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
Bess [88]
4 years ago
11

If −20 is the 15th term in an arithmetic sequence with a common difference of −7, what is the first term in the sequence?

Mathematics
1 answer:
Sphinxa [80]4 years ago
8 0
An=A1+(n-1)d
-20=A1+(15-1)x-7
-20=A1+14 x -7
-20=A1-98
+98     +98
-98+98=0
-20+98=78
A1=78
You might be interested in
Which number,when substituted for x,makes the equation 4pie + 8 = 16 true​
Ivahew [28]

Answer:

it’s false

Step-by-step explanation:

4 0
3 years ago
What is the slope of the line parallel to y= 5x+2.<br><br> A. -1/5<br> B. -5<br> C. 5<br> D. 1/5
oee [108]

Answer:

slope = 5

Step-by-step explanation:

Parallel lines have the same slope

Equation: y = mx + b

So, slope m = 5

6 0
3 years ago
Points 50
pogonyaev

-2x + 4.4 = 23.8

Subtract 4.4 from both sides

-2x = 19.4

Divide both sides by-2:

X = -9.7

Answer: C. -9.7

8 0
3 years ago
Read 2 more answers
Find three consecutive integers whose sum in 36
ratelena [41]
ANSWER: 11, 12, 13

3 consecutive integers:
x \\ x + 1 \\ x + 2
"Sum" means Add

x + x + 1 + x + 2 = 36
Combine like-terms
3x + 3 = 36
Solve for X
3x + 3 = 36 \\
Subtract 3 from both sides
3x = 33
Divide by 3 on both sides
x = 11
11 + 1 = 12
11 + 2 = 13
8 0
3 years ago
Peter inherits 15.000 dollars and place money with a bank. The interest rate are 3 percent. How many money will he get after 1ye
NeTakaya
The simplest form of an interest equation is A = P(1+rt)

where A = the total amount of money at the end, P = the principal (or amount of money you started with), r = the rate in percent, and t = the time in years.

In this case, P = 15000, r = 0.03 (because 3% in decimal form is 0.03), and t = 1:

A=P(1+rt)\\A=15000(1+0.03*1)\\A=15000(1+0.03)\\A=15000(1.03)\\A=15450

So, after 1 year he will get $15450 back, making him $450 more.
5 0
4 years ago
Other questions:
  • Jordan wants to find the volume of a cylindrical water storage tank. When we walks around the tank, staying as close to the tank
    7·2 answers
  • Truckers have to travel hundreds of miles to ensure food is transported. How much would 150 gallons of diesel cost March 20th an
    12·1 answer
  • Please answer this correctly
    15·1 answer
  • Please help me ASAP..
    11·1 answer
  • Each square below represents one whole.
    8·1 answer
  • What is the factored form of x^6-9?
    12·2 answers
  • Increase- From 20 miles to 11 miles
    14·1 answer
  • Convert –2y2 + x – 4y + 6 = 0 into standard form.
    10·2 answers
  • When a number is divided by 8, the remainder is 6 and the same number is divided by 7 the remainder is 5 what is the number
    13·1 answer
  • Help show work please.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!