Please let me know this is a practice quiz and my teacher is not explained

Answer:

The answer is 1 over 3.

Step-by-step explanation:

All you had to do was simplify it.

Given,

No. of photos Marcus took on his cell phone = 18

Ratio of photos took by Marcus and Maribel = 3:4

Let the no. of photos took by Maribel be \(x\).

∴ \(\frac{18}{x} = \frac{3}{4}\)

⇒\(3x = 72\)

⇒ \(x = \frac{72}{3} = 24\)

Hence, Maribel took 24 photos.

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Answer:Its F

Step-by-step explanation:

Answer:

Letter i

Step-by-step explanation:

BeCuAsE A rAtIoNaL NuMbEr Is A NuMbEr ThAt CaN Be MaDe InTo A FrAcTiOn AnD I CaNt Be MaDe InTo A FrAcTiOn.

The cost of the apples is 2.9 dollars.

The cost of the bananas is 5.7 dollars.

The total cost is 6 dollars, each apple cost $1.50 each banana cost $.30 and there’s two more bananas then apples.

Therefore,

let

x = number of apples

y = 2x

where

Therefore, using equations,

1.5(x) + y(0.30) = 6

Hence,

where

y = 2x

1.5(x) + 2x(0.30) = 6

1.5x + 0.6x = 6

2.1x = 6

divide both sides by 2.1

x = 6 / 2.1

x = 2.9 dollars

y = 2(2.9) = 5.7 dollars

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According to Gopnik, to ask babies what they think, scientists must use experimental methods.

The 18-month-olds had a more advanced understanding of language and object permanence.

Gopnik states that a long childhood gives the child a great deal of time to learn from and interact with their environment.

By saying "the children are doing statistics" Gopnik means that babies are capable of forming and processing complex patterns of information.

I believe babies are less conscious than adults.

According to Gopnik, the way to ask babies what they think is through experiments that test their abilities and responses to different situations such as showing them images of objects and measuring their eye-movement or using language probes and examining their response to questions. For example, she discusses an experiment where babies are shown a box with a toy inside and then the box is moved to a different location. The babies are then observed to see if they look for the toy in the new location or the old location. This can give insight into their understanding of object permanence.

The difference between the responses of the 15-month-old and the 18-month-old babies in the experiment was that the 15-month-olds tended to look for the toy in the old location, while the 18-month-olds looked for it in the new location. This suggests that the 18-month-olds have a better understanding of object permanence than the 15-month-olds.

Gopnik discusses a correlation between a long childhood and knowledge and learning by explaining that humans have a longer childhood than other animals, which allows for more time to learn and acquire knowledge. This extended period of learning is what allows humans to develop complex skills and abilities.

When Gopnik mentions that "the children are doing statistics," she means that they are making predictions and drawing conclusions based on the information they have observed. For example, if a child sees that a ball always bounces when it is dropped, they will predict that it will bounce the next time it is dropped.

In my opinion, babies are more conscious than adults in some ways and less conscious in others. Babies are more aware of their immediate surroundings and are constantly taking in new information and learning from it. However, they are less conscious of abstract concepts and long-term consequences than adults.

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SOLUTION

Using trigonometric ratios, it follows

Therefore the required answer is:

To determine whether Melissa can apply two coats of paint to the entire sculpture with a can of spray paint that covers 6,500 square centimeters need to consider the surface area of the sculpture and the amount of paint required for two coats.

Let's assume the sculpture has a total surface area of S square centimeters.

To apply one coat of paint to the entire sculpture, Melissa would need approximately S square centimeters of paint.

The can of spray paint covers 6,500 square centimeters, it would be sufficient to cover the sculpture with one coat.

A second coat of paint, Melissa would need an additional S square centimeter of paint.

The first coat has already covered the sculpture, the second coat would only require coverage of any missed spots or areas that need additional touch-up.

The amount of paint required for the second coat would generally be less than the amount required for the first coat.

Considering these factors, it is likely that Melissa can apply two coats of paint to the entire sculpture with a can of spray paint that covers 6,500 square centimeters.

The actual feasibility would depend on the size and complexity of the sculpture, as well as the efficiency of Melissa's painting technique.

