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4 years ago

11

Felix reported that the coldest day on record for his town was five times colder than yesterday’s temperature -4°C what was the

temperature of the coldest day on record in Felix’s town

1 answer:

DerKrebs [107]4 years ago

7 0

Answer:

-20 C

Step-by-step explanation:

-5x4=x20

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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

<u>Find the value of AC</u>

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

<u>Find the value of BC</u>

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

<u>Find the value of BD</u>

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

<u>the answer is</u>

the length of BD is 11.93 units

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Vinil7 [7]

Answer:

1st option is correct

Step-by-step explanation:

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Find the slope of the line,<br><br> O 0-<br> O 5<br> O 2<br> O None of the above

Usimov [2.4K]

Answer:

none of the above I belive

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3 years ago

How many yards are in 2 millimeters

AleksandrR [38]

In 1 millimeter, there are 0.00109361
So in 2 mm, there are 2 × 0.00109361 = 0.00218722 yards

or do proportions:
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Cross multiply:

2 × 0.00109361 = y
0.00218711 = y

0.00218722 yards are in 2 millimeters.

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Answer:

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