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insens350 [35]
3 years ago
15

Find the value of the expression below when x =3/4 4x² + 8x - 5

Mathematics
1 answer:
kap26 [50]3 years ago
4 0

Answer:

4x² + 8x - 5

= 4(3/4)² + 8(3/4) - 5

= 4 × 9/16 + 24/4 - 5

= 36/16 + 24/4 - 5

= 9/4 + 6 - 5

= 9/4 +1

= <u>3</u><u>.</u><u>2</u><u>5</u>

Step-by-step explanation:

Hope it helps!!

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Graph the equation y=-x. is (5,5) on the line? what is the slope of the line?
bezimeni [28]
You'll actually need to graph for the first segment
but the second part can be solved with algebra

The equation of the line is y(x)=-x

if we test the co0ordinates we can find if the point lies on the line

(5,5)
y(x)=-x

Using the x co-ordinate
y(5)= -5
y=-5

Leaving us with (5,-5)

Because (5,-5) is not (5,5)
This is not a point on the line

The slope of the line is -1 
4 0
3 years ago
Explain weather 14t-3t is equivalent to 3t-14t. Support your sender by evaluating the expression for t=2.
m_a_m_a [10]

Answer:

Solving 14t-3t we get 22 and 3t-14t we get -22

So, 14t-3t is not equivalent to 3t-14t.

Step-by-step explanation:

We need to explain weather 14t-3t is equivalent to 3t-14t. Support your sender by evaluating the expression for t=2.

<em>Equivalent expressions are those that have same values for any value of variable substituted.</em>

Now, We check if our expressions are equivalent, by evaluating the expression for t=2.

If they are equivalent, they would have same result after evaluation.

First, put t=2 into 14t-3t

14t-3t\\Put\:t=2\\=14(2)-3(2)\\=28-6\\=22

Now put t=2, into 3t-14t

3t-14t\\Put\:t=2\\=3(2)-14(2)\\=6-28\\=-22\\

For solving 14t-3t we get 22 and 3t-14t we get -22

So, 14t-3t is not equivalent to 3t-14t.

6 0
3 years ago
Find the area of a hexagon, to the nearest tenth, with a side length of 8 and apothem of 6.9.
OverLord2011 [107]

Answer:

6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9

6 0
3 years ago
Find the distance between (3,-2) and (2,-4)
Sphinxa [80]

Answer:

i believe it is (2,1)

Step-by-step explanation:

4 0
3 years ago
-40 represents the height of a subway 40 feet below ground level. 40 represents the height of a kite 40 feet above ground level
Sveta_85 [38]

Answer:

0 represents the ground level

4 0
2 years ago
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