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Vikentia [17]
3 years ago
15

Diego estimated that he has 200 rocks in his collection. He counted them and he has 160 rocks. What is his percent error?

Mathematics
1 answer:
nexus9112 [7]3 years ago
8 0

Answer:

80%

Step-by-step explanation:

160 of 200

160/200=0.8

move the decimal point over to the right 2 times

then u have 0.80

80%

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Use the formula for interest P=750 r=7% Y=25 A=?
Over [174]

Answer:

2062.50

Step-by-step explanation:

Interest = (Principle x rate x time)/100

Amount = Principle + interest

Principle = 750

Rate = 7%

Time = 25 years

(750 x 7 x 25)/100

= 131250/100

=1312.50

Principle = 750

Interest = 1312.50

Amount = 750 + 1312.50

Amount = 2062.50

7 0
3 years ago
Which sentences contain two words that are related in the same way as the underlined words in the paragraph?
muminat
D is the correct answer
4 0
3 years ago
{x + 4y = 13<br> {x – y = 3
NARA [144]

Answer:

x = 5 and value of y = 2

Step-by-step explanation:

using substitution method

let;

x + 4y = 13...................... equation 1

x - y = 3............................... equation 2

from equation 2

x - y = 3.................................... eqn 2

x = y + 3.......................................... equation 3

put x = y + 3 in equation 1

x + 4y = 13...................... equation 1

y + 3 + 4y = 13

5y = 13 - 3

5y = 10

divide both sides by 5

i.e

5y/5 = 10/5

y = 2

sustitue for y  = 2 in equation 3

x = y + 3.......................................... equation 3

x = 2 + 3

x = 5

therefore the value of x = 5 and value of y = 2

to check if your answwer is correct slot in the value of x and y in any of the equation . e.g

from equation 3

x = y + 3.......................................... equation 3

5= 2 + 3

5 =5....................... proved

3 0
3 years ago
Solve using the appropriate method a-3b=33 <br> b+6=2a
Varvara68 [4.7K]

Answer:

1= -6b=a

Step-by-step explanation:

a-3b=33b+6=2a

+3b  +3b

a=36b+6=2a

-6         -6

a -6=36b=2a

---------------

 -6    -6

a= -6b=2a

This is the work and the answer

6 0
3 years ago
PLEASE HELP I WILL MARK YOU BRAINLIEST AND PLEASE SHOW YOUR WORK.
Feliz [49]

Answer:

Part A: 7.58974359 gallons (I don't know if you needed to round so I kept the full number).

Part B: 8.871794872 gallons

Step-by-step explanation:

Part A's Steps:

First Step: 350 - 54 = 296

Second Step: 296 ÷ 39 = 7.58974359 (Round if you need to)

Part B's Steps:

First Step: 296 + 50 = 346

Second Step: 346 ÷ 50 = 8.871794872

5 0
3 years ago
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