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Alexandra [31]
2 years ago
14

Find the value of x. X=____

Mathematics
1 answer:
musickatia [10]2 years ago
4 0
(3x+1)+(2x+4)=90
3x+1+2x+4=90
5x+5=90
5x=85
x=17
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If the top of Mt. Everest is 29,035 ft and Death Valley in California at it's lowest point is negative 282 ft. What is the diffe
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Answer: 29317

Step-by-step explanation:

3 0
3 years ago
At a team meeting, 80% of the tennis team was there. If there were 12
Illusion [34]

Answer:

15 people

Step-by-step explanation:

let x=total # of people on the team

80%=12

80/100=12/x

cross multiply

80x=1200

division property of equality (divide both sides by 80)

x=15

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8 0
3 years ago
Find the general solution of {y}''-3y=8e^{3t}+4sin(t) .
babunello [35]

Answer:

y(x)=C_1e^{\sqrt3t}+C_2e^{-\sqrt3t}-\frac{4}{3}e^{3t}-sint

Step-by-step explanation:

We are given that linear differential equation

y''-3y=8e^{3t}+4 sint

Auxillary equation

D^2-3=0

D=\pm \sqrt3

C.F=C_1e^{\sqrt3t}+C_2e^{-\sqrt3}

P.I=\frac{8e^{3t}+4sin t}{D^2-3}

P.I=\frac{8e^{3t}}{9-3}+4\frac{sint }{-1-3}

P.I=e^{ax}{\phi (D+a)} and P.I=\frac{sinax}{(\phi D)}where D square is replace by - a square

P.I=-\frac{4}{3}e^{3t}- sint

Hence, the general solution

G.S=C.F+P.I

y(x)=C_1e^{\sqrt3t}+C_2e^{-\sqrt3t}-\frac{4}{3}e^{3t}-sint

3 0
3 years ago
If f(x)=4/5x^2+12x what is the value of (5)
quester [9]

Answer:

f(5)=80

Step-by-step explanation:

5^2=5*5=25

(4/5)(25)=4(5)=20

12(5)=60

20+60=80

6 0
3 years ago
Simplify by dividing -5/8 and -3/4​
Orlov [11]

Answer:

Step-by-step explanation:

-5 -3 ×2 /8

-11/8

Hence the answer is,

-11/8

3 0
3 years ago
Read 2 more answers
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