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
Blizzard [7]
2 years ago
12

A child building a tower with Blocks uses 15 for the bottom row. Each row has 2 fewer blocks than the previous row. What formula

would you use to find the number of blocks in the 5th row?
A)blocks in 5th row =15+(15-1)-2
B)blocks in 5th row=15+(5-1)(-2)
C)blocks in 5th row=15+(5+1)(-2)
D)blocks in 5th row=5+(15-1)(-2)
Mathematics
1 answer:
xenn [34]2 years ago
4 0

Answer:

B)blocks in 5th row=15+(5-1)(-2)

Step-by-step explanation:

We are given that

Number of block in bottom row=15

Each row has 2 fewer blocks than the previous row

We have to find the formula would you use to find the number of blocks in the 5th row.

Number of blocks in  second row=15-2=15+1(-2)

Number of blocks in third row=15-2-2=15+2(-2)

Number of blocks in 4th row=15-2-2-2=15+3(-2)

Number of blocks in 5th row=15-2-2-2-2=15+4(-2)

Therefore, number of block in 5th row

15+(5-1)(-2)

This is required formula to find the number of blocks in the 5th row

Hence, option B is true.

B)blocks in 5th row=15+(5-1)(-2)

You might be interested in
Pete buys 5 video games at $64 each and pays for them with $20 bills. How many $20 bills does it take?
slavikrds [6]

64 * 5 = 512

512/20 = 25.6

It takes 26 $20 bills.

4 0
3 years ago
Read 2 more answers
Alison has three dogs but only two dog biscuits how can she divide them so that each dog get the same amount?
Lera25 [3.4K]
Each dog can get 2/3 of a dog biscuit. 
7 0
3 years ago
Read 2 more answers
Geometry math question no Guessing and Please show work
lesya [120]

2x - y = 7

y = 2x - 7 this line has slope = 2

Perpendicular lines, slope is opposite and reciprocal so slope = -1/2

Answer

A . -1/2

4 0
3 years ago
What is the area of the polygon given below?
almond37 [142]

Answer:

diện tích đa giác trong hình là :

186 cm2

Step-by-step explanation:

hãy tách hình đa giác trên thành 4 hình chữ nhật và tính diện tích từng hình chữ nhật

4 0
2 years ago
Someooonnnneeee please help
Sergeeva-Olga [200]

In this case the answer is 1/4 because she makes 2 revolutions in 8 minutes. 2/8 = 1/4

7 0
3 years ago
Other questions:
  • The basket of golf balls at a miniature golf course contains 18 golf balls, of which 9 are red. What is the probability that a r
    8·2 answers
  • What is the value of the expression 2x² – 5x + 6 when<br> x = -2?
    11·1 answer
  • You are buying a new television and see it at the same price in several shops with various discounts.
    11·2 answers
  • Select Equal or Not Equal to correctly classify each statement.
    11·2 answers
  • How many hours in 2 years
    12·2 answers
  • A right rectangle prism has a length of 5 cm, a width of 4 cm, and a height of of 3 cm. The dimensions of the prism are doubled.
    11·2 answers
  • Find the value of x below​
    7·1 answer
  • PLEASE HELP ME
    15·1 answer
  • Into how many equal parts can the same cake be cut if the cuts can only be made along the gridlines? cake can be cut into equal
    6·1 answer
  • Geometry: Angle Pairs &amp; Segment &amp; Angle Addition Postulate <br><br>Please help ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!