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svetlana [45]
4 years ago
12

Wright a real world problem with this 2x + 5 > 23

Mathematics
1 answer:
e-lub [12.9K]4 years ago
8 0
Hello! Here is a real world problem that could work:

Jennie currently has $5 in her allowance. For every time she helps cook dinner, she earns $2. Jennie wants to buy an art set that costs $23, before tax. How many times would she have to help with dinner, before she could buy the art set?

How to solve it:

Okay. $5 is the fixed amount (one-time price), and Jennie earns $2 each time she helps cook dinner. First, let's subtract 5 from both sides in order to get 2x > 18. Now, divide each side by 2 to isolate the "x". 18/2 = 9. x > 9.There. Jennie would have to help cook dinner 9 times, before she has $23, but we are looking for greater than, so she would have to help 10 times, before she had enough money to buy the art set.
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Solve the following system of equations graphically on the set of axes below.
Montano1993 [528]

You need to plot each line and see where they intersect.

Line 1: y = x+2

Plot the y-intercept (0,2) because of the +2 in the equation.

From (0,2), count "up 1, right 1" to get a second point, because the slope is 1.

From that new point, repeat the "up 1, right 1" to plot a third point.

Connect the dots to make your line.

Line 2: y = -1/3 x - 2

Repeat the same process, using the the y-intercept and slope for this line.

Then identify where they intersect.

5 0
3 years ago
What is the mathematical expression for the sum of 2 times 2 and 5 times 6
expeople1 [14]
2x2=4, 5x6=30
Not sure if they’re one expression, of so it’s (2x2)+(5x6)=34
7 0
3 years ago
A cylinder has a radius of 8 meters and a height of 4 meters. .
Novay_Z [31]
<h2><u>Solution</u> :-</h2>

Given : Radius of cylinder = 8 m

Height = 4 m

Volume of cylinder = πr²h cu. units

= 22/7 × 8 × 8 × 4 m³

= 804.57 m³ (approx.)

Curved surface area = 2πrh sq. units

= 2 × 22/7 × 8 × 4 m²

= 201.14 m² (approx.)

Total surface area = 2πr(r + h) sq. units

= 2 × 22/7 × 8 (8 + 4) m²

= 2 × 22/7 × 8 × 12 m²

= 603.43 (approx.)

4 0
3 years ago
Write Algebraically: Thirty less than negative fifteen times a number is greater than 54 more than negative three times a number
Yuri [45]

Answer

-15x - 30 > -3x + 54

Explanation

Let's break this sentence down.

Thirty less than means [whatever goes before] minus 30.

Negative fifteen is -15.

Times a number means multiplying by a number. The number will be a variable. And in this case, the variable will be x.

Is greater than means more than.

Negative three is -3.

Times a number means multiplying by a number (in case you forgot or get confused, I wrote it again). That number will be a variable; x. This is the same number.

Now let's write down the equation.

Let's break both sides of the inequality, meaning the left side of 'greater than' and the right side.

The left side says this; "thirty less than negative fifteen times a number."

So let's write this.

So thirty less is minus 30. You are subtracting from "negative fifteen times a number."

Negative fifteen is -15... times a number is -15x.

So the left side of the inequality is -15x - 30.

The right side says this; "54 more than negative three times a number."

54 more than means adding 54 meaning + 54.

And you are adding 54 to "negative three times a number."

Negative three is -3, times a number is -3x.

So the right side of the inequality is -3x + 54.

So the full inequality is -15x - 30 > -3x + 54.

6 0
3 years ago
Two bicycles head toward each other from opposite ends of a freeway 468 kilometers long. If the speed of the first bicycle is 22
Aneli [31]
468/(22+17)=12 hours
Bicycles will meets after 12 hours
6 0
3 years ago
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