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3 years ago

Determine the equations that have a solution of x = 0.5? Select the two correct

Mathematics

1 answer:

RideAnS [48]3 years ago

3 0

Answer:

1 is correct

2 is incorrect

3 is incorrect

4 is incorrect

5 is correct

Step-by-step explanation:

1. 2(0.5+3) = 1+6 = 7

2. 1/2(0.5+3) = 1/4+3/2 = 7/4

3. 6(0.5+4) = 27

4. 1/6(0.5+4) = 0.75

5. 6(0.5+4) = 27

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Tp 3 Work Backwards

Pachacha [2.7K]

Answer:

Your equation option is possibly in here somewhere.

Step-by-step explanation:

A = C - 2

B = A + 6 → A = B - 6

C - 2 = A = B - 6 → B = C + 4

44 = C + B + A

44 = C + (C + 4) + (C - 2)

44 = 3C + 2

42 = 3C

C = 7

3 0

3 years ago

Place these metric units in order from the smallest to the largest: meter, millimeter, kilometer, decimeter, centimeter, dekamet

hammer [34]

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8 0

3 years ago

Find the vertex of the quadratic function

Galina-37 [17]

Answer:

(1.5,2.5)

Step-by-step explanation:

f(x) = 2x^2 - 6x + 7

Take the first derivative and set it equal to 0 (the slope is 0 at the vertex)

f'(x) = 4x -6

0 = 4x - 6

4x = 6

x = 3/2 or 1.5

If x = (3/2), then y = 2(3/2)^2 - 6(3/2) + 7

y = 2(9/4) - 18/2 + 7

y = (9/2) - 2

y = 2.5

See attached graph.

8 0

2 years ago

What is the place value of the underlined digit?

leonid [27]

Answer:

Hello! i don't see the underlined digit

4 0

3 years ago

What is the equation of this line in standard form? 8x−7y=−25 8x−9y=23 8x−9y=−23 9x−8y=23 Number graph ranging from negative fiv

Gnoma [55]

Answer:

The equation of line is:

$8x-9y=-23$

Step-by-step explanation:

We are given that a graph is a that passes through two points:

$(-4,-1)$ and $(\dfrac{1}{2},3)$

We know that the equation of line passing through two points:

$(a,b)$ and $(c,d)$ is given by:

$y-b=\dfrac{d-b}{b-a}\times (x-a)$

Here we have:

$(a,b)=(-4,-1)$ and $(c,d)=(\dfrac{1}{2},3)$

Hence, the equation of line is:

$y-(-1)=\dfrac{3-(-1)}{\dfrac{1}{2}-(-4)}\times (x-(-4))\\\\y+1=\dfrac{3+1}{\dfrac{1}{2}+4}\times (x+4)\\\\y+1=\dfrac{4}{\dfrac{9}{2}}\times (x+4)\\\\y+1=\dfrac{4\times 2}{9}\times (x+4)\\\\y+1=\dfrac{8}{9}\times (x+4)\\\\9\times (y+1)=8\times (x+4)\\\\9y+9=8x+8\times 4\\\\9y+9=8x+32\\\\8x-9y=9-32\\\\8x-9y=-23$

Hence the equation of line is:

$8x-9y=-23$

5 0

3 years ago