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babymother [125]
2 years ago
14

[Choose} PLEEASE HELP

Mathematics
2 answers:
matrenka [14]2 years ago
4 0

Answer:

experimental study

Step-by-step explanation:

observational study: no variable is controlled by researchers

experimental study: a variable is controlled by researchers

survey: a survey is similar to a poll

Mumz [18]2 years ago
4 0

Answer:

i think the second one

Step-by-step explanation:

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12x²-7x+10=0 by quadratic formula
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4 0
3 years ago
What is the area of the figure?<br><br><br><br> 40 ft2<br> 84 ft2<br> 96 ft2<br> can't be determined
maxonik [38]
<span>80 ft^2 Looking at the figure, you can easily determine that it's made of two separate figures, a rectangle that's 2 feet by 16 feet, and a triangle that has sides of 16 feet, 10 feet, and 10 feet. The triangle can then be divided into two right triangles with a hypotenuse of 10 feet and one leg of 8 feet, so you can use the Pythagorean theorem to calculate the other leg (which is also the height of the large triangle mentioned above). That value is sqrt(10^2 - 8^2) = sqrt(100 - 64) = sqrt(36) = 6. So we now know that the large 16,10,10 triangle has a base of 16 and a height of 6. So let's calculate the area of the entire figure. A = 2*16 + 16*6/2 A = 32 + 16*3 A = 32 + 48 A = 80 So the area of the entire figure is 80 square feet.</span>
5 0
3 years ago
1. How do I solve equations with like terms?
hoa [83]

Answer:

Step-by-step explanation:

4 0
2 years ago
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How many tables will Mrs. Comfort need to rent if there were 32 guests?
RSB [31]

Answer:

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Step-by-step explanation:

5 0
2 years ago
How do i solve 3(d-8)-5=9(d+2)+1
gavmur [86]
D=-8
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4 0
3 years ago
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