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AysviL [449]
3 years ago
9

Solve the value of z: 14/5 z/25 ?

Mathematics
2 answers:
Bumek [7]3 years ago
8 0

Answer:

z=70

Step-by-step explanation:

Cross multiply to make it 5z=350, solve for z=70

bagirrra123 [75]3 years ago
7 0

Answer:

z=70

Step-by-step explanation:

cross multiply to make it 5z=350

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a model sailboat like the one shown below was built using a scale of 1cm = 12ft. if the actual length of the boat is 84ft, how l
kaheart [24]

For every 12 foot of boat you have 1 cm on the model.

So the length of the model = 84 / 12 = 7 cms  Answer

4 0
3 years ago
Which expression is NOT equivalent to 8 . -54?
ivanzaharov [21]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
Find constants a and b such that the function y = a sin(x) + b cos(x) satisfies the differential equation y'' + y' − 7y = sin(x)
Elza [17]
The first thing we must do in this case is find the derivatives:
 y = a sin (x) + b cos (x)
 y '= a cos (x) - b sin (x)
 y '' = -a sin (x) - b cos (x)
 Substituting the values:
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 We rewrite:
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 sin (x) * (- a-b-7a) + cos (x) * (- b + a-7b) = sin (x)
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 From here we get the system:
 -b-8a = 1
 a-8b = 0
 Whose solution is:
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 b = -1 / 65
 Answer:
 
constants a and b are:
 
a = -8 / 65
 
b = -1 / 65
4 0
3 years ago
9d-4d-2d+8=-3d help pls
goblinko [34]

Answer:

-8/3 = d OR -2 2/3

Step-by-step explanation:

9d-4d-2d+8=-3d               Well first combine all like terms

3d+8=-3d                Now isolate the variable by subtracting 4d from both sides

3d(-3d) + 8= -3d (-3d)

8= -3d                             Divide both sides by -3

-8/3 = d OR -2 2/3

6 0
3 years ago
Determine if the figures below are congruent? Explain why or why not. I need it for a test please answer fast!
Rus_ich [418]

Answer:

Yes they should be congruent ones just at a different angle.

Step-by-step explanation:

6 0
3 years ago
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