-4/5 + (-3/8) = what

Mathematics

2 answers:

lapo4ka [179]2 years ago

6 0

Answer:

-1.175

Step-by-step explanation:

-4/5 + (-3/8) = -4/5 + (-3/8) = -4 · 8/5 · 8 + (-3) · 5/8 · 5 = -32/40 + (-15/40) = -32 + (-15)/40 = -47/40

The common denominator you can calculate as the least common multiple of the both denominators - LCM(5, 8) = 40. The fraction result cannot be further simplified by cancelling.

In words - minus four fifth plus minus three eighth = minus forty-seven fortieth.

uysha [10]2 years ago

5 0

Answer:-47/40

Step-by-step explanation:

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HELP TIMER Write the equation of a hyperbola centered at the origin with x-intercept +/- 4 and foci of +/-2(squareroot 5)

nikitadnepr [17]

Answer:

$\frac{x2}{a} - \frac{y2}{b2} = 1$

Step-by-step explanation:

A hyperbola is the locus of a point such that its distance from a point to two points (known as foci) is a positive constant.

The standard equation of a hyperbola centered at the origin with transverse on the x axis is given as:

$\frac{X2}{16} - \frac{b}{4} = 1$

The coordinates of the foci is at (±c, 0), where c² = a² + b²

Given that a hyperbola centered at the origin with x-intercepts +/- 4 and foci of +/-2√5. Since the x intercept is ±4, this means that at y = 0, x = 4. Substituting in the standard equation:

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a. = 4

The foci c is at +/-2√5, using c² = a² + b²:

B = 2

Substituting the value of a and b to get the equation of the hyperbola:

$\frac{x2}{a2} - \frac{y2}{b2} = 1$

$\frac{x2}{16} - \frac{b2}{4} = 1$

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3 years ago

PLEASE ANSWER QUICKLY

GaryK [48]

We have that
<span>1/4 x + 2/3 y = 5 ----> multiply by 12 both sides---> 3x+8y=60
1/2 x + 3/2 y = 11---> multiply by 2 both sides----> x+3y=22

therefore

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</span><span>B. 3x + 8y = 60 ; x + 3y = 22</span>

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