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3 years ago

What is the value of x -2 = 2x

Mathematics

2 answers:

Lemur [1.5K]3 years ago

8 0

Divide both sides by negative two
the answer is x = -1

REY [17]3 years ago

8 0

-2=2x
-2x= 2
—- =—
-2 -2
x= -1

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megan hughes deposits 2100 in an account that pays simple interest. when she withdraws her money 11 months later, she receives $

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Answer:

The rate at which the account pay the deposit is 2 %

Step-by-step explanation:

Given as :

The principal amount deposited in account = $2100

The rate of interest = r % simple interest annually

The time period = 11 months = $\frac{11}{12}$ year

The amount received = $2138.50

Now, From Simple Interest method

Simple Interest = $\dfrac{\textrm Principal\times \textrm rate\times \textrm time}{100}$

Or, Interest = $\dfrac{2100\times r\times \frac{11}{12}}{100}$

Or, Interest = $\frac{21\times r\times 11}{12}$

Or, Interest = 19.25 r

Now, Interest = Amount - Principal

So, 19.25 r = $2138.50 - $2100

Or, 19.25 r = $38.5

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I.e r = 2

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3 years ago

The sum of 2 consecutive numbers is 37. Find the numbers.

Naddik [55]

X+1 is the answer for this question

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3 years ago

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18. Find the center, vertices, and foci of the ellipse with equation x squared divided by 225 plus y squared divided by 625 = 1.

KengaRu [80]

Answer:

Center (0,0)

Vertices (-15,0), (15,0), (0,-25), (0,25)

Foce (0,-20), (0,20)

Step-by-step explanation:

You are given the ellipse equation

$\dfrac{x^2}{225}+\dfrac{y^2}{625}=1$

The canonical equation of ellipse with center at (0,0) is

$\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1$

So,

$a^2=225\Rightarrow a=15\\ \\b^2=625\Rightarrow b=25$

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This ellipse is strengthen in y-axis, so

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3 years ago

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What are the options?

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4 years ago

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