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2 years ago

What is the answer of 11-(-2) 14?

Mathematics

1 answer:

blondinia [14]2 years ago

4 0

11-(-2)14=
11-((-2).14)=
11-(-28)=11+28=39

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Which products result in a difference of squares or a perfect square trinomial? Check all that apply.

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2 years ago

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Three siblings are born on the same date in consecutive years.

Oduvanchick [21]

Answer:

Step-by-step explanation:

15+14+13=42

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2 years ago

the weight of meteorite A is 7 times the weight of meteorite B. if the sum of their weight is 176 tons, find the weight of each

dedylja [7]

Answer:

A= 154, B=22

Step-by-step explanation:

if meterorite A is 7 times bigger than B, then our equation would be 7B+B=176. This gives us B=22. Then you multiply 22 times 7 to get your A value.

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2 years ago

Solve 2x^3+7x^2-2x-1=o

Mashcka [7]

Answer:

$x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}$

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

$2x^3+7x^2-2x-1$ = 0

We have to find all the factors of a and d and put them in a fraction

$a=2\\d=-1\\\frac{1}{1,2}$

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

So now the equation is $(2x-1)(x^2+4x+1)$

Solve the second half of this equation using the quadratic formula to get

$\sqrt{3}-2$ and $-\sqrt{3}-2$

We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

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2 years ago

Which is the equation of a line that has a slope of -2/3

Lesechka [4]

Answer:

The second one

Step-by-step explanation:

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2 years ago