What are all values of x for which the function f defined by f(x)=x3+3x2−9x+7 is increasing ?
(A) −3 (B) −1 (C) x<−3 or x>1
(D) x<−1 or x>3
(E) All real numbers.

Answer:

5x   y=0

Step-by-step explanation:

Answer:

40/x = y

Step-by-step explanation:

Inverse variation is of the form

y = k/x,

where k is a number.

The only choice that follows that form is 40/x = y which can be rewritten as y = 40/x

Answer: 40/x = y

Answer:

Im not sure so I'm going to I think it is a better a, c, and f

Answer:

C and F are the answers but I'm not sure

Answer:

x = 20° and y = 12°

Step-by-step explanation:

3y + 15° = 5y - 9° ( being opposite angles of parallelogram)

5y - 3y = 15° + 9°

2y = 24°

y = 24° / 2

y = 12°

Now

5x + 29° = 7x - 11° ( being opposite angles of parallelogram)

7x - 5x = 29° + 11°

2x = 40°

x = 40° / 2

x = 20°

Hope it will help :)❤

Answer:

h = 12t

Step-by-step explanation:

Its given that x = 3t.

Also its given that h = 4x

Substituting the value of x gives =

h = 4(3t) = 4 × 3t = 12t

Answer:

green

Step-by-step explanation:

11a^3−4a^2−14a−7

Answer:

11a³-4a²-14a-7

(The light blue/green one)

Step-by-step explanation:

We'll need to combine like terms (terms with the same variables and exponents)

(4a³-8a-4a²)+(7a³-7-6a)

add/subtract

we'll keep -4a² and -7 as is as there aren't any other terms like them

11a³-14a-4a²-7

put into standard form:

11a²-4a²-14a-7

(The light blue/Green one)

Hope this helps!

there is no solution here. i checked, trust me.

The System of Equation have No Solution.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

6x - 12y = 15................(1)

2x - 4y = 6...........(2)

Now, Multiply equation (2) by 3 we get

6x - 12y = 15

6x - 12y = 18

____________

           0 = -3

also, 6/2 = -12/ (-4) ≠ 15/6 which is parallel lines.

So, the equation have No solution.

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Given:

Sample mean = 65.4

Standard deviation = 1.2

Sample size = 45

Confidence level = 99%

To find:

The confidence interval.

Solution:

The formula for confidence interval is

[tex]CI=\overline{x}\pm z^*\dfrac{s}{\sqrt{n}}[/tex]

where, [tex]\overline{x}[/tex] is sample mean, z* is confidence value, s is standard deviation and n is sample size.

Confidence value or z-value at 99% = 2.58

Putting the given in the above formula, we get

[tex]CI=65.4\pm 2.58\times \dfrac{1.2}{\sqrt{45}}[/tex]

[tex]CI=65.4\pm 0.46[/tex]

[tex]CI=65.4-0.46\text{ and }CI=65.4+0.46[/tex]

[tex]CI=64.94\text{ and }65.86[/tex]

Therefore, the correct option is D.

Answer:

the answer is, 64.94 and 65.86

Step-by-step explanation:

Answer:

29,028.87

Step-by-step explanation:

Just add 8,707.37 and the height of Mt. McKinley.

Answer:

Step-by-step explanation:

13d + 8 = -1

subtract 8 from both sides

13d = -9

d = -9/13

either keep it in fraction form or if you divide it out it is -0.6923

Answer: 0.3063 * 10^-1

Step-by-step explanation: hope this helps!

Answer:

Order of operations was not used correctly, Do what is inside the parenthesis first. So use the distributive property first and not subtraction.

Step-by-step explanation:

6-4(3-6x)+12x

Answer:

17 tkrnfuebdkrheejshdhfd

Answer:

6 slices per cake

Step-by-step explanation:

you have 2 cakes and they have 12 total slices which means each cake has 6 slices

Answer:

d. 6

Step-by-step explanation:

Answer:

D: 6

Step-by-step explanation:

The Main Rules Are:

1) A negative number times a negative number is a positive number.

