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taurus [48]
3 years ago
6

Solve the simultaneous equations 4x+y=10 X-5y=13

Mathematics
2 answers:
S_A_V [24]3 years ago
7 0

Answer:

{x,y}={3,−2}

Step-by-step explanation:

skad [1K]3 years ago
3 0

Answer: 4x + y = 10 is -y+10/4                    X-5y=13 is x=5y+13

Step-by-step explanation:

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The formula is m=4a+2c where c is the number of children, m=the number of meatballs, a=number of adults.
Trava [24]

Answer:

110

Step-by-step explanation:

m = 4a + 2c

a = 25, c = 5

m = 4(25) + 2(5)

m = 100 + 10

m = 110 meatballs

6 0
3 years ago
What is the sum of the polynomials?
Allisa [31]

Answer:

( -  {x}^{2}  + 9) + ( - 3 {x}^{2} - 11x + 4) \\  -  {x}^{2}   + 9 - 3{x}^{2}  - 11x + 4 \\ =   - 4 {x}^{2}   - 11x + 13

4 0
3 years ago
Read 2 more answers
Which equation describes a line parallel<br> to y= 4x+ 5 through point (-2, 1)?
Tema [17]

Hi there!

For a line to be PARALLEL, it must contain the same slope.

The given line has a slope of 4, so we can use the point-slope formula to solve:

\large\boxed{y - y_1 = m(x - x_1)}

y1 = y-coordinate of given point

x1 = x-coordinate of given point

m = slope

Plug in the values:

y - 1 = 4(x - (-2))\\\\y - 1 = 4(x + 2)

Simplify:

y - 1 = 4x + 8\\\\\boxed{y = 4x + 9}

8 0
2 years ago
If quadrilateral ABCD is a parallelogram, what are the correct values for x and y? x = 30, y = 3 x = 30, y = 2 x = 70, y = 2 x =
jeka57 [31]

Answer:

-70 is the correct answer

Step-by-step explanation:

To add fractions, find the LCD and then combine

4 0
3 years ago
Read 2 more answers
Simplify the radical completely.
Sonja [21]

Answer:

D

Step-by-step explanation:

But basically, one by one you try moving the terms out of the radical.

75 is also 25 * 3 and since 25 has a perfect square root of 5 that goes out and 3 stays inside the radical.

x^3 is also x^2 * x and since x^2 has a perfect square root which is just x that goes outside while the remaining x stays inside.

y^9 is also y^8 * y and since we move variables out the radical in twos y^ goes outside the radical and y stays inside alone.

Finally, z is just z it can't be taken out so it stays inside the radical.

Hope that helps!

8 0
3 years ago
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