Ask question

Ask question

All categories

3 years ago

8

Expand. If necessary, combine like terms. (x+3)(x – 3) = ?

2 answers:

zhannawk [14.2K]3 years ago

8 0

Answer:

i did it on khan

Step-by-step explanation:

its x^2=9

Kobotan [32]3 years ago

5 0

Step-by-step explanation:

multiply it

x²-3x+3x-9=0

x²-9=0

x²=9

square root both side we get

x=3

You might be interested in

What’s the equation of a line with an undefined slope passing through (-1,7)

Nataly [62]

Answer:

y=7

Step-by-step explanation:

5 0

3 years ago

Classify the following triangle. Check all that apply.

____ [38]

Answer:

Acute and Straight

Step-by-step explanation:

8 0

4 years ago

How do I solve this? Helppp

Bingel [31]

Answer:

-5 ,0,5

Step-by-step explanation:

x^2 ≤ 25

Take the square root of each side

sqrt(x^2) ≤ sqrt(25)

sqrt (25) is +5 and -5

x ≤ 5 and x ≥ -5

-5 ≤x ≤ 5

The choices are -5 ,0,5

5 0

3 years ago

a population of insects increases at a rate of 1.5% per day about how long will it take to double A)2.5 days b) 5.0 days c) 46.6

ANTONII [103]

We can use population formula

$P(t)=P_0(1+r)^{t}$

we are given

interest rate is 1.5% per day

so,

$r=0.015$

now, we can plug values

$P(t)=P_0(1+0.015)^{t}$

$P(t)=P_0(1.015)^{t}$

we are given

P(t)=2Po

we can plug it

$2P_0=P_0(1.015)^{t}$

we can solve for t

$2=(1.015)^{t}$

$t=46.55$

so,

number of days is 46.5..........Answer

6 0

3 years ago

Read 2 more answers

I need some help . I don't understand

CaHeK987 [17]

The answer is d. angles 8 and 16

8 0

3 years ago

Read 2 more answers