2) A positive number times a positive number is a positive number.

3) A negative number times a positive number is a negative number.

This problem is read as negative 1 times negative 6. Any negative symbol in front of a parentheses would be read as negative 1. In other words, the problem reads -1(-6). Remember, a negative number times a negative number is a positive number. Multiplying negatives is no different than multiplying numbers greater than zero, you just change the sign of the answer. Lets read this as 1 times 6 which is 6. Therefore, -1 times -6 is 6.  

Hope that helped, as well as explained the concept :)  

Answer:

(E) 16.1157

Step-by-step explanation:

Q has geometric distribution with p = 0.22

"Variance of Q" V(Q) = 1 - p / p²

V(Q) = 1 - 0.22 / 0.22²

V(Q) = 0.78 / 0.0484

V(Q) = 16.11570247933884

V(Q) = 16.1157

So, the Variance of random variable Q is 16.1157

This question is based on the variance. Hence, the correct option is D i.e. 16.1157 is closest to the variance of the random variable.

Given:

Community speak a language other than English at home  = 22 percent

Let random variable Q represent the number of attempts needed.

The random variable Q has a geometric distribution with p=0.22.

We need to determined the closest to the variance of random variable.

As we know that,

Q has a geometric distribution with p=0.22

Now calculate the variance of Q,

[tex]V(Q)=\dfrac{1-p}{p^{2} }[/tex]

[tex]V(Q)=\dfrac{1-0.22}{0.22^{2} }[/tex]

[tex]V(Q)=\dfrac{0.78}{0.484} }[/tex]

Therefore, the variance  V(Q) is 16.1157.

Hence, the correct option is D i.e. 16.1157 is closest to the variance of the random variable.

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Step-by-step explanation:

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❁ [tex] \underline{ \underline{ \text{ \: To \: find}}}: [/tex]

✑ [tex] \underline{ \underline{ \text{Solution}}} : [/tex]

[tex] \boxed{ \underline{ \sf{Momentum \: = \: mass \: \times \: velocity}}}[/tex]

plug the known values :

⟹ [tex] \sf{Momentum = 4.0 \: kg \: \times \: 2.0 \:m/s } [/tex]

⟹ [tex] \sf{Momentum = 8 \: kg \: m/s}[/tex]

[tex] \red{ \boxed{ \boxed{ \tt{⟿ \: Our \: final \: answer : \bold{ \underline{8} }\: kg*m/s}}}}[/tex]

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✑ [tex] \underline{ \underline{ \text{Learn \: more about \: momentum}}}: [/tex]

Imagine that a car and a truck both have the same speed on the road. Which one can stop easily ? Of course , it is hard to stop the truck relative to the car. The reason is that the car and the truck have the same speed bit different masses. Thus , we can say that to stop a heavier body is harder than to stop a lighter one even both of them have the same speed.

If two tennis balls are hit towards you in different velocities , it is not equally easier to stop them. The ball in more velocity is difficult to stop relatively. Thus , we can say that to stop a body in more velocity is harder than to stop a body with less velocity , eventhough they have the same speed.

The physical quantity that describes the quantity of motion of a body is called momentum. The momentum of a moving body or linear momentum is defined as the product of mass & velocity of a moving body.

Mathematically ,

Momentum = mass × velocity

i.e p = m × v

The SI unit of momentum is kg • m/s. Since velocity is a vector quantity and multiplied with mass ( scalar quantity) , momentum becomes a vector quantity. Direction of momentum is the same as velocity.

