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3 years ago

Please help math 25 pts

Mathematics

2 answers:

meriva3 years ago

7 0

Answer:

Step-by-step explanation:

mr_godi [17]3 years ago

6 0

Your answer should be letter B.

Good luck!!

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Can you help me find the answer? i cant do it and i will get j<br>

Tanya [424]

Answer:

a. 10

b. -4

Step-by-step explanation:

For these problems, since we are given the x, we plug it into the expression and solve.

3(4)-2 [multiply]

12-2 [subtract]

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5(-2)+6 [multiply]

-10+6 [subtract]

-4

3 0

3 years ago

Read 2 more answers

What is the value of the expression 1. (-8.0)?<br> The answer is

Hunter-Best [27]

Answer:

-8

Step-by-step explanation:

(-8.0)=-8

8 0

3 years ago

( 0 0

ch4aika [34]

<h2>D. If subjects knew they were receiving an active treatment, researchers would not have known if any improvement was due to the new medication or to the expectation of <u>feeling </u>better. If the researchers knew which subjects received which treatments, they might have treated one group of subjects differently from the other group.</h2><h2 />

For your question... the answer would be D

7 0

2 years ago

Sum of cubes: (a b)(a2 – ab b2) = a3 b3 Difference of cubes: (a – b)(a2 ab b2) = a3 – b3 Which products result in a sum or diffe

valentina_108 [34]

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

<h3>What is formula of sum of cubes and difference of cubes?</h3>

Formula of sum of cubes and difference of cubes are following

$(a+b)(a^2 -ab +b^2) = a^3+ b^3 \\\\\\(a - b)(a^2+ ab+ b^2) = a^3 - b^3$

(a)

$(x-4) \left(x^{2}+4 x-16\right)\\=(x-4) \left(x^{2}+4 x-4^2\right)\\\\$

by comparison with formula we can say that this is neither sum or nor difference of cubes.

(b)

$(x-1)\left(x^{2}-x+1\right)\\=(x-1)\left(x^{2}-x+1^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

(c)

$(x+1)(x-1)=x^{2}-1^{2}\\$

we can say that this is neither sum nor difference of cube as it's difference of squares.

(d)

$(x+4)\left(x^{2}-4 x+16\right)\\\\(x+4)\left(x^{2}-4 x+4^2\right)$

by comparison with formula this is equal to

$x^{3}+4^{3}\\$

Hence this is sum of cubes

(e)

$(x+4)\left(x^{2}+4 x+16\right)\\(x+4)\left(x^{2}+4 x+4^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

To know more about cubes visit: brainly.com/question/107100

8 0

2 years ago

Solve for x in the equation x2 - 8x+41 - 0

Liula [17]

Answer:

x= 4+5i

Step-by-step explanation:

7 0

3 years ago