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
postnew [5]
3 years ago
11

Find the first term of a sequence x+1,2x-18,2x-1,if this sequence is an arithmetic progression​

Mathematics
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

a₁ = 37

Step-by-step explanation:

In an arithmetic progression the common difference d is

d = a₂ - a₁ = a₃ - a₂ , that is

2x - 18 - (x + 1) = 2x - 1 - (2x - 18) ← distribute and simplify both sides

2x - 18 - x - 1 = 2x - 1 - 2x + 18

x - 19 = 17 ( add 19 to both sides )

x = 36

Thus

a₁ = x + 1 = 36 + 1 = 37

You might be interested in
A coin will be tossed three times, and each toss will be recorded as heads (H) or tails (7). Give the sample space describing al
Fynjy0 [20]

Answer:

A). {HHH, HHT, HTH, THH, TTH,THT,HTT,TTT}

(B). {HHH, HHT, THH, THT}

Step-by-step explanation:

Given:

A coin is to be tossed three times and each tossed will be recorded as Head(H) and Tails(T).

To Find:

(a). Sample Space

(b). Event that the second toss is Heads

Explanation:

(A). Sample Space: When a coin is tossed 3 times

{HHH, HHT, HTH, THH, TTH,THT,HTT,TTT}

(B). Event that second toss is Head

{HHH, HHT, THH, THT}

6 0
3 years ago
Ahhh hi pls help <br> f(x)=-2x^2+3
nikklg [1K]

Answer:

Step-by-step explanation:

F(x) is another name for y

If you make a table of values, you can plot the coordinates of this quadratic equation.

When "x" is 0, y is 3

7 0
3 years ago
A spider ate 25% more bugs this month then last month the spider ate 8 bugs last month
Ierofanga [76]

In this month spider ate 10 bugs.

Step-by-step explanation:

Given,

The spider ate 25% more bugs than last month.

It ate 8 bugs in last month.

To find the number of bugs it ate this month.

<u>Solution</u>

It ate more bugs = 8×25%

=8×\frac{25}{100} = 2

In this month it ate = 8+2 = 10 bugs.

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST AND CORRECT
Daniel [21]

Answer:

The answer is -2.5.

Step-by-step explanation:

This is because the distance between -9 and 4 is 14 units. And the two numbers in the middle are -3 and -2, so -3 plus -2 equal -5 and -5 divided by 2 equals -2.5.

7 0
3 years ago
Help with trig homework
zhannawk [14.2K]

Answer:

225 m

Step-by-step explanation:

Since we know they are similar triangles

8                15

---------- = -----------  

120              bridge


Using cross products

8 * bridge = 15* 120

8* bridge = 1800

Divide each side by 8

8/8* bridge = 1800/8

bridge = 225

8 0
3 years ago
Read 2 more answers
Other questions:
  • What happens if the red lines are NOT parallel. Which angle types are still congruent?(please help)
    13·1 answer
  • Can someone solve this for me and give me the steps thx
    12·1 answer
  • A wall in marcus room is 8 2/5 feet high as 16 2/3 feet long. If he paints 1/2 the wall blue how many square feet will be blue
    8·1 answer
  • What is the product of -4x2(6x2y)
    8·1 answer
  • F(x) = 2x( 11x^4 + 12/x+1) what is f’(x)
    15·1 answer
  • Erik buys 2.5 pounds of cashews. If each pound of cashews costs $7.70, how much will he pay for the cashews?
    13·2 answers
  • What is the sum of 4.5 + 3.2 + (-7.5)
    5·1 answer
  • 8x-6x-25=-35 what does x equal
    14·2 answers
  • What is the midpoint for 3.818
    12·2 answers
  • Given: sin(x-y) -) 2 1. = cos( 17 - (x - 1) 2. = cos(I – (x+y] ( 1 / ] 3. = cos(( 1 - x)+Y [1 V 4. = cos(1 - x)-(-1] [- 5. = cos
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!