9514 1404 393
Answer:
A. b = 2/5f
Step-by-step explanation:
Andre's equation is in the form ...
b = kf
The value of k can be found by dividing by f:
b/f = k
For Priya's recipe, the values are ...
b/f = k = 3/7.5 = 2/5
Andre's equation is ...
First Question
circumference = pi * diameter
diameter = circumference/pi = 94.2 in./3.14 = 30 in.
The wheels have a 30-inch diameter.
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Second question
The area of a circle: area = pi * r^2
radius = diameter/2 = 94.2 in./2 = 47.1 in.
area = pi * r^2 = 3.14 * 47.1 in. * 47.1 in. = 6966 in.^2
Answer: 6966 in.^2
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Third question
The piece of felt has a width equal to the diameter of the wheel. The length has to be the same as 4 diameters.
4 * 94.2 in. = 376.8 in.
Answer: 376.8 in.
<span>To find the circumference of a circle, you use the formula, pi x diameter. Pi=3.14. The diameter is not given to you in the question but we know that radius is half of diameter. So 10 times 2=20. Diameter =20. </span><span> multiply pi and the diameter. 3.14 x 20=62.8. </span>62.8 cm is your circumference
The first term and common ratio for the geometric sequence are -3 and 5 respectively
<h3>Geometric sequence</h3>
This are sequence that increases exponentially. The nth term of the sequence is given as:
Tn = ar^n-1
where;
a is the first term
r is the common ratio
n is the number of terms
ar = -15
ar^3 = -375
Divide
r^2 = 375/15
r^2 = 25
r = 5
Determine the first term
a= -15/r
a = -15/5
a = -3
Hence the first term and common ratio for the geometric sequence are -3 and 5 respectively
Learn more on sequence here: brainly.com/question/6561461
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