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4 years ago

What is the solution to the following equation? (4 points)

Mathematics

1 answer:

Lubov Fominskaja [6]4 years ago

3 0

Answer:

explanation:

5(2(2)-6)+20=10

5(4-6)+20=10

5(-2)+20=10

-10+20=10

10=10

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-2x + y = 0<br> x - y = -3

miv72 [106K]

Answer:

The value of x is 3 and y is 6.

Step-by-step explanation:

You can solve this simultaneous equation by elimination method :

$- 2x + y = 0 - - - (1)$

$x - y = - 3 - - - (2)$

$(1) + (2)$

$- 2x + y + x + (- y) = 0 + ( - 3)$

$- x = - 3$

$x = 3$

$substitute \: x = 3 \: into \: (2)$

$(2)⇒$

$3 - y = - 3$

$- y = - 6$

$y = 6$

7 0

3 years ago

A sector with a central angle measure of 7pi/4 (in radians) has a radius of 16 cm

strojnjashka [21]

Answer:

Area of sector = 704 cm ²

Step-by-step explanation:

Given:

Central angle = 7pi/4 (in radians)

Radius = 16 cm

Find:

Area of sector = ?

Computation:

Central angle = $\frac{7}{4}\pi \times \frac{180}{\pi } =315$

$Area\ of \ sector=\frac{\theta}{360}\pi r^2\\\\Area\ of \ sector=\frac{315}{360}\pi 16^2\\\\Area\ of \ sector=704 cm^2$

Area of sector = 704 cm ²

5 0

3 years ago

Indicate the answer choice that best completes the statement or answers the question.

Elza [17]

Answer:

i love your pro pic

Step-by-step explanation:

8 0

3 years ago

What is the graph of the equation 4x – 5y = 15?

pshichka [43]

4x - 5y = 15
put x=0, 4(0) - 5y = 15
-5y = 15
y = -3
coordinates (0,-3)
put y=0, 4x - 5(0) = 15
x = 15/4
coordinates (15/4,0)
put y=1, 4x - 5(1) =15
4x = 20
x = 5
coordinates (5,1)

Plot the three coordinates to obtain a straight line.
Note: You can also use other points rather from what i mentioned.

Hope it helped!

6 0

4 years ago

Please help me with this homework

Leya [2.2K]

Answer:

it's >

Step-by-step explanation:

3 is greater

3 0

3 years ago

Read 2 more answers