3 years ago

Which graph represents the solution of y <_ x + 3 and y >_ -2x - 2? Please show work

Mathematics

1 answer:

ziro4ka [17]3 years ago

7 0

Answer:

it is 4th one

Step-by-step explanation:

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What is the solution to the open sentence? 8y + 7 = y + 21 A. 2 B. 4 C. 7 D. 14

Airida [17]

8y+7= y+21
Subtract y from both side
7y+7=21
Subtract 7 from both sides
7y = 14
Divide both sides by 7
Y=2 or A

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3 years ago

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astraxan [27]

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3 years ago

In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati

Novay_Z [31]

Answer:

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

Step-by-step explanation:

we have

$h=-16t^2+55t+4$

This is a vertical parabola open downward

The vertex represent a maximum

where

h is the height of the bird

t is the amount of time, in seconds, the bird had been in the air

For h=40 ft

substitute in the quadratic equation

$40=-16t^2+55t+4$

$-16t^2+55t+4-40=0$

$-16t^2+55t-36=0$

The formula to solve a quadratic equation of the form

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

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+55t-36=0$

$a=-16\\b=55\\c=-36$

substitute in the formula

$x=\frac{-55\pm\sqrt{55^{2}-4(-16)(-36)}} {2(-16)}$

$x=\frac{-55\pm\sqrt{721}} {-32}$

$x=\frac{-55+\sqrt{721}} {-32}=0.88\ sec$

$x=\frac{-55-\sqrt{721}} {-32}=2.56\ sec$

therefore

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

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3 years ago

PLS HELP ME FINISH THIS THANKS

Y_Kistochka [10]

Pay attention to the even numbers

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3 years ago

The box plots below show the average daily temperatures in January and December for a U.S.

Marysya12 [62]

Answer:

The answer is C

Step-by-step explanation:

Took the test!

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3 years ago