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3 years ago

Solve the inequality -1>-2(x-4)-5(4x-7)

Mathematics

2 answers:

Vadim26 [7]3 years ago

5 0

Answer:

x>2

Step-by-step explanation:

-1>-2(x-4)-5(4x-7)

opening brackets

-1>-2x+8-20x+35

-1>-2x-20x+8+35

-1>-22x+43

-1-43>-22x

-44>-22x

by canceling the sign of minus we change the sign of inequality

44<22x

x>2

i hope it will help you

g100num [7]3 years ago

4 0

Answer:

Inequality Form - x>2

Interval Notation - (2,∞ )

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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I NEED HELP PLEASE!!!

Levart [38]

It looks like I could substitute the x=2y-1. Into 2x+y=3
2(2y-1)+y=3
4y-2+y=3
5y=5
y=1
x=2(1)-1
x=1
 (1,1)
CHECK
2x+y=3
2(1)+(1)=3
2+1=3
3=3
Left hand side=Right hand side
Check other equation
x=2y-1
1=2(1)-1
1=1
Therefore the solution is (1,1). Since the left hand side= right hand side in each equation

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3 years ago

17. The perimeter of each face of a Rubik's cube is

romanna [79]

A Rubik's cube is, well, a cube.

That means that each if its faces is a square, a quadrilateral with four right angles and four sides if the same length.

If the length of one side is x,

4x=22.2

x=5.55 centimeters.

Hope this helps!

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trombonebookworm)

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3 years ago

Jason's business computers need servicing. The expression 81x + 108 represents a contractor's total charges in dollars for fixin

Zielflug [23.3K]

Answer:

The Jason's company charges more than the contractor's company.

Step-by-step explanation:

There are two expressions given for total charges for two companies as 81 x+108 and 103 x+64.

Here x represents number of hours.

We are asked to find difference in total charges if that takes 45 minutes.

45 minutes = $\frac{3}{4}$ hours.

Plug in this value for x.

81x+108 = $81*\frac{3}{4} +108$

Simplify it

60.75 +108 =168.75

Now, for 103x+64 = $103 *\frac{3}{4} +64$

Simplify it,

77.25+64=141.25

If we see the total charge for both companies for 45 minutes, the Jason's business computers charges more than contractor's company.

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3 years ago

In a sample of students, 12 out of 24 students in a class wanted a sandwich for lunch. Using the data from the sample, predict h

natka813 [3]

Answer:

200

Step-by-step explanation:

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3 years ago

Calculate the surface area of a solid box in the shape of a cube with side length 11cm.ILL MARK U BRAINEST!!!

SCORPION-xisa [38]

Answer:

11 x 11 = 121 121 x 6 = 726 cm

Step-by-step explanation:

Hope this helps

6 0

3 years ago