can u help me check if this is correct ty

Answer:

No solution

Step-by-step explanation:

To isolate the variable, begin by adding 9x to each side

-6 - 9x = -9x - 4

-6 - 9x (+ 9x) = -9x (+ 9x) - 4

-6 ≠ -4

The equation in your answer has no solution. If you are supposed to find the value of x, you might want to double check for typos.

Answer:

-2a^4+8a^3-6a^2

Step-by-step explanation:

2a^2(a-1)(3-a)

2a^2(-a^2 +3a-3+a)

2a^2(-a^2+4a-3)

-2a^4+8a^3-6a^2

Answer: He bought 20 ice cream bars and 14 popsicle

Step-by-step explanation:

To solve this I used the elimination method, you could use substitution as well

Here are our two equations

x+y=34 Because the total number of ice creams bought must be given to 34 children and no more

2x+5y=128 because that is the cost for each ice cream and the amount he spent

For the elimination method we have to cancel out one of the variables, I decided to cancel out the x, so I multiplied the top equation by -2. So i got -2x-2y=-68

2x+5y=128 Then we get

3y=60 so

y=20

Now we can go back to the first equation and plug in y.

x+20=34

  -20  -20

x=14

So he bought 14 popsicles and 20 ice cream bars.

what is the question

Answer:

-60

Step-by-step explanation:

-46-14=-60

Answer:

-46-14=-60

Step-by-step explanation:

Answer:

There is a 38% chance at least 1 was blue

Step-by-step explanation:

there are 8 marbles total 3 being blue. 3/8= .375 = 38%

The probability of getting at least 1 blue marble in the given situation is 0.375, i.e., 37.5%.

Probability is the ratio of favorable outcomes to the total number of outcomes.

It is given that there are 3 blue and 5 red marbles in the bag.

Therefore, the total number of marbles in the bag is 8.

Let's take two scenarios, one when one blue marble and one red marble are drawn and the second one when both marbles drawn are blue.

Let B and R be the events of drawing a blue marble and red marble, respectively.

Case 1:

The probability of getting one blue and one red marble is calculated as follows:

\(P(B =1, R=1) = \dfrac{3}{8}\times\dfrac{5}{7}\)

                          \(= \dfrac{15}{56}\)

Note that the replacement is prohibited.

Case 2:

The probability of getting two blue marbles is calculated as follows:

\(P(B =2) = \dfrac{3}{8}\times\dfrac{2}{7}\)

               \(= \dfrac{6}{56}\)

The probability of getting at least 1 blue marble is given as follows:

\(P(B\ge1) = P(B =1, R=1) + P(B =2)\)

               \(= \dfrac{15}{56}+ \dfrac{6}{56}\\= \dfrac{21}{56}\\=\dfrac{3}{8}\\= 0.375\)

Therefore, the probability of getting at least a blue marble is 0.375.

Learn more about Probability here:

https://brainly.com/question/32117953

#SPJ3

Answer:

1) selling price is $62.50 and 2) total cost would be $66.25

Step-by-step explanation:

Statistical hypothesis testing employs the null and alternate hypotheses.

The alternative hypothesis of a test expresses the prediction of an effect or relationship based on your study, while the null hypothesis of the test does not yet predict an effect or an association between the variables.

A statement that there is no relationship between two variables is called a null hypothesis. Another hypothesis is that the two variables are statistically correlated.

Alternative unilateral (directional) or the bilateral (non-directional) hypotheses are also possible. Simple, complex, true, and false are the four main categories of null hypotheses. If the p-value is greater than the statistical significance level, null hypothesis is preferred.

To Know more about alternative hypothesis:

brainly.com/question/25263462

#SPJ4

Answer:

520 per 16 seconds.

Step-by-step explanation:

Answer:

x = 105

Step-by-step explanation:

Do take note for this question, the main goal is to remove the cube root, to do that, we have cube the cube root.

\(\frac{\sqrt[3]{2x+6} }{3} - 8 = -6\\ \frac{\sqrt[3]{2x+6} }{3} = 2\\ \sqrt[3]{2x+6} =6\\(\sqrt[3]{2x+6} )^3=6^3\\ 2x+6 = 216\\ 2x=210\\ x=\frac{210}{2} \\ x=105\)

The quadratic has one root with multiplicity 2 if the discriminant is 0, which is

\((2m+4)^2-4(4-m)(8m+1)\)

(That is, for a quadratic \(ax^2+bx+c\), the discriminant is \(b^2-4ac\).)

