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
vladimir2022 [97]
3 years ago
9

Evaluate the summation of negative 5 n minus 1, from n equals 3 to 12..

Mathematics
2 answers:
USPshnik [31]3 years ago
6 0
The correct answer for the question that is being presented above is this one: "B. -385." Evaluate the summation of negative 5 n minus 1, from n equals 3 to 12 equals B. -385


-5n - 1 where n = 3 to 12.
n = 3 = -16
n = 4 = -21
n = 5 = -26
n = 6 = -31
n = 7 = -36
n = 8 = -41
n = 9 = -46
n = 10 = -51
n =11 = -56
n = 12 = -61

Total = B. -385
sammy [17]3 years ago
4 0

Answer:

B.) -385

Step-by-step explanation:

I just took the test

You might be interested in
Patriciodeposits $500 in the same account that pays a 1.5% simple interest he does not withdraw any money from the account any m
olga nikolaevna [1]

Answer: $537.5

Step-by-step explanation:

$500 at 1.5% for 5 years

p x  r x t = i

500 x 0.015 x 5= 37.5

37.5+500=537.5

7 0
3 years ago
A glass paperweight has a composite shape: a square pyramid fitting exacty on top of an 8 centimeter cube. The pyramid has a hei
ArbitrLikvidat [17]

Answer:

Part 1) The volume of the paperweight is 576\ cm^{3}

Part 2) The total surface area of the paperweight is 400\ cm^{2}

Step-by-step explanation:

Part 1) what is the volume of the paperweight?

we know that

The volume of the paperweight is equal to the volume of the square pyramid plus the volume of the cube

step 1

Find the volume of the pyramid

The volume of the pyramid is equal to

V=\frac{1}{3}BH

where

B is the area of the square base

H is the height of the pyramid

B=8^{2}=64\ cm^{2}

H=3\ cm

substitute

V=\frac{1}{3}(64)(3)=64\ cm^{3}

step 2

Find the volume of the cube

The volume of the cube is equal to

V=b^{3}

V=8^{3}=512\ cm^{3}

step 3

Find the volume of the paperweight

64\ cm^{3}+512\ cm^{3}=576\ cm^{3}

Part 2) what is the total surface area of the paperweight?​

we know that

The total surface area of the paperweight is equal to the surface area of 5 faces of the cube plus the lateral area of the pyramid

step 1

Find the surface area of 5 faces of the cube

SA=5b^{2}

SA=5(8^{2})=320\ cm^{2}

step 2

Find the lateral area of the pyramid

LA=4[\frac{1}{2}bh]

LA=4[\frac{1}{2}(8)(5)]=80\ cm^{2}

step 3

Find the total surface area of the paperweight

320\ cm^{2}+80\ cm^{2}=400\ cm^{2}

8 0
3 years ago
Help I will be marking brainliest!!
lora16 [44]

Answer:

<u>Given</u>: base = 10.4ft, height = 12.5

Area of octagon = 8(1/2 × b × h)

  • 8(1/2 × 10.4 × 12.5)
  • 520ft²

Volume of pool = 520ft² × 3ft

  • 1560ft³

Now, 1 cubic ft takes 7.5 gallons to fill.

Therefore, 1560 cubic ft takes,

  • 1560 × 7.5
  • 11700

So, <u>Correct choice</u> - [D] 11,700.

5 0
3 years ago
Which sign makes the statement true? 93/100 ? 2/5
polet [3.4K]

Answer:

>.

Step-by-step explanation:

93/100 = 0.93

2/5 = 0.4,  so:

93/100 > 2/5.

7 0
3 years ago
Sara bought a computer that was originally priced at $896. The computer was for 12% off. When she bought the computer, a 7% tax
lozanna [386]

Answer:

Sara spent 733.29

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • ANSWER QUICKLY. I GIVE BRAINLIEST AND A FOLLOW.​
    15·2 answers
  • given the equation y=4/5x+1, identify the slope and the y-intercept of the equation. Then graph the equation
    8·1 answer
  • Solve for c<br><br> 2 ( 2c + 9 ) = c <br><br> c = ??
    10·2 answers
  • How many integers between 1000 and 2000 have all three of the numbers 15,20 and 25 as factors
    14·1 answer
  • Quick need the answer to to this!
    11·1 answer
  • The point a is located on the y-axis, 6 units above the x-axis. what are the coordinates of point a?
    11·1 answer
  • Taking algebra (9th grade) pls helpp
    12·1 answer
  • Break the dividend into smaller parts that are easier to divide write the equivalent name you used.
    7·1 answer
  • Employees at a company are given £800 to spend on items for the office.
    15·2 answers
  • PLEASE HELP!! DUE SOON!!! WILL GIVE 5 STARS ALONG WITH A HEART!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!