debrarayas debrarayas

10-09-2018
Mathematics

contestada

The first two terms of an arithmetic sequence are a1 = 2 and a2 = 4. What is a10,the tenth term?A. 19 B. 10 C. 18 D. 20

Respuesta :

musiclover10045 musiclover10045

10-09-2018

Finde the difference between each one:

d = A2 - a1 = 4-2 = 2

sequence formula:

an = a1 + (n-1) *d

a10 = 2 + (10-1) * 2

a10 = 2+9 *2

a10 = 2+18

a10 = 20

The answer is D.

Answer Link

KennyStudys KennyStudys

10-09-2018

Since the difference between a1-a2 is 2, just multiply it 2x10 which is D

Answer Link

Otras preguntas

2. This group mastered the art of weaving. O Mayan O Iroquois Pueblo O Navajo

Angles EBI and BCJ are line Al to GJ by the directed line segment Angles ABC and BCJ are Their congruence can be proven by ** ---- Their congruence can be prove

for the gas phase decomposition of ethyl chloroformate, the rate constant has been determined at several temperatures. when in is plotted against the reciprocal

Шість тичинок є в квітках: а) дикої редьки; б) малини; в) помідора;г) капусти;д) лілії.

you currently make a part on old equipment at a cost of $50,000 per year and what does the company save for the year by selecting the low-cost option at an annu

ben is planning a ground-breaking ceremony for the company's new headquarters in charlotte, north carolina. he has a limited budget. if he rents air-conditioned

How does seeing Mr. and Mrs. Black help Mitchell understand Jimmy T and the tension Jimmy T must live with?

Un barco sale del puerto A y viaja 61 km hacia el oeste hasta el punto C. Luego, cambia el curso 36° hacia el norte. Viaja 88 km en esa dirección hasta que lleg

5 protons would be about 6 neutrons would be about 3 electrons and 3 protons would have a total mass of about 6 neutrons and 5 protons would have a total mass o

A lifeguard spots a swimmer in the lake at an angle of depression of 32°. He spots a sailboat, further out, at an angle of depression of 13°. If the lifeguard i