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3 years ago

5x + 20 = -5x What does "x" equal?

Mathematics

2 answers:

True [87]3 years ago

7 0

mestny [16]3 years ago

6 0

5x+20=-5x x would represent 2 because if you replace x with two here is what you get
5(2)+ 20=-5(2)
10+20=-10
Which is equivalent to the first expression

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Cloud [144]

Answer:

True

Step-by-step explanation:

For example:

HCF of 2 and 3 is 1

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3 years ago

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The slope on a graph

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3 years ago

Rationalise the denominator.

grin007 [14]

Let's see what to do buddy...

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To do this, we have to multiply the face and denominator of the fraction by the denominator conjunction, which is :

$(5 -\sqrt{2})$

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Reminder :

$(a + b)(a - b) = {a}^{2} - {b}^{2} \\$

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So we have :

$\frac{1}{ 5-\sqrt{2} } \times \frac{ 5+\sqrt{2} }{ 5 +\sqrt{2} } = \frac{1 \times ( 5 +\sqrt{2}) }{(5- \sqrt{2} )( 5 +\sqrt{2}) } = \\$

The other is in the photo.

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And we're done.

Thanks for watching buddy good luck.

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3 years ago

Drag numbers to complete the table for missing values of x, x2, x3

tresset_1 [31]

Top row is x= 10, x^2 =100, x^3 = 1000
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4 years ago

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Suppose that w and t vary inversely and that t = 5/12

Svetlanka [38]

Answer:

Option B. t=5/3w ;1/3

Step-by-step explanation:

We are told that $w$ varies Inversely with $t$ thus generally speaking $w$ ∝ $\frac{1}{t}$ since they are inverted, <u>otherwise</u> if they were proportionally varied then $w$ ∝ $t$ . This means that there is a constant value ( $a$ ) for which $w$ is inversely proportional to $t$ and can be mathematically expressed as:

$w=\frac{a}{t}$ Eqn. (1)

Now since we are given the values of $w=4$ and $t=\frac{5}{12}$ , we can plug them in Eqn. (1) and find our constant of proportionality $a$ as follow:

$w=\frac{a}{t}\\ \\a=wt\\\\a=(4)(\frac{5}{12} )\\\\a=\frac{5}{3}$

Now that we have our constant we can find the new $t$ value for the second value of $w=5$ as follow:

$w=\frac{a}{t} \\\\t=\frac{a}{w}\\ \\t=\frac{\frac{5}{3} }{5}\\\\t=\frac{5}{15}\\ \\t=\frac{1}{3}\\$

Therefore based on the options give, we can see that Option B. is correct since

$t=\frac{5}{3w}$ and for $w=5$ , then $t=\frac{1}{3}$

8 0

3 years ago