Factor y=x Squared-8x

If h(x)= 5 for the function h(x)= 2x+1, what is the value of x?

hodyreva [135]

The value of x is equal to 2. 2 times 2 will give you four. if you add one to the product, you get 5

4 0

3 years ago

Mark, Jessica & Nate each downloaded music from the same website. Mark downloaded 10 songs in total consisting of pop, rock,

KengaRu [80]

P + r + h = 10 <== mark
5p + 2r + 3h = 28 <== jessica
3p + 3r + h = 20 <== nate

p + r + h = 10
3p + 3r + h = 20...multiply by -1
--------------------
p + r + h = 10
-3p - 3r - h = -20 (result of multiplying by -1)
-------------------add
-2p - 2r = -10

p + r + h = 10...multiply by -3
5p + 2r + 3h = 28
---------------------
-3p - 3r - 3h = -30 (result of multiplying by -3)
5p + 2r + 3h = 28
--------------------add
2p - r = -2

-2p - 2r = -10
2p - r = -2
---------------add
-3r = -12
r = -12/-3
r = 4

2p - r = -2
2p - 4 = -2
2p = -2 + 4
2p = 2
p = 1

p + r + h = 10
1 + 4 + h = 10
5 + h = 10
h = 10 - 5
h = 5

Jessica downloaded : 5p + 2r + 3h = 28
5(1) + 2(4) + 3(5) = 28
5 + 8 + 15 = 28
28 = 28 (correct)......she got 5 pop, 8 rock, and 15 hip hop

Nate downloaded : 3p + 3r + h = 20
3(1) + 3(4) + 5 = 20
3 + 12 + 5 = 20
20 = 20 (correct)...he got 3 pop, 12 rock, and 5 hip hop

Mark downloaded : p + r + h = 10
1 + 4 + 5 = 10
10 = 10 (correct)....he got 1 pop, 4 rock, and 5 hip hop <===

6 0

2 years ago

Read 2 more answers

Quadrilaterals WXYZ and W"X"Y"Z"are similar. Identify the type of reflection

Anna71 [15]

Answer:

B) To obtain quadrilateral W'X'Y"Z" quadrilateral WXYZ is reflected across

the x-axis and dilated with a scale factor of 1/2

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, translation and dilation.

If a point A(x, y) is reflected across the x axis the new point is at A'(x, -y)

Dilation is the enlargement or reduction in the size of a figure by a scale factor. If a point A(x, y) is dilated by a scale factor of k about the center of origin, the new point is at A'(kx, ky).

The vertex of Quadrilaterals WXYZ is at W(-6, 8), X(-2, 8), Y(-2, 2), Z(-6, 8) while the vertex of Quadrilaterals W"X"Y"Z" is at W"(-3, -4), X"(-2, -4), Y"(-1, -1), Z"(-3, -4)

If quadrilateral WXYZ is reflected across the x-axis, the new coordinates would be at W'(-6, -), X'(-2, -8), Y'(-2, -2), Z'(-6, -8). If the quadrilateral is then dilated with a scale factor of 1/2, the new point is at W"(-3, -4), X"(-2, -4), Y"(-1, -1), Z"(-3, -4)