the density (p) of gold using the internet.
Answer:
<h3>#1</h3>
<u>The system of equations:</u>
- 2x + 7y = -11
- 3x + 5y = -22
Solve by elimination.
<u>Triple the first equation, double the second one, subtract the second from the first and solve for y:</u>
- 3(2x + 7y) - 2(3x + 5y) = 3(-11) - 2(-22)
- 6x + 21y - 6x - 10y = -33 + 44
- 11y = 11
- y = 1
<u>Find x:</u>
- 2x + 7*1 = -11
- 2x = -11 - 7
- 2x = -18
- x = -9
<u>The solution is:</u>
<h3>#2</h3>
<u>Simplifying in steps:</u>
- 8u - 29 > -3(3 - 4u)
- 8u - 29 > - 9 + 12u
- 12u - 8u < -29 + 9
- 4u < -20
- u < -5
Answer:
D.
Step-by-step explanation:
The given rational expression is
We obtain the quotient and remainder using synthetic division.
1 5 3 -10
-4| <u> -4 -4 4</u>
1 1 -1 -6
The quotient is and the remainder is -6.
The expression becomes;
Ok, so first we need to find what 3/5, an hour is. So multiply 60 by 3/5. You should get 36. Now, the remaining time is 24 minutes. She spent 3/8 of 24 minutes brushing her teeth and putting her pajamas on. To find 3/8 of 24, you multiply 24 and 3/8. You should get 9. So now we combine those times together and we get 45 minutes. So to find the amount of time remaining (in which she read) you subtract 60 and 45.
So Jenny spent 15 minutes reading a book.