MATHEMATICS HIGH SCHOOL

Before there was any life on Earth, which gas was absent from the ancient atmosphere?A.nitrogen
B.ammonia
C.oxygen
D.methane

please answer lol

Answers

Answer 1
Answer: If I am right it should be D because pigs make methane

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What is the slope of the line that passes through the points (−2,7) and (2,−5)? Write your answer in simplest form.

Answers

Answer:

-3

Step-by-step explanation:

Slope = Rise/Run

We can find the amount between 7 and -5 as 12, and -2 and 2 as 4.

Then we can do rise/run and 12/4

Which would divide into 3.

ANd because we can see the x increases as the y decreases, we can find that it's a negative slope.

-3

Tea from Britain costs $2.50 to produce. It is sold in America at a price of $3.50 (to make a profit of $1.00) Tea in America costs $3.00 to produce. It is sold at a price of $4.00 (to make a profit of $1.00) If there is a 50% Tariff on tea, who would you buy your tea from?

Answers

Answer:

I would buy my tea from Britain.

Write a power that has a value greater than 140 and less than 145.

Answers

Answer:

12^(2)

Step-by-step explanation:

To find: a power that has a value greater than 140 and less than 145

Solution:

Take x=12^(2)

Here,

12^(2)=144 and 140<144<145

That is 140<x<145

Therefore,

12^(2) has a value greater than 140 and less than 145.

Jarred sells DVDs. His inventory shows that he has a total of 3,500 DVDs. He has 2,342 more contemporary titles than classic titles. Let x represent the number of contemporary titles and y represent the number of classic titles. The system of equations models the given information for both types of DVDs.x + y = 3,500

x – y = 2,342

Solve the system of equations. How many contemporary titles does Jarred have?

1,158
1,737
2,342
2,921

Answers

There are 2,921 contemporary titles does Jarred have.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

His inventory shows that he has a total of 3,500 DVDs.

He has 2,342 more contemporary titles than classic titles.

Let number of contemporary titles = x

Number of classic titles = y

The system of equations are;

⇒ x + y = 3,500

⇒ x - y = 2,342

Solve the system of equations as;

Add equation (i) and (ii) , we get;

2x = 3,500 + 2,342

2x = 5,842

Divide by 2, we get;

x = 5,842 / 2

x = 2,921

Thus, There are 2,921 contemporary titles does Jarred have.

Learn more about the system of equation visit:

brainly.com/question/26111659

#SPJ2
2921 would be the answer on edge.

What is the solution to the system of equations gaphed below
y=-x+3
y=x-3

Answers

The answer is (x,y)= (3,0)
The answer will be (0,3)

50% of what number is 90?

Answers

The answer would be 180 because if 90 is 50% and that's half of 100 then the other 50% would also be 90 and added together that is 180
to get to 100 percent you have to double the number so when you double 90 you get 180

90+90=180.
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