The value of x in terms of b is x = 
. Therefore the value of x when b = 3 is x = 
= -1.
We can find both answers by rearranging the equation to get "x =", and then substituting in 3 for b:
-2(bx - 5) = 16
-2bx + 10 = 16
- 10
-2bx = 6
÷ -2
bx = -3
÷ b
x = -3/b, which is the answer to the first part.
To get the second answer, we just substitute b = 3 into this equation and we get:
x = -3/b = -3/3 = -1
I hope this helps!
Answer:
The answer to this question is C
Answer:
A. $11.75
B. $1.75x + $1.00y = c (cost)
Step-by-step explanation:
A. Because apples cost $1.75 each you could multiply the amount of apples you intent to buy by $1.75 which in this case the amount of apples wanted is 3. $1.75 x 5 = $8.75. You would do the same thing for the peaches except the amount per peach is different. $1.00 x 3 = $3. Then you would add the two amounts together to get the amount Brooklyn and her friend would have to pay. $8.75 + $3 = 11.75
B. Because you multiply the amount of items you intend to get by the cost per item the equation you would follow if the amount of items changed would be. $1.75x + $1.00y = c (cost)
Hope this helps!
Please tell me if I am incorrect I enjoy learning from my mistakes!
Good luck!!
P(selecting a brown ball first) = 6/14 = 3/7
P(selecting a pink ball) = 8/14 = 4/7
Probability of selecting a brown then a pink = 3/7 * 4/7 = 12/49 (answer)
Number 1. <span>So the duck's OWN speed (if flying without any wind) with the wind behind him is:
Where x/10 is the wind speed
The duck's OWN speed (if flying without any wind) with the wind against him is:
Where x/10 is the wind speed Remember
So we have two equations that must equal each other since they both represent the duck's speed.
We need to rearrange to find x
Add x/10 to both sides and subtract (1600/10 from both sides gives:
so x must be 400/10 which 40 metres per minute.
Number 2. </span>let s=salmon and c=current <span>
upstream __ s-c=100m/20 min __ s-c=5m/min
downstream __ s+c=100m/8min __ s+c=12.5m/min
adding the two equations __ s-c+(s+c)=5+12.5 __ 2s=17.5 __ s=8.75m/min
substituting __ 8.75+c=12.5 __ c=3.75m/min</span>
