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mars1129 [50]
2 years ago
12

20 POINTS IF YOU HELP ME

Mathematics
2 answers:
Naily [24]2 years ago
6 0
I’m not sure but I think u can just subtract 2-1,65 and than multiply by 100
LenaWriter [7]2 years ago
5 0

Answer:

21%

Step-by-step explanation:

to find percent error you subtract the theoretical (actual) from the experimental, then divide by the theoretical; what you get is a decimal so if you multiply it by 100 you will get the percent

theoretical = 2.0 grams

experimental = 1.65 grams

(1.65 - 2.0) / 1.65 = -0.35/1.65 = -0.21

0.21 x 100 = 21 %

the scale has a 21% probability of being inaccurate

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Can someone help me 10 points
Elanso [62]

The two angles form a right triangle which is 90 degrees.

Add the two to equal 90:

3x-8 + 4x = 90

simplify:

7x-8 = 90

Add 8 to both sides:

7x = 98

Divide both sides by 7:

x = 14

3 0
3 years ago
If the shaded sector is 75m what would the area be of the circle? A. 30 B. 36 C.144 D. 108
fredd [130]
The correct answer is letter B
8 0
3 years ago
What is m∠ MHJ?<br> 35<br> 50<br> 72.5<br> 92.5
NNADVOKAT [17]

Answer:

50

Step-by-step explanation:

MHJ and LHK are vertical angles, which means they are equal

2x-20 = x+15

Subtract x from each side

2x-20-x = x+15-x

x-20 = 15

Add 20 to each side

x-20+20 = 15+20

x = 35

We want to find MHJ

MHJ =2x-20

        =2(35) -20

       = 70 -20

      = 50

3 0
4 years ago
Read 2 more answers
The width of a rectangle is 7y -7.5 feet and the length is 7.5y + 8 feet. Find the perimeter of the rectangle
galben [10]

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Combine like terms:

29y+1

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5 0
3 years ago
What is 3 x 89 - 394 +35.32 x 34/289 x 100,000,000 - 3832 / 24213
Whitepunk [10]
415529284.606 is the correct answer
3 0
3 years ago
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