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ira [324]
3 years ago
7

I need help with this math, it is hard and I’m not good at it. I don’t understand this math so plz help me.

Mathematics
2 answers:
klasskru [66]3 years ago
6 0
142 hope I’m right this time
iragen [17]3 years ago
5 0
142 good luck



Explanation :
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Prove that the max and min values of asinX + bcosX are respectively sqrt.(a^2+b^2) and -sqrt(a^2+b^2) .
strojnjashka [21]
The solution to the problem is as follows:
let y = asinx + bcosx 
<span>
dy/dx = acosx - bsinx </span>
<span>
= 0 for max/min </span>
<span>
bsinx = acosx </span>
<span>
sinx/cosx = a/b </span>
<span>
tanx = a/b </span>
<span>
then the hypotenuse of the corresponding right-angled triangle is √(a^2 + b^2) </span>

<span>the max/min of y occurs when tanx = a/b </span>
<span>
then sinx = a/√(a^2 + b^2) and cosx = b/√(a^2 + b^2) </span>
<span>
y = a( a/√(a^2 + b^2)) + b( b/√(a^2 + b^2)) </span>
<span>
= (a^2 + b^2)/√(a^2 + b^2) </span>
<span>
= √(a^2 + b^2)</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
6 0
2 years ago
Employees at Standard Storage are in the ratio of 2 women to 7 men. If there are 490 men employed,
PilotLPTM [1.2K]

Proportion women /men = 2/7 = x/490 7x= 2· 490 :7

X = 2·70 = 140

4 0
2 years ago
Sasha is planning to create a garden with area 30 m2. She could use a
son4ous [18]

Answer:

Circle requires ≈ 20 m of edging

Step-by-step explanation:

A = πR²

R = √(A/π)

C = 2πR = 2π√(A/π)

C = 2π√(30/π) = 19.41625... ≈ 20 m

square needs ≈ 22 m of edging

equilateral triangle needs ≈ 25 m of edging

5 0
3 years ago
If y = f(x) = A(0.5)* + B is increasing on the interval (-0, o), which statement must be true?
Elena L [17]

Answer:

B) A < 0

Step-by-step explanation:

I had the same question, and got it right.

7 0
3 years ago
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Mel uses one fourth of a yard of ribbon to make a hair bow how many hair bows can mel make with 1 yard of ribbon​
luda_lava [24]

Answer:

4 hair bow

Step-by-step explanation:

if 1/4 can make 1 hair bows you can make 4 hair bows

, it's simple 4/1=4

6 0
3 years ago
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