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
Verizon [17]
2 years ago
7

My teacher said that 9+10 could equal 21 TELL me how

Mathematics
2 answers:
AlladinOne [14]2 years ago
3 0
Proof:
9+10=?
9 = 3x3
10= 5x2
3 (from 3x3) x 5 (from 5x2) = 15
3 (from 3x3) x 2 (from 5x2) = 6
15+6=21
Therefore 9+10=21

21 CONFIRMED
Georgia [21]2 years ago
3 0
9+10=21 because you think different
3 times 3 equals 9
5 times 2 equals 10
multiply these t=numbers then add then you get 21

You might be interested in
Complete the table... plz help ​
ICE Princess25 [194]

Answer:

3=20

4=15

5=12

Step-by-step explanation:

4 0
3 years ago
7 and 12 Find the measure of angle x. Round your answer to the nearest hundredth. (please type the numerical answer only) (30 Po
goldfiish [28.3K]

Answer:

Angle Y = 35.69 degrees

Step-by-step explanation:

We can use some simple trigonometry to help us out. Here we know that side 7 is the opposite side relative to angle y, and  12 is the hypotenuse.

We think what trig ratio involves comparing opposite and hypotenuse. Sine is opposite over hypotenuse and we can set up a equation to solve.

Sine (Angle Y) = Opposite Side / Hypotenuse

Sine (Angle Y) = 7/12

(Angle Y) = Sine inverse (7/12)

Angle Y = 35.69

8 0
1 year ago
Evaluate the expression below:
Olin [163]

Answer:

answer is 16

follow me!

4 0
2 years ago
Read 2 more answers
Which expression is equivalent to (4 × 8) + (4 × 3)?
bixtya [17]

Answer:

D.

Step-by-step explanation:

(4 x 8) + (4 x 3)=44

4 x (8 + 3)=44

3 0
2 years ago
A person jogs 1/7 mile in 1/42 hour. How many miles do they jog an hour?
vitfil [10]
You multiply both by 42: They jog 6 miles per hour
6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the equation of the straight line that passes through the point (1,1/2) and has slope 1/2. Enter the equation in the point-
    7·1 answer
  • 28 -4t = 3t is it 4 the answer
    13·2 answers
  • The best fit line must go through all data points on a graph. TRUE OR FALSE
    12·1 answer
  • the area of a rectangle is 90 in2^. the ratio of the length to the width is 5:2. find the length and the width
    11·1 answer
  • Ivy and cammie sold tulip and daffodil bulb packages for their spring fundraiser. Ivy sold 12 packages of tulip bulbs (X) and 14
    11·2 answers
  • What kind of triangle is this?
    6·2 answers
  • Help now for Math!!!!!!!
    5·1 answer
  • Name three chords. <br><br><br>name five radii​
    14·2 answers
  • Please help!
    10·1 answer
  • A red die is tossed and then a green dieis tossed. What is the probability thatthe red die shows a six or the green dieshows a s
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!