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LenKa [72]
2 years ago
10

A rectangle with length of 4/9 foot and a width of 2 feet

Mathematics
2 answers:
antoniya [11.8K]2 years ago
5 0

Answer:

8/9 feet

Step-by-step explanation:

Area=l*w

4/9ft*2ft

4/9*2/1=8/9ft

patriot [66]2 years ago
4 0

Answer:

area of rect = 8/9

Step-by-step explanation:

Area of rect.= (L*W)

Area = (4/9) (2)

Area = (4/9) (2/1)

Area = 8/9

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Why must a given measurement always be reported to the correct number of significant figures.
JulsSmile [24]

The simple reason why it is very important for a given measurement always be reported to the correct number of significant figures is because solved answers usually, frequently and most of the time depend on the number of significant figures in the values used during the calculation

<h3>Significant figures</h3>

There are accurate figures which is used in solving mathematical problems

So therefore, the simple reason why it is very important for a given measurement always be reported to the correct number of significant figures is because solved answers usually, frequently and most of the time depend on the number of significant figures in the values used during the calculation

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2 years ago
A road has a 10% grade, meaning increasing 1 unit of rise to every 10 units of run.
fenix001 [56]

The grade is the ratio of rise to run, i.e. the slope aka the tangent.

\tan \theta = \dfrac{1}{10}

\theta = \arctan 0.1 \approx 5.711^\circ

Answer: (a) 6 degrees

For part b, the road is the hypotenuse c of a right triangle whose tangent of the small angle is 1/10.    The height h or rise is the side opposite the small angle.

\sin\theta = \dfrac h c

h = c \sin \theta

We could just take the sine of the angle we got but let's get it from the tangent exactly.

\cos^2 \theta + \sin ^2 \theta = 1

Dividing by squared cosine

1 + \tan ^2 \theta = 1/\cos^2 \theta = 1/(1- \sin^2 \theta)

(1- \sin^2 \theta) = 1/(1 + \tan^2 \theta)

\sin^2 \theta = 1 - 1/(1 + \tan^2 \theta)

\sin^2 \theta = 1 - 1/(1 + (1/10)^2) = 1-1/(101/100) = 1/101

h = c \sin \theta = 2 \sqrt{1/101} \approx 0.199

Answer: (b) Rise of 0.199 km

6 0
4 years ago
What is the difference of 1 and 1/3 and 5/6??
Rudiy27

Answer:

By using cross multiplication method, 1/2 is the difference between two fractions 5/6 and 1/3.

Step-by-step explanation:

4 0
3 years ago
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A triangle and the coordinates of its vertices is shown in the coordinate plane below. Enter the area of this triangle in square
kupik [55]

Answer:

22 units²

Step-by-step explanation:

1/2b*h=area

You can either count the units or use the distance formula.

d =  \sqrt{ {(x2 - x1)}^{2} +  {(y2 - y1)}^{2}  }

b = 4 units

h = 11 units

area = (1/2*4)*11 = 22 units²

6 0
4 years ago
Is it positive, negative, or zero?
marta [7]

Answer:

Negative

Step-by-step explanation:

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