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Olin [163]
3 years ago
15

Solve the system of equations. -5x+2y=9 y=7x

Mathematics
2 answers:
posledela3 years ago
6 0

Answer:

x = 1

Step-by-step explanation:

Substitute y with 7x.

-5x + 2(7x) = 9

Solve parentheses.

-5x + 14x = 9

Combine like terms.

9x = 9

Now solve the equation.

9x = 9

/9     /9

-----------

x = 1

Law Incorporation [45]3 years ago
4 0

Answer:

uuuuuuuuuuum

Step-by-step explanation:

maybe it's...


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(-3,600,000,000)x(0.00000824)
Nadusha1986 [10]
-29664 is the correct answer. This mostly deals with the zeros and crossing them off
8 0
2 years ago
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Jet001 [13]

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6 0
3 years ago
Please help! For the function f(x) = 2x^6 + 3x^4 - 4x^3 + (1/x) - sin(2x) find the first four derivatives.
klasskru [66]

Answer:

See the explanation

Step-by-step explanation:

We know that

f(x) = 2x⁶ + 3x⁴ - 4x³ + (1/x) - sin2x

Lets calculate the derivatives:

f'(x) = 6(2x⁵) + 4(3x³) - 3(4x²) -( 1/x²) - 2(cos2x)

f'(x) = 12x⁵ + 12x³ - 12x² - (1/x²) - 2cos2x

Similarly:

f''(x) = 60x⁴ + 36x² - 24x + (2/x³) + 4sin2x

f'''(x) = 240x³ + 72x - 24 - (6/x⁴) + 8cos2x

Rearrange:

f'''(x) - 240x³ +72x - (6/x⁴) + 8cos2x - 24

f''''(x) = 720x² + 72 + (24/x⁵) - 16sin2x

Rearrange:

f''''(x) = 720x² + (24/x⁵) - 16sin2x +72

8 0
2 years ago
2[(7-10)²+5]² please help!!! I'm stuck !!!
d1i1m1o1n [39]
2[(7 - 10)^2 + 5]^2
2[(-3)^2 + 5]^2
2[(9 + 5)]^2
2[(14)^2]
2(196)
392
6 0
3 years ago
What is the area of the triangle?<br> 7<br> 2
Andreas93 [3]

Answer:

7 square units

Step-by-step explanation:

A = 7 x 2 x 1/2

A = 14 x 1/2

A = 7

Hope that helps!

5 0
2 years ago
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