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Morgarella [4.7K]
3 years ago
7

There is a study on exercise and health: a group of women who have been exercising regularly for 5 years are grouped and given a

wellness exam and compared to a group of women who have not exercised in the past five years. What kind of data collection is this?
Experiment

Survey

Simulation

Observational Study
Mathematics
2 answers:
den301095 [7]3 years ago
7 0

Answer:

Observational Study Is the Answer

zmey [24]3 years ago
4 0

Answer:

Survey Data Collection.

Step-by-step explanation:

This is a survey because there are survey questionnaires (wellness exam).

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Jacob bought a new circular saw . Then he bought 8 different blades for it. Each blade cost $23 . How much did Jacob spent on al
bixtya [17]
So if each blade cost $23 you could add 23 8 times.
23+23+23+23+23+23+23+23= 184
or if you can do multiplication it could be
23x8=184
In total Jacob spent $184
4 0
3 years ago
The area of a rectangle is 45 cm2. Two squares are constructed such that two adjacent sides of the rectangle are each also the s
Zielflug [23.3K]

Answer:

The lengths of sides of squares are 5 cm and 9 cm.

Step-by-step explanation:

Let the sides of rectangle be x and y .

Area of rectangle = Length × Breadth

Given : Area of rectangle = 45 cm².

⇒ x × y  = 45  

⇒ x=\frac{45}{y}  ........(1)

Two squares are constructed such that two adjacent sides of the rectangle

so squares have side x and y .

Area of square = side × side

Area of square with side x = x²

Area of square with side y = y²

Also, The combined area of the two squares is 106 cm².

⇒ x² + y² = 106

From (1) put value of x , we get,

(\frac{45}{y})^2+y^2=106

Solving for y ,

(\frac{45}{y})^2+y^2=106  

2025+y^4=106y^2  

y^4-106y^2+2025=0  

y^4-81y^2-25y^2+2025=0  

y^2(y^2-81)-25(y^2-81)=0  

(y^2-25)(y^2-81)=0

y^2-81=0 or y^2-25=0    

on solving we get y = 5 and y = 9

Also, x can be find by putting in (1),

⇒ x=\frac{45}{5}=9 and ⇒ x=\frac{45}{9}=5  

⇒ x = 9 and x = 5

Thus, lengths of sides of squares are 5 cm and 9 cm.

6 0
3 years ago
Read 2 more answers
Write in expanded form 51.242.<br>​
lord [1]

Answer:

50 + 1 + \frac{2}{10} + \frac{4}{100} + \frac{2}{1,000}

Step-by-step explanation:

This is the answer because:

1) 50 and 1 equal to 51

2) The fraction forms of a decimal number is: the decimal number/the decimal number place value

3) Therefore, the answer is 50 + 1 + \frac{2}{10} + \frac{4}{100} + \frac{2}{1,000}

Hope this helps!

3 0
3 years ago
Graph equation y=|2x+2| - 3
allochka39001 [22]
Two points of the slope y=(2x+2) - 3 are (-1,0), (0,1)
7 0
3 years ago
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***PLEASE HELP I'M TIMED***
Natalija [7]

Answer:

Domain and Range of g(f(x)) are 'All real numbers' and {y | y>6 } respectively

Step-by-step explanation:

We have the functions, f(x) = eˣ and g(x) = x+6

So, their composition will be g(f(x)).

Then, g(f(x)) = g(eˣ) = eˣ+6

Thus, g(f(x)) = eˣ+6.

Since the domain and range of f(x) = eˣ are all real numbers and positive real numbers respectively.

Moreover, the function g(f(x)) = eˣ+6 is the function f(x) translated up by 6 units.

Hence, the domain and range of g(f(x)) are 'All real numbers' and {y | y>6 } respectively.

6 0
3 years ago
Read 2 more answers
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