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pickupchik [31]
3 years ago
9

Find the length x. pls help

Mathematics
1 answer:
scoray [572]3 years ago
4 0

Answer:

x = 6

Step-by-step explanation:

To find x we set up an  equation as so:

\frac{4.5}{x} =\frac{6}{8}

Then we solve by multiplying 4.5 by 8 and 6 by x

6x=36    Solve for x

\frac{6x}{6} =\frac{36}{6}    x = 6

To check our answer when we substitute x or 6 we divide to make sure both sides equal the same number

\frac{4.5}{6} =\frac{6}{8}    when divided both equals 0.75

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(1 point) Consider the function f(x)=2x3−9x2−60x+1 on the interval [−4,9]. Find the average or mean slope of the function on thi
OlgaM077 [116]

Answer: c = 4.97 and c = -1.97

Step-by-step explanation: <u>Mean Value Theorem</u> states if a function f(x) is continuous on interval [a,b] and differentiable on (a,b), there is at least one value c in the interval (a<c<b) such that:

f'(c) = \frac{f(b)-f(a)}{b-a}

So, for the function f(x) = 2x^{3}-9x^{2}-60x+1 on interval [-4,9]

f'(x) = 6x^{2}-18x-60

f(-4) = 2.(-4)^{3}-9.(-4)^{2}-60.(-4)+1

f(-4) = 113

f(9) = 2.(9)^{3}-9.(9)^{2}-60.(9)+1

f(9) = 100

Calculating average:

6c^{2}-18c-60 = \frac{100-113}{9-(-4)}

6c^{2}-18c-60 = -1

6c^{2}-18c-59 = 0

Resolving through Bhaskara:

c = \frac{18+\sqrt{1740} }{12}

c = \frac{18+41.71 }{12} = 4.97

c = \frac{18-41.71 }{12} = -1.97

<u>Both values of c exist inside the interval [-4,9], so both values are mean slope: c = 4.97 and c = -1.97</u>

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4 years ago
Select the choice that translates the following verbal phrase correctly to algebra:
zimovet [89]
The answer is:
(M - 7) +15
7 0
3 years ago
Find f(x) if it is known that f(x+3)=5x+15.
victus00 [196]

Answer:

The function is "f(x) = 5*x"

Step-by-step explanation:

Everytime we add a number to the independent variable of a function, in this case x, there'll be a common factor between the variable and a pure number. To solve this problem we need to make "(x + 3)" appear. Since we have "f(x+3)" we need to first factor the common denominator. We have:

f(x + 3) = 5*(x + 3)

Therefore,

f(x) = 5*x

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4 years ago
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Make a diagonal line like this / connected to it make the same / but mirrored or backwards underneath make a connecting like this _
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3 years ago
The volume of a sphere with radius r is 4 3 πr 3 . what is the volume of a sphere with radius 5
MA_775_DIABLO [31]
Sphere volume = (4/3) PI * radius ^ 3
sphere volume = (4/3) PI * 5 ^ 3
sphere volume = (4/3) PI * 125
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<span>sphere volume = 523.6 (rounded)

</span>

3 0
3 years ago
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