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3 years ago

In 45 years Gabriela will be 4 times as old as she is right now how old is she right now

Mathematics

2 answers:

andre [41]3 years ago

7 0

Answer:

Step-by-step explanation:

khan academy answer

IrinaK [193]3 years ago

6 0

Answer:

Step-by-step explanation:

She is currently 15. 45 years from now she will be 60. 60 is 4 times her current age. So right now, she is 15

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This parabola has x-intercepts

slega [8]

Answer:

see the explanation

Step-by-step explanation:

we have the quadratic equation

$y=-16x^{2} +32x-10$

This is a vertical parabola open downward

The vertex is a maximum

Find the x-intercepts of the quadratic equation

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$-16x^{2} +32x-10=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16x^{2} +32x-10=0$

$a=-16\\b=32\\c=-10$

substitute in the formula

$x=\frac{-32(+/-)\sqrt{32^{2}-4(-16)(-10)}} {2(-16)}$

$x=\frac{-32(+/-)\sqrt{384}} {-32}$

$x=\frac{-32(+/-)8\sqrt{6}}{-32}$

$x=\frac{-32(+)8\sqrt{6}}{-32}=\frac{32(-)8\sqrt{6}}{32}=0.39\ sec$

$x=\frac{-32(-)8\sqrt{6}}{-32}=\frac{32(+)8\sqrt{6}}{32}=1.61\ sec$

therefore

This parabola has two x-intercepts representing the times when the dolphin's height above water is zero feet

8 0

2 years ago

Read 2 more answers

It was reported in 2019, the world’s tallest giraffe lives in Australia and measures 5.7 m . How tall is the giraffe in centimet

LiRa [457]

Answer:

14.478

Step-by-step explanation:

search in anything 5.7 in centimeters boom your answer

6 0

2 years ago

Read 2 more answers

PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

aniked [119]

Answer:

5:9

6:5

7:-6

Step-by-step explanation:

7 0

3 years ago

I need help ASAP. Thank you

Fed [463]

Here is the link to the graph. You can scale it and tweak it.
https://www.desmos.com/calculator/mawkflj9ws

Hope this helped!

8 0

3 years ago

56° х 20 Solve for x. Round to the nearest tenth.

otez555 [7]

Answer:

vgkf çµr nm 5hr 6tqy7gu8hibyg7tf6r5d4es3

Step-by-step explanation:

4 0

2 years ago