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
ioda
3 years ago
6

The model shows the expression 21 + 9. A model with 3 rows of 7 squares and 3 rows of 3 squares. Which expression is equivalent

to this sum? 3 (7 + 3) 3 (7) + 3 3 + 7 + 3 7 (3 + 3)
Mathematics
2 answers:
DaniilM [7]3 years ago
7 0

Answer: the answer is 3(7+3)

Step-by-step explanation: since 7+3 is in paranthases you add them first to get 10 and you multiply it by the 3 to get 30. We know its correct because 21+9=30.

timofeeve [1]3 years ago
3 0

Answer:the awnser is 3(7+3 ) Step-by-step explanation: I took the quiz today hope u get it right!

You might be interested in
What will slope intercept form be of the equation line 3x-4y=15
Klio2033 [76]
the \ slope \ intercept \ form \ is : \\ \\ y= mx +b \\\\ 3x-4y=15 \ \ |\ subtract\ 3x\ to\ both\ sides\\\\-4y=-3x+15 \ \ | \ divide \ both \ sides\  by\  (-4) \\\\y= \frac{3}{4}x-\frac{15 }{4}  \\\\slope : \ m=\frac{3}{4}
3 0
3 years ago
Read 2 more answers
Sorry but plz forgive me for you feeling like I’m using you guys :(
vaieri [72.5K]

Step-by-step explanation:

67yd² is the answer...........

6 0
3 years ago
Now 11. why is math so hard
nata0808 [166]
A. h = 30Ft * 1.26cm/Ft = 37.8 cm. = Ht. of the model.

37.8cm * 1toothpick/6.3cm = 6 Toothpicks

B. 37.8cm/7.6 = 4.97 hope this helped.
7 0
3 years ago
An 8-oz bottle of ketchup costs $1.39.
inna [77]
First, you need to find how much an ounce costs. To do that, you have to divide 1.39 by 8. Then you get about 0.17. Now, you multiply 0.17 by 14, and get the answer of 2.38. Therefore, a 14-oz bottle of ketchup costs $2.38.
6 0
3 years ago
Read 2 more answers
Please no one is helping me I truly need help pls
vampirchik [111]

Answer:

104 cm^3

Step-by-step explanation:

2(1/2(6*4))+2(1/2(4*10)+(4*10)

2(1/2(24)+(2(1/2(40)+(40)

2(12)+2(20)+40

24+40+40

104 CM^3

3 0
3 years ago
Other questions:
  • If a standard die is rolled twice, what is the probability that it lands on a
    7·1 answer
  • Chan hee purchased a bicycle for $259.99 and a helmet for $67. The sales tax rate is 8.25% What is the total purchase price to t
    15·2 answers
  • Triangle DEF and triangle DGF are shown in the diagram.
    7·2 answers
  • A pair of in-line skates is on sale for $90 iF this price represents 9% discount form the original price,what is the original pr
    10·1 answer
  • If a transversal is perpendicular to one of two parallel lines, how many different angle measures are formed?
    12·1 answer
  • How many more years is the avearge life span of a alligator then a tiger
    15·2 answers
  • 2y + 9 - 6y=-31<br> could I get some help with this​
    11·2 answers
  • 16 cans of soda. Two-eights of the cans are sprite. How many Sprites?
    15·1 answer
  • There are 18 girls and 12 boys on the swim team. What FRACTION of the team is made up of boys?
    7·1 answer
  • Solve the following equation for X.<br> 12r² + 24 = 0
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!