If the sculpture has a significantly larger surface area than 6,500 square centimeters, or if it has intricate details that require a substantial amount of touch-up, Melissa may require additional cans of spray paint to achieve two coats.

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The net force acting on the object is 3456 N, the objective with an acceleration.

The net force applied to an object is equal to the product of its mass and acceleration, according to Newton's second law of motion. Mathematically, this can be represented as:

Fnet = ma

Where Fnet is the net force, m is the mass, and a is the acceleration. In your scenario, the net force applied to the object is 125 N, and its acceleration is 24.0 m/s2. Therefore, we can rearrange the formula and solve for the mass of the object as follows:

m = Fnet / a
m = 125 N / 24.0 m/s2
m = 5.21 kg

However, this answer does not match the given mass of the object, which is 144 kg. This suggests that there may be an error in one of the values provided. Assuming the mass of the object is actually 144 kg, we can use the same formula to solve for the net force acting on it as follows:

Fnet = ma
Fnet = 144 kg * 24.0 m/s2
Fnet = 3456 N

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The mass of an object with net force value = 125 Newton and acceleration of 24.0 m/s² is equals to the 5.208 kg. So, option(c) is right one.

The force formula is derived by Newton's second law of motion. The basic formula force applied on object is F = ma, which implies that net force is equals to product of mass and acceleration of an object. We have an object with the following information, Net applied force on object, F = 125 N

Acceleration of an object, a = 24.0 m/s²

We have to determine mass of object. Using the above force formula, F = M× a

where M --> mass in kilograms

a --> Acceleration in m/s²

F --> net force in Newton

Substitute all known values in above formula, 125 N = M × 24.0 m/s²

=> M = = \(\frac{125}{24}\)

=> M = 5.208 kg

Hence, required value is 5.208 kg.

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Complete question:

A net force of 125 N is applied to a certain object. As a result, the object accelerates with an acceleration of 24.0 m/s^2. The mass of the object is ?

a) 144 kg

b) 236 kg

c) 5.208 kg

d) 459 kg

The difference is not meaningful because the means are separated by about 1 MAD.

The Mean Absolute Deviation (MAD) of a set of data is the average distance between each data value and the mean.

It defines the variability of the data set, the larger the MAD, the greater variability in the data set and vice versa.

Thus, we can conclude that, the difference is not meaningful because the means are separated by about 1 MAD.

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The given assertion is false. The option for reason is the principal option:

"  An arrangement of three linear equations in three unknowns can have one solution, an infinite number of solutions, or no solutions."

An arrangement of linear equations is a grouping of at least one linear equation with similar variables.

A linear framework solution is the task of values to variables so that the equations are all concurrently satisfied.

For an arrangement of equations, three types of solutions exist:-

One solution: When the lines (planes) converge at a point.

No Solution: When the lines (planes) are parallel.

Infinitely numerous solutions: When the lines (planes) overlap one another.

Subsequently, the given assertion is false. The option for reason is the principal option:

" The assertion is false. An arrangement of three linear equations in three unknowns can have one solution, an infinite number of solutions, or no solutions."

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refer to the attachment for the complete question:

Answer:

4.10526315789

Step-by-step explanation:

Answer: 4.10526315789

Step-by-step explanation:

The best linear approximation to the function f(x) = e^x near x = 0 is L(x) = x + 1.

The given function is f(x) = e^x near x = 0.

To find the best linear approximation, L(x), we use the formula:

L(x) = f(a) + f'(a)(x-a),

where a is the point near which we are approximating.

Let a = 0, so that a is near the point x = 0.

f(a) = f(0) = e^0 = 1

f'(x) = d/dx (e^x) = e^x;

so f'(a) = f'(0) = e^0 = 1

Substituting these values into the formula: L(x) = 1 + 1(x-0) = x + 1

Therefore, the best linear approximation to f(x) = e^x near x = 0 is L(x) = x + 1.

For instance, linear approximation is used to approximate the change in a physical quantity due to a small change in another quantity that affects it.

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Answer:

1/4/2=1/8 1/4/3=1/12

"The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed."

