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2 years ago

This one as well please

Mathematics

2 answers:

grigory [225]2 years ago

5 0

Answer:

i need points

Step-by-step explanation:

i need points

Volgvan2 years ago

4 0

Okay, so, start by rearranging the problem (because it’s multiplication, you can do that), you get

(sin^2(x)-cos^2(x))*cos(x)*sec(x) + cos^2(x)

cos and sec are inverses, so they cancel each other out leaving you with

sin^2(x)-cos^2(x)+cos^2(x)

The cos^2(x) cancel each other out leaving you with

sin^2(x)

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Calvin's rug covers 1/8 of the floor space in his bedroom how much floor space would be covered if Calvin had four rugs of that

djverab [1.8K]

Answer:

I dont really know what this is asking but i think it would be 4/8 or 1/2

Step-by-step explanation:

Im sorry if its wrong

7 0

3 years ago

What is the area of the base of the cone?

dsp73

Answer:

81 pi centimeters squared

Step-by-step explanation:

Area of circle = πr²

18/2 = 9

π9²

π(9 x 9)

π81

8 0

3 years ago

Read 2 more answers

PLEASE help with these questions??<br> there are 7 of them!<br> Thank you!!

svetlana [45]

We know in these kind of triangles that have a 90 degrees angle, we can do:

${a}^{2} + {b}^{2} = {c}^{2}$

so the first question:

$\sqrt{ {99}^{2} + {20}^{2} } = 101$

and then:

$b = \sqrt{ {17}^{2} - {15}^{2} } = 8$

so , when you want to rationalize , usually you must multiply the irrational factor as 1:

$\frac{ \sqrt{15} }{ \sqrt{15} } = 1$

so , now multiply:

$\frac{3}{ \sqrt{15} } \times \frac{ \sqrt{15} }{ \sqrt{15} } = \frac{3 \sqrt{15} }{15} = \frac{ \sqrt{15} }{5}$

in the next question,we know negative numbers in radical don't have any solution so 2 is correct,

4 0

3 years ago

Can anyone help me please <br> I’ll mark you as a brainliest.<br> NO LINKS

gtnhenbr [62]

Answer is 1.538
Using (x1,y1)(x2,y2)
x1=0
Y1=2
X2=5.2
Y2=10

5 0

3 years ago

Question 10 (2 points)

igomit [66]

Answer:

a = 2

Step-by-step explanation:

To find the missing length we can use the Pythagorean theorem. Also, because it's a right triangle it makes it the perfect candidate!

The Pythagorean Theorem states:

a^2 + b^2 = c^2

Next, we substitute the letters with our given numbers (keep in mind that c is the hypotenuse which is the side facing the right angle)

a^2 + 2.1^2 = 2.9^2

Finally, we solve our equation (hint: use the calculator if needed)

a^2 = 4 (your answer is not final yet. You have to take the square root of both numbers)

a = 2 (Now that's the final answer!)

7 0

3 years ago