Set the discriminant equal to 0 and solve for \(m\):

\((2m+4)^2-4(4-m)(8m+1)=0\)

\(4m^2+16m+16+32m^2-124m-16=0\)

\(36m^2-108=0\)

\(36m(m-3)=0\)

\(\implies m=0\text{ or }m=3\)

Answer:

see explanation

Step-by-step explanation:

Given

cotθ = \(\frac{4}{5}\) = \(\frac{adjacent}{opposite}\)

Use Pythagoras' identity to calculate the hypotenuse h

h² = 4² + 5² = 16 + 25 = 41 ( take square root of both sides )

h = \(\sqrt{41}\)

θ is in quadrant III where sinθ < 0 and secθ < 0

sinθ = \(\frac{opposite}{hypotenuse}\) = - \(\frac{5}{\sqrt{41} }\) = -  \(\frac{5\sqrt{41} }{41}\)

cosθ = \(\frac{adjacent}{hypotenuse}\) = - \(\frac{4}{\sqrt{41} }\)

secθ = \(\frac{1}{cos0}\) = - \(\frac{\sqrt{41} }{4}\)

The behavior of the graph of f(x) as x approaches infinity can be best predicted by the last row of the table.

As x approaches positive infinity, f(x) approaches positive infinity. This can be seen from the values in the last row whereas x increases, the corresponding values of f(x) increase without bound. Therefore, the graph of f(x) will have an asymptote at y = infinity as x approaches infinity. Similarly, as x approaches negative infinity, f(x) approaches negative infinity, as seen from the first row of the table.

Therefore, the graph of f(x) will have an asymptote at y = negative infinity as x approaches negative infinity.

For more questions like Negative infinity click the link below:

https://brainly.com/question/24224719

#SPJ11

The perimeter of the rectangle garden is approximately 50.92 meters.

Let the length of the rectangle garden be L, and let its breadth be B.

From the given information, we know that the area of the garden is 162 square meters, so we can write:

L * B = 162

We also know that the breadth of the garden is equal to its length, so we can substitute L for B:

L * L = 162

Simplifying this equation, we get:

L^2 = 162

Taking the square root of both sides, we get:

L = 12.73 (approx.)

Now that we know the length of the garden, we can use it to find the breadth:

B = L = 12.73

The perimeter of the garden is given by:

P = 2L + 2B

Substituting the values we found for L and B, we get:

P = 2(12.73) + 2(12.73)

P = 50.92 (approx.)

Therefore, the perimeter of the rectangle garden is approximately 50.92 meters.

To know more about Perimeter visit:

brainly.com/question/6465134

#SPJ1

The control limits for 3-sigma x chart are

Upper Control Limit - 3.807 inches

Lower Control Limit - 2.291 inches

The control limits for the 3-sigma R-chart are Upper Control Limit- 2.373 inches

X-double bar = Sum of observations (x-bar) / Total number of observations

X-double bar = 73.17 / 24

X-double bar = 3.049

R-bar = Sum of observations (R) / Total number of observations

R-bar = 24.97 / 24

R-bar = 1.040

(a) The Upper Control Limit (UCLx) and Lower Control limit (LCLx) for the 3-sigma x-bar chart is calculated as,

UCLx = X-double bar + (A2 x R-bar)

LCLx = X-double bar - (A2 x R-bar)

From the table of factors for computing the control chart limits (3-sigma),

For n = 4 (4-pieces of precision cut wire)

A2 = 0.729

Putting these values in the above formulas, we get,

UCLx = 3.049 + (0.729 x 1.040)

UCLx = 3.807 inches

LCLx = 3.049 - (0.729 x 1.040)

LCLx = 2.291 inches

Based on the x-bar chart, the wire cutting process has been out of control, because the observation at 19th hour (4.51) lie outside the computed upper control limit and lower control limit.

(b) The Upper Control Limit (UCLr) and Lower Control limit (LCLr) for the 3-sigma  R-chart is calculated as,

UCLr = D4 x R-bar

LCLr = D3 x R-bar

From the table of factors for computing the control chart limits (3-sigma),

For n = 4 (4-pieces of precision cut wire)

D3 = 0, D4 = 2.282

Putting these values in the above formulas, we get,

UCLr = 2.282 x 1.040

UCLr = 2.373 inches

LCLr = D3 x R-bar

LCLr = 0 x 1.040

LCLr = 0 inches

Learn more about Upper Control Limit here:

https://brainly.com/question/33994064

#SPJ4

Answer:

Don't know u is correct. Also I'm not a h0* how rude  >:(

Answer:

None of the above because I love you

Step-by-step explanation:

I don't hate you and if some people do they must have there reasons which I don't know, but some people just hate for no reason and if they can hate for no reason some people can love for no reason.

