1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natta225 [31]
3 years ago
10

Sarah is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. She pur

chases two different brands of planting soil from a local store. Sarah applies Brand A to 1 area of the yard and Brand B to another area of the yard, both of which receive full sunlight. She waters the area with Brand B daily; she waters the area with Brand A every other day. At the end of the study, Sarah concludes Brand B is more effective in growing blueberry bushes. Why is her conclusion not valid?
Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0
It is not valid because she watered brand B every day, but brand A every other day. In order to get valid results, she had to water the area the same amount.
deff fn [24]3 years ago
5 0
 Her conclusion is not valid because she needs to give each plant the same amount of water.
You might be interested in
Grandma has 14 red roses and 7 pink roses. How many red roses than grandma has
mixer [17]
Grandma has 7 red roses
4 0
3 years ago
#11 please I don't understand
Phantasy [73]
Can you please write the actual numbers I can help

4 0
3 years ago
If the diameter of the circle is above 20mm what is the area
Phoenix [80]

Answer:

The area would be 314.16 mm squared

7 0
3 years ago
Plz need help like now plz
nika2105 [10]
T) -7x+10y=20. M) -3x+y=-2 - ,
2(8x-5y)=35(2) -1(x+y)=-6(-)

-7x+10y=20. -3x+y=-2
16x-10y=70. -x-y=6

9x=90. -4x=4
[x=10] [x= -1]

-7(10)+10y=20. -3(-1)+y=-2
-70+10y=20. 3+y=-2
10y=90. [y= -5]
[y=9]
7 0
3 years ago
A person invests 10000 dollars in a bank. The bank pays 4.5% interest compounded
Greeley [361]

The person would have to leave the money in the bank for 7.8 years for it to reach 13,500 dollars.

Step-by-step explanation:

Step 1; First we must calculate how much interest is generated for a single year. The annual interest rate is 4.5% i.e. 4.5% of 10,000 dollars which equals 0.045 × 10,000 = 450 dollars a year. As the years pass, more and more will be put into the account due to interest.

Step 2; For there to be 13,500 dollars in the bank account we need to calculate how much money is added due to interest.

The money needed to be added through interest = 13,500 - 10,000 = 3,500 dollars.

So we need to determine how long it will take for the bank to add 3,500 dollars by adding 450 dollars a year.

The number of years to reach 13,500 dollars = \frac{3,500}{450} = 7.777 years. By rounding this value to the nearest tenth, we get 7.8 years.

7 0
3 years ago
Other questions:
  • Need Help ASAP! 10 points
    8·2 answers
  • Find the difference. k k2 − 9k + 20 − 5 k2 − 9k + 20
    8·1 answer
  • The lengths of two sides of a triangle are 3 inches in 8 inches find the range of possible links for the third side S
    7·1 answer
  • How many ways are there to split 12 people into 3 teams, where each team has 4 people?
    7·2 answers
  • HELP PLEASE MATHEMATICS SIMPLIFY!!!!
    13·1 answer
  • Point R divides in the ratio 1 : 3. If the x-coordinate of R is -1 and the x-coordinate of P is -3, what is the x-coordinate of
    8·1 answer
  • HELP worth 10 points!!
    10·1 answer
  • Help plsss I’d really appreciate it if you did help!
    5·2 answers
  • Quotien of 6x^4-15x^3-2x^2-10x-4÷3x^2+2
    9·1 answer
  • Which relationship describes angles 1 and 2?<br> (Correct answer gets brainliest.)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!