PLSSSS HELPPP 18 POINTS MATHHH PLSSS HELPPP

Mathematics

2 answers:

notsponge [240]1 year ago

8 0

Answer:

$\sf \bf 81x^8$

Step-by-step explanation:

<h3>Exponent rule:</h3>

In exponent multiplication, if bases are same, add the exponents.

$\sf \bf a^m*a^n = a^{m+n}$

$\sf (-9x^5)(-9x^3) = (-9)*(-9) * x^{5+3}$

$\sf = 81x^8$

DiKsa [7]1 year ago

3 0

Answer:

$81x^{8}$

Step-by-step explanation:

I gotchu again, papiii!! :D

This is an easy one too! Theres a couple rules you should be familair with:

A positive multiplied by a positive is a positive.
A positive multiplied by a negative is a negative.
A negative multiplied by a negative is a positive.

Furthermore, when you have a problem in this form, you MULTIPLY the coefficients and ADD the exponents. So, -9 * -9 = POSITIVE 81, and $x^{5+3}=x^8$ . Therefore, the answer is $81x^{8}$

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Which best explains why the expression plus or minus StartRoot b squared minus 4 a c EndRoot cannot be rewritten as b plus or mi

Gelneren [198K]

Answer:

C) The square root of terms separated by addition and subtraction cannot be calculated individually.

Step-by-step explanation:

sqrt(b² - 4ac) is not equal to

b - sqrt(4ac)

Because when you square b - sqrt(4ac), it's not b² - 4ac..

(b- sqrt(4ac))² = b² - 2bsqrt(4ac) + 4ac

9 0

3 years ago

Read 2 more answers

The length of Albert's rectangular are listed below.

trapecia [35]

A. Length - 100 ft Width - 50 ft is the measurement of Tony's backyard.

Albert's Perimeter = 2(l+w) = 2(40+20) = 2(60) = 120 ft.

Tony's Perimeter = 120 ft * 2.5 = 300 ft
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To check tony's perimeter:
P = 2(l + w) = 2 (100 + 50) = 2 (150) = 300 ft.

3 0

3 years ago

A house blueprint has a scale of 1 in. : 4 ft. The length and width of each room in the actual house are shown in the table. Com

Mariulka [41]

We know that
scale------------> 1 in/4 ft
[blueprint]=scale*[actual]

Part 1) <span> Living room
lenght (20 ft) -------------> </span>[blueprint]=(1/4)*20=5 in<span>
width (8 ft) ----------------> </span>[blueprint]=(1/4)*8=2 in

Part 2) Kitchen
length (16 ft) -------------> [blueprint]=(1/4)*16=4 in
width (16 ft) ----------------> [blueprint]=(1/4)*16=4 in

Part 3) Office
length (8 ft) -------------> [blueprint]=(1/4)*8=2 in
width (16 ft) ----------------> [blueprint]=(1/4)*16=4 in

Part 4) Bedroom 1
length (8 ft) -------------> [blueprint]=(1/4)*8=2 in
width (16 ft) ----------------> [blueprint]=(1/4)*16=4 in

Part 5) Bedroom 2
length (20 ft) -------------> [blueprint]=(1/4)*20=5 in
width (20 ft) ----------------> [blueprint]=(1/4)*20=5 in

Part 6) <span>Bathroom</span>
length (6 ft) -------------> [blueprint]=(1/4)*6=1.5 in
width (8 ft) ----------------> [blueprint]=(1/4)*8=2 in

see the attached figure to view the table