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Mrrafil [7]
3 years ago
8

The specification for the length of a bolt is 4.75 inches. A machinist makes a bolt that is 4.769 inches long. What is the perce

nt error of the bolt’s length?
Mathematics
1 answer:
Serhud [2]3 years ago
5 0

Answer:

0.4%.

Step-by-step explanation:

Given that,

The length of a bolt is 4.75 inches and a machinist makes a bolt that is 4.769 inches long.

We need to find the percent error of the bolt’s length. The percentage error in the any value is given by :

\%=\dfrac{|\text{original value-calculated value}|}{\text{original value}}\times 100\\\\=\dfrac{4.75 -4.769 }{4.75}\times 100\\\\=0.4\%

So, the percentage error of the bolt's length is 0.4%.

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Minimum point of the quadratic x^2+6x-2
WITCHER [35]

Answer:

(-3,-11)

Step-by-step explanation:

Compare the given quadratic equation with the general quadratic equation.

a=1, b=6 and c=-2

x=-\dfrac{(6)}{2(1)}\\=-3

Subsitute -3 for x in given quadratic equation.

y=(-3)^2+6(-3)-2\\=9-18-2\\=-11

The minimum point is (-3,-11).

3 0
3 years ago
In a certain city, 80 percent of the households have cable television and 60 percent of the households have videocassette record
alexandr1967 [171]

Answer:

60,000

Step-by-step explanation:

Let the total people in the household be 100%

If 80 percent of the households have cable television, 60 percent of the households have videocassette recorders and the number of households that have both cable television and videocassette recorders is 'x' percent. The number of households having ONLY cable television will be 80-x while households having ONLY videocassette will be 60-x.

To get x, we will have;

80-x + 60-x + x = 100

140-x = 100

x = 140-100

x = 40

This shows that 40% of the households have both cable television and videocassette.

If there are 150,000 households in the city, then the number of households that have both cable television and videocassette recorders could be 40% of 150,000

= 40/100 × 150,000

= 60,000

Number of households that owns both television and videocassette could be from 60,000.

3 0
4 years ago
Read 2 more answers
Find z within the problem.
irinina [24]

Answer:

  z = √35

Step-by-step explanation:

In this geometry, all of the right triangles are similar, so corresponding sides are proportional.

  long side / hypotenuse = 5/z = z/(2+5)

  z² = 5(7) = 35

  z = √35

7 0
2 years ago
What is 52,689,000 in scientific notation?
Dafna11 [192]

Answer:

5.2689 × 107

Step-by-step explanation:

Its been a long time since I did scientific notation but  theres your answer.

Wish i could of made it clearer but i'm still learning

Hope it helps

4 0
3 years ago
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Breck Hardware purchased from Black and Decker 10 Dust Busters for $24.95 each. What should Breck charge its customers for each
Sophie [7]
To get the answer you pretty much take 24.95x.395/ Then add that answer to 24.95.
4 0
4 years ago
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