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3 years ago

Find the percent of change. Round to the nearest percent.

Mathematics

1 answer:

katovenus [111]3 years ago

8 0

Answer:

Step-by-step explanation:

You will have to use this formula

$\frac{new value-oldvalue}{oldvalue}$

When substituted in you have $\frac{30-66}{66}$

30-66=-36

-36/66= -0.54 (54 repeating)

Then you have to convert this into a percentage, -54.54(repeating) percent

To the nearest hundredth you would round down to<u> -54.5%</u>.

It is a Decrease because it is negatated.

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En un avión hay 120 personas de las cuales 80 juegan fútbol, y 20 juegan voley. Pero si 10 personas juegan fútbol y voley.

Savatey [412]

120 - 80 (Futbol) - 20 (voley) = 20 - 10 (Futbol y Voley) = 10
10 Personas mas juegan Voley

Pero si estas diciendo Cuantos Juegan Voley en total, eso sera
30 Personas

7 0

3 years ago

Use a(t) = −9.8 meters per second per second as the acceleration due to gravity. (Neglect air resistance.) A canyon is 2100 mete

Umnica [9.8K]

Answer:

$t \approx 20.7\,s$

Step-by-step explanation:

Given that rock experiments a constant acceleration, position function can be obtained by integrating twice:

$v(t) = v_{o} - a\cdot t$

$s(t) = s_{o} + v_{o}\cdot t -\frac{a}{2}\cdot t^{2}$

The initial conditions of the rock are, respectively:

$s_{o} = 2100\,m$

$v_{o} = 0\,\frac{m}{s}$

Position of the rock as a function of time is:

$s(t) = 2100\,m -(4.9\,\frac{m}{s^{2}})\cdot t^{2}$

The time taken for the rock to hit the canyon floor is:

$0\,m = 2100\,m - (4.9\,\frac{m}{s^{2}} )\cdot t^{2}$

$2100\,m = (4.9\,\frac{m}{s^{2}} )\cdot t^{2}$

$t = \sqrt{\frac{2100\,m}{4.9\,\frac{m}{s^{2}} } }$

$t \approx 20.7\,s$

8 0

3 years ago

1. A local pizzeria sold 75 pizzas yesterday.

Natalka [10]

It will be B 12% because you have to round the number

4 0

3 years ago

Valerie and her parents are going to her grandparents' house in Tennessee. It is a 3-hour drive. If they leave at 9:00 am and do

prisoha [69]

Answer: 12:00 pm

Step-by-step explanation:

Valerie and her parents are goig to see her grandparents.

The grandparents leave 3 hours away.

They leave at 9:00 am.

The rime they'll arrive is therefore:

= 9 + 3 hours

= 12:00 pm

3 0

3 years ago

B) Which temperature is warmer, -1 over 4 °C or -0.3 °C? Explain.

larisa86 [58]

Answer: -0.3 degrees Celsius is warmer because -1 over 4 is -0.25 degrees Celsius.

4 0

3 years ago