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SCORPION-xisa [38]

3 years ago

12

Train a can travel a distance of 500 miles in 8 hours assuming the train moves a a constant rate write the linear equation that

represents the situation

1 answer:

Bogdan [553]3 years ago

4 0

Answer:

Step-by-step explanation:nbfd

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a recipe for soup calls for 4 3/4 cup of water 1/2 teaspoon of salt, and 2 1/2 cups of mixed vegetables. if the recipe yields tw

tekilochka [14]

All we have to do is multiply by two

4 3/4 * 2 = 9 1/2
1/2 * 2 = 1
2 1/2 * 2 = 5

7 0

2 years ago

Which of these systems of linear equations has no solution? A. 2 x + 8 y = 15. 4 x + 16 y = 30. 2 x minus B. y = 18. 4 x + 2 y =

Ilya [14]

Answer:

D. 4 x minus 3 y = 16. 8 x minus 6 y = 34

Step-by-step explanation:

A. 2 x + 8 y = 15. 4 x + 16 y = 30.

Multiply the first equation by 2

4x+16y = 30 This is identical to the second equation so there are infinite solutions

B. 2 x - y = 18. 4 x + 2 y = 38.

Multiply the first equation by 2

4x -2y = 36. Add to the second equation 8x = 74 so there is one solution

C. 4 x + 7 y = 17. 8 x minus 14 y = 36.

Multiply the first equation by 2

8x +14y = 34 Add this to the second equation 16x = 70 There is one solution

D. 4 x minus 3 y = 16. 8 x minus 6 y = 34.

Multiply the first equation by 2

8x - 6y = 32 Subtract this from the second equation 8x - 6y = 34

0 = 2

This is never true so there is no solution

7 0

3 years ago

When a sound wave uncounters a barrier, what happens?

motikmotik

A. The sound reflects I believe is the answer

8 0

3 years ago

Why did the United States enter world war 1 please help please I beg you

ad-work [718]

Answer:

this may help answer and choose 3 answers

Step-by-step explanation:

The U.S. entered World War I because Germany embarked on a deadly gamble. Germany sank many American merchant ships around the British Isles which prompted the American entry into the war. Rochester political scientist Hein Goemans answers the question why Germany was willing to risk American entry into the war. Woodrow Wilson did not want war.

5 0

3 years ago

Why is the answer A ?<br>why can't D work?

attashe74 [19]

The negative in a = -2 for answer A represents a reflection over the x-axis.
What does the cosine graph usually look like?.....It goes through point (0,1) and decreases.
The graph shown goes through point (0,-2). Since there are no vertical or horizontal shifts, the graph has an amplitude of 2 and reflects over the x-axis.

a=2 for answer D does not represent the reflection over the x-axis.

7 0

2 years ago