Answer:

1/8 ; 1/12

Step-by-step explanation:

1/4 / 2 = 1/8

1/4 / 3 = 1/12

The present value of the payments is smaller than the amount of the loan, so you will not be able to pay off the loan.

The present value of the payments refers to the current value of the future payments, considering the time value of money. In this case, the payments are made over a period of 8 months, and each payment is listed. To determine if the payments will be enough to pay off the credit card, we need to calculate the present value of these payments and compare it to the initial loan amount of $5,000.

Since the interest rate on the credit card is 1.5% per month, we need to discount each payment back to its present value. By discounting the payments, we can see the equivalent value of these payments in today's dollars. If the present value of the payments is equal to or greater than $5,000, it would be enough to pay off the loan. However, if the present value is smaller than $5,000, it means the payments will not be sufficient to pay off the loan.

In this case, without specific information about the discount rate used to calculate the present value, we cannot make an exact determination. However, based on the given information, which states that the present value of the payments is smaller than the amount of the loan, it suggests that the payments will not be enough to pay off the credit card debt.

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To prove that there exist infinitely many primes p ≡ 3 mod 4 without using Dirichlet's theorem, we can use a proof by contradiction.  Assume that there are only finitely many primes p ≡ 3 mod 4, say p1, p2, ..., pk. Let N be the product of all these primes, i.e. N = p1p2...pk.

1. Let's denote these finitely many primes as {p_1, p_2, ..., p_k}, where each prime p_i ≡ 3 mod 4.
2. Now consider the number N = (4 * p_1 * p_2 * ... * p_k) - 1. Notice that N ≡ 3 mod 4.
3. N has a unique prime factorization, and since N ≡ 3 mod 4, at least one of its prime factors must be congruent to 3 mod 4.
4. Since we assumed there are only finitely many primes congruent to 3 mod 4, we can check if any prime in the set {p_1, p_2, ..., p_k} divides N. Notice that for every prime p_i in the set, N ≡ -1 mod p_i, which means that no prime p_i can divide N.
5. This leads to a contradiction since N must have a prime factor congruent to 3 mod 4, but none of the primes in our set can divide N. Therefore, our initial assumption is incorrect.

So, there must be infinitely many primes p ≡ 3 mod 4.

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Answer:57

Step-by-step explanation:

Answer:

B) 0.57

Step-by-step explanation:

It says "given that you are in Sacramento", so hint: only look at the Sacramento row. Ignore everything else, you don't need it.

Then it asks what is the probability of a clear day, so you look at the "Clear" column from the Sacramento row. That would be 17 days.

Lastly, you just simply divide from the total days. 17/30 = 0.57

The height of the quarter is given by the polynomial -16t^2 + 250 feet and the height of the dime is given by the polynomial -16t^2 - 10t + 100 feet.

To compare the height of the quarter and dime at any time t, we need to find the difference between their heights.

Let's first find the height of the dime when the quarter is released, which is at t=0:

Height of the quarter at t=0: 16(0)^2 + 250 = 250 feet

Height of the dime at t=0: -16(0)^2 - 10(0) + 100 = 100 feet

So, the initial height difference between the quarter and dime is 250 - 100 = 150 feet.

Now, let's find the height difference between the quarter and dime at any time t:

Height of the quarter at time t: 16t^2 + 250

Height of the dime at time t: -16t^2 - 10t + 100

So, the height difference at time t is:

(16t^2 + 250) - (-16t^2 - 10t + 100) = 32t^2 + 10t + 150

Therefore, the height difference between the quarter and dime at any time t is given by the polynomial 32t^2 + 10t + 150.

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for the first one x = 12

second one is 2

Answer:

x = 12

x = 2

Step-by-step explanation:

Basically the triangles are congruent. Therefore, the sides are equal to each other. Set both equations equal to each other and solve for x.

Answer:

650 + 22.50x = 1887.50  x = 55 hours

Step-by-step explanation:

1887.50 - 650 = 1237.5

1237.5 / 22.50 = 55

She needs to work 55 hours to obtain $1887.50 if she already has $650.

