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2 years ago

Equations and Inequalities 2x-4=4x-5

Mathematics

2 answers:

ankoles [38]2 years ago

7 0

2x−4=4x−5
(2x−4)+(4−4x)=(4x−5)+(4−4x)
2x−4+4−4x=4x−5+4−4x
2x−4x−4+4=4x−4x−5+4
−2x=−1

Answer: x=1/2

Zina [86]2 years ago

3 0

Much easier way to do it:
2x-4=4x-5
-2x -2x
-4=2x-5
+5 +5
1=2x
2
x= 1/2
Step By Step in words:
Step1: In order to get the x's on both sides, subtract 2x from both sides
Step2 : Now to get the x by itself, do the opposite operation of -5 and add five to both sides
Step 3: Final Step to get the x by itself, do the opposite operation of 2 times x. Divide 2x by 2 and 1 by 2
Which gives you 1/2

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A spinner has three sections. The table shows the results of spinning the arrow on the spinner 80 times.

slega [8]

Answer:

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Step-by-step explanation:

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4 years ago

4) (Assume AR is tangent) Given: AR 12 SR - 7.7 Find: cs (Round to nearest tenth.)

andreev551 [17]

The length of CS is 11.0

Explanation:

Given that the length of the tangent AR is 12

The length of SR is 7.7

To find: The length of CS

The tangent secant theorem states that "if a tangent and a secant are drawn from an external point to a circle, then the square of the measure of the tangent is equal to the product of the measures of the secant’s external part and the entire secant."

Applying the tangent secant theorem, we have,

$AR^2=SR\times RC$

Rewriting the above equation, we get,

$AR^2=SR(SR+SC)$

Substituting the values, we get,

$12^2=7.7(7.7+CS)$

Simplifying, we have,

$144=59.29+7.7CS$

Subtracting both sides by 59.29, we get,

$84.71=7.7CS$

Dividing both sides by 7.7, we have,

$11.0013=CS$

Rounding off to the nearest tenth, we get,

$11.0=CS$

Thus, the length of CS is 11.0

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3 years ago

Approximately how many of the world’s volcanoes occur along the Ring of Fire? 60 to 70 percent 70 to 80 percent 80 to 90 percent

d1i1m1o1n [39]

Answer:

About 70 to 80%

Step-by-step explanation:

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3 years ago

When a number is divided by 5, it has a remainder of 4.

Alexxx [7]

Answer:

Step-by-step explanation:

I plugged in the numbers between 35 and 40 and got this. No problem. :)

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2 years ago

What does the fact the pi is irrational indicate about it'd decimal equivalent

schepotkina [342]

It goes on forever basically, as it can't be expressed as a fraction.

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3 years ago

Equations and Inequalities 2x-4=4x-5​

Equations and Inequalities 2x-4=4x-5