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3 years ago

6

What is the growth of the tree

2 answers:

Vladimir [108]3 years ago

7 0

2/3 foot

3 and 1/3 is the same as 10/3. 10/3 divided by 5 is 2/3.

11Alexandr11 [23.1K]3 years ago

5 0

I think it should be A

Cause if u divided 3 1/3 by 5 ur answer is 1.5 which is 1/5

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PLS PLS HELP, I DONT WANT TO FAIL!!

Flura [38]

Answer:

2.0 seconds

Step-by-step explanation:

<u>Given quadratic functions</u>:

$\begin{cases}y=-7x^2+26x+3\\y=-6x^2 +23x+5\end{cases}$

To find the time, in seconds, that the balloons collided at the highest point, <u>substitute</u> one equation into the other equation and rearrange to <u>equal zero</u>:

$\begin{aligned}-6x^2+23x+5 & = -7x^2+26x+3\\-6x^2+23x+5+7x^2 & = -7x^2+26x+3+7x^2\\x^2+23x+5 & = 26x+3\\x^2+23x+5-26x & = 26x+3-26x\\x^2-3x+5& = 3\\x^2-3x+5-3& = 3-3\\x^2-3x+2& = 0\end{aligned}$

<u>Factor</u> the quadratic:

$\begin{aligned}x^2-3x+2 & = 0\\x^2-2x-x+2 & = 0\\x(x-2)-1(x-2) & = 0\\(x-1)(x-2) & = 0\\\end{aligned}$

Apply the <u>zero-product property</u> to solve for x:

$\implies (x-1)=0 \implies x=1$

$\implies (x-2)=0 \implies x=2$

Therefore, the balloons collided at 1 second and 2 seconds.

To find at which time the highest point of collision occured, substitute both values of x into one of the functions:

$f(1)=-6(1)^2 +23(1)+5=22$

$f(2)=-6(2)^2 +23(2)+5=27$

Therefore, the time, in seconds, that the balloons collided at the highest point is 2.0 seconds.

Learn more about quadratic systems of equations here:

brainly.com/question/27930827

8 0

2 years ago

Read 2 more answers

How can 38/6 be expressed as a decimal?

seraphim [82]

38/6 = 19/3
divide 19 by 3 :-

= 6.333....

The 3 is recurring

8 0

3 years ago

Every year,students at Memorial High school volunteer to clean local highway roadsides. Each club or team at the school is

arlik [135]

She has to clean 2.5

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4 years ago

Read 2 more answers

On a fishing trip, you catch two fish. The weight of the first fish is shown. The second fish weighs at least 0.5 pound more tha

yulyashka [42]

Answer:

w >= 1.7

Step-by-step explanation:

fyi the >= mean less than or equal to

7 0

3 years ago

Your Bank account balance was $235 and 24. After two checks were cashed (each for the same amount) your balance is now -45.58. W

elena55 [62]

235.24 + 45.58 = 280.82

280.82/2 = 140.41

each check was for $140.41

8 0

3 years ago