Which of the following best explains why mars' and venus' surface temperatures vary, despite both planets having atmospheres that contain mostly carbon dioxide?
a) mars surface has red rocks and sand that deflect heat
b) venus surface has high mountains that reflect heat
c) venus has a thick atmosphere that blocks heat from surface
d) mars has a thin atmosphere and cant hold much heat
c) venus has a thick atmosphere that blocks heat from surface
why is venus the hottest planet?
its rich in carbon dioxide
it has an abundance of nitrogen and oxygen gas
its closest to the sun
it has a core, mantle, nd a crust
The correct answer is: it is closest to the sun.
what percent of earths atmosphere does carbon dioxide make up?
Currently, carbon dioxide makes up approximately 0.04% (or 400 parts per million) of Earth's atmosphere.
Charlie is walking to the store, which is 1 mile away. He can walk a pace of two-thirds mile in 16 min. How long will it take to walk to the store?
If Charlie can walk two-thirds of a mile in 16 minutes, we can set up a proportion to find out how long it will take to walk the full mile.
1 mile / x minutes = 2/3 mile / 16 minutes
Cross-multiplying the proportion:
1 mile * 16 minutes = (2/3) mile * x minutes
16 = (2/3) * x
To solve for x, we can multiply both sides of the equation by 3/2:
16 * (3/2) = x
24 = x
Therefore, it will take Charlie 24 minutes to walk the full mile to the store.
Ted bought 3 and one halfs worth of cake. 20 people want the cake. What is the unit per pound of cake per person?
To find the unit per pound of cake per person, we need to divide the total amount of cake (in pounds) by the number of people.
First, we need to convert 3 and one halfs to an improper fraction. 3 and one halfs can be written as 7/2.
Next, we can divide 7/2 (pounds of cake) by 20 (number of people):
(7/2) / 20
To divide fractions, we need to multiply by the reciprocal of the second fraction, so we have:
(7/2) * (1/20)
Multiplying across:
(7 * 1) / (2 * 20) = 7/40
Therefore, the unit per pound of cake per person is 7/40.
Tyler is painting his kitchen. He is able to paint three fourths of the kitchen in 3 hours. How long does it take to paint the whole kitchen?
If Tyler is able to paint three fourths of the kitchen in 3 hours, we can set up a proportion to determine how long it will take to paint the whole kitchen.
Let x represent the time it takes to paint the whole kitchen.
Then, we can set up the following proportion:
(3/4) kitchen / 3 hours = 1 kitchen / x hours
To solve for x, we can cross-multiply:
(3/4) * x = 1 * 3
(3/4) * x = 3
Next, we can multiply both sides of the equation by the reciprocal of (3/4), which is (4/3):
x = (3 * 4) / 3
x = 12 / 3
x = 4
Therefore, it will take Tyler 4 hours to paint the whole kitchen.
Terry is driving to the precinct. In 4 hours, he has driven two thirds of the total distance. What is the total time it takes to get to the precinct ?
If Terry has driven two-thirds of the total distance in 4 hours, we can set up a proportion to find the total time it takes to get to the precinct.
Let x represent the total time it takes to get to the precinct.
Then, we can set up the following proportion:
(2/3) distance / 4 hours = 1 distance / x hours
To solve for x, we can cross-multiply:
(2/3) * x = 1 * 4
(2/3) * x = 4
Next, we can multiply both sides of the equation by the reciprocal of (2/3), which is (3/2):
x = (4 * 3) / 2
x = 12 / 2
x = 6
Therefore, it will take Terry 6 hours to get to the precinct.
Joanne buys five eights of yarn for every 2 yards of crochet. What is the unit rate of yarn to crotchet
To find the unit rate of yarn to crochet, we divide the amount of yarn by the amount of crochet.
Given that Joanne buys five eighths of yarn for every 2 yards of crochet, we can express this as the unit rate:
(5/8) yarn / 2 yards
To simplify the fraction, we can multiply the numerator and denominator by 8:
(5/8) * (8/8) yarn / 2 yards
This gives us:
40/64 yarn / 2 yards
Simplifying the fraction further:
5/8 yarn / 2 yards
Therefore, the unit rate of yarn to crochet is 5/8 yarn per 2 yards.
No its 5/16 to 1
Apologies for the incorrect response. If Joanne buys five eighths (5/8) of yarn for every 2 yards of crochet, the correct unit rate of yarn to crochet is:
(5/8) yarn / 2 yards
To simplify the fraction, we can multiply the numerator and denominator by 2:
(5/8) * (2/2) yarn / 2 yards
This gives us:
10/16 yarn / 2 yards
Simplifying the fraction further:
5/8 yarn / 2 yards
Therefore, the correct unit rate of yarn to crochet is 5/8 yarn per 2 yards.