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
nata0808 [166]
2 years ago
12

Reasons why each one of those don't belong​

Mathematics
2 answers:
Fudgin [204]2 years ago
7 0

Answer:

Because if you give the power of 2 to all of them you get a different number

1. 20 squared+ 21 squared = 841

Answer to number 1

Readme [11.4K]2 years ago
4 0
1) 20+21 =41. Since 20^2+21^2 both have ^2 on top. The ^2 would stay the same. So that means the answer would be 41^2 for the first one which is why it is incorrect

2)Same for this. 4^2+5^2= 9^2


3)a^2+b^2 = ab^2 because since a and b are different letters/variables you cannot combine them therefore it is just ab.


4) (-1)^2 = 1 because -1 multiply by -1 again you would get positive 1. Next you do 1+0^2 = 1. Because 0^2 is just 0 because 0times 0 =0 so 1+0 = 1
You might be interested in
What is the value of 4³ pls help for quiz 10 points
loris [4]

Answer:

64

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Y=x+2 2x-y=-4 Solve the systems of equations
larisa86 [58]

Answer:

Step-by-step explanation:

Given that,

y=x+2 equation 1

2x-y=-4 equation 2

This is a simultaneous equation.

Substitute equation 1 into equation 2

2x-y=-4. Since y=x+2

2x-(x+2) = -4

2x-x-2 = -4

x-2 = -4

x = -4+2

x = -2

Also from equation 1

y=x+2

Since x=-2

y=-2+2

y=0

Then, solution (x, y) = (-2,0)

4 0
3 years ago
Read 2 more answers
4. Which expression is a simplified form of -5(8x)?<br> a. 40x<br> b. -40%<br> C. 3x<br> d. -40x?
Sedbober [7]

Answer:

Option d

Step-by-step explanation:

-5(8x)

= -5×8×x

= -40x

Answered by GAUTHMATH

5 0
2 years ago
To use Long Division of Polynomials to verify that x = a/b is a zero on a polynomial function P(x), the divisor would be
Strike441 [17]

Answer:

  D)  bx - a

Step-by-step explanation:

If a/b is a zero, then (x -a/b) is a factor of the polynomial. That is, the value x=a/b will make a factor of the polynomial be zero.

The above factor can be written without fractions by multiplying it by b:

  (bx -a) . . . . matches choice D

__

You can also choose the answer on the basis of which expression becomes zero when x=a/b.

4 0
3 years ago
write the equation In point slope form of the line with slope 2/5 and passing through the point (-8,1)
Dominik [7]
Point-slope:

y-y1= m(x-x1)

Plug in what you know. 

y1= 1 and x1= -8

y-1= 2/5(x-(-8)
y-1= 2/5(x+8)

Distribute. 

y-1=.4x+ 3.2 <- that is the final answer

I hope this helps!
~kaikers


5 0
3 years ago
Other questions:
  • 25 points. Similarity in triangles
    8·1 answer
  • What is the minimum number of degrees a pentagon is rotated clockwise to carry onto itself?
    10·1 answer
  • Given lines appearing parallel are parallel, ∠7=30°, and ∠10=80°, find the measure of the following angles.
    7·1 answer
  • Hans pays $396 in advance on his account at the athletic club. Each time he uses the club, $5 is deducted from the account. What
    15·1 answer
  • What is an equation of the line, in point-slope form, that passes through the given point and has the given slope? Point: (7,3)
    13·1 answer
  • Use the substitution method to solve the system of equations. Choose the
    13·1 answer
  • Lesley's trash can had a diameter of 18.25 inches. What was the circumference of the can?
    11·1 answer
  • I need help can you guys answer it the question is which rate describes a unit rate of 8:1???
    5·2 answers
  • If ur reading this right now plz help me whenever I ask a question, this random account under different names keeps sending me r
    9·1 answer
  • A car travels 500 miles in 5.5 hour how many hours would it take the car to travel 900 miles
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!