In need of help PLEASE!!!!​

Answer:

$3.13 after you add the tax.

Answer:

25 a minute

Step-by-step explanation:

4.5*10^4=45000

45000/1800=25

Answer:

Answer:1.5*10^9 years

Step-by-step explanation:

The half life of the substance is given i.e 4.5B years. You can change it into seconds by multiplying it with 365 and 86400.

The current no of particles is given 78.88% which will be equal to 78.88 if you assume the substance had 100 no of particle initially.

Determine the decay constant by dividing 0.69 by half life

use these values in the equation for the answer.

[ln and e are inverse functions to eachother]

Answer:

y=-4

Step-by-step explanation:

The answer is going to be -4 as when y=-16 x=8.

Answer:

\(\sf x=2, \ x = -8\)

solving steps:

\(\hookrightarrow \sf log_4 x+log_4 (x+6)=2\)

\(\hookrightarrow \sf log_4 (x(x+6))=log_4 (16)\)

\(\hookrightarrow \sf log_4 (x^2+6x)=log_4 (16)\)

\(\hookrightarrow \sf x^2+6x=16\)

\(\hookrightarrow \sf x^2+6x-16=0\)

\(\hookrightarrow \sf x^2+8x-2x-16=0\)

\(\hookrightarrow \sf x(x+8)-2(x+8)=0\)

\(\hookrightarrow \sf (x-2)(x+8)=0\)

\(\hookrightarrow \sf x=2, \ x = -8\)

The solution of the logarithmic function is x = 2 and x = -8

The power to which a number must be increased in order to obtain another number is known as the logarithm. A power is the opposite of a logarithm. In other words, if we subtract an exponentiation from a number by taking its logarithm

The properties of Logarithm are :

log A + log B = log AB

log A − log B = log A/B

log Aⁿ = n log A

Given data ,

Let the logarithmic equation be represented as A

Now , the value of A is

log₄ x + log₄ ( x + 6 ) = 2

where 2 = log₄ ( 16 )

From the properties of logarithm , we get

log A + log B = log AB

log₄ x ( x + 6 ) = log₄ ( 16 )

On simplifying , we get

x ( x + 6 ) = 16

x² + 6x - 16 = 0

On factorizing , we get

x² - 2x + 8x - 16 = 0

x ( x - 2 ) + 8 ( x - 2 ) = 0

( x + 8 ) ( x - 2 ) = 0

Hence , the solution is x = -8 and x = 2

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Answer:

6cm,20cm,80cm,1m,1m,1.15m,132cm

Step-by-step explanation:

Hence,1 m=100 cm

Answer:

x = 64

Step-by-step explanation:

Given y is directly proportional to \(\sqrt{x}\) then the equation relating them is

y = k\(\sqrt{x}\) ← k is the constant of proportion

To find k use the condition y = 60 when x = 36, then

60 = k \(\sqrt{36}\) = 6k ( divide both sides by 6 )

10 = k

y = 10\(\sqrt{x}\) ← equation of proportion

When y = 80 , then

80 = 10\(\sqrt{x}\) ( divide both sides by 10 )

8 = \(\sqrt{x}\) ( square both sides )

64 = x

In this scenario, the null hypothesis states that a surgical procedure is successful at least 80% of the time, while the alternative hypothesis claims that it is less than 80% successful.

In hypothesis testing, Type II error occurs when the null hypothesis is not rejected even though it is false. The Type II error, denoted by β, would occur if we fail to reject the null hypothesis even though it is false, i.e., when the actual success rate of the surgical procedure is less than 80%.

Therefore, β represents the probability of accepting the null hypothesis when the alternative hypothesis is true. It is also known as the false negative rate, as it occurs when we fail to detect a significant difference between the sample and population due to random chance or other factors.

The value of β depends on various factors, such as the sample size, significance level, and effect size. To calculate β, we need to specify these values and use statistical software or tables to find the probability of Type II error.

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Answer:

what is it round what to the nearest ten what

Step-by-step explanation:

No, they cannot construct a cube from the square pieces of foam board.

A square has four equal sides. When we multiply the length and width of a square to determine its area, we are essentially squaring one of its sides because they are the same.

A=s²

If we already know the area, we can work backward and take the square root to find the side:

√169=√s²

13=s

13 inches is the side length.

The length, breadth, and height of a cube are all equal. These three measurements are multiplied to determine a cube's volume; since they are equal, this essentially equals cubing the side length:

V=s³

The volume is 1728, so we have the following:

1728=s³

We take the cubed root and move backwards:

∛1728=∛s³

12=s

So, In order to construct a cube with the given volume 12 should be length of the side but the length of the square is 13 so it is not possible.

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a. 1 hour and 45 minutes for the bacteria population to double.

To find out how long it takes for the bacteria population to double, we need to solve the equation:

2p(0) = p(h)

where p(0) is the initial population and h is the time it takes for the population to double.

