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kherson [118]
3 years ago
15

Which addition problem is equivalent to -1.4 - (-0.5)

Mathematics
1 answer:
Dmitrij [34]3 years ago
8 0

Answer:

-0.9 or 0.7

Step-by-step explanation:

1. -1.4--0.5  

or

2. -1.4x-0.5

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30 POINTS HELP ANSWER ASAP AND EXPLAIN STEP BY STEP HOW TO SOLVE The two non-parallel sides of an isosceles trapezoid are each 7
weeeeeb [17]
See diagram
I wrote that the degrees are 70 each because it is isocolese and 140/2=70


a.
to solve for the diagonal, I'm going to use trig to find the height and the base then use pythagorean theorem to find the diagonal

so
see I've drawn an auxiliry line to make a right triangle on the leftmost side
so
we want to find the height and base
sin(70°)=h/7
so 7sin(70°)=h≈6.57785

cos(70°)=base/7
so 7cos(70°)=base≈2.39414

now
the entire long base is 22, so that big triangle with the diagonal as the hyptonuse is 22-2.39414=19.6059
use pythagorean theorem, like 6.57785²+19.6059²=diagonal²
we get that the diagonal is about 20.68ft




b.
we got that the base was 7cos(70°)
2 of those bases so 22-14cos(70°)=17.2117ft or rounded 17.21ft




a. 20.68ft
b. 17.21ft

3 0
4 years ago
Read 2 more answers
How much would 55 pounds on mercury weight on earth
azamat
144.74 pounds, I rounded the answer. to get this you would divide 55 by .38 .
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3 years ago
What must be true of PQ?
yulyashka [42]
Interesting question
Usually when you look at something like that construction, you think that AB has been bisected by PQ and that the two segments are perpendicular. They are perpendicular but nowhere is that stated. So the answer is C because all the other answers are wrong. 

PQ is congruent AB is not correct. As long as the arcs are equal and meet above and below AB there is no proof of congruency. In your mind widen the compass legs so that they are wider than AB and redraw the arcs. You get a larger PQ, but it has all the original properties of PQ except size.

PQ is not congruent to AQ. How would you prove conguency? You'd have to put both lines into triangles that can be proved congruent. It can't be done.

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8 0
3 years ago
What is an itrational number between 5 and 7
wariber [46]
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An irrational number is any real number that cannot be expressed as a simple fraction or terminating decimals. There are many answers to this question.
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Answer:

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