i need a good answer​

Answer:

39

Step-by-step explanation:

The answer is = 39

1 to the pwer of 1 = 1

3 to the power of 3 = 27

The dragster, starting from rest and accelerating at 32 m/s², reaches a speed of 128 m/s after 4.0 seconds.

A dragster starting from rest means that its initial velocity is zero. The dragster's acceleration is given as 32 m/s². To determine the speed of the dragster after 4.0 seconds, we can use the equation of motion:

where:

v = final velocity

u = initial velocity (which is 0 m/s since the dragster starts from rest)

a = acceleration (32 m/\(s^2\) in this case)

t = time (4.0 seconds in this case)

Substituting the given values into the formula:

v = 0 + (32 m/\(s^2\))(4.0 s)

v = 0 + 128 m/s

v = 128 m/s

Therefore, the dragster is traveling at a speed of 128 m/s after 4.0 seconds of acceleration.

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The following to help her make her recommendations.

\(\mu\) = 25 min

\(\sigma=\)  13 min

n= 20.

\(\mu_{\bar{x}}=\mu\) = 25 min

An indicator of how much a group of numbers vary or are dispersed is the standard deviation. When the standard deviation is low, the values tend to fall within a narrow range of the set's mean, but when it is large, the values tend to deviate from that mean more.

The random variable X should stand in for how long it takes for a specific brand of ibuprofen to start working.

(a)

A certain brand of ibuprofen typically starts acting after 25 minutes.

Which is. \(\mu\) = 25 min

(b)

A specific brand of ibuprofen has a 13-minute standard variation for when it begins to work.

Which is. \(\sigma=\) 13 min

(c)

A pharmacist has chosen a 20-piece sample.

Which is. n= 20.

(d)

The sample means' mean is:

\(\mu_{\bar{x}}=\mu\) = 25 min

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I understand that the question you are looking for is:

The average time it takes a certain brand of ibuprofen to start working is 25 minutes, with a standard deviation of 13 minutes, distributed normally. A pharmacist randomly samples 20 pills from this brand, because she is researching different brands in order to find the quickest acting ibuprofen to recommend to her customers. Identify the following to help her make her recommendations, rounding to the nearest hundredth if necessary:

a. mu = ______ minute

b. sigma = ______ minute

c. n = ______

d. mu-x = _______ minute

It should be noted that 15% rebate on a $75 printer will be $11.25.

It should be noted that a rebate is a special kind of purchasing discount that refers to a sum that is retroactively reduced, returned, or refunded. Marketers typically employ this kind of sales promotion as incentives or add-ons to product sales.

It should be noted that 15% rebate on a $75 printer will be:

= Rebate percentage × Amount

= 15% × $75

= 0.15 × $75

= $11.25

Therefore, it should be noted that 15% rebate on a $75 printer will be $11.25.

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Answer:

to me it look like a reflection

Step-by-step explanation:

note in photo

Part A: The volume of that prism is 12x³ + 71x² + 97x + 20. Part B: The volume of the construction piece shown in the diagram is 10x³ + 54x² + 54x - 8.

A rectangular prism is a three-dimensional shape that is characterized by its six rectangular faces. It is also known as a rectangular parallelepiped or a cuboid. The rectangular prism has three pairs of parallel faces, and each face is perpendicular to the adjacent faces.

The rectangular prism has eight vertices (corners) and 12 edges. The length, width, and height of the rectangular prism are typically denoted as l, w, and h, respectively. The volume V of a rectangular prism is given by the formula:

V = lwh

The surface area S of a rectangular prism is given by the formula:

S = 2lw + 2lh + 2wh

where lw, lh, and wh are the areas of the six rectangular faces.

Some common examples of rectangular prisms in everyday life include boxes, bookshelves, and bricks. Rectangular prisms are used in architecture, engineering, and construction for building structures such as buildings and bridges. They are also used in mathematics and physics to model real-world situations, such as calculating the volume and surface area of a container.

Part A: The formula of volume of rectangular prism= length × width × height

V = (x+4)(4x+1)((3x+5) = 12x³ + 71x² + 97x + 20

The volume of that prism is 12x³ + 71x² + 97x + 20.

Part B:

(x+1)(2x+7)(x+4)= 2x³ + 17x² + 43x + 28
The volume of prism - the missing part

12x³ + 71x² + 97x + 20 - 2x³ + 17x² + 43x + 28 = 10x³ + 54x² + 54x - 8.

The volume of the construction piece shown in the diagram is 10x³ + 54x² + 54x - 8.

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Answer:

Sam = 6 years

Linda = 22 years

Step-by-step explanation:

this is best solved by using an algebraic equation

let Sam's age be x

let Linda's age be 4x

now that we defines our variables let's make an algebraic equation

the sum of their ages is 28 so

4x + x = 28

combine like terms

5x = 28

find for x

x = 28÷ 5 = 5.6 (don't approximate yet let's take the raw age)

Sam is 5.6 years

Linda is 4 years older so we multiply Sam's age by 4

4 × 5.6 = 22.4

Linda is 22.4 years

now let's round our answers to the nearest whole

5.6 ~ 6 years

22.4 ~ 22 years

let's double check and add our answers now

22 + 6 = 28

the answer is correct

Answer: B

Step-by-step explanation:

The answer is B.

