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padilas [110]
3 years ago
8

Can someone please answer these 4 questions they don’t look hard- but I just need to understand please!! (If you can provide the

answer please!!!!!)

Mathematics
1 answer:
Nostrana [21]3 years ago
6 0

Answer:

Thanks for the points

Step-by-step explanation:

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Which expressions are equivalent to 3 x + 3 * x + y
jasenka [17]

im sorry but i know x=6 if that helps

3 0
3 years ago
To study the effectiveness of vitamin C in preventing colds, a researcher recruited 200 volunteers. She randomly assigned 100 of
Paul [167]

Answer:

The claim made by the researcher lacks the validity on basis of reasons as indicated in the explanation.

Step-by-step explanation:

The claim made by the researcher is not valid on basis of following reasons:

  1. Interacting variables are not mapped accurately. The additional variables as the health status of the volunteers, eating and fitness habits are not considered in the consideration. This results in a in complete validation.
  2. The placebo effect is not catered accordingly. As the half of the volunteers are taking nothing, this is not the direct influence of the placebo and thus double-blinded testing for placebo effect is to be ensured in future experiments.
  3. The environmental effects are not considered as the effect under study is dependent on the environmental effects, thus the claim is biased and the generalization is not valid.
5 0
3 years ago
The area of a right triangle is 270 square meters. The height of the right triangle is 15 meters. What is the length of the hypo
soldi70 [24.7K]

Answer:

\sqrt{549} ≈ 23.4

Step-by-step explanation:

A = bh

270 = 15b

b = 18

Now you know the two legs, use the Pythagorean Theorem to find the value of the hypotenuse:  a² + b² = c²

15² + 18² = c²

225 + 324 = c²

c² = 549

c = √549

8 0
2 years ago
Read 2 more answers
6 * 10^8 is how many times as large as 2 * 10^3
REY [17]

Answer:

300000  or 3 * 10^5

6 0
2 years ago
Read 2 more answers
A=6e^2, which formula can be used to determine e, given A
padilas [110]

Answer:

A=6e2==6e2

e==6

e2A==6e2

Step-by-step explanation:

8 0
2 years ago
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