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3 years ago

Which number is rational? A.π B.0.36458121… C.0.777... D. √5

Mathematics

2 answers:

Tanzania [10]3 years ago

6 0

The answer is c. 0.777..

RideAnS [48]3 years ago

4 0

The answer is C: 0.777...

Rational numbers are numbers that repeat or end.

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many school districts have a summer-vacation that is 72 days long .what is the percent of the entire year is summer vacation?

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19.73% is 72 days of the year

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2 years ago

Write the percent as a fraction and as a decimal. 372% What is the fraction equivalent?

Ratling [72]

Answer:

fraction form- 372/100

decimal- 3.72

Step-by-step explanation:

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2 years ago

HELP PLEASE solve the right triangle

vodomira [7]

Yo sup??

by Pythagoras theorem we can say that

DE²=3²+2²

=9+4

DE=√13

=3.60 units

angle D=tan-1(2/3)

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angle E=tan-1(3/2)

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2 years ago

What is the answer for this

Eva8 [605]

1). 2x-1=5 (cause x can really be anything) solve the equation to get x=3 or in this case, triangle = 3.

2). Using the info from above, we get the equation 3+x=1.
Solving this equation we get, x (square) =-2.

3). Using all the info from the above problems we get the equation: 3-2*-2=x
Solving that we see that x (star) equals 7.

In conclusion:

Triangle=3
Square=-2
Star=7

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3 years ago

A 10-foot ladder is to be placed Against the side of the building. The base of the latter must be placed in an angle of 72° With

12345 [234]

Answer:

Distance of foot of ladder from building: 37.2 inches

Distance of top of ladder from building's base: 114 inches

Step-by-step explanation:

Please refer to the figure attached in the answer area.

A right angled triangle $\triangle ABC$ is formed by the ladder with the building where hypotenuse is the length of ladder.

Hypotenuse, AC = 10 foot

Also, we are given that angle made by the base of ladder with the ground is $72^\circ$ .

We have to find AB and BC.

$\angle BAC = 72^\circ$

Using trigonometric functions:

$cos \theta= \dfrac{Base}{Hypotenuse}\\cos 72^\circ= \dfrac{AB}{AC}\\\Rightarrow 0.309 = \dfrac{AB}{AC}\\\Rightarrow AB = 10 \times 0.309\\$\approx$ 3.1 foot\\$\approx$ 37.2 inches$

$sin \theta = \dfrac{Perpendicular}{Hypotenuse}\\\Rightarrow sin72^\circ = \dfrac{BC}{AC}\\\Rightarrow 0.95 = \dfrac{BC}{AC}\\\Rightarrow AB = 10 \times 0.95\\$\approx$ 9.5 foot\\$\approx$ 114 inches$

Distance of foot of ladder from building: 37.2 inches

Distance of top of ladder from building's base: 114 inches

8 0

2 years ago