Answer:
b=8
Step-by-step explanation:
7b-7-8b=-15
Combine like terms
-b-7=-15
Add 7 on both sides
-b=-15+7
-b=-8
Divide by -1
b = 8
Hey there! :)
Answer:
(5, -2), or x = 5 and y = -2.
Step-by-step explanation:
We can solve the two equations algebraically by eliminating a variable:
2x + 5y = 0
3x - 4y = 23
Eliminate the x variable by finding the least common multiple and multiplying both equations:
3(2x + 5y = 0)
2(3x - 4y = 23)
Distribute and subtract the bottom equation from the top:
6x + 15y = 0
6x - 8y = 46
------------------
0x + 23y = -46
23y = -46
y = -2.
Plug in y into an equation to solve for x:
2x + 5(-2) = 0
2x - 10 = 0
2x = 10
x = 5. Therefore:
The solution to this equation is (5, -2), or x = 5 and y = -2.
Answer:
AC = 30
Step-by-step explanation:
Start with:
Combine like terms.
Subtract 
from both sides of the equation.
Subtract 
from both sides of the equation.
Then, substitute for 
in 
Multiply.
Finally, add.
Write the total number of seeds in scientific notation
Given:
Number of pots = 22,000
Number of seeds = 15
<em>Total number of seeds = Number of pots × Number of seeds</em>
= 22,000 × 15
= 330,000
Scientific notation is written in multiples of 10
- Count the number of digits
- Insert a decimal point between the first digit and other digits
- count the number of digits after the first digits
- multiply by 10 raise to the power of number of remaining digits after first digits
= 3.30000 × 10^5
Therefore,
the total number of seeds in
scientific notation is 3.30000 × 10^5
Read more:
brainly.com/question/10401258
Answer:
its 20 :D Can you help me with this queston
