3 years ago

Given an arithmetic sequence with a7=19 and a12=54 find a15

Mathematics

1 answer:

Illusion [34]3 years ago

6 0

C 75 that’s what it is on apex

You might be interested in

Which answer uses the distributive property to write an expression equivalent to 5(32). 5(32) 5+30+2 5(30+2) 5*30*2

melisa1 [442]

Answer:

5(30 + 2)

Step-by-step explanation:

5(32)=160

5(30+2)=160

The rest equal different numbers

5 0

3 years ago

Read 2 more answers

If the angles of a triangle are 10 45 and 23 what is the perimerter of the triangle

djverab [1.8K]

Answer:

No Solutions

Step-by-step explanation:

In a triangle, the sum of the angles has to be 180 degrees. It also is impossible to find the length of sides without at least one side, since the range of lengths is practically infinite. There are no solutions to this problem.

3 0

3 years ago

Determine the equivalent system for the given system of equations.<br> 4x - 5y = 2<br> 3x - y = 8

Black_prince [1.1K]

Solving the system of equations we get solution set (38/11,26/11)

Step-by-step explanation:

We need to solve the system of equations:

$4x - 5y = 2\\3x - y = 8$

Let:

$4x - 5y = 2\,\,\,eq(1)\\3x - y = 8\,\,\,eq(2)$

Multiply equation 2 with 5 and subtract both equations to find value of x:

$4x - 5y = 2\\15x - 5y = 40\\-\,\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-\\--------\\-11x=-38\\x=\frac{-38}{-11}\\x=\frac{38}{11}$

So, value of x = 38/11

Now, finding y:

Putting value of x in equation 2

$3x-y=8\\3(\frac{38}{11})-y=8\\\frac{114}{11}-y=8\\-y=8-\frac{114}{11}\\-y=\frac{8*11-114}{11}\\-y=\frac{88-114}{11}\\-y=\frac{-26}{11}\\y=\frac{26}{11}$

So, value of y = 26/11

So, Solving the system of equations we get solution set (38/11,26/11)

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

6 0

3 years ago

A cafeteria starts with 750 fish sticks for lunch. Each meal they serve uses 6 of the fish sticks, At the end of the lunch there

BigorU [14]

Answer:

The value of N = 118

Step-by-step explanation:

750 = 6n + 42

move all the numbers that don't contain n to the right side

6n = 750 - 42

6n = 708

708 / 6 = 118

n = 118

plug the numbers back in

6 ( 118) = 708

708 = 708

plug the 42 back in

708 + 42 = 750

4 0

3 years ago

Amy took 4 science quizzes. On her first Quiz, she got 21 out of 25 of the Quiz correctly. On the second quiz, she answered 25 o

pav-90 [236]

Answer:

25 out of 27 : she missed 2 points
92%
88%
21 POUT OF 25

HOPE THIS HELPS!

6 0

3 years ago

Read 2 more answers