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
shusha [124]
3 years ago
15

When is 9+10 really equal to 21

Mathematics
2 answers:
schepotkina [342]3 years ago
4 0

Answer:

9 + 10 = 21

Step-by-step explanation:

9 + 10 = 21

Factor out 9 and 10

9 = 3 · 3   10 = 2 · 5

Next multiply 3 by 2

3 × 2 = 6

Then multiply 3 by 5

3 · 5 = 15

Finally add the products

15 + 6 = 21

Aleksandr [31]3 years ago
4 0
It can never be equal to 21 because that’s not how math works
You might be interested in
Can u help me ASAP!!!
Rom4ik [11]
Can be reduced to 1/3
8 0
3 years ago
Solve for K please help
algol [13]

Answer:

vfssfdgddedt

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
there are 12 students who play the clarinet and 16 students who play the viola. what does the ratio 16:12 describe?​
Oksi-84 [34.3K]

Answer: The ratio 16:12 describes the ratio of the number of students who play the viola to the students who play the clarinet.

Step-by-step explanation:

Given : Number of students who play the clarinet= 12

Number of students who play the viola=16

We know that ratio of A to B is represented by A:B.

Since, the number '12' is representing " students who play the clarinet" and  number '16' is representing  " students who play the viola"

So , the ratio 16:12 describes the ratio of the number of students who play the viola to the students who play the clarinet.

6 0
3 years ago
Sam's van travels 208.8 miles on 9 gallons of gasoline. Hasan's small car travels 234.4 miles on 8 gallons of gasoline. What is
poizon [28]

Answer:

The difference between the vehicles is 0,009 gallons per mile.

Step-by-step explanation:

To know the difference between the vehicles in gallons per mile we need to obtain this information for each car:

-Sam´s van

  Gallons per mile: 9 gallons/208.8 miles

  Gallons per mile: 0.0431

-Hasan´s small car:

 Gallons per mile: 8 gallons/234.4 miles

 Gallons per mile: 0.0341

The difference between the vehicles is:

0.0431-0.0341= 0,009 gallons per mile

5 1
3 years ago
Read 2 more answers
Please answer this question now
Alex787 [66]

Answer:

541.7 (m2)

Step-by-step explanation:

Applying the sine theorem:

WV/sin(X) = XV/sin(W)

=> WV = XV*sin(X)/sin(W) = 37*sin(50)/sin(63) = 31.81

Angle V = 180 - X - W = 180 - 50 - 63 = 67

Denote WH is a height of the triangle VWX, H lies on XV

=> WH = WV*sin(V) = 31.81*sin(67) =  29.28

=> Area of triangle VWX is calculated by:

S = side*height/2 = XV*WH/2 = 37*29.28/2 = 541.7 (m2)

8 0
3 years ago
Other questions:
  • Convert to a form that reveals the zeros
    12·1 answer
  • What is the answer to this problem please -5a +3(3a -9)=
    8·1 answer
  • Bens home improvement loan to build a security fence around his property was for $1,800.00 at 5.00% interest for 12 months. Afte
    5·1 answer
  • Please answer this correctly
    5·2 answers
  • Find an angle 0 coterminal to 801°, where 0° < 0 < 360°.​
    8·1 answer
  • I need this please help me
    14·1 answer
  • What is 56.000,000,000 in scienfic notaion?
    9·1 answer
  • 7 X 8 -3×2. His work is below .​
    11·1 answer
  • Using the rule y = -x + 2, complete the input/output table shown below
    15·1 answer
  • Someone please? ??? .....
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!