johnny66666666666666 johnny66666666666666

11-02-2020
Mathematics

contestada

Which is a simplified form of the expression 3a + 7 – a – 7?
A. 2a
B. 4a
C. 2a + 14
D. 4a – 14

Respuesta :

Connera911 Connera911

11-02-2020

Answer:

Choice A.

Step-by-step explanation:

3a + 7 - a - 7 = 3a+7 - a+7 = 3a-a = 2a

Answer Link

Yang100 Yang100

16-02-2020

Answer:

A) 2a

Step-by-step explanation:

3a+7-a-7

3a-a+7-7

2a+7-7

2a

Answer Link

Otras preguntas

Select the correct answer. What can be inferred about Ivan Ilyich based on this excerpt from Leo Tolstoy’s The Death of Ivan Ilyich? He said nothing of this, b

At the beginning of the year one Sam invests $700 at an annual compound interest rate of 5% he makes no deposit to or withdrawals from the account which explici

which spacecraft exploded during flight killing all astronauts?

What term describes the ability of the heart and lungs to supply oxeygn to the muscles for a long period of time! A. Flexibility B.Muscular Strength C. Muscular

American society has passed through most of the stages of social development and is a well-known example of a post-industrial society. What comes next? Discuss

Which of these describes a written agreement between nations? A. a sanction B. an embargo C. a constitution D. a treaty

Which transformations of ƒ(x) = 3x does h(x) = -3x - 7 represent? A. reflection over the y-axis and shifted 7 units down B. reflection over the x-axis and shift

What is the period of `y = 1+ tan((1)/(2)x)`? A. `(1)/(2)` B. π C. 2π D. 1

Lupe: ¿Qué debo hacer con las cajas llenas antes de mudarme? Gloria: _________________ A. ¡Márquelas! B. ¡Abrelas! C. ¡Cárguelas! D. ¡Descárguelas!

Amanda's younger brother tells her that he saw a comet with a long and bright tail move rapidly across the sky. Amanda tells him that it was not a comet. Which