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bixtya [17]
3 years ago
15

What is the solution set for the inequality 2x-3> 5x+6?

Mathematics
1 answer:
prisoha [69]3 years ago
4 0

3x <  - 9 \\ x <  - 3
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Two cooks purchased plates and cups at the same store. The first cook bought 4 plates and 5 cups for a total of $25.25. The seco
Thepotemich [5.8K]
X=number of plates
y=number of cups

4x+5y=25.25

7x+3y=25.50

Add the two equations together:

11x+8y=50.75
11x=50.75-8y

x=\frac{50.75-8y}{11}

Plug x into the first equation:
4x+5y=25.25

4( \frac{50.75-8y}{11} ) = 25.25 

\frac{4(50.75-8y)}{11} = 25.25

\frac{203-32y}{11} = 25.25

203-32y = 277.75

-32y=74.75
32y=-74.45
y=2.34 (rounded to nearest hundredth)

The price of a plate is $2.34
5 0
3 years ago
Lillian says that 25% of a number will always be less than 75% of any other number.
adoni [48]
False because 25% 100 is more than 75% of 1
7 0
3 years ago
Francis is saving money for a new kindle. she needs to save at least $200 to pay for it and has decided to save $25 per week fro
AveGali [126]

Answer:

8 weeks?

Step-by-step explanation:

25x8=200

or 200/25=8

3 0
3 years ago
Solve the system of equations by graphing. x+y=-9 4x+y=-19
shutvik [7]

For this case we have the following system of equations:

x + y = -9\\4x + y = -19

We multiply the first equation by -4:

-4x-4y = 36

We have the following equivalent system of equations:

-4x-4y = 36\\4x + y = -19

We add the equations:

-4x + 4x-4y + y = 36-19\\-3y = 17\\y = - \frac {17} {3}

We find the value of the variable "x":

x = -9-yx = -9 - (- \frac {17} {3})\\x = -9 + \frac {17} {3}\\x = \frac {-27 + 17} {3}\\x = - \frac {10} {3}

Thus, the solution of the system is:

(x, y): (- \frac {10} {3}, - \frac {17} {3})

See the graphic in the attached image

ANswer:

(x, y): (- \frac {10} {3}, - \frac {17} {3})

See the graphic in the attached image

4 0
4 years ago
I need to find length of MK​
Norma-Jean [14]

Answer:

Use the cosine rule

Step-by-step explanation:

1. Apply formula of c^2 = a^2 + b^2 - 2abcosC

2. Substitute known values in: c^2 = 36 + 4900 - 840cos120

3. Apply algebra and use the calculator

4. Final answer is 73.18 (2 decimal places)

7 0
3 years ago
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