What’s the answer to this ?

109

Step-by-step explanation:

A witch is 15 + 15 + 15 = 45

A wand is 7 + 7 + 7 = 21

A broom is 4 + 4 + 4 = 12

First you do one witch which is 15, times one wand which is 7

So, 15 x 7 = 105

Then 105 + one broom which is 4 equals  109

The order I went in was called Pemdas, or order of operations.

What is " Pemdas ? "

Parentheses

Exponent

Multiplication

Division

Addition

Subtraction

WAYS TO REMEMBER:

Please

Excuse

My

Dear

Aunt

Sally

23

Step-by-step explanation:

The wand/star is 7+7+7=21

The broom is 4+4+4=12

The witch is holding a wand and a broom

So: (x is the witch)

7+4+x+7+4+x+7+4+x=45

33+3x=45

3x=45-33

3x=12

x=12/3

x=4

So this makes the last one

4+4x7=?

4+28=32

the answer is 0.000652422

but if you ment to ask what is 6131 divided by 4, it is 1532.75.

step-by-step explanation:

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)