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3 years ago

NO LINKS!!!!!

Mathematics

2 answers:

svp [43]3 years ago

6 0

Answer:

Sorry I can't do these ones

Step-by-step explanation:

LUCKY_DIMON [66]3 years ago

6 0

9514 1404 393

Answer:

y = 0.06x(20 -x)
y = 5√(x+5) +4
y = (x -9)^2 -76; (9, -76); 9±√76; 5

Step-by-step explanation:

If we assume the ball was kicked from the origin and that it follows a parabolic curve, the equation can be written ...

y = -kx(x -20)

for some value of k that makes the maximum be 6. The maximum will occur at the value of x that is halfway between the points where the ball is on the ground, so at x=10. Then our value of k is such that ...

6 = k(10)(20 -10) = 100k

k = 6/100 = 0.06

The equation describing the ball's flight is ...

y = 0.06x(20 -x)

A graph is attached.

The translated square root function will have a vertical multiplier k that will make it pass through the given point. The parent function f(x) = √x can be translated so its vertex moves from (0, 0) to (-5, 4) by ...

g(x) = 4 +f(x+5)

Applying the scale factor k gives ...

g(x) = k·√(x +5) +4

We want g(20) = 29, so ...

29 = k·√(20 +5) +4

25 = 5k . . . . subtract 4

5 = k . . . . . . divide by 5

The equation of the function is ...

y = 5√(x +5) +4

We assume your "graphing form" is "vertex form", as that form is generally conducive to graphing.

We can complete the square by adding and subtracting the square of half the x-coefficient:

y = x^2 -18x +9^2 +5 -9^2

y = (x -9)^2 -76 . . . . . equation

vertex: (9, -76)

x-intercepts: 9±√76 ≈ {0.2822, 17.1778}

y-intercept: 5 . . . . (the constant in the given equation)

_____

<em>Additional comment</em>

When the quadratic is written in vertex form ...

y = a(x -h)^2 +k

the x-intercepts are h±√(-k/a).

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Please help................

alexira [117]

Answer:

so $2^{8}$ equals 2x2x2x2x2x2x2x2

Step-by-step explanation:

Its that because when expanding Exponents, you always put the first number of the exponet first. like for example, $3^{2}$ , you put the three 2 times and multiply. 3x3

8 0

3 years ago

ad-work [718]

Answer:

Present age

Son: 15

Father: 45

Step-by-step explanation:

Remark

Thank you for the translation. Without it, the problem would be impossible -- at least for me.

Givens

Let the present age of the father = x

Let the present age of the son = y

Solution

x + y = 60

How many years will pass? You could say it's z.

x + z = y When z years pass, the son will be his father's present age.

x + z + y + z = 120 when z is added to both their current ages, the result is 120 Collect like terms

x + y + 2z = 120

<u>x + y = 60 </u> Subtract The very first equation

2z = 60 Divide by 2

z = 60/2 30 years have passed.

z = 30

x + z = y

x + 30 = y Substitute x + 30 for the present y value (the father).

x + x + 30 = 60

2x = 30

x = 15

x + y = 60

15 + y = 60

y = 60 - 15

y = 45

So the son's age right now is 15

The father's age right now is 45

8 0

3 years ago

1. Is (6,7) a solution to the inequality y> 2x - 5?

Zolol [24]

Answer:

$\fbox{\begin{minipage}{8em}Not a solution\end{minipage}}$

Step-by-step explanation:

<em>Step 1: Consider the assumption:</em>

Generally, $(6, 7)$ ) is supposed to be the pair of 2 components, in which, the first component is x-component (domain), the second component is y-component (range).

Hence, $x = 6, y = 7$

<em>Step 2: Substitute </em> $x$ <em> and </em> $y$ <em> into the inequality</em>

$y > 2x - 5$

<=> $7 > 2*6 - 5$

<em>Step 3: Simplify</em>

<=> $7> 12 - 5$

<=> $7 > 7$

<em>Step 4: Evaluate</em>

Invalid

Reason: $7 = 7$

<em>Step 5: Conclude</em>

$(6, 7)$ is not a solution to the inequality $y > 2x - 5$

Hope this helps!

7 0

3 years ago

Which subpart(s) of the 45 cfr 46 is/are sometimes referred to as the common rule?

Olenka [21]

Subpart a is the subpart of the 45 CFR 46 which describes the required protections for all human subjects.

The application of the federal policy regarding Human Subjects Protection to 17 Federal agencies and offices is called the Common Rule. Federal agencies that did not sign the agreement (e.g., Department of Labor, etc.) are exempted from the policy. The Common Rule’s main elements include the following:

<span>1. </span>research institutions’ requirements for assuring compliance

<span>2. </span>obtaining and documenting informed consent requirements for researchers'

<span>3. </span>Institutional Review Board (IRB) membership, operations, function, record keeping, and review of research requirements

The specific vulnerable research subjects’ additional protections are included in the Common Rule.

<span>Additional protections for pregnant women, in vitro fertilization, and fetuses is provided in subpart B.

Additional protections for prisoners is contained in subpart C.</span>

<span>
The same for children is contained in subpart D.</span>

8 0

3 years ago

Solve the question below please

VikaD [51]

Answer:

Step-by-step explanation:

6 0

2 years ago