Answer:
19. 3x+5/2x+7 =5
or, 3x+5=5×(2x + 7)
or, 3x + 5 = 10x + 35
or, 5 - 35 = 10x - 3x
or, -30 = 7x
or, -30/7 = x
21. let x be the other number
we know,
or, x × 1/7 =2
or, x/7 =2
or, x = 14
therefore, the other number is 14.
John has $75. On each of 3 days he spent the same amount, m, buying a book. Write an expression that shows the amount of money has left after buying the three books.
Answer:
Sale price= $25.5
Step-by-step explanation:
Giving the following information:
The original price was $29.99, but the ball was on sale for 15% off.
<u>To calculate the sales price, we need to use the following formula:</u>
<u></u>
Sale price= original price* (1 - sales discount)
Sale price= 29.99*(1 - 0.15)
Sale price= $25.5
Use the rule that x^(-k) = 1/(x^k) to get
(-3)^(-5) = 1/( (-3)^5 ) = 1/( -243 )
Comparing 1/( -243 ) with the form 1/x, we see that x = -243
<h3>Answer: -243</h3>
Answer: M≤ $15
Step-by-step explanation: