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arlik [135]
3 years ago
15

Plssssssss help solve

Mathematics
2 answers:
Lana71 [14]3 years ago
3 0

Answer:

cosine = adjacent/hypotenuse

cos A = 20/29   (choice: yellow)

Step-by-step explanation:

KIM [24]3 years ago
3 0

Answer:

yellow

Step-by-step explanation:

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Colby and his 3 friends buy lunch. The total is $30.60. If they share the cost equally, how much, in dollars, should each person
Anna35 [415]

Answer: Each person pays $10.20

Step-by-step explanation:

7 0
2 years ago
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How do you solve for (w-2)²-63=0 where w is a real number
Murrr4er [49]
(w-2)^2 = 63

FOIL left hand side:
(w-2)^2 = w^2 - 4w + 4

So,
w^2 - 4w + 4 = 63
w^2 - 4w - 59 = 0

Then use quadratic equation to get values of w = 2 + 3*root(7) and w = 2 - 3*root(7).
±
3
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4 0
2 years ago
Give an example of a function F(x) that is an antiderivative of f(x) = 9 cos(9x)+ 3x^2
liubo4ka [24]

We are integrating f(x) = 9cos(9x) + 3x²:    \int\ {9cos(9x)+3x^{2} } \, dx

a) Apply the sum rule

\int\9cos(9x)} \, dx +\int\ 3x^{2} } \, dx

b) Calculate each antiderivative

<u>First integral</u>

\int\ {9cos(9x)} \, dx

1. Take out the constant

9\int\ {cos(9x)} \, dx

2. Apply u-substitution, where u is 9x

9\int\ {cos(u)\frac{1}{9} }  du

3. Take out the constant (again)

9*\frac{1}{9} \int{cos(u)}  du

4. Take the common integral of cos, which is sin

9*\frac{1}{9}sin(u)}

5. Substitute the original function back in for u and simplify9*\frac{1}{9} sin(9x) = sin(9x)

6. Always remember to add an arbitrary constant, C, at the end

sin(9x) + C

<u>Second integral</u>

\int3x^{2} } \, dx

1. Take out the constant

3\int{x^{2} } \, dx

2. Apply the power rule, \int{x}^{a}  \, dx =\frac{x^{a+1} }{a+1}, where <em>a</em> is your exponent

⇒ 3*\frac{x^{2+1} }{2+1}  = x^{3}

3. Add the arbitrary constant

x^{3}  + C

c) Add the integrals

sin(9x) + C + x³ + C = sin(9x) + x³ + C

Notice the two arbitrary constants.  Since we do not know what either constant is, we can combine them into one arbitrary constant.

<h3>Answer:</h3>

F(x) = sin(9x) + x³ + C

3 0
2 years ago
Read 2 more answers
I need help!! On this question please hurry
hichkok12 [17]

Step-by-step explanation:

<u>Given</u><u>:</u>

Central Enlargement.

AC=4

AB=5

BC=3

Opp=3

Hyp=5

<u>Required</u><u>:</u>

Sin<A

<u>Formula</u><u>:</u>

Sin<A=Opp/hyp

<u>Solution</u><u>:</u>

Sin<A=Opp/Hyp

Sin<A=3/5 or 0.6

5 0
3 years ago
29 If the zeros of a quadratic function, F, are -3 and 5, what is the equation of the axis of symmetry
UNO [17]

Answer:

the axis of symmetry is X = 1

Step-by-step explanation:

make sure to ask if you need any further guidance.

8 0
1 year ago
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