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3 years ago

10

a rectangular field is 45 feet wide and is enclosed by 210 feet of fencing what is the area of the field in square feet

1 answer:

Helen [10]3 years ago

7 0

Find the length of the field first. To do this, write a formula for the perimeter, P, of the field: P = 210 ft = 2(45 ft) + 2L.

Then 2L = 210 - 90 = 120, and L = 60 (feet).

The area of the field is thus WL = (45 ft)(60 ft) = 2700 sq ft

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For the weight of the box that she measured, Beatriz determined the margin of error as 23.5 pounds to 24.5 pounds. What was the

Marat540 [252]

The greatest possible error is 0.5lb.

The GPE is one half of one unit, no matter which unit you're using or the margin of error you have.

Since we are using pounds in this case, the GPE is 0.5 pounds.

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3 years ago

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The relative frequency distribution of the number of phobias reported by a hypothetical sample of 500 college students is given

goldenfox [79]

Answer:

a. 0.48

b. 0.14

c. 0.47

Step-by-step explanation:

Data provided in the question

0 - 2 0.48

3 - 5 0.26

6 - 8 0.12

9- 11 0.09

12- 14 0.05

Based on the above information

a. The probability for fewer than three phobias is

= P( x < 3)

= 0.48

b. The probability for more than eight phobias is

= P( x >8)

= 0.09 + 0.05

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c. Probability between 3 and 11 phobias is

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3 years ago

X/3-10=-12<br> p/4+10=14

borishaifa [10]

X/3-10=12
x/3=-2
x=-6

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3 years ago

Is anyone able to give a step by step process to this?

Thepotemich [5.8K]

Answer:

The value of y is 3 cm.

Step-by-step explanation:

Given,

Perimeter of triangle = $29\ cm$

Solution,

Lets redraw the triangle with nomenclature ABC, given in the attachment.

∴P(ΔABC) = 29 cm (P stands for perimeter)

Length of AB = $y+9$

Length of BC = $2y$

Length of CA = $4y-1$

Now, we all know that the perimeter of a triangle is sum of all the three sides of triangle.

P(ΔABC) = Length of AB+Length of BC+Length of CA

On substituting the values, we get;

$(y+9)+2y+(4y-1)=29\\y+2y+4y+9-1=29\\7y+8=29\\7y=29-8\\7y=21\\y=\frac{21}{7} =3\ cm$

Length of AB = $y+9=3+9=12\ cm$

Length of BC = $2y=2\times3=6\ cm$

Length of CA = $4y-1=4\times3-1=12-1=11\ cm$

Hence the value of y is 3 cm.

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3 years ago

The Pythagorean Identity states that:

Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

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(√3/2)²+(cosx)² = 1

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(cosx)² = 1/4

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cos x = 1/2

Hence the value of cosФ is 1/2

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3 years ago