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3 years ago

Please help! if anybody is good at equivalent polynomial expressions please help!!

Mathematics

1 answer:

STatiana [176]3 years ago

7 0

X/5 - 5/x = (x^2 - 25) / 5x. It looks like that's the answer you chose... so way to go!

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4/9+4(x-1)=28/9-(x-7x)+1

kobusy [5.1K]

X= -23/6 or x= -3.83

6 0

3 years ago

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Find the volume of the cylinder. Use 3.14 for pie

Rudik [331]

Volume of a cylinder formula is
$v = \pi {r}^{2} \times h$
$v = 3.14 \times {3}^{2} \times 12$

3 0

3 years ago

i need help with number 7. its solving systems of equations by substitution. please show work!!! i need help

SIZIF [17.4K]

#7:
Subtract y from both sides:
-4x=6-y

Divide both sides by -4:

Answer:
x= -6-y/4

#7 part 2:

Add y to both sides:
-5x=21+y

Divide both sides by -5:

Answer: x=-21+y/5

hope i helped!

7 0

3 years ago

last night, julie's pet hamster zoe kept julie awake for at least an hour running on her exercise wheel and scratching at the co

borishaifa [10]

Answer: $x+y\geq 1$ , $x>\frac{1}{4}$ , $x\geq 2y$ and $y\geq 0$

Step-by-step explanation:

Here, x represents the number of hours Zoe spent running on her wheel and y represents the number of hours spent scratching her cage.

Julie was awoke for at least an hour running on her exercise wheel and scratching the of her cage.

⇒ $x+y\geq 1$

She ran on her wheel at least twice as long as she scratched at the corners of her cage.

⇒ $x\geq 2y$

Also, She spent more than 1/4 hour running on her wheel.

⇒ $x>\frac{1}{4}$

And, we know that number of hours can not be negative.

⇒ $y\geq 0$

Therefore, the complete system of inequality which shows the given situation is,

$x+y\geq 1$ , $x>\frac{1}{4}$ and $x\geq 2y$ , $y\geq 0$

Note: the feasible region ( covered by the given system) is shown in the below graph.

6 0

3 years ago

220 equals 99 subtracted from b

Softa [21]

Answer:

220 = b - 99

309 = b

3 0

2 years ago

Read 2 more answers