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
anastassius [24]
2 years ago
15

- Todd uses 21 white tiles and 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 centimeters. How many black tiles did Todd use? Explain.
(Help me please)
Mathematics
2 answers:
pshichka [43]2 years ago
8 0

The answer is 27 tiles !

21 white tiles × 3  = the total area it takes up!

21 × 3 = 63

144 - 63 = 81

81 is the area left!

Divide by 3 to find how many black tiles are needed!

81÷ 3 = 27

Hope I Helped !

Anna71 [15]2 years ago
5 0

Answer:

48

Step-by-step explanation:

21 white tiles = 63 cm2

total number is 144

144-63 = 81

81/3 = 27

so 27 black tiles

21+27 = 48 total.

You might be interested in
Which statement about the net is true?
Schach [20]
The net cannot be folded to form a pyramid because the faces that are not a base are not all triangles

If you fold this net up, you will get a triangular prism, NOT A PYRAMID.

A pyramid can have ANY polygon as its base, as long as all the other rest of the shapes are triangles.

Depending on the base, the number of triangles in a net of a pyramid must match the number of sides its particular base has.

For example, if you have a square pyramid turned into a net:
The base is a square (4 sides)
There should be 4 triangles on each side.

Because a pyramid is where all the triangles must meet up at a point.

Hope this helps!
3 0
3 years ago
Help! Please! Will give brainliest!
MrRissso [65]

Editing this Answer...

8 0
2 years ago
Read 2 more answers
Of the students attending a rock concert, 80 of them were 8th graders. Of these 8th graders, 25% of them were wearing ear plugs.
zhuklara [117]

Answer:

15%

Step-by-step explanation:

If 10% of the 25% of 8th graders who were male, 15% would be females because 25-10= 15. So, 15% would be my answer.

6 0
2 years ago
A.if all 110 million households spent the same additional dollars on appliances, electronics, and furniture as the sample 30,000
Afina-wow [57]

Answer:

Step-by-step explanation:

B. 10010 million

C. 100100

6 0
3 years ago
PLz answer before 11:59 pm
Tpy6a [65]

Answer:

SA = 2520 ft^2

Step-by-step explanation:

a = 21ft

b = 29ft

c = 20ft

h = 30ft

SA = 2A_{B} + (a+b+c)h

A_{B} = s(s﹣a)(s﹣b)(s﹣c)

s = \frac{a + b + c}{2}

SA= ah + bh + ch + \frac{1}{2} \sqrt{-a^4 + 2(ab)^2 + 2(ac)^2 - b^4 + 2(bc)^2 - c4}

SA= (21 * 30) + (29 * 30) + (20 * 30) +

       \frac{1}{2} \sqrt{-(21)^4 + 2(21 * 29)^2 + 2(21 * 20)^2 - (29)^4 + 2(29 * 20)^2 - (20)^4}

SA = 2520 ft^2

6 0
3 years ago
Other questions:
  • Can someone help me find the domain
    10·2 answers
  • Write an algebraic equation or expression or the word phrase<br><br> 25y=5
    6·2 answers
  • Noelle ran 4 1/2 miles in the morning and 3 1/4 miles in the evening. How far did Noelle run that day?
    9·1 answer
  • Solve for c.<br>C= [?]<br>Enter the number<br>that goes beneath<br>the radical symbol.<br>​
    15·1 answer
  • Which of the following is a trinomial with a constant term?
    9·1 answer
  • Estimate 308.3 divided by 15
    10·2 answers
  • The graph shows how many apples Erin can pick if she maintains a constant rate. What is the linear equation for this relationshi
    5·1 answer
  • Please someone help me eeeeeee
    9·1 answer
  • Se M =2³ e N =2², determine (M² . N³)²:
    9·2 answers
  • DOES ANYONE KNOW PLEASE HELP ME I WILL MARK BRAINLIEST &lt;3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!