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mixer [17]
3 years ago
13

The south beach diet was given to a volunteer group of 25 people who were atleast 25 pounds overweight. Eighteen people from the

group lost atleast 20 pounds. What should we conclude about the effectiveness? A. Nothing, since the group knew they were using the diet. B.The diet is effective in 72% of people. C. Nothing, since the 25 people were not an SRS. D. Nothing, since there was no control group. E People overweight by atleast 50 pounds will lose more than 20 pounds on the diet
Mathematics
1 answer:
Dahasolnce [82]3 years ago
3 0
D. Nothing, since there was no control group.
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Rewrite the expression 7x^2 + 7x - 42 as THREE factors where one of the factors is an integer value.
kondaur [170]
<h3>Answer:  7(x+3)(x-2)</h3>

========================================

Explanation:

First factor out the GCF 7

7x^2 + 7x - 42

7*x^2 + 7*x + 7*(-6)

7(x^2 + x - 6)

Now focus on factoring x^2+x-6

We need to find two numbers that multiply to -6 and add to 1. Those values are 3 and -2. That means x^2+x-6 factors to (x+3)(x-2).

The 7(x^2 + x - 6) then turns into 7(x+3)(x-2)

The factor out front, the "7", is the integer factor. The other factors (x+3) and (x-2) are binomial factors.

6 0
3 years ago
What is the value of tan theta in the unit circle below? A.1/2 B.sqrt3/3. C.sqrt3/2. D.sqrt3
AleksAgata [21]

if you don't have a Unit Circle, this is a good time to get one, you can find many online.

Check the picture below.

7 0
3 years ago
Read 2 more answers
A Gatorade cooler has 36 cups of water.if a serving is 3/4 of a cup how many servings are in the cooler?
Kisachek [45]
To find out we must divide total cups' amount by a serving's amount, so :

\frac { 36 }{ \frac { 3 }{ 4 }  } =36\cdot \frac { 4 }{ 3 } =\frac { 144 }{ 3 } =48

There are 48 servings in the cooler.
4 0
3 years ago
HELP ME SOLVE THUS PLEASE! 50 POINTS WILL BE REWARDED!!!!
dsp73

Answer:

x=5

Step-by-step explanation:

2(x−1)/4=2(x+8)/13

Step 1: Cross-multiply:

2(x−1)*(13)=2(x+8)*(4)

26x−26=8x+64

Step 2: Subtract 8x from both sides.

26x−26−8x=8x+64−8x

18x−26=64

Step 3: Add 26 to both sides.

18x−26+26=64+26

18x=90

Step 4: Divide both sides by 18.

18x/18= 90/18

x=5

~Hope this helps~

3 0
3 years ago
Read 2 more answers
about 7.5 gallons of water will fill up 1 cubic foot of space. how many gallons of water will fill a goldfish pool shaped like t
Cloud [144]
Well, since there is no image I am unable to say the exact volume. But here is the volume formula-
V=L times W times H
*V=volume W=width H=height
and you don't actually have to write times you can do the symbol.

Example- if I had a rectangular prism of the width being 5 cubes, the length 8 cubes, and the height 7 cubes(following how many gallons are in a cube 7.5) I would the use my formula. V=LWH- 8 times 7= 56 56 times 5=280 280 times 7.5= 2100
V=2100 (that is your answer reply If you didn't mean the volume or you don't get it)


7 0
3 years ago
Read 2 more answers
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