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slava [35]
2 years ago
15

Please help me grades are do today

Mathematics
1 answer:
11111nata11111 [884]2 years ago
3 0

Answer:

28

Step-by-step explanation:

sin=\frac{opp}{hyp}

cos = \frac{adj}{hyp}

cos^{-1}\left(\frac{45}{51}\right)

which is 28.07 degree

sin\left(28.07\right)=\frac{x}{51}

x= 23.99

23.99+4=h=28

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Find the roots of the equation below. X^2 - 6 + 9 = 0
masya89 [10]

Answer: no real solution


Step-by-step explanation:

X^2 - 6 + 9 = 0

Step 1: Simplify both sides of the equation.

x^2+3=0.

Step 2: Subtract 3 from both sides.

x^2+3−3=0−3    

x^2=−3.

Step 3: Take square root. x=±√−3

answer is No real solutions.



6 0
3 years ago
Solve the follwing please:
myrzilka [38]

\dfrac{(-9-11)/(-4)}{-7^2+(11 \times 2^2)}\\\\=\dfrac{(-20)/(-4)}{-49+44}\\\\=\dfrac{5}{-5}\\\\=-1

3 0
2 years ago
Estimate then ubtract 4 3/8 1 5/8
timofeeve [1]

Step-by-step explanation:

3/8 = 0.375

5/8 = 0.625

4.375 - 1.625

= 2.75

3 0
3 years ago
PLEASE SOMEONE HELP ME ILL MARK BRAINLESS AND PLEASE EXPLAIN AHHHH HELP
BARSIC [14]

Step-by-step explanation:

The 2 lines are parallel to each other which means that angle #5 and 93° are alternate interior angles so by definition, they are equal. Hence angle 5 = 93°

8 0
2 years ago
Find the value of z ANSWER IS NOT 12. NO LINKS OR SPAMS! THANK YOU!!!!!!​
alexgriva [62]

Answer:

12√3

Step-by-step explanation:

sin 30 =1/2

sin30=a/24. sin=opposit side/Hypotenuse

a is the opposite side of 30

1/2=a/24

a=12

now take pythagoras theroem

24^2=z^2+12^2

576=z^2+144

z^2=576-144

z^2=432

z=√432

z=√144*3

z=12√3

4 0
3 years ago
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