Ask question

Ask question

All categories

2 years ago

6

Please help! Will mark brainliest! Simplify.

tle="(3a^{2}*-3a)" alt="(3a^{2}*-3a)" align="absmiddle" class="latex-formula">

1 answer:

PilotLPTM [1.2K]2 years ago

8 0

<em>S</em><em>t</em><em>e</em><em>p</em><em>-</em><em>b</em><em>y</em><em>-</em><em>s</em><em>t</em><em>e</em><em>p</em><em> </em><em>e</em><em>xplanation</em><em>:</em>

<em>Since</em><em> </em><em>-3a</em><em> </em><em>can</em><em> </em><em>be</em><em> </em><em>said</em><em> </em><em>to</em><em> </em><em>have</em><em> </em><em>a</em><em> </em><em>power</em><em> </em><em>of</em><em> </em><em>1</em><em>,</em><em> </em><em>we</em><em> </em><em>add</em><em> </em><em>the</em><em> </em><em>powers</em><em> </em><em>together</em><em> </em><em>and</em><em> </em><em>multiply</em><em> </em><em>the</em><em> </em><em>coefficients</em>

-9a³

You might be interested in

Physiological response of organisms to their environment is called behaviour ecology

777dan777 [17]

Answer:

true? what are you asking?

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Hayden is building toy cars. Each car needs 4 wheels. How many wheels will Hayden use to build 3 toy cars?

ycow [4]

Answer:

12

Step-by-step explanation:

Three cars each need 4 wheels, so that is...

4 + 4 + 4 wheels, which is 12 wheels

8 0

2 years ago

Pawl,colin and bria are waiters. One night the restaurant earns tips totalling £78.40 the share the tips in the ratio 2.1.5 how

stellarik [79]

Answer: Brian gets $39.2 more over Colin.

Step-by-step explanation:

Given: Total tip amount = £78.40

The ratio of the share of tips for Pawl, Colin and Bria is 2:1 :5.

Let tip amount for Pawl = 2x, tip amount for Colin = x , tip amount for Bria = 5x

Then, 2x+x+5x= 78.40

$\Rightarrow\ 8x = 78.40\\\\\Rightarrow x=\dfrac{78.40}{8 }\\\\\Rightarrow x=9.8$

Tip for Colin = $ 9.8 , Tip for Bria = 5($9.8)= $49

Difference = $(49-9.8) = $ 39.2

Hence, Brian gets $39.2 more over Colin.

4 0

2 years ago

Identify the domain and range of the inverse of f(x) = 0.5^x.

LekaFEV [45]

Answer:

Domain (0, ∞) and Range (-∞, ∞).

Step-by-step explanation:

The domain of f(x) = 0.5^x is all values of x and the range is f(x)>0 as 0.5^x cannot be negative or zero.

In interval form this is Domain is (-∞, ∞) and Range is (0, ∞).

So its inverse has Domain (0, ∞) and Range (-∞, ∞).

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