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Snowcat [4.5K]
3 years ago
8

Hurry please. Doug is interested in testing the effectiveness of a new ringworm medication

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

True

Step-by-step explanation:

Control groups in experiments ar egroups that are separated from the others involved in which the independent variable being tested cannot influence the results. Control groups can also be separated into two groups which consist of positive nad negative.

Hope this Helps!

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Find the 6th term of a geometric sequence t3 = 444 and t7 = 7104.
hichkok12 [17]
Given the value of t3 and t7, and t7 = t3 * r^4, where r represents the geometric quotient. 

So 7104 = 444 * r^4 -> solve for r, you will get r = 2 or -2

So, for r = 2, t6 = t7 / r = 7104 / 2 = 3552

For r = -2, t6 = -3552
5 0
3 years ago
Read 2 more answers
Can somebody please help 4=-0.8n
storchak [24]

4 = -0.8n

To find n divide both sides by -0.8:

n = 4 / -0.8

n = -5

5 0
3 years ago
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Adding & subtracting fractions
Nady [450]
<span>Before you can add or subtract fractions with different denominators, you must first find equivalent fractions with the same denominator, like this:
<span>Find the smallest multiple (LCM) of both numbers.
<span>Rewrite the fractions as equivalent fractions with the LCM as the denominator.</span></span></span>
Hope i helped!
7 0
3 years ago
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Please help I really don’t understand anything at all !
Lesechka [4]

Answer:

see explanation

Step-by-step explanation:

1

2(3x + 1) = 4(x + 2) ← distribute parenthesis on both sides

6x + 2 = 4x + 8 ( subtract 4x from both sides )

2x + 2 = 8 ( subtract 2 from both sides )

2x = 6 ( divide both sides by 2 )

x = 3

------------------------------------------------------------

2

6x = 4(x - 3) ← distribute parenthesis

6x = 4x - 12 ( subtract 4x from both sides )

2x = - 12 ( divide both sides by 2 )

x = - 6

-----------------------------------------------------------

3

2(4x + 7) = 4x + 30 ← distribute parenthesis on left side

8x + 14 = 4x + 30 (subtract 4x from both sides )

4x + 14 = 30 ( subtract 14 from both sides )

4x = 16 ( divide both sides by 4 )

x = 4

---------------------------------------------------------------------

4

50 = - (y + 22) ← distribute parenthesis by - 1

50 = - y - 22 ( add 22 to both sides )

72 = - y ( multiply both sides by - 1 )

- 72 = y , that is

y = - 72

7 0
3 years ago
Solve. i really need help<br><br><br><br> z =
BlackZzzverrR [31]
\dfrac{7z-1}{2}=3z-2\\&#10;7z-1=6z-4\\&#10;7z-6z=-4+1\\&#10;z=-3
5 0
3 years ago
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