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Amiraneli [1.4K]
2 years ago
12

Previous 2 Next Linear Equations: Mastery Test 2. Type the correct answer in the box. Use numerals instead of words. What value

of x makes this equation true? -6x + 3 = 45 Reset Next Eden its reserved K KE
- 6x + 3 = 45
​
Mathematics
1 answer:
Dmitry_Shevchenko [17]2 years ago
7 0

The value of the unknown variable "x" given that -6x + 3= 45 is -7

Equations are expressions separated by an equal sign.  They can contain one or more variables.

The equation given in question is a linear equation containing one unknown variable "x".

The equation is expressed as -6x + 3 = 45

To get the value of x, we will follow the steps below:

Step 1: Subtract 3 from both sides of the equation

-6x + 3 - 3 = 45 - 3

-6x = 42

Step 2: Divide both sides of the expression by -6

-6x/-6 =42/-6

x = -7

This shows that the value of the unknown variable "x" is -7.

Learn more here: brainly.com/question/2159099

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The heights (in cm) and arm spans (in cm) of 31 students were measured. The association between x(height) and y(arm span) is sho
abruzzese [7]

Answer:

27.385 cm longer would we expect Mike's arm span to be than George's.

Step-by-step explanation:

We have to find how many centimeters longer would we expect Mike's arm span to be than George's using the equation:

y= 4.5x + 0.977 x

where y= arm span

and x= height

Given:

Mike's height=x = 175 cm

so Mike's arm span= y= 4.5 x + 0.977 x

                                    = 4.5* (175) + 0.977* (175)

                                    = 787.5 + 170.975

                                    = 958.475 cm

George's height = x = 170 cm

so George's arm span= y= 4.5 x + 0.977 x

                                    = 4.5* (170) + 0.977* (170)

                                    = 765 + 166.09

                                    = 931.09 cm

Mike's arm span longer than George's = Mike's arm span - George's arm span

                                                                 = 958.475 - 931.09

                                                                 = 27.385 cm.

8 0
3 years ago
48/50 - 20/25 please Answer this ASAP please
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Answer:

0.16

Step-by-step explanation:

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2 years ago
The lenght of a rectangle is 4 cm less than three times the width. the perimeter is 64 cm
dybincka [34]
Let the width be x cm.
Then length=3x-4 cm.
Its perimeter is 64 cm.
We know that perimeter of a rectangle= 2(length+width)
So,
2(3x-4+x)=64
6x-8+2x=64
6x+2x=64+8
8x=72
x=9
Therefore,
length=(3×9-4)cm=(27-4)cm=23 cm.
Width=9 cm.
5 0
3 years ago
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aleksandrvk [35]

quadratic equations can be soled by 3 methods

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If the area of a trapezoid is 234 square units what is the value of x
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h=9
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6 0
3 years ago
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