When the sign is < or >, this means that the line is dashed, as it does not include those points as part of the solution. When the sign is \(\leq\) or \(\geq\), the line is solid, since the points on it are part of the solution.

Knowing this, we can eliminate A and D.

In order to find out if the shaded part is above or below, you must know that if the sign is less than (< or \(\leq\)), than the area underneath it will be shaded, and if the sign is greater than (> or \(\geq\)), that the area above it will be shaded.

So, this leaves us with B as the only answer choice, since the line is dashed and must be below the line.

Hello! :)

The slope of this line is 0.

Remember, to find the slope, we divide the rise by the run. The rise is how many units we move up; the run is how many units we move right or left.

Here, we move 0 units up, so the rise is 0.

No matter what the run is, the slope is 0 anyway.

Hope it helps you!

If you have any questions, feel free to ask! (:

~An excited gal

\(SparklingFlower :)\)

Answer:

its 0 sowe

Step-by-step explanation:

Answer:

Miguel's account: M(x) = 320 + 85x

Kala's account: K(x) = 820 + 35x

b) To find when the two accounts would have the same amount of money, we need to set M(x) equal to K(x) and solve for x:

320 + 85x = 820 + 35x

Simplifying the equation, we get:

50x = 500

Dividing both sides by 50, we get:

x = 10

Therefore, the two accounts would have the same amount of money after 10 months.

Answer:

x=-5

Step-by-step explanation:Step 1: Simplify both sides of the equation.

8x−5(4x+3)−(3−2x)=4−4(2x−3)−(9−3x)

8x−5(4x+3)+−1(3−2x)=4−4(2x−3)+−1(9−3x)(Distribute the Negative Sign)

8x+−5(4x+3)+(−1)(3)+−1(−2x)=4+−4(2x−3)+(−1)(9)+−1(−3x)

8x+−5(4x+3)+−3+2x=4+−4(2x−3)+−9+3x

8x+(−5)(4x)+(−5)(3)+−3+2x=4+(−4)(2x)+(−4)(−3)+−9+3x(Distribute)

8x+−20x+−15+−3+2x=4+−8x+12+−9+3x

(8x+−20x+2x)+(−15+−3)=(−8x+3x)+(4+12+−9)(Combine Like Terms)

−10x+−18=−5x+7

−10x−18=−5x+7

Step 2: Add 5x to both sides.

−10x−18+5x=−5x+7+5x

−5x−18=7

Step 3: Add 18 to both sides.

−5x−18+18=7+18

−5x=25

Step 4: Divide both sides by -5.

−5x −5 = 25 −5

x=−5

Answer:

\(\huge\boxed{\sf x = 60\°}\)

Step-by-step explanation:

So,

100 + x + 20 = 180

x + 120 = 180

x = 180 - 120

x = 60°

\(\rule[225]{225}{2}\)

Answer:

28,000

Step-by-step explanation:

multiply 7 cars with 4,000

Answer:

i think 4 feet tall

Step-by-step explanation:

i think if it is wrong im sorry i tried

Answer:

37.7ft³

Step-by-step explanation:

Answer:

265

Step-by-step explanation:

9+(8x8x8/2) = 9+(512/2) = 9+256 = 265

Answer:

A bird drops a stick to the ground from a height of 80 feet. The equation 0=−16x2+64x+80 gives the number of seconds that have passed when it hits the ground. After about how many seconds did the stick hit the ground?

Step-by-step explanation:

h = -16t^2 + 80   Stick hits the ground when h = 0:

0 = -16t^2 + 80    

16t^2 = 80

t^2 = 80/16 = 5

t = POSITIVE root 5 (due to the real world nature of the problem)

t approximately 2.236 seconds.

========================================

Graph is a downward opening parabola with h-intercept of 80, t-intercept(s) of sqrt(5), - sqrt(5)

Symmetric about h-axis, though I would only graph on the right side of the h-axis since  

that is where t >= 0.

Answer:

0

Step-by-step explanation:

Chalice with purified water = 4

With spoiled milk = 5

With flat soda = 6

Probability of Jones drinking from a chalice with purified water after Donovan had drank from 3 = 1/3

Probability = required outcome / Total possible outcomes

Total possible outcomes = (4 + 5 + 6) = 15

After Donovan drinks 3 :

Total possible outcomes = (15 - 3) = 12

If the probability of Jones choosing a chalice with purified water is 1/3 then :

(Required outcome / Total possible outcomes) =1 /3

(Required outcome / 12) = 1 / 3

Required outcome * 3 = 12

Required outcome = 12 / 3

Required outcome = 4

Therefore, since initial number of chalice with purified water is 4,

4 - 4 = 0

Then Donovan did not drink from a chalice containing purified water.

Answer:

MN

Step-by-step explanation:

Because the radius is a half of a diameter

Pythagorean Theorem: a^2 + b^2 = c^2

---a and b are the legs of the triangle

---c is the hypotenuse/diagonal

a = 6

b = 1

c = ?

