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antoniya [11.8K]
3 years ago
13

Hello! Need help again

Mathematics
1 answer:
Shtirlitz [24]3 years ago
4 0
Y=-x
Your welcome:):):)
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The last option because he spent $135 or more
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If sin theta=3/5, what is the measure of the angle?
bezimeni [28]

Answer:

36.86989765°

Step-by-step explanation:

Sin^-1(3/5)

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Solve the equations by factoring:<br><br>x^2−3x−40=0<br><br>4x^2−81=0
Alja [10]

Answer:

see explanation

Step-by-step explanation:

Given

x² - 3x - 40 = 0

Consider the factors of the constant term (- 40) which sum to give the coefficient of the x- term (- 3)

The factors are - 8 and + 5, since

- 8 × 5 = - 40 and - 8 + 5 = - 3, thus

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------------------------------------------------------

Given

4x² - 81 = 0 ← this is a difference of squares and factors in general as

a² - b² = (a + b)(a - b), thus

4x² - 81

=(2x)² - 9²

= (2x + 9)(2x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

2x + 9 = 0 ⇒ 2x = - 9 ⇒ x = - \frac{9}{2}

2x - 9 = 0 ⇒ 2x = 9 ⇒ x = \frac{9}{2}

8 0
3 years ago
Read 2 more answers
Solve for n 0=-5n-2n
iris [78.8K]
0 = -5n - 2n
0 = -7n    <em>|divide both sides by (-7)</em>

<u>n = 0</u>
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riadik2000 [5.3K]

Answer:

I think its c but I'm not sure. You need to ask a professional.

Step-by-step explanation:

5 0
3 years ago
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