2 years ago

What is the missing angles

Mathematics

1 answer:

Maksim231197 [3]2 years ago

3 0

Answer:

Step-by-step explanation:

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which expressions represent the model shown on the number line? Choose all correct answers. Answers in image/

Mademuasel [1]

Answer:

i think 9+(-4) and 9-4.

Explanation: i dont really know how to give an explanation. i hope this helps :)

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3 years ago

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vlada-n [284]

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2 years ago

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Which model represents the factors of x^2 + 9x+8?

grandymaker [24]

Answer:

Step-by-step explanation:

x² + 9x+8 = (x+1)(x+8)

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4 years ago

Complete the standard form of the equation of a hyperbola that has vertices at (-10, -15) and (70, -15) and one of its foci at (

Elena L [17]

Answer:

$\frac{(x-30)^{2}}{40^{2}} - \frac{(y+15)^{2}}{3^{2}} = 1$

Step-by-step explanation:

The equation of the horizontal hyperbola in standard form is:

$\frac{(x-k)^{2}}{a^{2}} - \frac{(y-k)^{2}}{b^{2}} = 1$

The position of its center is:

$C(x,y) = \left(\frac{-10 + 70}{2}, -15 \right)$

$C(x, y) = (30,-15)$

The values for c and a are respectively:

$a = 70 - 30$

$a = 40$

$c = 30 - (-11)$

$c = 41$

The remaining variable is computed from the following Pythagorean identity:

$c ^{2} = a^{2} + b^{2}$

$b = \sqrt{c^{2}-a^{2}}$

$b = \sqrt{41^{2}-40^{2}}$

$b = 3$

Now, the equation of the hyperbola is:

$\frac{(x-30)^{2}}{40^{2}} - \frac{(y+15)^{2}}{3^{2}} = 1$

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3 years ago

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One car travels 390 miles in the same amount of time it takes a second car traveling 3 miles per hour slower than

taurus [48]

The first car is traveling at 65 miles per hour and the second car is traveling at 62 miles per hour.
Explanation:
390:x=372:(x-3)
372x=390(x-3)
372x=390x-1170
1170=390x-372x
1170/18=18x/18
x=65

x-3= 65-3=62

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3 years ago