1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Debora [2.8K]
3 years ago
8

What is the first four terms in the multiplication or ,geometric , pattern in which the first term is 2 and then each term is mu

ltiplied by 7
Mathematics
1 answer:
sesenic [268]3 years ago
6 0

Answer:

the sequence is 2, 14, 98, 686.

Step-by-step explanation:

As we know in any geometric sequence the terms are denoted by

T_{n}=a(r)^{n-1}

We have to find the first four terms of geometric sequence which has first term a = 2 and common ratio of the terms r = 7

number of terms = 4

The sequence from the formula will be

2, 2.7, 2.(7)^{2},2.(7)^{3}

or the sequence is 2, 14, 98, 686.

You might be interested in
PLEASE HELP I HAVE 3 MINS LEFT
lyudmila [28]
I believe it is 5 or 10
5 0
3 years ago
sin alpha = 7/25, alpha lies in quadrant ii, and cos beta = 2/5, beta lies in quadrant i. find cos(alpha-beta).
Ilia_Sergeevich [38]

Answer:

Therefore \cos(\alpha-\beta)=\frac{48+7\sqrt{25}}{125}

Step-by-step explanation:

Given values are

\sin \alpha=\frac{7}{25}

\cos \beta=\frac{2}{5}

\sin^2x+\cos^2=1

\cos \alpha=\sqrt{1-\sin^2\alpha}

\cos \alpha=\sqrt{1-(\frac{7}{25})^2}

\cos \alpha=\sqrt{1-\frac{49}{625}}

\cos \alpha=\sqrt{\frac{576}{625}}

\cos \alpha=\frac{24}{25}

\sin \beta=\sqrt{1-\cos^2\beta}

\sin \beta=\sqrt{1-(\frac{2}{5})^2}

\sin \beta=\sqrt{1-\frac{4}{25}}

\sin \beta=\frac{\sqrt{21}}{5}

\cos(\alpha-\beta)=\cos\alpha\cos\beta+\sin\alpha\sin\beta

\cos(\alpha-\beta)=\frac{24}{25}\times\frac{2}{5}+\frac{7}{25}\times\frac{\sqrt{21}}{5}

\cos(\alpha-\beta)=\frac{48+7\sqrt{25}}{125}

7 0
3 years ago
Water_____at 32 degrees F.<br><br> (Fill in the blank)
Arturiano [62]

freezing point. 32 or below is freezing point.

7 0
3 years ago
Read 2 more answers
How many centimeters(cm) of rain fell in this region during the course of the year​
yuradex [85]

Answer:

January through

March

Step-by-step explanation:

7 0
3 years ago
1 meter is times as long as 1 decimeter
anzhelika [568]

Answer:

10

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • What does |a|=|b| mean?
    15·2 answers
  • I need to know where to plot the points on the graph <br><br>30 points
    10·1 answer
  • The polynomial given below has _____ root(s).2x2 + 2x + 4
    7·2 answers
  • With the lengths of two sides of a triangle and the measure of the angle between the two sides, is it possible to construct the
    6·1 answer
  • Express 17.1 6 as a mixed number in lowest terms
    11·1 answer
  • 1 4/5, 1/2, -3 7/8, -7/9, -3/5 order the numbers from least to greatest
    5·2 answers
  • Tomi's band has won twice as many awards as All's band. Write an algebralc expression for the number of awards Tomi's band has w
    13·1 answer
  • In how many ways can a person read 3 different books from a collection of 7 books during a one week vacation
    9·1 answer
  • The formula for the time it takes to travel a distance of d at an average speed v is (d)/(v)
    10·1 answer
  • What is the slope of a line parallel to slope 2 and Perpendicular to slope 2?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!