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
Len [333]
3 years ago
12

What is the sum of the first nine terms of this Sequence if the first term is 0?

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

Answer:

D. 160

Step-by-step explanation:

The sum of the sequence 1, 2, 3, 4, ... , n is n(n + 1)/2.

Here, you have the sum of 4(1, 2, 3, 4, ... , n), so the sum is 4[n(n + 1)/2]

In this case, the first term is 0, so the last term is the 8th term of the sequence above, so n = 8

4[n(n + 1)/2)] =

= 4[8(9)/2]

= 4[72/2]

= 4(36)

= 144

The closest answer is D. 160

pishuonlain [190]3 years ago
7 0

Answer:

The answer is B.

Step-by-step explanation:

First you write out the first nine multiples of 4. Then you add them.

4 + 8 + 12 + 16 + 20 + 24 + 28 + 32 + 36 = 180


You might be interested in
16-2t=t+9+4t. need help with this​
kkurt [141]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

t =1

3 0
3 years ago
Read 2 more answers
Mariana tried to drink a slushy as fast as she could. She drank the slushy at a rate of 4.5 milliliters per second. After 17 sec
sertanlavr [38]

This is what i did to get the answer.

225/ 4.5 = 50 seconds to finish the slushy.

5 0
2 years ago
1.32:3 1/7 =(1.4y): 5/6
alina1380 [7]

After solving 1.32:3 \frac{1}{7}=(1.4y):\frac{5}{6}  we get y=0.24

Step-by-step explanation:

We need to solve the ratio: 1.32:3 \frac{1}{7}=(1.4y):\frac{5}{6} and find value of y

Solving:

1.32:3 \frac{1}{7}=(1.4y):\frac{5}{6}

Converting fractions into decimals

1.32:3.14=(1.4y):0.83

Ratio can be written as:

\frac{1.32}{3.14}=\frac{1.4y}{0.83}

Now cross multiply

1.32*0.83=1.4y*3.14

1.09=4.39y

y=\frac{1.09}{4.39}

y=0.24

So, after solving 1.32:3 \frac{1}{7}=(1.4y):\frac{5}{6}  we get y=0.24

Keywords: Ratio

Learn more about Ratios at:

  • brainly.com/question/11280112
  • brainly.com/question/11286417
  • brainly.com/question/4847829

#learnwithBrainly

6 0
3 years ago
Solve system of linear equation by substitution -x+y=2; 3x-5y=-4
GarryVolchara [31]

Answer:

(-3,-1)

Step-by-step explanation:

-x+y=2

3x-5y=-4

in the top equation, we can get y by itself on one side of the equation:

-x+y=2

y=x+2

now, since we know that y=x+2, in the bottom equation we can substitute x+2 for y (substitution method) and solve:

3x-5y=-4

3x-5(x+2)=-4

3x-5x-10=-4

-2x-10=-4

-2x=6

x=-3

since we now know that x=-3, we can use it to find y by plugging in -3 for x in the top equation (you can do it in either equation, but doing it in the top equation is easier):

y=x+2

y=-3+2

y=-1

answer: (-3, -1)

7 0
3 years ago
45 Points! Exponets! Please show ALL Work
anygoal [31]
On the first one you do 2x 2x2 • 2x2x2x2x2 = 60
8 0
3 years ago
Other questions:
  • Please help i dont know this. I beg yall.​
    7·1 answer
  • What is the standard form of the equation of the circle with center (-2, -3) and a radius of _/2 /4 ?
    5·1 answer
  • Monthly salary is 1848 plus a sales commission of 5.2% of the total sales for the month. what is the equation
    7·1 answer
  • A bag contains nickels, quarters and pennies. If a handful of coins brings in five nickels, 3 quarters, and nine pennies, how mu
    6·1 answer
  • Find the number of solutions of -x^2 + 5x - 4 = 0.
    15·1 answer
  • The area of the rhombus is 540 cm2; the length of one of its diagonals is 4.5 dm. What is the distance between the point of inte
    12·1 answer
  • ILL GIVE YOU BRAINLIST !!! HAVE TO GET IT RIGHT !!
    12·1 answer
  • Which statement about the figure is true
    9·1 answer
  • The function h(x) is defined by the expression x2 - 4x + 3. Use factoring
    7·1 answer
  • What is 10-12d +6c in standard form
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!