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taurus [48]
2 years ago
8

4y=-3-x 7x-4y=43 elimination please help!!

Mathematics
2 answers:
riadik2000 [5.3K]2 years ago
4 0

Answer:

x = 5 y =-2

Step-by-step explanation:

You can substitute the 4y in,
7x - (-3-x) = 43
7x + 3 + x = 43
8x + 3 = 43
8x = 40
x = 5

Then plug the x back into the equation,
4y = -3 - 5
4y = -8
y = -2

Tresset [83]2 years ago
4 0

Answer:

y= -2 x=5

Step-by-step explanation:

(See attachment below)

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4 years ago
At a currency exchange, 11 U.S. dollars can be exchanged for 10 Euros. How many Euros will you receive for 1 U.S. dollar?
boyakko [2]
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3 years ago
45 pts! which explicit function defines this geometric sequences?<br> 3, 1, 1/3, 1/9...
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c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST Imagine that you are plotting points on a coordinate plane. Each axis is labeled with integers from -5 to 5
Fudgin [204]

Answer:

The coordinate of a point is its location on a grid.

The point will be located halfway between -2 and -3 on the x-axis, on -4 on the y-axis

The coordinate is given as:

Express as decimals

The above point means that:

This means that:

The point will be located halfway between -2 and -3 on the x-axis, on -4 on the y-axis

Step-by-step explanation:

7 0
2 years ago
What is the rectangular form of z= 40(cos(7pi/6)+ i sin(7pi/6))
Anastaziya [24]

Answer:

C. z = -20\sqrt{3}-i\,20

Step-by-step explanation:

The rectangular form of a complex number is represented by the following formula:

z = a+i\,b (1)

Where each coefficient can be determined as function of the polar components:

a = r\cdot \cos \theta (2)

b = r\cdot \sin \theta (3)

Where:

r - Magnitude of the complex number, dimensionless.

\theta - Direction of the complex number, measured in radians.

If we know that r = 40 and \theta = \frac{7\pi}{6}, then the rectangular form of the number is:

a = 40\cdot \cos \frac{7\pi}{6}

a = -20\sqrt{3}

b = 40\cdot \sin \frac{7\pi}{6}

b = -20

The rectangular form of z=40\cdot\left(\cos \frac{7\pi}{6}+i\,\sin \frac{7\pi}{6}\right) is z = -20\sqrt{3}-i\,20. The correct answer is C.

4 0
3 years ago
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