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2 years ago

Please help, i need it done by today but dint know how to solve it

Mathematics

1 answer:

Kaylis [27]2 years ago

4 0

Answer:

B, C

Step-by-step explanation:

Equation for each tree's growth.

A: y = 4x + 5

You are correct.

B: Your slope is correct, 4.5

Equation of height: y = 4.5x + 3

C: It starts at 10 inches, so in y = mx + b, b = 10.

Now we find the slope from points on the graph (0, 10) and (3, 20).

slope = m = (20 - 10)/(3 - 0) = 10/3

Equation: y = 10x/3 + 10

Questions:

Which tree is growing fastest:

The slope is the rate of growth.

Answer: B since it has the greatest slope.

Tallest tree when planted:

The y-intercept is the4 initial height.

Answer: C since it was 10 inches tall at planting.

Challenge:

A: 4x + 5 = 4(6) + 5 = 29

B: 4.5x + 3 = 4.5(6) + 3 = 30

C: 10x/3 + 10 = 10(6)/3 + 10 = 30

Trees B and C were both 30 inches at 6 months. Tree A was 29 inches.

Answer: B and C

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Find a formula for the inverse of the function: f(x) = 9–6/x^2, x>0. f^-1(x)=

QveST [7]

9514 1404 393

Answer:

f^-1(x) = √(6/(9 -x))

Step-by-step explanation:

The inverse function is the solution to ...

x = f(y)

x = 9 -6/y^2

x +6/y^2 = 9 . . . . . add 6/y^2

6/y^2 = 9 -x . . . . . subtract x

6/(9 -x) = y^2 . . . . . multiply by y^2/(9 -x)

y = √(6/(9 -x)) . . . . take the square root

Then the inverse function can be written as ...

f^-1(x) = √(6/(9 -x)) . . . . . . x < 9

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2 years ago

Write the decimal 0.36 recurring as a fraction in simplest form.

Grace [21]

Answer:

36/100

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Suffering, pain, death, what we've been seeing so recent.

It's hard not to focus on it.

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Giving people hope is all theres left hope for a better future. Sad to say things will only get worst for a period of time but there is hope for the better future that will arrive in its own appointed time!

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3 years ago

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ARE all spheres similar to each other?

Paul [167]

Due to the nature of spheres, they are all similar to each other.

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3 years ago

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Samuel has 2 1/4 cups of flour. She uses 1/3 of the flour to make pancakes. How many cups of flour did he use? Please try to exp

Kruka [31]

Answer:

Samuel uses 1 11/12 cups of flour.

Step-by-step explanation:

Okay, this is assuming he uses the rest of the flour she didn't use.

The first step would be to find the Greatest Common Factor(GCF) of the fractions

2 1/4 and 1/3 have different denominators, but they both can divide into 12.

1/4 * 3/3 = 3/12

1/3 * 4/4 = 4/12

Now we can also convert 2 3/12 into an improper fraction to make it easier

2* 12/12 = 24/12

24/12+ 3/12 = 27/12

Here's the part were we subtract the two numbers.

27/12- 4/12 = 23/12

The last step is to simplify the fraction

23/12 = 1 11/12 cups

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3 years ago

While working on the roof of his house, John leans a 15 foot ladder against a second story window. If the distance on the ground

Minchanka [31]

Answer:

12 foot.

Step-by-step explanation:

Given that,

A ladder leans a 15 foot ladder against a second story window.

The distance on the ground between the base of the ladder and the house is 9 feet.

We need to find the height of the ladder. Let it is h.

If we consider a right angles triangle such that 15 foot is hypotenuse, 9 feet is base, then we need to find the perpendicular height of the triangle. Using Pythagoras theorem to find it.

$15^2=9^2+h^2\\\\h^2=15^2-9^2\\\\h^2=225-81\\\\h=12\ \text{foot}$

So, the height of the ladder that reaches the second story window is 12 foot.

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3 years ago

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