Molly bought 2 pounds of jelly beans for
$2.99. How much would 7 pounds of jelly
beans cost?
(Round your answer to the tenths place.)

Step-by-step explanation:

4x^2-6x-40

2(2x^2-3x-20)

=2(2x+5)(x-4)

Answer:

55%

Step-by-step explanation:

To get 55 I just divided 33/60 and multiplied it buy 100

Answer:

cos 30°=b/h

√3/2=6√3/y

y=6√3/√3/2

y=12

Answer:

I believe its (- 2, 2 )

Step-by-step explanation:

Assuming the dilatation is centred at the origin, then multiply the coordinates of B by the scale factor 2, that is

B(- 1, 1 ) → B'(2(- 1), 2(1) ) → B'(- 2, 2 )

Answer: 0.28

Step-by-step explanation:

Answer:

f(x)=104x-x^2

Step-by-step explanation:

Let

x = number of tickets sold.

example, 2 tickets cost 2 · 408 = $816

3 tickets cost 3 · 404 = $738.

The cost of buying x tickets= the number of tickets sold × the price of each ticket.

If x tickets are sold, then the price of each ticket is 412-4(x-1)

Then the quadratic function that gives the total cost of buying x tickets is given by

Cost =quantity sold*price

=412-4(x-1)*x

=(412-4x+4)*x

=412x-4x^2+4x

=416x-4x^2

Divide through by 4

=104x-x^2

Therefore, the required quadratic function is

f(x)=104x-x^2

The equation of the plane passing through (0, -1, 4) that is orthogonal to the planes 5x + 4y - 4z = 0 and -x + 2y + 5z = 7 can be found using the cross product of the normal vectors of the given planes.

Step 1: Find the normal vectors of the given planes.
For the first plane, 5x + 4y - 4z = 0, the coefficients of x, y, and z form the normal vector (5, 4, -4).
For the second plane, -x + 2y + 5z = 7, the coefficients of x, y, and z form the normal vector (-1, 2, 5).

Step 2: Take the cross-product of the normal vectors.
To find the cross product, multiply the corresponding components and subtract the products of the other components. This will give us the direction vector of the plane we're looking for.
Cross product: (5, 4, -4) × (-1, 2, 5) = (6, -29, -14)

Step 3: Use the direction vector and the given point to find the equation of the plane.
The equation of a plane can be written as Ax + By + Cz + D = 0, where (A, B, C) is the direction vector and (x, y, z) is any point on the plane.
Using the point (0, -1, 4) and the direction vector (6, -29, -14), we can substitute these values into the equation to find D.
6(0) - 29(-1) - 14(4) + D = 0
29 - 56 - 56 + D = 0
D = 83

Therefore, the equation of the plane passing through (0, -1, 4) and orthogonal to the planes 5x + 4y - 4z = 0 and -x + 2y + 5z = 7 is:
6x - 29y - 14z + 83 = 0.

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Answer:

the square means those to lines make a 90 degree angle aka. right angle

Step-by-step explanation:

Answer:

Sine of x = \(\frac{\sqrt{288} }{18}\)

Cos of x = 6 / 18

Step-by-step explanation:

To solve this:

We can use the Pythagorean theorem and properties of sines, cosines, and tangents to solve the triangle:

\(a^{2} + b^{2} = c^{2}\)

In any right angled triangle, for any angle:

The sine of the angle = the length of the opposite side / the length of the hypotenuse

The cosine of the angle = the length of the adjacent side / the length of the hypotenuse

In this right triangle, we know the opposite side is \(\sqrt{288}\), the adjacent side is 6, and the hypotenuse is 18

So to find the sine of x, we would do \(\frac{\sqrt{288} }{18}\)

And to find the cos of x, we would do 6 / 18

Hope this helps!! Pls mark as brainliest, ty.

Yes, if the mean weight of two groups of children is different with a p-value of 0.03, the difference is statistically significant. Typically, a p-value of less than 0.05 is considered statistically significant, indicating that the observed difference is unlikely to be due to chance alone.

Yes, if the p level is .03, then the difference in mean weight between the two groups of children is statistically significant. The p level that identifies statistical significance is generally considered to be .05 or less, meaning that there is a 5% or less chance that the difference observed is due to random chance rather than a true difference between the two groups. Therefore, a p level of .03 is below the commonly accepted threshold for statistical significance and suggests that the difference in mean weight is not likely due to chance alone.

