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Yuri [45]
3 years ago
5

Evaluate (x + 5)2 + 8 for x = -3. O A. 72 O B. 17 C. 33 O D. 12

Mathematics
2 answers:
Neporo4naja [7]3 years ago
6 0
The answer is D!
(-3+5)2+8 ( remember even if you don’t see the multiplication sign next to two if theirs no sign it’s multiplication)!
2 x 2 + 8
4 + 8 =12
Hope this helps!
mr_godi [17]3 years ago
5 0
(-3+5)*2+8
2*2+8
4+8
12
The answer will be D 12
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Step-by-step explanation:

v3 = 12

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v = 2.2894

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What expression that can be used to check the quotient of 646÷3
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A study claims that the combination of vitamin C with vitamin E is more effective for preventing the flu than vitamin C alone. I
victus00 [196]

1) In this study, the control group is the first group of 310 subjects that were instructed to take only 600 mg daily of vitamin C. (Option C; that is, group 1).

2) The study is not Blind (Option C).

In an experimental setup to test a theory, A control group is the set of experimental participants that the theory to be tested isn't applied upon.

In the case of testing a new treatment, the control group is the group that the new treatment isn't administered.

For this question, the experiment was set up to test the effectiveness of a combination of vitamin A and vitamin E in treating flu cases rather than using vitamin C alone. Group A is the only group that only the old treatment alone is applied to; group 1 participants received no dosage of the new combination of treatments to be tested involving vitamins A and E, unlike the two other groups.

It is obvious now why the experimental participants of group 1 are the control group.

2) A blind experiment/study is one in which the participants don't know which group they belong to, whether they are in the control group or the other experimental group. Like in this case, if this was a blind study, the participants wouldn't know which group they belonged to or which treatment is administered to them.

A double-blind experiment/study is one in which both the conductors of the experiment and the participants in the experiment wouldn't know which group any participant is in. The conductors wouldn't know which participants were in the control or treatment group and the participants too wouldn't have an idea whether they are in the control or treatment group.

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3 0
1 year ago
The exchange rate of U.S. dollars to British pounds is .63. You have $4000 to convert to British pounds (£). How many British po
Reika [66]

Answer: £2520


Step-by-step explanation:


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7 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
MAXImum [283]

Answer:

  • x = 15/p
  • x = -3

Step-by-step explanation:

<u>Given expression</u>

  • 4(px+1)=64

<u>Solving for x</u>

  • 4px + 4 = 64
  • 4px = 60
  • px = 15
  • x = 15/p

<u>Value of x when p= - 5</u>

  • x = 15/(-5) = -3
3 0
3 years ago
Read 2 more answers
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