All categories

3 years ago

Explain and solve .hhhhgghgfghhg

Mathematics

1 answer:

Aleks [24]3 years ago

5 0

Answer:

mark as brainliest and drop some thanks!!!

You might be interested in

Solve for the variables and show work please

olga nikolaevna [1]

Answer:

e=30

k=15/2

h=90

Step-by-step explanation:

3e=60

e=30

30+4k=60

4k=30

k=15/2

15/2+2h=30

2h=45/2

h=90

7 0

3 years ago

Which angle must also measure 85°? _2 _5 _11 _12

Semmy [17]

_11 is the answer Fr

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=what%20%5C%3A%20is%20%5C%3A%204%20%5Cdiv%206%20-%2010%20%20%5C%5C%20" id="TexFormula1" title="

amm1812

The answer is -28/3 or 9.33333333333 have a great day also could I get brainliest

6 0

3 years ago

Which expression represents the composition [g-f. h](x) for the functions below?

ss7ja [257]

Answer:

the composition of the expression [g-f.h](x) is g(x)=5x2

7 0

3 years ago

Given cosα = −3/5, 180 < α < 270, and sinβ = 12/13, 90 < β < 180

torisob [31]

I got

$- \frac{6 3}{65}$

What we know

cos a=-3/5.

sin b=12/13

Angle A interval are between 180 and 270 or third quadrant

Angle B quadrant is between 90 and 180 or second quadrant.

What we need to find

Cos(b)

Cos(a)

What we are going to apply

Sum and Difference Formulas

Basics Sine and Cosines Identies.

1. Let write out the cos(a-b) formula.

$\cos(a - b) = \cos(a) \cos(b) + \sin(a) \sin(b)$

2. Use the interval it gave us.

According to the given, Angle B must between in second quadrant.

Since sin is opposite/hypotenuse and we are given a sin b=12/13. We. are going to set up an equation using the pythagorean theorem.

${12}^{2} + {y}^{2} = {13}^{2}$

$144 + {y}^{2} = 169$

$25 = {y}^{2}$

$y = 5$

so our adjacent side is 5.

Cosine is adjacent/hypotenuse so our cos b=5/13.

Using the interval it gave us, Angle a must be in the third quadrant. Since cos is adjacent/hypotenuse and we are given cos a=-3/5. We are going to set up an equation using pythagorean theorem,

$( - 3) {}^{2} + {x}^{2} = {5}^{2}$

$9 + {x}^{2} = 25$

${x}^{2} = 16$

$x = 4$

so our opposite side is 4. sin =Opposite/Hypotenuse so our sin a =4/5.Sin is negative in the third quadrant so

sin a =-4/5.

Now use cosine difference formula

$- \frac{3}{5} \times \frac{5}{13} + - \frac {4}{5} \times \frac{12}{13}$

$- \frac{15}{65} + ( - \frac{48}{65} )$

$- \frac{63}{65}$

Hope this helps

6 0

3 years ago

Explain and solve .hhhhgghgfghhg​

Explain and solve .hhhhgghgfghhg