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3 years ago

Help I’m stuck and confused

Mathematics

2 answers:

mafiozo [28]3 years ago

5 0

Answer:

-8

Step-by-step explanation:

A triangle is always 180 degrees

(btw I'm not sure if this is addition or multiplication so sorry if i'm wrong!)

65 + 40 = 105

180 - 105 = 75

75 - 83 = -8

EastWind [94]3 years ago

4 0

Answer:

the angle itself is 75 degrees so x=-8

Step-by-step explanation:

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1.)12.5+(-31.5)=<br>2.)-31.91+(-16.7)=<br>3.)1/6+(-11/12)+2/3=<br>4.)29+(-15.7)+(-31.05)=

Xelga [282]

1. = Step 1. Simplify Brackets and you get $12.5 - 31.5$ Step 2. Simplify and you get $-19
$ which is your answer.

2. = Step 1. Simplify Brackets and you get $-31.91-16.7$ Step 2. Simplify and you get $-48.61$

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3 years ago

The mass of a grain of sand is about 103 gram.

KatRina [158]

1 grain = 103g

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Answer:

About 19.417 grains

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3 years ago

1/2 (x-1) - 1/4 (3-x) =2

ololo11 [35]

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2 years ago

Which algebraic expression is represented by the model?

DerKrebs [107]

Answer:

3(2x+2) = 6x + 6

Step-by-step explanation:

Those are algebra tiles, so it is saying (if you read across the top) 2x +2 then if you read down you have 3 units, so the dot means 2x + 2 multiplied by 3

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Algebra tiles are used to demonstrate algebra concepts

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2 years ago

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labwork [276]

Answer:

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Step-by-step explanation:

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2 years ago