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3 years ago

The Area of the Rectangle

Mathematics

1 answer:

pshichka [43]3 years ago

3 0

Answer:

450 I believe is correct

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Write each fraction as a percent and fraction equivalent. 1) 0.53 2)1.07

Black_prince [1.1K]

53%
$\frac{53}{100}$
107%
$\frac{107}{100}$

3 0

3 years ago

Convert 20 mm into km

andrew-mc [135]

Answer:

Step-by-step explanation:

1 km = 1,000 m = 100,000 cm = 1,000,000 mm

1 mm is millionth part of 1 km

1 mm = 0.000001 km

20 mm = 0.00002 km

3 0

2 years ago

Consider a triangle with angles 30o-60o-90o, with hypotenuse of length 2. Calculate the lengths of the other 2 sides and store t

kumpel [21]

Answer:

1.00 and 1.73

Step-by-step explanation:

1) Calculating the 1st and the 2nd leg using trigonometric function sine:

$sin (30^{0})=\frac{c}{2}\Rightarrow \frac{1}{2}=\frac{c}{2}\Rightarrow 2*\frac{1}{2}=2*\frac{c}{2}\Rightarrow c=1\\sin(60^0)=\frac{b}{2}\Rightarrow \frac{\sqrt{3}}{2}=\frac{b}{2}\Rightarrow b=\sqrt{3}\Rightarrow\: b\approx \:1.73$

Once one leg is found there is another way to find the other leg, using Pythagorean Theorem too.

$a^{2}=b^{2}+c^{2}\Rightarrow 2^{2}=b^{2}+1^{2}\Rightarrow 4-1=b^{2}\Rightarrow b=\sqrt{3} b\approx 1.73$

Sides

a hypotenuse: 2.00

-------------------------------

b leg: 1.73

--------------------------------

c leg: 1.00

--------------------------------

4 0

3 years ago

Can anyone help me with these math problems?

Sunny_sXe [5.5K]

Sure. I'm not sure if I like the computer aided instruction.

$\dfrac{\tan A}{\sec A} = \dfrac{ \sin A / \cos A }{1 / \cos A} = \dfrac{\sin A \cos A}{\cos A} = \sin A$

so in the first block they want sin A and in the second block sin A cos A

Show

$\sec \theta \cot \theta \sin \theta =1$

Proof,

$\sec \theta \cot \theta \sin \theta =\dfrac{1}{\cos \theta} \cdot \dfrac{\cos \theta}{\sin \theta} \cdot \sin \theta = 1$

Looks like the box is cos θ

4 0

3 years ago

Please show steps on how to solve <br> log7 -2b-9=-6

NeTakaya

Answer: b= - -log10(7)+3/2

Step-by-step explanation: log 10 (7) -2b-9=-6 : b= - -log10(7)+3/2 (Decimal : b = -1.07745...)

so these are the steps how I got it I did log 10 (7)-2b-9=-6 subtract log 10 (7) -9 from both sides log 10 (7)-2b-9-(log10(7)-9)=-6-(log 10 (7) -9)

Simplify -2b= -log10(7)+3

Divide both sides by -2 -2b/2= - log 10(7)/-2+ 3/-2 if you simplify it should give you b= - -log10(7)+3/2 that should be your answer but i'm not sure those I think that's how you do it let me know if you got it right bye!

6 0

3 years ago