3 years ago

What is the ninth term in the sequence an=21+5n

Mathematics

1 answer:

Anni [7]3 years ago

4 0

Answer:66

Step-by-step explanation:

an=21+5n

ninth term is a9

a9=21+5x9

a9=21+45

a9=66

You might be interested in

Micaela and Chelsea each improved their yards by planting rose bushes and ivy. They bought their supplies

kifflom [539]

Answer:

Step-by-step explanation:

Let:

i: the cost of one pot of ivy.

r: the cost of one rose bush

$5r+3i=58 ......(1)\\5r+10i=100.......(2)\\\\$

From eq(1) we can get:

$r=\frac{58-3i}{5} \\$

Substitute eq(1) in eq(2):

$5(\frac{58-3i}{5})+10i=100\\58-3i+10i=100\\7i=100-58\\i=\frac{42}{7} =6\\$

$r=\frac{58-3i}{5} \\r=\frac{58-3(6)}{5} \\\\r=8$

5 0

1 year ago

Read 2 more answers

What is 2,684,735 rounded to the nearest hounded thousand

Ivanshal [37]

2,684,735 = 2,700,000 to the nearest hundred thousand

4 0

3 years ago

Read 2 more answers

Cassandra has $2000 dollars in a bank account that she uses to make automatic $900.01 mortgage

Klio2033 [76]

Answer:

Step-by-step explanation:

it's CASSANDRA business so she solve it herself

4 0

3 years ago

Read 2 more answers

please help, this is due today and i dont have much time, ill give brainliest for the first correct answer. thanks! :3 i only ne

masha68 [24]

Answer:

graph b

Step-by-step explanation:

any graph with a filled in circle is automatically out and it has to be b cause its less than x

7 0

2 years ago

Read 2 more answers

HELPPP Paul is making two ceramic plates in his pottery class. One plate has a 20-centimeter diameter and a 62.8-centimeter circ

nikitadnepr [17]

Answer:

It’s 2+2=x 3x3=18 that’s the answer

Step-by-step explanation:

5 0

3 years ago