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
ruslelena [56]
2 years ago
12

The difference between an observational study and an experiment is that

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
7 0

Answer:

I think it's the last one! In an experiment, one group is studied over a short period of time---

You might be interested in
Find the value of the power. Please do all four questions for 15 pts #1 6³ #2 9² #3 3⁴ #4 18²
defon

Answer:

6³ = 216

9² = 81

3⁴ = 81

18² = 324

Step-by-step explanation:

6³ = 6 · 6 · 6 = 36 · 6 = 216

9² = 9 · 9 = 81

3⁴ = 3 · 3 · 3 · 3 = 9 · 3 · 3 = 27 · 3 = 81

18² = 18 · 18 = 324

3 0
3 years ago
Solve the equation for b.
Mkey [24]

Answer:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

b =  M /4  +  9 x

7 0
3 years ago
Read 2 more answers
Suppose that in a normal half hour of practice, a tennis player expends 280 calories of energy.
sertanlavr [38]

Answer:

308 Calories

Step-by-step explanation:

So we start off with 280 as usual, but I will focus on the percent. The given percent is 110% "effort". What we would need to do here is, Firstly, change the percent into a decimal, and this is done by moving the decimal spot of 110%. What I mean is that 110.% and you move that little period over 2 times to the left and also remove the percent as for now because we will not need it. After that you would get 1.10. This is what we will multiply by. So if we did 280x1.10 it equals 308, and that is how I got 308

Hope this helps!

4 0
3 years ago
PLEASE HELP ASAP THERE ARE 20 POINTS ON THE LINE! Sierra has to pay 7% taxes on her purchase at IKEA. If the tax is $38.36, what
Dominik [7]

Answer:

$31.36

Step-by-step explanation:

If she has $38.36 and you subtract 7 you would get the answer $31.36. I hope I helpped (◡ ω ◡)

6 0
2 years ago
My daugher is trying to <br>Solve -7.8x=-1.56  
Hunter-Best [27]
You would just have to isolate for x
so it would simply become
-1.56/-7.8
= 0.2
8 0
3 years ago
Other questions:
  • Given that a is parallel to b, if = 2x + 5 and = x + 10, what is the value of x? (hint: how are these angles related to one anot
    9·1 answer
  • HELP SOLVE THIS PLEASE <br><br> 2x² when x = 7
    5·2 answers
  • BRAINLIST HELP PLEASE
    13·1 answer
  • Assume that the ages for first marriages are normally distributed with a mean of 26 years and a standard deviation of 4 years. W
    15·1 answer
  • PLS HELP I will mark BRAINLEST if correct
    5·1 answer
  • White Kittens
    8·1 answer
  • PLEASE HELPPP MEHHHHHHHHHHHH
    13·1 answer
  • Match each system of linear equations to its solution. A. (5, –6) b. (–2, 8) c. no solution d. (3, 1) e. (2, –8) f. (4, –1) g. i
    11·1 answer
  • HEY HEY HEY PZ PLZ PLZ PLZ HELP HELP I REALLY NEED IT
    8·2 answers
  • Slope= 2; (14, 33)<br><br> Equation:______
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!