(6)^2 + (1)^2 = c^2

36 + 1 = c^2

37 = c^2

c = 6.0827

c (rounded) = 6.1

Answer = 6.1 meters

a. the integral \(I\) becomes \(\[I = a\theta + \sin(\theta) + C\]\) where \(\(C\)\) is the constant of integration. b. the integral \(I\) becomes \(\[I = \frac{1}{2}a\theta^2 + \sin(\theta) + C\]\) where \(\(C\)\) is the constant of integration.

To evaluate the integral \(I = \int (a + \cos(\theta)) \, d\theta\), we can apply the integral rules and properties. Let's consider the two given cases:

(a) If \(a > 1\):

In this case, the integral can be evaluated directly. The integral of \(a\) with respect to \(\theta\) is \(a\theta\), and the integral of \(\cos(\theta)\) is \(\sin(\theta)\). Therefore, the integral \(I\) becomes:

\[I = a\theta + \sin(\theta) + C\]

where \(C\) is the constant of integration.

(b) If \(a = a_0 + i e\), where \(a_0\) and \(e\) are real and positive:

In this case, the integral can also be evaluated using the same rules. The integral of a constant multiplied by a variable is \(\frac{1}{2}a\theta^2\), and the integral of \(\cos(\theta)\) is \(\sin(\theta)\). Therefore, the integral \(I\) becomes:

\[I = \frac{1}{2}a\theta^2 + \sin(\theta) + C\]

where \(C\) is the constant of integration.

It's important to note that the integral is evaluated based on the assumption that \(d\theta\) is the differential of \(\theta\) and not a different variable. Also, \(C\) represents the constant of integration, which can take any value.

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The correct hypothesis statement for this golfer to prove his claim would be:

\(H_{0} :u\geq 90\)

\(H_{1} :u < 90\)

The golfer claims that his average score is less than 90.

Therefore, the null hypothesis is the opposite of what he claims

Null hypothesis \(H_{0}\) is average score \(u\) is greater than or equal to 90:

\(u \geq 90\)

\(H_{0} :u\geq 90\)

Alternative hypothesis \(H_{1}\) is then the opposite of null hypothesis.

Hence alternate hypothesis \(H_{1}\) is u< 90

\(H_{1} :u < 90\)

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Answer:

653.45

Step-by-step explanation:

The solution of each equation

a) x = 0.571

b) x = 1.405

c) x = 1.579

d) x = 1.152

e) x = -1.245

f) x = 1.324

Exponential and logarithmic equations can be solved by applying the appropriate rules and properties of exponential and logarithmic functions.

The solutions to the given equations are as follows:

a) The solution to \(4^{(3x-5)\) = 16 is x = 0.571. This is found by expressing both sides with the same base and solving for x.

b) The solution to \(3e^x\) = 10 is x = 1.405. By isolating the exponential term and applying logarithmic functions, we can solve for x.

c) For \(5^{(2x - 1)\) = 20, the solution is x = 1.579. Similar to the previous equation, logarithmic functions are used to solve for x.

d) The solution to \(2^{(x+1)} = 5^{(2x)\) is x = 1.152. Again, logarithmic functions are employed to solve for x.

e) In \(28^x = 10^{(-3x)\), the solution is x = -1.245. By equating the exponential terms with the same base, we can solve for x.

f) The solution to \(e^x + e^{(-x)\) = 5 is x = 1.324. This equation can be solved by recognizing it as a quadratic form.

Exponential and logarithmic equations can be solved using various techniques, such as expressing both sides with the same base, applying logarithmic functions, or recognizing quadratic forms.

These methods enable finding the values of x that satisfy the given equations. Understanding the properties and rules of exponential and logarithmic functions is crucial in effectively solving such equations.

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The constant of proportionality between earnings and time in hours is equal to 21.1.

In Mathematics, a proportional relationship is a type of relationship that generates equivalent ratios and it can be modeled or represented by the following mathematical expression:

y = kx

Where:

In order to have a proportional relationship and equivalent ratios, the variables x and y must have the same constant of proportionality.

Next, we would determine the constant of proportionality (k) as follows:

y = kx

Constant of proportionality (k) = y/x

Constant of proportionality (k) = 274.30/13 = 337.60/16 = 464.20/22

Constant of proportionality (k) = 21.1

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Answer:

The 11 foot boat ways 187 pounds

Step-by-step explanation:

102 / 6 = 17

17 * 11 = 187

Answer:

-2 ; -1 ; 0 ; 1

Step-by-step explanation:

the inequality is satisfied in this interval [-2.5,1].

We are searching the integers: -2 ; -1 ; 0 ; 1

All the values of x that satisfy the inequality will be;

⇒ x = - 2, - 1, 0, 1

What is Inequality?

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The inequality is given.

Now,

The solution of the inequality are given as;

⇒ x ∈ [- 2.5, 1]

But we can find the integers which satisfy the inequality.

Hence, All the values of x that satisfy the inequality will be;

⇒ x = - 2, - 1, 0, 1

Thus, All the values of x that satisfy the inequality will be;

⇒ x = - 2, - 1, 0, 1

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