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3 years ago

2x+x² x= -3..................

Mathematics

2 answers:

LuckyWell [14K]3 years ago

6 0

Answer:

x= -1

Step-by-step explanation:

It took me a couple minutes to figure out this answer, but all I can say is when simplifying equations, organize the numbers.

sammy [17]3 years ago

5 0

Answer:

Step-by-step explanation:

Brainliest pls.

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The equation for line m is y = - - x + 5. Which equation represents a line perpendicular to line m?

Natalka [10]

Answer:

-y-x+5=0

Step-by-step explanation:

because if a line is perpendicular then

eqn bx-ay+.k..=0

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3 years ago

You put $1500 into an account earning 7% annual interest compounded continuously. How long will it be until you have $2000 in yo

Igoryamba

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3 years ago

the diagram shows a 5cm x 5cm x 5cm cube calculate the length of the diagonal AB give your answer correct to 1 decimal place

Lynna [10]

Answer:

√3 * 5 = 5√3 cm

Step-by-step explanation:

→ ABCDEFGH is a cube.

→ CF = Diagonal of cube.

→ CH = Diagonal of Base Face BCDH.

→ Let the side of Each cube = a.

Than,

in Right ∆CFH, By Pythagoras Theoram, we have,

→ CH² + FH² = CF² --------- Equation (1)

and, Similarly, in Right ∆CDH ,

→ CD² + DH² = CH² ------- Equation (2).

Putting Value of Equation (2) in Equation (1), we get,

→ (CD² + DH²) + FH² = CF²

→ a² + a² + a² = CF²

→ CF² = 3a²

→ CF = √3a .

Hence, we can say That Diagonal of a cube is √3 times of its sides.

__________________

Given:-

Side of cube = 5cm.

So,

→ Diagonal of cube = √3 * 5 = 5√3 cm. (Ans.)

4 0

3 years ago

In 1983, a year-long newspaper subscription cost $12.75. Today, a year-long newspaper subscription costs $28.50. If the CPI is 1

disa [49]

The CPI or the Customer Price Index is calculated through the equation,
CPI = (price at a certain year/ price at the base year) x 100
If our base year is 1983, the price of a year-long newspaper subscription will cost,
193 = (price at a certain year / 12.75) x 100
price at a certain year = $24.6075
Thus, the current price which is $28.50 is slightly higher than the expected price based on the given CPI.

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4 years ago

Find the constant of variation k for the direct variation.

Svet_ta [14]

Answer:

The correct option is D.

Step-by-step explanation:

It is given that x is directly proportional to f(x) and constant of variation is k.

$f(x)\propto x$