All categories

3 years ago

Please hurry

Mathematics

1 answer:

Studentka2010 [4]3 years ago

8 0

Answer:

D 45.6 Square centimetres

Step-by-step explanation:

8 cm time 5.7 cm

You might be interested in

How do I calculate this? Is there a formula?

alex41 [277]

Answer:

Height of cables = 23.75 meters

Step-by-step explanation:

We are given that the road is suspended from twin towers whose cables are parabolic in shape.

For this situation, imagine a graph where the x-axis represent the road surface and the point (0,0) represents the point that is on the road surface midway between the two towers.

Then draw a parabola having vertex at (0,0) and curving upwards on either side of the vertex at a distance of $x = 600$ or $x = -600$ , and y at 95.

We know that the equation of a parabola is in the form $y=ax^2$ and here it passes through the point $(600, 95)$ .

$y=ax^2$

$95=a \times 600^2$

$a=\frac{95}{360000}$

$a=\frac{19}{72000}$

So new equation for parabola would be $y=\frac{19x^2}{72000}$ .

Now we have to find the height $(y)$ of the cable when $x= 300$ .

$y=\frac{19 (300)^2}{72000}$

y = 23.75 meters

8 0

3 years ago

Read 2 more answers

A)2a+ 1=2a+3

Montano1993 [528]

Answer:

I'm not sure but at least i tried

8 0

3 years ago

Read 2 more answers

The figure shows how a leaf meets the stem of a flower to form two angles.

MrRissso [65]

Answer:

Step-by-step explanation:

because the 3x will multiply the e

24 which is 8

4 0

3 years ago

Read 2 more answers

16) f(x) = x2 + 3x +5 Find the x intercepts

harina [27]

Answer:

-3/2+√29/2 or -3/2-√29/2

Step-by-step explanation:

When the graph intercepts with x-axis, the value of y is zero.

So substitute y with zero.

6 0

3 years ago

What is the same about these polygons

aksik [14]

They are all quadrilaterals

6 0

3 years ago

Read 2 more answers