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2 years ago

I DONT WANT HOW TO DO IT JUST THE ANSWER THANKS

Mathematics

1 answer:

posledela2 years ago

6 0

Answer:

After a 90% increase, there is 2,280
After a 55% increase, there is 2015
After a 58% decrease, there is 588

Step-by-step explanation:

Assume the original figures are x.

After a 90% increase, there is 2,280:

x * (1 + 90%) = 2,280

1.9x = 2,280

x = 2,280 / 1.9

= 1,200

After a 58% decrease, there is 588:

x * (1 - 58%) = 588

0.42x = 588

x = 588/0.42

x = 1,400

After a 55% increase, there is 2,015:

x * (1 + 55%) = 2,015

1.55x = 2,015

x = 2,015/1.55

x= 1,300

Order:

1,200 ⇒ 1,300 ⇒ 1,400

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Answer:

$\boxed{x=5},x=-9$

Step-by-step explanation:

To rid the denominators, multiply both sides by $(x-3)(x+1)$ .

We get:

$6(x+1)-12(x-3)=(x-3)(x+1)$

Simplifying, we have:

$6x+6-12x+36=x^2-3x+x-3,\\-6x+42=x^2-2x-3,\\x^2+4x-45=0$

Solving, we get:

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2 years ago

What is m∠CAD?

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Answer:

100

Step-by-step explanation:

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180-80=100

8 0

2 years ago

Read 2 more answers

What is the degree measure of x? A) 67° B) 88° C) 111° D) 134°

Crank

Answer:

Step-by-step explanation:

or, x=88+46(exterior angle is equal to sum of two opposite interior angle)

or, x=134

7 0

2 years ago

A sound wave travels through iron at a rate of 5120\,\dfrac{\text{m}}{\text{s}}5120 s m 5120, start fraction, start text, m, e

klio [65]

Answer:

18432 km/h

Step-by-step explanation:

It is given that a sound wave travels through iron at a rate of 5120 m/s.

We know that

1 km = 1000 m

1 hour = 60 minutes

1 minutes = 60 second

Using these conversions we get

1 m = 0.001 km

1 hour = 3600 second

$5120\text{ m/s }=5120\times 0.001\times 3600\text{ km/h}$

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Therefore, the sound wave travels through iron at a rate of 18432 km/h.

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3 years ago

Dragon drop each expression two correctly classify it as having a positive or negative product

ioda

Step-by-step explanation:

We multiply it to find the product

positive times positive = positive

positive times negative = negative

negative times positive = negative

negative times negative = positive

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Negative and negative is positive , so product is positive

$(-\frac{1}{3})(\frac{1}{3})= -\frac{1}{9}$

Negative and positive is negative , so product is negative

$(\frac{1}{3})(-\frac{1}{3})= -\frac{1}{9}$

positive and negative is negative , so product is negative

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positive and positive is positive , so product is positive

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3 years ago