Since p(h) = \(1000e^{(0.4h)}\), we can write:

2p(0) = \(1000e^{(0.4h)}\)

Dividing both sides by 1000, we get:

2p(0)/1000 = \(e^{(0.4h)}\)

Taking the natural logarithm of both sides, we get:

ln(2p(0)/1000) = 0.4h

Solving for h, we get:

h = ln(2p(0)/1000) / 0.4

We know that p(0) = 1, since the initial population is given as 1,000. Substituting this value, we get:

h = ln(2) / 0.4

h ≈ 1.73

So it takes approximately 1.73 hours for the bacteria population to double.

Rounding to the nearest quarter of an hour.

we get:

h ≈ 1.75 hours

h ≈ 1 hour and 45 minutes

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You are pushing a 40.0 kg crate across the floor. what force is needed to start the box moving from rest if the coefficient of static friction is 0.288?

The force needed to start the box moving from rest if the coefficient of static friction is 0.288 is 112.9 N.

Force is defined as an influence that causes an object to undergo a change in motion. Static friction: Static friction is a type of friction that must be overcome to start an object moving. The force needed to start the box moving from rest can be determined using the formula below:

Force of friction = Coefficient of friction × Normal force where: Coefficient of friction = 0.288

Normal force = Weight = mass × gravity (g) = 40.0 kg × 9.8 m/s² = 392 N

Force of friction = 0.288 × 392 N = 112.896 N (approx)

The force of friction is 112.896 N (approx) and since the crate is at rest, the force needed to start the box moving from rest is equal to the force of friction.

Force needed to start the box moving from rest = 112.896 N (approx) ≈ 112.9 N (rounded to one decimal place)

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Answer:

352/7  is answer

Step-by-step explanation:

If a DTC has not been set, it does not necessarily mean that the vehicle is running perfectly. It simply means that the computer system has not detected a problem that would trigger the code. There could still be issues with the vehicle that are not being reported by the system.

A DTC, or Diagnostic Trouble Code, is a code that is stored in a vehicle's onboard computer system when a problem is detected. The code indicates that there is an issue with a specific component or system in the vehicle. The presence of a DTC usually triggers a warning light on the dashboard or some other type of alert to the driver.
It is important to note that a vehicle's computer system can only detect issues that it is designed to monitor. There may be other problems with the vehicle that are not related to the systems being monitored, such as problems with the suspension, steering, or brakes. These issues would not be detected by the computer system, and could cause problems while driving.
In conclusion, while the absence of a DTC is a good sign, it does not necessarily mean that the vehicle is running perfectly. It is important to perform regular maintenance and inspections to ensure that all systems are functioning properly, regardless of whether or not a DTC has been set.

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Answer: The answer is A.

Step-by-step explanation: (10b + a) = 27 --- 9a - 9b = 27 --- a - b = 3.

Weight of a 24 square foot, 2 inch thick aluminum plate will be: 720 lbs.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

Given:

To find: weight of a 24 square foot, 2 inch thick aluminum plate

Finding:

By unitary method, we get:

Weight of 1 square foot aluminum plate = 15 lbs.

Weight of 24 square foot aluminum plate = 15(24) lbs = 360 lbs.

Again, by unitary method, we get:

Weight of 1 square foot, 1 inch thick aluminum plate = 15 lbs.

Weight of 24 square foot, 1 inch thick aluminum plate = 15(24) lbs = 360 lbs.

Weight of 24 square foot, 2 inch thick aluminum plate = 360(2) lbs = 720 lbs.

Hence, Weight of 24 square foot, 2 inch thick aluminum plate = 720 lbs.

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we can substitute the side length into the formula for the area of an equilateral triangle to calculate the area.

To find the area of the equilateral triangle, we first need to determine the coordinates of its vertices.

Let's consider the vertex A of the equilateral triangle. Since it lies on the parabola defined by y = x^2, and it is parallel to the y-axis, its coordinates can be expressed as (x, x^2).

Since the triangle is equilateral, we can determine the coordinates of the other two vertices by rotating point A by 60 degrees clockwise and counterclockwise.

For the counterclockwise rotation, the coordinates of the second vertex B can be obtained by rotating point A by 60 degrees counterclockwise around the origin. Using the rotation formula, the coordinates of B will be:

B(x', y') = (xcos(60°) - x^2sin(60°), xsin(60°) + x^2cos(60°))

Similarly, for the clockwise rotation, the coordinates of the third vertex C can be obtained by rotating point A by 60 degrees clockwise around the origin. Using the rotation formula, the coordinates of C will be:

C(x'', y'') = (xcos(-60°) - x^2sin(-60°), xsin(-60°) + x^2cos(-60°))

Now, we have the coordinates of all three vertices of the equilateral triangle: A(x, x^2), B(x', y'), and C(x'', y''). To find the area of the triangle, we can use the formula for the area of an equilateral triangle:

Area = (sqrt(3) * side^2) / 4

In this case, the side length of the equilateral triangle can be determined by finding the distance between any two vertices.

