3 years ago

The 2th term of The A.P is 7 and 9th term is 28, Find The comon difference and The first term.

Mathematics

1 answer:

Radda [10]3 years ago

8 0

Answer:

difference = 3, first term = 4

Step-by-step explanation:

given, a2 = 7

a9 = 28

wkt, a2 = a + d = 7

a9 = a + 8d = 28

- 7d = - 21

therefore d = 3

and wkt, d = a2 - a

a = 7 - 3 = 4

HOPE THIS HELPS

You might be interested in

How would i graph y=2/3x+1

Ksju [112]

This will be a straight line
the 2/3 is the slope of the graph and the + 1 is the intersection on the y axis
so the line will pass through y = +1 and the slope (rise / run) will be 2/3

3 0

3 years ago

Read 2 more answers

-10 94-76 5 4 3 2 1

lakkis [162]

Answer:

Last one

Step-by-step explanation:

4 0

3 years ago

Write an equation for a line with a slope of 5 and y-inter of -3

Daniel [21]

Answer:

y=5x-3

Step-by-step explanation:

y=mx+b where m=slope and b= y-intercept

6 0

3 years ago

Find the greatest common factor of the following monomials 38n3 8n4

mezya [45]

$38n^{3}=2*19*n*n*n\\8n^{4}=2*2*2*n*n*n*n\\\\GCF=2*n*n*n=2n^{3}$

8 0

3 years ago

Read 2 more answers

Solve for b. ab+c=d B=a+c/d B=a/(c-d) B=(d-c)/a

vekshin1

Answer:

b = (d-c)/a

Step-by-step explanation:

ab+c=d

Subtract c from each side

ab+c-c=d-c

ab = d-c

Divide by a

ab/a = (d-c)/a

b = (d-c)/a

3 0

3 years ago