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2 years ago

You read 1 chapter every hour. You read 3 hours after school. How many chapters did you read?

Mathematics

2 answers:

Marat540 [252]2 years ago

6 0

Answer:

3 Chapters?

Step-by-step explanation:

3x1=3 but I am not sure if it is asking if you read during school or not because this seems like a really simple question and may be over thinking it.

anzhelika [568]2 years ago

4 0

Answer:

3 times 1 equals 3

Step-by-step explanation:

If you read one chapter for one hour, you read one chapter. If you read for three hours, you have read three chapters.

Hope this helped, have a great day/night!

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Find the solutions for a triangle with a = 16, c =12, and B = 63º.

maks197457 [2]

Answer:

b. A = 71.6°; C = 45.40°; b =15.0

Step-by-step explanation:

The missing values can be found with the help of the Law of Cosine and properties of triangles:

Side b (Law of Cosine)

$b = \sqrt{a^{2}+c^{2}-2\cdot a \cdot c \cdot \cos B}$

$b = \sqrt{16^{2}+12^{2}-2\cdot (16)\cdot (12) \cdot \cos 63^{\circ}}$

$b \approx 15.022$

Angle A (Law of Cosine)

$\cos A = -\frac{a^{2} - b^{2}-c^{2}}{2\cdot b \cdot c}$

$\cos A = - \frac{16^{2}-15.022^{2}-12^{2}}{2\cdot (15.022)\cdot (12)}$

$\cos A = 0.315$

$A= \cos^{-1} 0.315$

$A \approx 71.639^{\circ}$

Angle C (Sum of internal angles in triangles)

$C = 180^{\circ} - 63^{\circ} - 71.639^{\circ}$

$C = 45.361^{\circ}$

Hence, the right answer is B.

6 0

3 years ago

Identify the pair of angles as corresponding alternate interior, both or neither

Stella [2.4K]

the right answer is 7 and 4 because the angles are between the two lines that are not the transversal and are on diagonal opposite sides of the transversal.

6 0

3 years ago

Read 2 more answers

A)180.48 m2 B)180.48 m C)80.48 m2 D)80.48 m

MissTica

Answer:

80.48m2

Step-by-step explanation:

I think this is right but it may be wrong.

4 0

2 years ago

PLEASE HELP ASAP!!!

arlik [135]

$\text{Plug in 3 to y and solve:}\\\\4(3)^3-20+9(3)^2+(25 \div5)\\\\4(27)-20+9(3)^2+(25 \div5)\\\\4(27)-20+9(9)+(25 \div5)\\\\4(27)-20+9(9)+5\\\\108-20+81+5\\\\88+86\\\\174\\\\\boxed{\text{A). 174}}$

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3 years ago

Read 2 more answers

An advertisement for a circular rug says that the rug has a diameter of 6 feet. Find the relative error of this measurement

Aleonysh [2.5K]

Answer:

1. 8.3%

Step-by-step explanation:

Relative error = absolute error/expected measurement

The expected measurement is given as 6 ft.

Now, the absolute error is usually equal to half of a unit of the measure.

This means the absolute error in this case is ½ × 1 = 0.5 ft

Thus, the exact measurement will be;

6 ± 0.5

Thus;

Relative error = 0.5/6

Relative error = 0.083

Expressing it in percentage gives 8.3%

4 0

2 years ago