Ask question

Ask question

All categories

adelina 88 [10]

3 years ago

5

an architect is designing a commemorative steel arch in the shape of a parabola. its axis is vertical and its feet are 300 yd. a

part. If the focus of the parabolic arch is to be 80 yd. above the ground, how high must the arch be?

1 answer:

Vedmedyk [2.9K]3 years ago

8 0

Answer:

125yd

option b is correct

You might be interested in

Simpifly (-5x2 - 3x - 7) + (-2x3 + 6x2 - 8)

klasskru [66]

Answer:

-2x³ + x² - 3x - 15

Step-by-step explanation:

Simply combine like terms together:

-5x² - 3x - 7 - 2x³ + 6x² - 8

-2x³ + (-5x² + 6x²) - 3x + (-7 - 8)

-2x³ + x² - 3x + (-7 - 8)

-2x³ + x² - 3x - 15

6 0

3 years ago

Read 2 more answers

Open the photo to see question please...

9966 [12]

Answer:c

cccg bgfv

Step-by-step explanation:

c

8 0

3 years ago

What is the approximate value of b, rounded to the nearest tenth? Use the law of sines to find the answer. Triangle A B C is sho

Setler79 [48]

Answer:

4.7 units

Step-by-step explanation:

We are given that in triangle ABC

AB= 3 units

Angle ABC=76 degree

Angle CAB=66 degrees

AC=b

We have to find the approximate value of b using sin laws.

We know that sum of angles of a triangle =180 degrees

$\angle CAB+\angle ABC+\angle ACB=180$

$76+66+\angle ACB=180$

$142+\angle ACB=180$

$\angle ACB=180-142=38^{\circ}$

We know that law of sines

$\frac{BC}{Sin A}=\frac{AC}{SinB}=\frac{AB}{sin C}$

Substitute the values then we get

$\frac{b}{sin 76^{\circ}}=\frac{3}{sin 38^{\circ}}$

$b=\frac{3}{sin 38^{\circ}}\times sin 76^{\circ}$

$b=4.7$

Hence, the value of b= 4.7 units

5 0

4 years ago

Read 2 more answers

Y.y3 write without exponts

Serga [27]

Answer:

Y x Y x Y x Y

Step-by-step explanation:

The exponent tells how many times that number is multiplied.

So, x^3 is the same as multiplying x 3 times.

3 0

3 years ago

1/3 a = -5 whats the answer quick

lana [24]

Answer:

a=-15

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers