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Zina [86]
3 years ago
8

PLEASE HELP THIS IS URGENT! IM REALLY CONFUSED ON THIS AND I REALLY NEED HELP AND AN EXPLANATION ON THIS!! PLEASE AND THANK YOU!

!!

Mathematics
1 answer:
FromTheMoon [43]3 years ago
8 0

Answer:

A is 7   and B is

Step-by-step explanation:

A: 3x2 is 6+1 is 7

B: 3x5 is 8 + 1 so 9+9+9+9 is 36

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What is the square root
shusha [124]

Answer:

Step-by-step explanation:

Trying to factor as a Difference of Squares :

1.1      Factoring:  r2-96

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 96 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares.

Equation at the end of step  1  :

 r2 - 96  = 0

Step  2  :

Solving a Single Variable Equation :

2.1      Solve  :    r2-96 = 0

Add  96  to both sides of the equation :

                     r2 = 96

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     r  =  ± √ 96  

Can  √ 96 be simplified ?

Yes!   The prime factorization of  96   is

  2•2•2•2•2•3

To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).

√ 96   =  √ 2•2•2•2•2•3   =2•2•√ 6   =

               ±  4 • √ 6

The equation has two real solutions  

These solutions are  r = 4 • ± √6 = ± 9.7980  

Two solutions were found :

                  r = 4 • ± √6 = ± 9.7980

Processing ends successfully

4 0
3 years ago
Rick has 7 cats. Carrie has 14 cats. How many fewer cats does Rick have
guapka [62]

Answer:

He has 7 fewer cats because

Step-by-step explanation:

14-7=7

8 0
2 years ago
Please use an equation step by step and please show the numbers do not use words
Pepsi [2]

Answer:

Sorry but u need another photo i can't see

3 0
2 years ago
cylinder A has a radius of 6 centimeters cylinder B has the same height and a radius half as long as cylinder A what fraction of
REY [17]
Volume of a cylinder=the area of the base multiply the height
Cylinder A's volume: pi*6*6*h=36*pi*h
Cylinder B's volume: pi*3*3*h=9*pi*h
so the fraction is 9/36=1/4
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6 0
3 years ago
Juanita says that 3.5[4d - (2) (1.5)] and 2[7d - (5)(1.05)] are equivalent. Is Juanita correct? Explain your reasoning.
valkas [14]

Answer:

Yes

Step-by-step explanation:

3.5 [4d - 2*1.5] = 3.5*4d - 3.5*2*1.5

                        = 14d - 10.5

2*[7d - 5*1.05] = 2*7d - 2*5*1.05

                       = 14d -  10.5

When we are simplifying both the expression using distributive property, we get the same expression at the end.

8 0
3 years ago
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