2 years ago

-2(5y - 8) help me now

Mathematics

2 answers:

hammer [34]2 years ago

7 0

Answer:

-10y +16 (if this isn't right tell me exactly what you have to do)

sweet-ann [11.9K]2 years ago

3 0

Answer:

-2×5y-2×(-8)=

= -10y+16

You might be interested in

I have to take my geometry eoc im so nervous

valentinak56 [21]

Good luck I really hope you past it then

6 0

1 year ago

(x1/2y)^4 help me please I need an A

vodka [1.7K]

Answer:

this is simplify 1/16 x4 y4

4 0

2 years ago

Which of the following is an extraneous solution of (45-3x)^1/2=x-9?

Iteru [2.4K]

Answer:

C. x =3

Step-by-step explanation:

Extraneous solution is that root of a transformed equation that doesn't satisfy the equation in it's original form because it was excluded from the domain of the original equation.

Let's solve the equation first

$\sqrt{45-3x} = x-9\\Taking\ square\ on\ both\ sides\\{(\sqrt{45-3x})}^2 = {(x-9)}^2\\45-3x = x^2-18x+81\\0 = x^2-18x+81-45+3x\\x^2-15x+36 = 0\\x^2-12x-3x+36 = 0\\x(x-12)-3(x-12) = 0\\(x-3)(x-12)\\x-3 = 0\\=> x =3\\x-12 = 0\\x = 12\\We\ will\ check\ the\ solutions\ one\ by\ one\\So,\\for\ x=3\\\sqrt{45-3(3)} = 3-9\\\sqrt{45-9} = -6\\\sqrt{36}= -6\\6\neq -6\\For x=12\\\sqrt{45-3(12)} = 12-9\\\sqrt{45-36} = 6\\\sqrt{36}= 6\\6=6$

Hence, we can conclude that x=3 is an extraneous solution of the equation ..

3 0

3 years ago

2. Select all ratios that are equivalent to 3:18. 21:126 6:36 1:6 1:18 15 21

larisa86 [58]

The answers would be 6:36, 21:126, and 1:6

7 0

2 years ago

PLZ HELP! Need this ASAP! Thx so much :)

Tamiku [17]

Multiply 8,200 and 0.80 and then subtract 8200 and the value you get

5 0

2 years ago