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3 years ago

Evaluate e - 1/2d when e = 15 and f = 2. 10 E ERSTE

Mathematics

1 answer:

Aleksandr [31]3 years ago

3 0

Answer:

The answer is 14.

Step-by-step explanation:

E= 15

F= 2

The setup would be;

15- 1/2(2)

Multiply 1/2 and 2. Which is 1.

Next you subtract 15-1.

Then there you get 14.

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Mr. Rivona bought 5 pounds of<br>bananas for $0.45 per pound<br>How much did she spend in all

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Answer:

2.25

Step-by-step explanation:

5*.45=2.25

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3 years ago

What is the answer (9+43-2)2-10-5 to the 2nd power

mylen [45]

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3 years ago

2x^3-x^2+x-2 factorize

bekas [8.4K]

Answer:

$(x-1)(2x^2+x+2)$

Step-by-step explanation:

Factorize:

$f(x)=2x^3-x^2+x-2$

<u>Factor Theorem</u>

If f(a) = 0 for a polynomial then (x - a) is a factor of the polynomial f(x).

Substitute x = 1 into the function:

$\implies f(1)=2(1)^3-1^2+1-2=0$

Therefore, (x - 1) is a factor.

As the polynomial is cubic:

$\implies f(x)=(x-1)(ax^2+bx+c)$

Expanding the brackets:

$\implies f(x)=ax^3+bx^2+cx-ax^2-bx-c$

$\implies f(x)=ax^3+(b-a)x^2+(c-b)x-c$

Comparing coefficients with the original polynomial:

$\implies ax^3=2x^3 \implies a=2$

$\implies (b-a)x^2=-x^2 \implies b-2=-1 \implies b=1$

$\implies -c=-2 \implies c=2$

Therefore:

$\implies f(x)=(x-1)(2x^2+x+2)$

Cannot be factored any further.

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2 years ago

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In a class of pupils, 11 play the flute and piano.

Natali5045456 [20]

Answer:

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Step-by-step explanation:

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3 years ago

Harry is at the store buying cheese. The cost of the cheese

DaniilM [7]

Answer: $2

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2 years ago