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2 years ago

A number, x, rounded to 2 significant figures is 1300Write down the error interval for x.

Mathematics

1 answer:

nikitadnepr [17]2 years ago

7 0

Answer:

$[1250,1350)$ .

Step-by-step explanation:

It is given that a number, x, rounded to 2 significant figures is 1300.

It is possible if,

1. The value of x is greater than of equal to 1250 and less than or equal to 1300.

i.e., $1250\leq x\leq 1300$ ...(1)

2. The value of x is greater than of equal to 1300 and less than 1350.

i.e., $1300\leq x$ ...(2)

On combining (1) and (2), we get

$1250\leq x < 1350$

1350 is not included in the error interval for x.

Interval notation is $[1250,1350)$ .

Therefore, the error interval for x is $[1250,1350)$ .

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Answer:

Total amount pay after 3 week = $147.5

Step-by-step explanation:

Given:

Amount of loan taken = $125

Amount interest per $100 = $6 per week

Find:

Total amount pay after 3 week

Computation:

Amount of interest per week = 125[6/100]

Amount of interest per week = $7.5 per week

Amount of interest in three week = 3 x Amount of interest per week

Amount of interest in three week = 3 x 7.5

Amount of interest in three week = $22.5

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2 years ago

The number of nails in the bucket is 50 less than twice a number of screws. Together, there are 400 fasteners in the bucket. How

kati45 [8]

Answer:

There are 250 nails and 150 screws in the bucket.

Step-by-step explanation:

Let Number of nails in bucket be x.

Also Let number of screws in the bucket be y.

Together, there are 400 fasteners in the bucket.

Hence the equation can be framed as;

$x+y = 400 \ \ \ \ equation \ 1$

Also Given:

The number of nails in the bucket is 50 less than twice a number of screws.

Hence the equation can be framed as;

$x= 2y -50$

Substituting the value of x in equation 1 we get;

$x+y=400\\2y-50+y=400\\3y=400+50\\3y=450\\y= \frac{450}{3}=150$

Now we have value of y we will substitute in equation 1 we get;

$x+y =400\\x+150 =400\\x =400-150\\x=250$

Hence there are 250 nails and 150 screws in the bucket.

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2 years ago

Adele has 3 64-ounce cartons of orange juice and 3 48-ounce cans of apple juice. How much juice does she have altogether?

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I would use multiplication and addition.
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1 year ago

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Sladkaya [172]

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2 years ago

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kaheart [24]

Answer:

The correct option is four.

Step-by-step explanation:

The associative property implies that the values are added however we want, i.e. the numbers can be grouped in any way and the answer would still be the same.

The associative property of addition is:

$(a+b)+c=a+(b+c)$

The expression provided is:

(13 + 15 + 20) + (20 + 47 + 18)

The answer provided by four students are:

Jeremy : (20 + 13 + 15) + (20 + 47 + 18)

Layla : (20 + 47 + 18) + (13 + 15 + 20)

Keith : (13 + 20) + (20 + 47 + 18) + 15

Melinda : (13 + 15 + 20 + 20) + (47 + 18)

So, all the four students correctly applied only the associative property to rewrite the expression.

The correct option is four.

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1 year ago

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A number, x, rounded to 2 significant figures is 1300Write down the error interval for x.​

A number, x, rounded to 2 significant figures is 1300Write down the error interval for x.