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x:y=0.75:0.90

Here,

Dividing by the value of y=0.90,

x:y=0.75/0.90:0.90/0.90

=5/6:1

Similarly,

y:z=1/3:1/4

Dividing by 1/3,we get,

y:z=1:3/4

Now,

X:y:z=5/6:1:3/4

Multiplying by both value of y,0.90×1/3=3/10

x:y:z=5/6×3/10:1×3/10:3/4×3/10

By solving this,

x:y:z=1/4:3/10:9/40Answer:

Step-by-step explanation:

Answer:

32.33 <= m

Step-by-step explanation:

Since we are dealing with below sea level our initial starting point and max level will both be negative values, while our descending rate will also be negative because we are going down. Using the values provided we can create the following inequality...

-400 <= -12m - 12

Now we can solve the inequality to find the max number of minutes that the submarine can descend.

-400 <= -12m - 12   ... add 12 on both sides

-388 <= -12m   ... divide both sides by -12

32.33 <= m

Answer:

-22 + -12 >(or equal to) -400.at most 31.5 minutes

Step-by-step explanation:

got it right on cpl

Answer:

32 Fahrenheit

Step-by-step explanation:

Since it is -8, subtract -8.

Now, you have 0 Fahrenheit.

Then, you add 24, since the high was -24 Fahrenheit.

The total number you added and subtracted is 32 Fahrenheit.

Hope this helps!

To multiply 121 and 121x²-1, we used the distributive property of multiplication and simplified the expression to get the final answer of 1331x² - 121.

To multiply 121 and 121x²-1, we need to use the distributive property of multiplication. We can break up 121 as 11 * 11 and write as

121 * (121x²-1) = (11 * 11) * (121x²-1)

Using the distributive property here, we can then write

= 11 * 11 * 121x² - 11 * 11 * 1

Simplifying the expression, we get

= 1331x² - 121

So the multiplication of 121 and 121x²-1 is 1331x² - 121.

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--The given question is incomplete, the complete question is given

" Multiply 121 * 121x²-1 "--

The probability that a package of 5 tasks is processed in less than 8 minutes is 0.963.

Let X denote the time required to process a package of five tasks. X is an exponentially distributed random variable with mean 2 minutes.

The probability of X being less than 8 minutes is given by:

P(X ≤ 8) = 1 - P(X > 8)

= \(1 - (1 - e^{(-8/2)}^{5}\)

= 0.963

Therefore, the probability that a package of 5 tasks is processed in less than 8 minutes is 0.963.

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The statement "It is rigid because all side lengths and angles are congruent" is true.

In mathematics, a transformation is considered rigid if it preserves distances and angles. For example, a translation, rotation, or reflection is a rigid transformation because it preserves distances and angles. If a transformation preserves side lengths and angles, then it is considered rigid, regardless of whether the side lengths and angles are congruent or not.

Answer: A. it is rigid because all side lengths and angles are congruent.

Step-by-step explanation: RIGHT ON EDGE 2023

Answer:

\(\frac{6363}{100}\)

Step-by-step explanation:

Answer:

700/11

I would say that's the answer

or 63 7/11

Step-by-step explanation:

the distributive property is 6(1+5), the greatest common factor is 6

Answer:

6(1+5)

Step-by-step explanation:

khan told me

Answer:

A. 1/12+5/12+5/12

Step-by-step explanation:

From the given options; let us calculate the fractions and see which one tallies with 11/12

a) \(\dfrac{1}{12}+ \dfrac{5}{12} + \dfrac{5}{12}\)

The lowest common multiple (L.C.M) here is 12 because 12 goes in all the denominators.

So;

\(= \dfrac{1+5+5}{12}\)

\(= \dfrac{11}{12}\)

b)

\(\dfrac{5}{4}+\dfrac{3}{4}+\dfrac{3}{4}\)

Here, the  lowest number that can be divisible by the denominators is 4

\(=\dfrac{5+3+3}{4}\)

\(=\dfrac{11}{4}\)

c)

\(\dfrac{5}{6}+\dfrac{6}{6}\)

\(=\dfrac{5+6}{6}\)

\(=\dfrac{11}{6}\)

d)

\(\dfrac{10}{12}+\dfrac{2}{12}\)

\(=\dfrac{10+2}{12}\)

\(= \dfrac{12}{12}\)

= 1

Thus, from the given options, the expression that has the sum of 11/12 is option A.

The value of mean is 5.5 and the value of standard deviation is 1.44.

Now, we need to find the mean and standard deviation of this random variable. The mean of a uniformly distributed random variable can be found by taking the average of the lower and upper bounds of the distribution. In this case, the lower bound is 3 and the upper bound is 8, so the mean would be:

Mean = (3+8)/2 = 5.5

So, the expected number of tickets purchased by an individual is 5.5.

