2 years ago

What is -2 1/3 - (-5)=

Mathematics

1 answer:

Archy [21]2 years ago

6 0

Answer:

$\frac{8}{3}$

Step-by-step explanation:

$- 2 \frac{1}{3} - ( - 5)$

convert mixed fraction into improper fraction.

$- \frac{7}{3} + ( - 5)$

calculate the sum of the fraction:

$\frac{8}{3}$

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Answer:

none of the answer above

the answer is X < -1/4

Step-by-step explanation:

7x-3x<1-2

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x<-1/4

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What is the sum of a 56-term arithmetic sequence where the first term is 6 and the last term is 391?

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An isosceles triangle ABC has legs of length 24 and a vertex angle that measures 36º . Determine the length of its base, BC , to

iris [78.8K]

Answer: $BC=14.8$

Step-by-step explanation:

By definition, an Isosceles triangle has two equal sides and its opposite angles are congruent.

Observe the figure attached, where the isosceles triangle is divided into two equal right triangles.

So, in this case you need to use the following Trigonometric Identity:

$sin\alpha =\frac{opposite}{hypotenuse}$

In this case, you can identify that:

$\alpha =\angle BAD=\angle CAD=18\°\\\\opposite=BD=CD=x\\\\hypotenuse=AB=AC=24$

Substituting values, and solving for "x", you get:

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