3 years ago

What is the distributive property of -4 (10-b)

Mathematics

2 answers:

Temka [501]3 years ago

7 0

-40-(-4b)
You turn this into -40+4b to understand easier.

brilliants [131]3 years ago

6 0

Answer:

-40+4b

Step-by-step explanation:

You multiply the outside (-4) by the things within the parentheses

You might be interested in

Which answer is not a part of mathematical proofs?

Alex787 [66]

What are the multiple choices

7 0

3 years ago

How many solutions does the system have?

Mrac [35]

Answer:

A Exactly one solution

Step-by-step explanation:

$\left \{ {{6x-3y=9} \atop {6x+y=9}} \right.\\\\\left \{ {{6x-3y=9} \atop {-6x-y=-9}} \right\\\\Then, \\\\-4y=0\\\\\\ y=0\\\\$

Putting y=0 at second equation, we have

$-6x=-9\\\\x=\frac{9}{6} =\frac{3}{2}$

The unique solution is $(\frac{3}{2} , 0)$

3 0

3 years ago

Can some one explain to me what substitution is and how to use it to solve equations?

Yakvenalex [24]

Answer:

Step-by-step explanation:

Say that your equation is 2x+4=8, x=2

you would plug in the 2 where your x is so, 2(2) +4=8

then you'd solve regularly.

Hope my answer has helped you!

5 0

3 years ago

A thread is being pulled off a spool at the rate of 40 cm per second. Find the radius of the spool

murzikaleks [220]

Answer:

r = 0.0424 cm (3sf)

Step-by-step explanation:

it makes 150 rev/sec

1 revolution = 1 circumference = 2pi*r

so every second the spool goes through 2*pi*r*150 of distance

we know that the rate of pulling is 40cm/sec

so 2pi*r*150 = 40

r = 40/(2pi*150), which is 0.04244131816 cm.

check: Circumference is 2pi*r = 0.2666

now multiply by 150rev/sec = 40 cm/sec

3 0

2 years ago

suppose you cut a sheet of paper into fourths and throw away three of fourths . you cut the remaining fourth into fourths and th

frosja888 [35]

I think think that the answer is 4096, but I am not for sure.

7 0

3 years ago