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MA_775_DIABLO [31]
2 years ago
6

A survey of Ghasi's customers showed that 1,200 of the customers buying yarn would buy bamboo yarn. In the first month, 725 cust

omers actually bought bamboo yarn. What was the percent error in the survey estimate of the number of people buying bamboo yarn? Round to the nearest tenth.
Mathematics
2 answers:
Arturiano [62]2 years ago
5 0

Answer:

<h2>40%</h2>

Step-by-step explanation:

Step one:

given data

expected customers= 1200

actual customers= 725

the percent error= (actual-expected)/expected

substituting the given values we have'

%error=725-1200/1200

%error=475/1200

%error=0.395

To the nearest tenth we have 0.4

%error=0.4*100

%error=40%

Hence the percent error is 40%

hjlf2 years ago
4 0

Answer:

40%

Step-by-step explanation:

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The triangles are similar. Find the value of x. Round to the nearest tenth.
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Step-by-step explanation:

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2 years ago
A specific park is rectangular-shaped and has a 3 mile-perimeter. The length is 4 times the width. What are the dimensions of th
avanturin [10]

Answer:

The length of the rectangular park is 1.2\ mi and the width of the rectangular park is 0.3\ mi

Step-by-step explanation:

Let

x ----> the length of the rectangular park

y ---> the width of the rectangular park

we know that

The perimeter is equal to

P=2(x+y)

P=3\ mi

so

3=2(x+y) -----> equation A

x=4y ----> equation B

substitute equation B in equation A and solve for y

3=2(4y+y)

3=10y

y=0.3\ mi

Find the value of x

x=4(0.3)=1.2\ mi

therefore

The length of the rectangular park is 1.2\ mi and the width of the rectangular park is 0.3\ mi

8 0
2 years ago
How do you do this question?
Gemiola [76]

Answer:

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

Step-by-step explanation:

∫ 15 sin(√(at)) dt

Use substitution:

If x = √(at), then:

dx = ½ (at)^-½ (a dt)

dx = a / (2√(at)) dt

dx = a/(2x) dt

dt = (2/a) x dx

Plugging in:

∫ 15 sin x (2/a) x dx

30/a ∫ x sin x dx

Integrate by parts:

If u = x, then du = dx.

If dv = sin x dx, then v = -cos x.

∫ u dv = uv − ∫ v du

= 30/a (-x cos x − ∫ -cos x dx)

= 30/a (-x cos x + ∫ cos x dx)

= 30/a (-x cos x + sin x + C)

Substitute back:

30/a (-√(at) cos(√(at)) + sin(√(at)) + C)

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

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3 years ago
Roadstone Limited can resurface 7/8km of a road in a day. How many days will it take
wariber [46]

Answer:

<h2>16 days</h2>

Step-by-step explanation:

Let x be the number of days that it will take.

7/8 km per 1 day

14 km    per x day

We have to solve the equation:

\frac{x}{1} =\frac{14}{\left( \frac{7}{8} \right)  }

\Longrightarrow x=14\times \frac{8}{7} =2\times 8=16

7 0
1 year ago
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