Using the distance formula, the side length is given by:

side = sqrt((x' - x)^2 + (y' - x^2)^2)

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Answer:

Step-by-step explanation:

Answer:

350 miles per week

Step-by-step explanation:

That'd be 70 miles each day for 5 days, or 350 miles per week.

Answer:

4

Step-by-step explanation:

The figure can be split into 2 triangles, the larger one is the whole figure with base 18 and height 9. while the other small triangle has base 8 and height h. Since they are both right angled triangles with a shared angle, they are similar.

With similar triangles, we get the ratio of base : height = 8 : 8+10 = h : 9

Hence, 8 : 18 can be simplified to 4 : 9, which is also equal to h : 9. From here, we get h = 4.

Answer:

4

Step-by-step explanation:

The figure can be split into 2 triangles, the larger one is the whole figure with base 18 and height 9. while the other small triangle has base 8 and height h. Since they are both right angled triangles with a shared angle, they are similar.

The value of cv1, the lower critical value, is approximately 54.19.

To find the critical value (cv1) for a two-tailed hypothesis test at a 10% significance level, we need to divide the significance level (α) by 2.

Since α = 0.10, we divide it by 2 to get 0.10/2 = 0.05.

Next, we need to find the z-score associated with the cumulative probability of 0.05.

Using a standard normal distribution table or a calculator, we can find that the z-score for a cumulative probability of 0.05 is approximately -1.645.

Now, we can calculate the critical value by multiplying the z-score by the standard deviation (27) and adding it to the population mean (100).

cv1 = 100 + (-1.645 * 27)
cv1 ≈ 54.19 (rounded to two decimal places)

Therefore, the value of cv1, the lower critical value, is approximately 54.19.

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Answer:

\( 426.96 \: {km}^{2} \)

Step-by-step explanation:

Area of the shaded region = Area of triangle with base 40 km and height 27 km - Area of circle with radius (12/2) 6 km.

\( = \frac{1}{2} \times 40 \times 27 - 3.14 \times {(6)}^{2} \\ \\ = 20 \times 27 - 3.14 \times 36 \\ \\ = 540 - 113.04 \\ \\ = 426.96 \: {km}^{2} \)

The greatest common divisor of 6, 14, and 21 is 1, and it can be written as 6(0) 14(0) 21(1).

To find the greatest common divisor (GCD) of 6, 14, and 21 and write it in the form 6r 14s 21t, we can use the Euclidean algorithm.

Step 1: Find the GCD of 6 and 14.
- Divide 14 by 6: 14 ÷ 6 = 2 remainder 2
- Replace 14 with 6 and 6 with 2: Now we have 6 and 2.
- Divide 6 by 2: 6 ÷ 2 = 3 remainder 0
- Since the remainder is 0, the GCD of 6 and 14 is 2.

Step 2: Find the GCD of the result from step 1 (2) and 21.
- Divide 21 by 2: 21 ÷ 2 = 10 remainder 1
- Replace 21 with 2 and 2 with 1: Now we have 2 and 1.
- Divide 2 by 1: 2 ÷ 1 = 2 remainder 0
- Since the remainder is 0, the GCD of 2 and 21 is 1.

Therefore, the GCD of 6, 14, and 21 is 1. In the given form 6r 14s 21t, r would be 0, s would be 0, and t would be 1.

So, the GCD of 6, 14, and 21 is 1, and it can be written as 6(0) 14(0) 21(1).

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Answer:

17 * 2 = 34

-10 + (-9) = -19 or -29 + 10 = -19

Step-by-step explanation:

For the first question, divide 34 * 2 and you get 17, DOUBLE CHECK YOUR ANSWER!

17*2 = 34 ✔

For the second, mess around with a few numbers add +10 and -29,  COUNT DOWN from 10 and -29.

since + + + = + then - + - = -

if 10+9=19 then do the same with -

-10 + (-9) =-19

~R3V0

Answer:

-17, -2 work for both of them

Step-by-step explanation:

Answer: -5  < x < -2 or (-5, -2)

Step-by-step explanation:

Graph- (-5, -2)

Inequality- -5  < x < -2

Answer:    MULTIPLY 32 BY 64 THEN DIVIDE THAT AWNSER BY 20

Step-by-step explanation:

Answer:

Step-by-step explanation:

By the Triangle Sum Theorem, ∠ABD = 58° and ∠BCD = 26°. Therefore, you can use the Law of Sines in ΔABC which states that

Answer:

No solution

Step-by-step explanation:

Let's solve your system by elimination.

−2x+14y=−29;x−7y=19

Multiply the second equation by 2, then add the equations together.

(−2x+14y=−29)

2(x−7y=19)

Becomes:

−2x+14y=−29

2x−14y=38

Add these equations to eliminate x:

0=9

Answer:

n=36

a=403

d=395-403=8

an=a+(n-1)d

a36=403+(36-1)395

=14228

Answer:

the answer is actually 123

Step-by-step explanation:

Answer:

b hope this helps mark me brainlist

Step-by-step explanation: