3 years ago

How to write this in number form 4 less than the product of 6 and a number

Mathematics

1 answer:

saul85 [17]3 years ago

3 0

Answer:

6x - 4

Step-by-step explanation:

The problem is asking for 4 less than a number times 6. Set this number equal to x, leaving us with 4 less than 6x, or 6x - 4.

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I dont know the answer to this 29.2 km = _____ dam

Solnce55 [7]

Answer:

$2,920\ dam$

Step-by-step explanation:

we know that

1 Kilometer (km) is equal to 100 dekameters (dam)

$1\ km=100\ dam$

To convert km to dam , multiply by 100

we have

$29.2\ km$

Convert to dam

$29.2\ km=29.2(100)=2,920\ dam$

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3 years ago

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Black_prince [1.1K]

Answer:

It would be A, C, and D.

Step-by-step explanation:

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3 years ago

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

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3 years ago

A hot air ballon descends at a rate of 320 feet per minute for 3 minutes. Use integers to calculate and represent the balloon's

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You multiply 320 by 3 and the answer is 960

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The formula of the circumference is C=

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4 years ago

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