2 years ago

How many inches are in 250 centimeters?

Mathematics

1 answer:

inna [77]2 years ago

3 0

Answer:

98.4252 is the answer :)

Step-by-step explanation:

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40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

dsp73

2x + 4y = 36
3x - 4y = -6
--------------add
5x = 30
x = 6

2x+4y=36
2(6)+4y=36
12 + 4y = 36
4y = 24
y = 6

answer
(6, 6) is a solution of equations
(4,7) is NOT a solution of equations

6 0

2 years ago

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Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)?

Alex Ar [27]

Answer:

$\frac{x^2}{12}-\frac{y^2}{4}=1$

Step-by-step explanation:

Since our foci are located on the x-axis, then our major axis is going to be the horizontal transverse axis of the hyperbola:

Formula for hyperbola with horizontal transverse axis centered at origin

$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$
Directrices -> $x=\pm\frac{a^2}{c}$
Foci -> $(\pm c,0)$ where $a^2+b^2=c^2$
$a>b$

Since we are given our directrices of $x=\pm3$ and foci of $(\pm4,0)$ , then we can set up the directrices equation to solve for $a^2$ :

$x=\pm\frac{a^2}{c}\\ \\\pm3=\pm\frac{a^2}{4}\\ \\12=a^2$

Now we can determine $b^2$ to complete our equation for the hyperbola:

$a^2+b^2=c^2\\\\12+b^2=4^2\\\\12+b^2=16\\\\b^2=4$

Therefore, our equation for our hyperbola is $\frac{x^2}{12}-\frac{y^2}{4}=1$

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1 year ago

The sum of 3 consecutive odd numbers is 183. What is the third number in this sequence?

natta225 [31]

Answer:

Step-by-step explanation:

3x + 6 = 183

3x = 177

x = 59

(x+2) = (59+2) = 61

It is correct on khan academy

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2 years ago

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Anyone knows the answer

vesna_86 [32]

Answer:

it might be 390

Step-by-step explanation:

hope this helps

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2 years ago

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Margaret [11]

Answer: What is the question lol?

Step-by-step explanation:

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2 years ago