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3 years ago

9

The perimeter of a rectangle is 30 cm the length is 9 cm long longer than the width what are the length and width of the rectang

le

1 answer:

adell [148]3 years ago

8 0

Step-by-step explanation:

perimeter = 2(length) + 2(width)

let x represent the width of the rectangle

$30 = 2x + 2(x + 9)$

$30 = 4x + 18$

$12 = 4x$

$x = 3$

therefore width = 3 cm

length = 3+9

= 12cm

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Cuántos metros es más alto el pico de Orizaba que el Popocatépetl

alexira [117]

How many meters is the peak of Orizaba higher than Popocatepetl?

Answer:

Popocatépetl: 5426 m and 17,802 ft

Orizaba: 18,491 meters

Step-by-step explanation:

How long does it take to climb Pico de Orizaba?

about 15 hours

Most ascents of Pico de Orizaba will take about 15 hours from the mountain hut to the summit and back. You will usually wake up and begin climbing by 1 a.m. to reach the summit by 10 a.m. and return to the starting mountain hut by 4 p.m.

How long does it take to climb Popocatépetl?

4 hours

What is Popocatépetl?

Popocatepetl is currently a very active volcano with forested slopes and a large crater. It is the second-highest peak in Mexico, behind Pico de Orizaba (5636 meters/18,491 feet), and is generally considered to be the fifth highest mountain in North American. The name Popocatepetl is Aztec for Smoking Mountain; it is often shortened to Popo. Popo and its neighboring volcano Iztaccihuatl (17,343 ft) dominate the sky east of Amecameca. They are located less than 80 km from Mexico City and are separated from each other by ten miles of high grounds referred to as Paso de Cortes. I had the pleasure of climbing the mountain on December 18, 1992, when the volcano was still considered dormant. This is no longer the case. In the 20th century, Popo had an eruption in 1947, but on December 21, 1994, it awakened from dormancy, spewing gas and ash, which was carried by the wind as far as Puebla, 25 miles east. Surrounding towns were evacuated, and scientists have since been closely monitoring Popo for signs of a possible eruption. Ever since then the mountain has been closed to climbing. In December 2000, the mountain came alive with the biggest eruption in 1200 years and with the biggest display of "fireworks" (lava shot ~400 meters/1300 feet into the air) that has been. 30,000 people were evacuated. The first documented ascent of Popocatepetl was by the Tecuanipas tribe in 1289, but this ascent has been disputed by historians. The first Spanish ascent of the mountain was an expedition led by Diego de Ordaz in 1519. Emperor Montezuma sent ten warriors to climb the mountain sometime between 1502 and 1519. Only two of these warriors survived the climb.

5 0

3 years ago

Precizează felul atributelor din enunțurile de mai jos, analizând părțile de vorbire prin care se exprimă.

Llana [10]

Answer:

Step-by-step explanation:

Dorința de a mă juca este mare.

de a (mă) juca - atribut verbal (care dorință?) exprimat prin verb la modul infinitiv;

Avea aerul a nu înțelege.

a nu înțelege - atribut verbal (ce fel de aer?) exprimat prin verb la modul infinitiv;

El dovedise un curaj de invidiat.

de invidiat - atribut verbal (ce fel de curaj?), exprimat prin verb la modul supin.

Casele aveau coșuri fumegânde.

fumegânde - atribut adjectival, exprimat prin verb la gerunziu acordat (cu valoare adjectivală)

Nevoia de a o lua din de a o lua dinloc din cauza frigului era mare.

de a o lua din loc - atribut verbal, exprimat prin locuțiune verbală la modul infinitiv;

A lipi bileţele pe un frigider este un mijloc de adus aminte.

de adus aminte - atribut verbal, exprimat prin locuțiune verbală la modul supin;

Fata ținând nasul pe sus a alunecat pe gheață.

ținând nasul pe sus - atribut verbal, exprimat prin locuțiune verbală la modul gerunziu (neacordat);

Blocul de acolo este înalt.

de acolo - atribut adverbial, exprimat prin adverb de loc;

Trezitul devreme nu-mi place.

devreme - atribut adverbial, exprimat prin adverb de timp;

Mersul de colo până colo l-a obosit.

de colo până colo - atribut adverbial exprimat prin locuțiune adverbială;

E o vreme brrr!

brrr - atribut interjecțional, exprimat prin interjecție.

8 0

3 years ago

What is the equation of a circle with center (9,-7) and radius 2?

kirza4 [7]

Answer:

B. (x-9)^2 + (y + 7)^2 = 4

Step-by-step explanation:

The standard form of a circle is (x-h)^2 + (y-k)^2 = r^2. Hopefully you can memorize that, because it's very helpful in these problems!

(h,k) is our center, and r is our radius, so plug those values into the standard form:

(x - 9)^2 + (y + 7)2 = 2^2

2^2 = 4, so

<u>B. (x - 9)^2 + (y + 7)2 = 4 is our answer!</u>

3 0

3 years ago

The graph of a linear function intersects with the x axis at a point with an abscissa of 4 and with the y axis at a point with a

goldenfox [79]

We know that

points are
x intercept
A (4,0)

y intercept
B (0,11)

step 1
find the equation of a line
m=(y2-y1)/(x2-x1)--------> m=(11-0)/(0-4)------> m=-11/4

with m and the point B (0,11)
y-y1=m*(x-x1)y-11=(-11/4)*(x-0)---------> y=-(11/4)x+11

the answer is
the formula of the function is y=-(11/4)x+11

see the attached figure

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3 years ago

A scientist removed a sample of 39.1 grams of a chemical from a container. The sample was 5 3/4 grams less than 3/10 of the tota

Oksanka [162]

The first thing we must do for this case is to define variables:

x: the total mass of the chemical in the container

y: a sample of a chemical from a container

We have the following equation:

y = (3/10) x - 5 3/4

Then, for y = 39.1 we have:

39.1 = (3/10) x - 5 3/4

Clearing x:

(3/10) x = 39.1 + 5 3/4

(3/10) x = 44.85

x = (10/3) * (44.85)

x = 149.5 grams

Answer:

the total mass in grams of the chemical in the container before the scientist removed the sample of 39.1 grams was:

x = 149.5 grams.

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3 years ago