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3 years ago

8

Having trouble understanding the quadratic formula would appreciate the help.

1 answer:

Furkat [3]3 years ago

7 0

The quadratic formula helps you solve a quadratic equation because sometimes quadratic equations are a lot harder to solve. It helps you find the two solutions on the parabola that makes the quadratic equation true. If you want the proof visit this link ---) https://youtu.be/r3SEkdtpobo , just copy and paste the link to get to the video. I hope this helps answer your lingering questions about the quadratic formula.

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A billboard is 27 feet high and casts a 36-foot shadow at noon. At the same time, a fir tree next to the billboard casts a 48-fo

Archy [21]

Proportion can be used to find the height = 0.75

Step-by-step explanation:

A billboard is 27 feet high and casts a 36-foot shadow at noon.

Height of billboard = 27 feet

Height of shadow of billboard = 36 feet

$\frac{\texttt{Height of billboard}}{\texttt{Height of shadow of billboard}}=\frac{27}{36}\\\\\frac{\texttt{Height of billboard}}{\texttt{Height of shadow of billboard}}=\frac{3}{4}=0.75$

A fir tree next to the billboard casts a 48-foot shadow.

Height of shadow of fir tree = 48 foot

$\texttt{Height of shadow of fir tree, H = }\frac{\texttt{Height of billboard}}{\texttt{Height of shadow of billboard}}\times 48$

Proportion can be used to find the height = 0.75

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3 years ago

Square root of -19 in terms of i

yulyashka [42]

Answer:

i√19

Step-by-step explanation:

Because √(-19) = √(-1)√19, and because √(-1) = i, we get i√19

7 0

3 years ago

Abbey is adopting a kitten. Abbey has a rectangular container to bring the kitten home in. The container has a volume of 3,100

solniwko [45]

L=10.6in
H=15.6in
B=?

$\\ \rm\Rrightarrow V=LBH$

$\\ \rm\Rrightarrow 3100.5=10.6(15)B$

$\\ \rm\Rrightarrow 3100.5=159B$

$\\ \rm\Rrightarrow B=\dfrac{3100.5}{159}+19.5$

5 0

2 years ago

Read 2 more answers

Find the y-intercept of the line -4× - 2y =16

Oksi-84 [34.3K]

Answer:

The y intercept is (0,-8)

Step-by-step explanation:

To find the y intercept, set x = 0 and solve for y

-4x -2y = 16

-4(0) -2y =16

-2y = 16

Divide by -2

-2y/-2 = 16/-2

y = -8

The y intercept is (0,-8)

6 0

3 years ago

Read 2 more answers

04. A school band charges a $160 flat fee plus $40 an hour to play.

Degger [83]

Answer:

Step-by-step explanation:

$\frac{320-160}{40}=\frac{160}{40}=4$

School band played for 4 hours.

3 0

3 years ago