Hope I helped ! ♡

Have a wonderful day / night ツ

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Answer:

A. 21/40

B. 8/12 or 2/3

Step-by-step explanation:

Answer:

The slope is 3

Hence the x-coordinate of the x- intercept is 2

Hence the y-coordinate of the y- intercept is -6

Step-by-step explanation:

We are to first write the statement  six less than triple some quantity as an expression:

let the quantity be x

Triple the quantity to have 3x

six less than triple some quantity will be expressed 3x - 6

The required function is f(x) = 3x - 6

This is in standard form of equation of a line y = mx+c

m is the slope

c is the y-intercept

Comparing 3x - 6 with mx+c

3x = mx

3 = m

m = 3

The slope is 3

x intercept occurs at when f(x) = 0

Substitute into f(x) = 3x-6

0 = 3x-6

-3x = -6

x = 2

Hence the x-coordinate of the x- intercept is 2

y intercept occurs at when x = 0

Substitute into f(x) = 3x-6

f(x) = 3(0)-6

f(x) = -6

Hence the y-coordinate of the y- intercept is -6

Answer:

Step-by-step explanation:

3/5 is equivalent with 12/20, 30/50

3*4=12,   3*10=30

5*4=20,   5*10=50

Answer:

180 - 132degrees

Step-by-step explanation:

interior angle

48 ?!?

no sure doee

hope it helps

Answer:

3209

Step-by-step explanation:

Answer:

3/5 are 6/10, 9/15 and 12/20.

Step-by-step explanation:

You would use d) power of a power because:

(Answer:

Which law would you use to simplify the expression (x^4)^9 ?

A)product of powers

B)power of a product

C)power of a quotient

D)power of a power

Step-by-step explanation:

x^4)^9

= (x^(4*(9))

= x^36

hope this helps

The law used to simplify the given expression (x⁴)⁹ is D) Power of a power law.

Exponents are the method of writing numbers, especially large numbers, in terms of a base and an exponent, which is written as the power of base.

Given expression is (x⁴)⁹.

Power of a power rule is the rule of the exponents which states that if a number in the base is raised to some power, which is again raised to another power, then both the powers will get multiplied leaving the base as same.

We can use this rule here, since the base x is raised to 4, which is again raised to 9.

Using the rule,

(x⁴)⁹ = (x)⁽⁴⁾⁽⁹⁾ = x³⁶

Hence the rule used is power of a power rule.

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Your question is incomplete. The complete question is as given below.

Which law would you use to simplify the expression (x⁴)⁹ ?

A)product of powers

B)power of a product

C)power of a quotient

D)power of a power

Hey there!

All you have to do is DISTRIBUTE

Here’s the formula:

a(b + c) = a(b) + a(c) = ab + ac

NOW LETS SOLVE FOR YOUR QUESTION

• 3a(a – 4b)

• 3a(a) + 3a(4b)

• 3a(a) = 3a² ⬅️ FRONT number

• 3a(4b) = 12ab ⬅️ BACK number

• Answer: 3a² + 12ab ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Step-by-step explanation:

[tex]\huge{\underbrace{\overbrace{\mathfrak{\pink{Answer:}}}}}[/tex]

The binomial theorem states that for some a,b∈R and some k ∈Z+ ,

(a+b)k=∑n=0k(kn)ak−nbn.

The binomial series allows us to use the binomial theorem for instances when k is not a positive integer. The binomial series applies to a given function f(x)=(1+x)k for any k∈R with the condition that |x|<1 . It is stated as follows:

(1+x)k=∑n=0∞(kn)xn .

Note that the binomial theorem produces a finite sum and the binomial series produces an infinite sum.

The binomial series enables us to apply the binomial theorem when k is not a positive integer.

The binomial theorem (or binomial expansion) in elementary algebra describes the algebraic expansion of binomial powers.

The binomial theorem states that for some a,b∈R and some k ∈Z+ ,

(a+b)k=∑n=0k(kn)ak−nbn.

The binomial series allows us to use the binomial theorem for instances when k is not a positive integer. The binomial series applies to a given function f(x)=(1+x)k for any k∈R with the condition that |x|<1 . It is stated as follows:

(1+x)k=∑n=0∞(kn)xn.

Hence, when k is not a positive integer, we can use the binomial series to apply the binomial theorem.

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Answer:

its D

Step-by-step explanation:

got it right on edge

Answer:

d

Step-by-step explanation:

edge 2021