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Juli2301 [7.4K]
3 years ago
15

Solve the simulatenous equation 2x+4y=1 3x-5y=7

Mathematics
1 answer:
zhuklara [117]3 years ago
8 0

Step-by-step explanation:

3 (2x + 4y = 1)

2 (3x - 5y = 7)

=> 12y = 3

-10y = 14

22y = -9

divided bothsides

y = -9/22

To find x

substitute Y= -9/22

into 2x + 4y = 1

2x + 4(-9/22) = 1

2x -18/11 = 1

2x= 1 + 18/11

2x = (11 + 18)/11

2x = 29/11

x = 29/11/2

x= 29/22

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Which angle measures are correct? Select three options,
masya89 [10]

Answer:

m∠W = 125°

m∠X = 55°

m∠Z = 55°

Step-by-step explanation:

The shape is parallelogram WXYZ. m∠Y = 125.

A parallelogram is a quadrilateral shape in which both opposite sides and opposite angles are equal to each other. The diagonals of a parallelogram bisect each other. Also consecutive angles in a parallelogram are supplementary.

Therefore in parallelogram WXYZ:

m∠Z + m∠Y = 180° (Consecutive angles in a parallelogram are supplementary)

m∠Z + 125 = 180

m∠Z = 180 - 125

m∠Z = 55°

m∠W = m∠Y (Opposite angles are equal)

m∠W = 125°

m∠W + m∠X = 180° (Consecutive angles in a parallelogram are supplementary)

m∠X + 125 = 180

m∠X = 180 - 125

m∠X = 55°

6 0
3 years ago
A cube is cut into two pieces by a single slice that passes through the points A, B, and C.
masha68 [24]
I believe it’s a trapezoid but i’m not too sure... sorry :((
5 0
3 years ago
Read 2 more answers
What is the solution to the system of equations below?<br><br> x + y = 7 and x + 2 y = 11
xxTIMURxx [149]

Answer:

x=3, y=4. (3, 4).

Step-by-step explanation:

x+y=7

x+2y=11

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

-x-y=-7

x+2y=11

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

y=4

x+4=7

x=7-4

x=3

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2 years ago
Use the law of cosines to solve for the measure of the largest angle in triangle ABC.
frosja888 [35]

Answer:

Step-by-step explanation:

6 0
2 years ago
Find the coordinates of the midpoint of AS if A(-4, 7) and S(5,3).
lesya692 [45]

Answer:

The answer is

<h2>( \frac{1}{2}  \: ,  \: 5)</h2>

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

<h3>M = (  \frac{x1 + x2}{2} , \:  \frac{y1 + y2}{2} )</h3>

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A(-4, 7) and S(5,3)

The midpoint is

<h3>M  = ( \frac{ - 4 + 5}{2} , \:  \frac{7 + 3}{2} ) \\  = ( \frac{1}{2} , \:  \frac{10}{2} )</h3>

We have the final answer as

<h3>( \frac{1}{2}  \: ,  \: 5)</h3>

Hope this helps you

8 0
3 years ago
Read 2 more answers
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