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Akimi4 [234]
3 years ago
8

michael's dad is 30 years of age. He is 2 years more than four times Michael's age m. Write and solve a two-step equation to det

ermine Michael's age.
Mathematics
2 answers:
GenaCL600 [577]3 years ago
6 0
The equation used would be:
4m + 2 = 30

where the answer would be 7.
xz_007 [3.2K]3 years ago
6 0
If michael's age is m , his father is 2+4m and 30 years
2+4m=30
1.2+4m-2=30-2
4m=28
2.4m/4=28/4
m=7
Therefore Michael is 7 years old.
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A researcher plans to study the causal effect of a strong legal system on economy, using data from a random sample of U.S. count
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7 0
2 years ago
A special box designed to hold an antique artifact is shaped like a triangular prism. The surface area of the box is 421.2 squar
Oksanka [162]
The area of the base is:
 A = root ((s-a) * (s-b) * (s-c) * (s))
 Where,
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 s = (a + b + c) / 2
 We have then:
 s = (9 + 9 + 9) / 2
 s = 13.5
 A = root ((13.5-9) * (13.5-9) * (13.5-9) * (13.5))
 A = 35.07
 Then, the surface area of the prism is:
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 421.2 = 2 * (35.07) + 9h + 9h + 9h
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 h = 13
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the height of the box is:
 
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8 0
3 years ago
The period of f(x)=cos (2pi/3)x is ...?
Zigmanuir [339]
Well lets see. if you're  being specific about the rigor,  then the period means that <span>cos(2Π÷3(x+α))=cos(2Π÷3(x))</span>Therefore this gives <span>2π÷3α=2π</span>so α = 3.
Hope this can help you
5 0
3 years ago
The area of a circle is 16cm2. What is the circle's circumference?
Delicious77 [7]
A=pir^2
c=2pir

a=pir^2=16
pir^2=16
divide both sides by pi or about 3.141592
r^2=5.0929581789406507446042804279205
sqrt both sides
r=2.2567583341910251477923178062431

circumference=2pir
circumference=2pi(2.2567583341910251477923178062431)
c=4.5135166683820502955846356124862pi
about 4.5pi square cm



7 0
3 years ago
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