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
Citrus2011 [14]
3 years ago
6

Todd has 21 white tiles dnd some black tiles to make a mosaic. The mosaic has a total area of 144 Square centimeters. Each tile

has an area of 3 square. How many black tiles did Todd use?
Mathematics
1 answer:
tekilochka [14]3 years ago
3 0

Answer:the number of black tiles that Todd used is 27

Step-by-step explanation:

Let x represent the number of black tiles that Todd used.

Todd has 21 white tiles and some black tiles to make a mosaic. Each tile has an area of 3 square. It means that the total area of the white tiles is 21 × 3 = 63 cm^2

The total area of the white tiles is x × 3 = 3x cm^2

The mosaic has a total area of 144 Square centimeters. It means that

3x + 63 = 144

3x = 144 - 63 = 81

x = 81/3 = 27

You might be interested in
What is 14.8 plus 0.97 plus 6.25 simplify
nataly862011 [7]
14.8+.97+6.25= 22.02


4 0
3 years ago
Read 2 more answers
Simply by adding like terms: -7x^2*y*z + 3y*z^2 - z*x^2*y - 4y
Bumek [7]

9514 1404 393

Answer:

  -8x^2·y·z +3y·z^2 -4y

Step-by-step explanation:

It can be helpful to make sure the variables in each term are in alphabetical order. This makes it easier to see "like" terms. The variables in each term are ...

  x^2 y z

  y z^2

  x^2 y z

  y

Only the first and third terms are like terms, so those are the only ones that can be combined. Their coefficients are -7 and -1, so sum to -8. The combined term is of highest degree, so in standard form we list that term first.

  = -8x^2·y·z +3y·z^2 -4y

6 0
3 years ago
A line of best fit is f(x) ≈ −0.86x + 13.5 for the set of points in the table
Maurinko [17]

Answer: -2

Step-by-step explanation:

Because it is

7 0
3 years ago
A survey claims that 9 out of 10 doctors (i.e., 90% recommend brand z for their patients who have children. to test this claim a
iris [78.8K]
OK 100% of doctors in the mid-1800s found to be correct and all surgeries
6 0
3 years ago
EASY QUESTIONS! <br> Whats 1+1?
lord [1]
The answer would be 2
5 0
3 years ago
Read 2 more answers
Other questions:
  • Jamie is trying to eat slices of pizza for 10 minutes. Currently he can eat 16 slices in 10 minutes, but he wants to increase th
    8·1 answer
  • Jaden had 2 7/16 yards of ribbon. He used 1 3/8 yards of ribbon to make a prize ribbon. How much does he have now?
    7·2 answers
  • Calculating conditional probabilities - random permutations. About The letters (a, b, c, d, e, f, g) are put in a random order.
    15·1 answer
  • Stuck on this.. anyone down to help?
    5·2 answers
  • 7295 what is the place value of the 9
    6·2 answers
  • the area of a Trapezium is 132 cm². Its height is 14 cm the larger parallel side is longer than the other by 16 cm. find the len
    11·1 answer
  • Timothy read 3,876 pages this school year. Amelia read 3,768 pages. Who read more pages this school year? E​
    14·1 answer
  • 2:2x11(6+5)+1 HEELLLLLLLLPPPP
    14·1 answer
  • Plz put the work clearly plzz I really need these
    8·1 answer
  • Find the perimeter.<br> Write your answer as a fraction, whole number, or mixed number
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!