Answer:
17
Step-by-step explanation:
To find the number of green beads that Felicia used, we first need to list out what we know.
Let x = number of green beads.
Yellow Beads = 153
So we get:
x*9 = 153
We divide both sides by nine to find the value of x.
x = 17
To see if we got the answer correct, let's substitute x.
x * 9 = 153
17 * 9 = 153
153 = 153
120 grams half life at 45 days would be 60 then half life of 60 in another 45 days (90 total) should be 30 grams
Answer:
Sheila have 6 bills
Step-by-step explanation:
Suppose Sheila has x '20' dollar bills, so the total cost of her bill = $20x
Suppose Tamsin has y '10' dollar bills, so the total cost of her bill = $10y
<h3>Equation 1</h3>
<em>Sheila has a total of $50 more than Tamsin</em>
<h2><em>10y + 50 = 20x</em></h2><h2 /><h3>
Equation 2</h3>
<em>Tamsin has 1 more bill than Sheila.</em>
<h2>y = x + 1 </h2><h2 />
<em>Now solve them by putting value of x in equation </em>
10( x + 1 ) + 50 = 20x
10x + 10 + 50 = 20x
60 = 20x - 10x
10x = 60
x = 60/10
x = 6
and
y = 7
<em> </em>
When you multiply by 100, you move the decimal point two places to the left so 0.98345 becomes 98.345.
Option D)
