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3 years ago

9. Evaluate (-7) -10 ÷ (-28)-10 pls solve fast

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

7 0

Answer:

17/38 or ≈ 0.45

Step-by-step explanation:

(-7) -10 / (-28)-10

= -17 / -38

= 17/38

You can keep the answer in fraction as 17/38 or ≈ 0.45

Hope this help you :3

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Is 16.263548952347... a rational<br> number and why?

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Answer: no it is not

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3 years ago

I need help on this

Mariana [72]

Isolate the w

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Note the equal sign. What you do to one side, you do to the other.

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w/3(3) = 5(3)

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15 is your answer for w

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Find a cubic function with the given zeros.

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Answer:

The correct option is D) $f(x) = x^3 + 2x^2 - 2x - 4$ .

Step-by-step explanation:

Consider the provided cubic function.

We need to find the equation having zeros: Square root of two, negative Square root of two, and -2.

A "zero" of a given function is an input value that produces an output of 0.

Substitute the value of zeros in the provided options to check.

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Therefore, the option is incorrect.

Substitute x=-2 in $f(x) = x^3 + 2x^2 + 2x - 4$ .

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Therefore, the option is incorrect.

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$f(x) = x^3 - 2x^2 - 2x - 4\\f(x) = (-2)^3 - 2(-2)^2 - 2(-2) - 4\\f(x) =-8-8+4-4\\f(x) =-16$

Therefore, the option is incorrect.

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$f(x) = x^3 + 2x^2 - 2x - 4\\f(x) = (-2)^3+2(-2)^2 - 2(-2) - 4\\f(x) =-8+8+4-4\\f(x) =0$

Now check for other roots as well.

Substitute x=√2 in $f(x) = x^3 + 2x^2 - 2x - 4$ .

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Therefore, the option is correct.

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3 years ago

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