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3 years ago

Sin40 cos40 / cos 10

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

8 0

Answer:

0.59225502205

Step-by-step explanation:

I guess this might be ok

irina [24]3 years ago

3 0

Answer:

0,487925581

Step-by-step explanation:

guess I tried

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7) What is the area of the figure below?<br> 12 cm<br> 13 cm<br> 20 cm<br> 21 cm

Inessa05 [86]

Answer:

65,520

Step-by-step explanation:

12x13x20x21=64,520

4 0

2 years ago

Priya drew a circle whose area is 25 cm. Dan drew a circle whose diameter is 4 times the radius of Priya's circle. How many time

Vitek1552 [10]

Answer:

400

Step-by-step explanation:

first work out the radius of priya's circle with the equation a = $\pi r^{2}$

$25 = \pi r^{2}$

$\frac{25}{\pi } = r^{2}$

$r = \sqrt{\frac{25}{\pi } }$

we know the diameter of a circle is 2 times the radius so the diameter of priya's circle is 2x $\sqrt{\frac{25}{\pi } }$

this means that if the diameter of dan's circle is 4 times bigger it must be

8x $\sqrt{\frac{25}{\pi } }$

to find the radius of dan's circle we divide the diameter by to 2 to give

4x $\sqrt{\frac{25}{\pi } }$

then use the a= $\pi r^{2}$ equation again

$a= (4 \sqrt{\frac{25}{\pi } })^{2} \pi$

which equals 400

hope that helped

6 0

3 years ago

What is the system of equations that describes the following graph

barxatty [35]

X < = -3
y > = 0
x < = 4.....but all the shading is not here....

I wanna say A is correct....but if A is correct, there would be more shading in ur graph...but it is the closest

8 0

4 years ago

Can someone help me on this ? its Algebra 1 on exponents

Svetradugi [14.3K]

The volume of a rectangular prism is its length times width times height, or algebraically, $V=lwh$ . You may be used to computing volume with numbers, but remember, a variable is a stand-in for a number. So you can solve this in the same way. Substitute $l=x, w= \frac{x}{2},h= \frac{x}{3}$ into the formula for volume. You get $(x)( \frac{x}{2})( \frac{x}{3} )$ , and you multiply these factors together. As you would with ordinary fractions, multiply the numerators and denominators across. You get $\frac{(x)(x)(x)}{(1)(2)(3)} = \frac{x^3}{6}$ . It seems that the book wants you to simplify by bringing the 6 up to the denominator. Recall the rule $x^{-n}= \frac{1}{x^n}$ , if n is non-negative. The opposite applies so that $\frac{1}{6} = 6^{-1}$ . For your final answer, you write $6^{-1}x^3$ . This corresponds to answer choice B.

3 0

3 years ago

Write the equation of the following lines.

kvv77 [185]

Answer:

y=3x

idk

Step-by-step explanation:

I know this is only half an answer, but for a they have the same slope and it's proportional so it has no b value.

8 0

3 years ago

Sin40 cos40 / cos 10​

Sin40 cos40 / cos 10