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Nadusha1986 [10]
3 years ago
10

Solve if h=5 and y=8 7hy^2+y

Mathematics
1 answer:
dybincka [34]3 years ago
5 0

Step-by-step explanation:

h = 5

y = 8

=> 7hy² + y

=> 7 × 5 × 8² + 8

=> 35 × 64 + 8

=> 2240 + 8

=> 2248

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(3cosx-4sinx) + (3sinx+4cosx) = 5
Ksenya-84 [330]
(3 cos x-4 sin x)+(3sin x+4 cos x)=5
(3cos x+4cos x)+(-4sin x+3 sin x)=5
7 cos x-sin x=5
7cos x=5+sin x
(7 cos x)²=(5+sinx)²
49 cos²x=25+10 sinx+sin²x
49(1-sin²x)=25+10 sinx+sin²x
49-49sin²x=25+10sinx+sin²x
50 sin² x+10sinx-24=0

Sin x=[-10⁺₋√(100+4800)]/100=(-10⁺₋70)/100
We have two possible solutions:
sinx =(-10-70)/100=-0.8
x=sin⁻¹ (-0.8)=-53.13º      (360º-53.13º=306.87)

sinx=(-10+70)/100=0.6
x=sin⁻¹ 0.6=36.87º

The solutions when  0≤x≤360º are:  36.87º and 306.87º.


3 0
2 years ago
1) stacey is selling tickets to the school play the tickets are $8 for adults and $5 for children . she sell twice as many ticke
Lapatulllka [165]
2) 25/48 All you do is multiply both.
1) she sold 5 children and 10 adult. 5 *5 equals 25. You double 5 to get twice as many tickets for adults and get 10. 8 *10 equals 80. 80 + 25= $105
5 0
3 years ago
Anyone know the answer?
jonny [76]
Answer is 4 so C for you. I just did this with my brother! Hope this helped.
8 0
2 years ago
Read 2 more answers
Please helpp quick! i have no idea what the answer is
aleksley [76]

Answer:

C

Step-by-step explanation:

point-slope equation is y-y1=m(x-x1)

y1=2

x1=6

m=(-5/7)

so the equation is y-2=-5/7(x-6)

hope this helps :3

5 0
3 years ago
In a class 1/6 of a children are girls there are five girls in the class how many boys are there in the class
Alika [10]
<h2>Hope it is helpfully.</h2><h3>Have a nice day.</h3>

6 0
2 years ago
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