Answer:

9

Step-by-step explanation:

easy

Answer:

125, 20

Step-by-step explanation:

Answer:

1.95

Step-by-step explanation:

X= 10

2×10squared(10-5)/ 10×10

2×100-5/10×10

200-5/10×10

195/10×10

195/100

1.95

The lengths of the diagonals are approximately 10.6 cm and 31.8 cm.

To solve this problem, we can use the formula for the area of a rhombus, which is A = (d₁ x d₂)/2, where A is the area, and d₁ and d₂ are the lengths of the diagonals.

We are given that the area of the rhombus is 168 square centimeters, so we can substitute this value into the formula:

=> 168 = (d₁ x d₂)/2.

We are also given that one diagonal is three times as long as the other, so we can express the length of one diagonal in terms of the other: d₁ = 3d₂.

Substituting this expression for d₁ into the formula for the area, we get:

168 = (3d₂xd₂)/2 336 = 3d₂²2 d₂² = 112 d₂ = √(112) = 10.6 (to the nearest tenth of a centimeter)

Using the expression for d₁ in terms of d₂, we can find the length of the other diagonal:

d₁ = 3d₂ = 3(10.6) = 31.8 (to the nearest tenth of a centimeter)

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Answer:

x²+2

Choice D

Step-by-step explanation:

(2x²+2x+3)(x²+2x+1)

Subtract these, which means

Bringing like terms,

Choice D

Answer:

= 19 R 0

= 19

Step-by-step explanation:

0.1717 is Probability that none has ever been married from selected 5 young women in age category at random.

In the question we have,

the number of females age 20 to 24 has never been married = 70.3%

the number of young women in this age category (20 to 24) at random = 5

We shall find out the probability that none has been maaried from selected group of 5 females.

Probability of female age 20 to 24 has never been married = 0.703

So, the probability that none has been married from selected group of 5 females ( p)= 0.703×0.703×0.703×0.73×0.73

= 0.1717

Therefore, The probability that none has ever been married is 0.1717.

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Answer:

0.22

Step-by-step explanation:

Answer:

0.22

Step-by-step explanation:

brainliest plsss

Given that, the cartesian equation is x² = 2y.Let's substitute x = rcosθ and y = rsinθ to change this equation from Cartesian coordinates to polar coordinates.

r²cos²θ = 2rsinθr = 2tanθTherefore, the polar equation for the curve represented by the given Cartesian equation is r = 2tanθ.

The given cartesian equation is x² = 2y. Now, to change this cartesian equation to polar equation, we should substitute x = rcosθ and y = rsinθ in the cartesian equation. So, after the substitution we get, (rcosθ)² = 2rsinθ Simplifying this equation we get, r²cos²θ = 2rsinθ Dividing both sides by cos²θ we get, r² = 2rsinθ/cos²θ Simplifying we get, r = 2tanθTherefore, the polar equation for the curve represented by the given Cartesian equation is r = 2tanθ.So, the main answer is option (C) r=2tanθ. Therefore, the answer is (C) r=2tanθ.

Therefore, the polar equation for the curve represented by the given Cartesian equation is r=2tanθ.

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Answer: the 10th term is 4.1

Step-by-step explanation:

The sum is +0.4 each time.

1=0.5

2=0.9

3=1.3

4=1.7

5=2.1

6=2.5

7=2.9

8=3.3

9=3.7

10=4.1

Answer:

The answer is 23

Step-by-step explanation:

0.5, 0.9, 1.3, 1.7, 2.1, 2.5, 2.9, 3.3, 3.7, 4.1

You get the remaining terms by adding 0.4 to the previous number.  Once all of the terms are found, add them up and you get an answer of 23.

The correct option regarding the discounts is given as follows:

Store Z has the best sale price of $28.

The discount can be a percentage or an amount off, and the calculations are explained as follows:

Considering the discount plans and the original price of $35, the discounted prices in this problem are as follows:

Hence the correct statement is given as follows:

Store Z has the best sale price of $28.

The complete problem is:

Leo wants to buy some shoes. He found the shoes at three different stores for a price of $35. The stores are each having a sale:

Which statement about the sale price of these shoes is true?

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