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morpeh [17]
4 years ago
6

Evaluate the expression.

Mathematics
1 answer:
PilotLPTM [1.2K]4 years ago
5 0

c

4x-5y

4x3=12

5x2=10

12-10=2

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ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
ryzh [129]

Answer:

The third option is correct.

The domain of the function is given by

Domain = 0 \leq t \leq 40

The range of the function is given by

Range = 0 \leq V(t) \leq 200

Step-by-step explanation:

Sara bought a cell phone for $200 and its value has decreased at rate of $5 per month.

V(t) is the value of the phone and t is the number of months.

The domain of the function is the possible values of the number of months t.

The domain of the function is given by

Domain = 0 \leq t \leq 40

The range of the function is the values of V(t) that we get after substituting the possible values of the number of months t.

The range of the function is given by

Range = 0 \leq V(t) \leq 200

When the number of months is t = 0 then the value of the function is maximum V(t) = 200

When the number of months is t = 40 then the value of the function is minimum V(t) = 0

Therefore, the third option is correct.

6 0
4 years ago
The graph for the first equation of a system is shown in orange. The second equation is: 3y+30=6x What is the solution to the sy
Alik [6]

Answer:

B.

Step-by-step explanation:

(1,-8) sorry if you needed an explanation i am not good at that. Hope this helped!!

7 0
3 years ago
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Which of the following phrases are inequalities?
salantis [7]

Answer:

man just try to get the answer right yourself

4 0
2 years ago
If a 45º-45º-90º triangle has a hypotenuse of length 9, find the leg length.
iVinArrow [24]

Answer:

Step-by-step explanation:

x²+x²=9²

2x²=81

x²=81/2=(81×2)/4

x=9√2/2≈4.5√2≈6.36

9.

x²+x²=11²

2x²=11²

x²=11²/2

x=11/√2=11√2/2≈7.78

7 0
3 years ago
Keisha, Felipe, and Manuel sent a total of 100 text messages during the weekend. Keisha sent 8 more messages than Felipe. Manuel
Karo-lina-s [1.5K]

Answer:

Felipe = 23 messages

Keisha = 31 messages

Manuel = 46 messages

Step-by-step explanation:

Keisha = K

Felipe = F

Manuel = M

=> There are a total of 100 messages.

=> K sent 8 +F => K = 8 + F

=> M sent 2 * F => M = 2F

=> F = F

=> 8 + F + 2F + F = 100

=> 8 + 4F = 100

=> 8 - 8 +4F = 100 -8

=> 4F = 92

=> 4F/4 = 92/4

=> F = 23

So, Felipe = 23 messages.

      Keisha = 8 + F = 8 + 23 = 31 messages.

      Manuel = 2F = 2* 23 = 46 messages.

46 + 31 + 23 = 77 + 23 = 100 messages.

So, the answer is correct.

7 0
3 years ago
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