Next, we need to find the standard deviation. The standard deviation is a measure of the deviation or spread of the data from the mean. For a uniform distribution, the formula for standard deviation is:

Standard Deviation = (Upper Bound - Lower Bound) / √12

Plugging in the values, we get:

Standard Deviation = (8-3) / √(12) = 1.44

This means that on average, the number of tickets purchased by an individual is expected to deviate from the mean by about 1.44 tickets.

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Answer:

Huw spends £48 on his social life

The measures of the angles are ∠1 = 127°, ∠2 = 53°, ∠3 = 127°, ∠4 = 37°, ∠5 = 53°, ∠6 = 90°, ∠7 = 37°, ∠8 = 143°, ∠9 = 37° and ∠10 = 143°

From the question, we have the following parameters that can be used in our computation:

The transversal lines and the other lines

So, we have

∠1 = 180 - 53

Evaluate

∠1 = 127°

Also, we have

∠5 = 53°

By vertical angles, we have

∠2 = 53°

∠3 = 127°

Next, we have

∠4 = 127 - 90°

∠4 = 37°

Solving further, we have

∠6 = 90°

By corresponding angles, we have

∠7 = 37°

∠9 = 180 - 90 - 53°

∠9 = 37°

∠10 = 90 + 53°

∠10 = 143°

∠8 = 143°

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Answer:

C, 6 by 15 ft.

Step-by-step explanation:

10*3/2=15, and 4*3/2=6, so we get 6 by 15ft

Pls brainliest for leveling up

Answer:

Emma can buy 21 bookmarks

Step-by-step explanation:

Add 14.50 + 0.50 + 0.50 + 0.50 + 0.50 + 0.50 you get it. Until she hits 25.00 dollars.

Answer:

x=e³-5

Step-by-step explanation:

Solve the equation by rewriting in exponential form using the definition of a logarithm and simplifying.

Answer: the value of a = 14.72 and if you evaluate it.

Have a good day

Answer:

the numbers are 85 and -31.

Step-by-step explanation:

first, let the numbers be x and y.

so by question we have,

x+y=54.......(I)

x-y=116......(I I)

now, solve it through elimination method,

x+y=54

x-y=116

here, y and y cancelled out and we get,

or, x+x=54+116

or, 2x=170

or, x=170/2

therefore, x=85

now put value of x in any equation. let's put in eqn (I), we get,

or, x+y=54

or,85+y=54

or, y=54-85

so, y= -31

therefore, the numbers are 85 and - 31.

The probability that between 31.2% and 50.4% of the students in the sample will be minority students is approximately 0.7154, or 71.54%.

To solve this problem, we can use the normal approximation to the binomial distribution, assuming that the sample size is large enough. The mean (μ) of the binomial distribution is given by n * p, where n is the sample size and p is the probability of success. In this case, the sample size is 100 and the probability of success is 0.36.

μ = n * p = 100 * 0.36 = 36

The standard deviation (σ) of the binomial distribution is given by the square root of n * p * (1 - p).

σ = √(n * p * (1 - p)) = √(100 * 0.36 * (1 - 0.36)) ≈ 4.16

To calculate the probability between 31.2% and 50.4%, we need to convert these percentages into z-scores using the formula:

z = (x - μ) / σ

where x is the observed value, μ is the mean, and σ is the standard deviation.

For 31.2%:

z1 = (31.2 - 36) / 4.16 ≈ -1.06

For 50.4%:

z2 = (50.4 - 36) / 4.16 ≈ 3.37

Next, we need to find the cumulative probabilities associated with these z-scores using a standard normal distribution table or calculator. The cumulative probability can be interpreted as the area under the normal curve up to a given z-score.

P(31.2% ≤ x ≤ 50.4%) = P(-1.06 ≤ z ≤ 3.37)

Using a standard normal distribution table or calculator, we can find the corresponding cumulative probabilities:

P(-1.06 ≤ z ≤ 3.37) ≈ 0.8577 - 0.1423 ≈ 0.7154

Therefore, the probability that between 31.2% and 50.4% of the students in the sample will be minority students is approximately 0.7154, or 71.54%.

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Answer: K = 8

Step-by-step explanation:

For these kinds of problems you have to isolate the variable, the one we're trying to isolate is k.

First step is adding 4 to both sides to get rid of the -4 on the left.

Once you do that youll have 4k = 36.

Now divide both sides by 4 to get the k by itself, this'll give you k = 8.

You can plug it in to see if it's right.

4(8) - 4 = 32

36 - 4 = 32

32 = 32

So its correct