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3 years ago

Would someone help me understand this type of math

Mathematics

1 answer:

Svetlanka [38]3 years ago

6 0

I never understand that

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Reflection across the x-axis

Delicious77 [7]

Answer:

a redlecrion across the x axis results nvm in a negative x value: -x

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4 years ago

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Please help brainiest is award.

Thepotemich [5.8K]

Answer:

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Step-by-step explanation:

i has helped your welcome

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4 years ago

Please help :( anyone know the answer ?

dsp73

Answer:

Step-by-step explanation:

The difference +3.

The first term is 2.

$a_1=2\\d=+3$

$3n-1$

$3(1)-1=2\\3(2)-1=5\\3(3)-1=8$

8 0

3 years ago

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PLEASE HELP! AND PLEASE EXPLAIN HOW YOU SOLVED

sweet [91]

Step-by-step explanation:

The height of the ball is given by

$h = -16t^2 + 144t + 5$

We can solve for the time when it reaches the height of 325 feet as follows:

$325 = -16t^2 + 144t + 5 \\ \Rightarrow 16t^2 - 144t + 320=0$

To solve this equation, we use the quadratic formula:

$t = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2s}$

$\:\:\:\:= \dfrac{144 \pm \sqrt{(-144)^2 - 4(16)(320)}}{32}$

$\:\:\:\:=\dfrac{144 \pm 16}{32} = 4\:\text{s},\:5\:\text{s}$

So this means that the ball will reach the height of 325 ft four seconds after launch, continue going up and a second later, it will at the height of 325 ft on it way down.

4 0

3 years ago

The 5km (5000 meters) hiking trail will have markers placed every 800 m. How many markers will be used? Explain why your awnser

lakkis [162]

Answer:

6 markers

Step-by-step explanation:

5000/800 = 6.25

We can't have a quarter of a marker

If we were to round up it would have to be 5.6 km to fit 7 so we have to round down, and the answer is 6

In addition, along the 5000 m trail there will be one at 800, 1600, 2400, 3200, 4000, and 4800

We can only fit 6 of them along the trail if they are spaced 800 m apart so 6 markers will be able to fit on a 5k trail

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3 years ago

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