You may be a complete stranger to me but I love you

Answer:

(A) 13/3 / -5/6

Step-by-step explanation:

the answer is 13 over 3 divided by negative 5 over 6

i know this because i just took the quiz. ; )

i hope this helps <3

Answer:

its A

Step-by-step explanation:

I took the quiz

Answer:

what is it round what to the nearest ten what

Step-by-step explanation:

Answer:

8x + 2y = 10  ==>  y = -4x + 5

12x - 3y = -25​  ==>  y = 4x + 25/3

Step-by-step explanation:

8x + 2y = 10  ==> solve for y

2y = 10 - 8x  ==> subtract 8x on both sides

(2y = 10 - 8x) / 2 ==> divide the equation by 2 to make 2y into y

y = 5 - 4x  ==> simplify

y = -4x + 5  ==> put the equation in y=mx+b form

12x - 3y = -25​  ==> solve for y

12x = -25 + 3y  ==> make y positive by adding 3y on both sides

12x + 25 = 3y ==> add 25 on both sides to isolate y

(3y = 12x + 25) / 3  ==> divide the equation by 3 to make 3y into y

y = 4x + 25/3 ==> simplify

Answer:

Diagonal AC is NOT perpendicular to diagonal BD

Step-by-step explanation:

The answer is (b) I = 13/12.

We can use the degree 2 Taylor polynomial of f(x) centered at 0, which is given by:

f(x) ≈ f(0) + f'(0)x + (1/2)f''(0)x^2

where f(0) = e^0 = 1, f'(x) = (-1/2)xe^(-x^2/4), and f''(x) = (1/4)(x^2-2)e^(-x^2/4).

Integrating the approximation from 0 to 1, we get:

∫₀¹ f(x) dx ≈ ∫₀¹ [f(0) + f'(0)x + (1/2)f''(0)x²] dx

= [x + (-1/2)e^(-x²/4)]₀¹ + (1/2)∫₀¹ (x²-2)e^(-x²/4) dx

Evaluating the limits of the first term, we get:

[x + (-1/2)e^(-x²/4)]₀¹ = 1 + (-1/2)e^(-1/4) - 0 - (-1/2)e^0

= 1 + (1/2)(1 - e^(-1/4))

Evaluating the integral in the second term is a bit tricky, but we can make a substitution u = x²/2 to simplify it:

∫₀¹ (x²-2)e^(-x²/4) dx = 2∫₀^(1/√2) (2u-2) e^(-u) du

= -4[e^(-u)(u+1)]₀^(1/√2)

= 4(1/√e - (1/√2 + 1))

Substituting these results into the approximation formula, we get:

∫₀¹ f(x) dx ≈ 1 + (1/2)(1 - e^(-1/4)) + 2(1/√e - 1/√2 - 1)

≈ 1.0838

Therefore, the closest answer choice is (b) I = 13/12.

To know more about taylor polynomial refer here:

https://brainly.com/question/31419648?#

SPJ11

In the context of statistics, a statistic refers to a numerical value that is calculated from a sample of data, while a parameter refers to a numerical value that describes a population.

In the given scenario, the number of birds in different regions can be considered as either a statistic or a parameter depending on the context in which it is used.

If the number of birds is obtained by counting the birds in a specific region and then calculating summary measures such as the mean, median, or standard deviation based on that sample, then it would be considered a statistic. This is because the data is collected from a subset (sample) of the entire population of birds.

On the other hand, if the number of birds represents the total count or an average count across all regions without any sampling involved, then it would be considered a parameter. In this case, the value represents a characteristic of the entire population of birds in different regions.

It is important to note that whether the number of birds is considered a statistic or a parameter depends on how the data is collected and analyzed.

If multiple samples are taken from different regions and statistical inference techniques are used to make inferences about the entire population, then it would be appropriate to consider it as a statistic. However, if the data represents a complete count or an average across all regions without any sampling involved, then it would be considered a parameter.

To know more about statistic refer here:

https://brainly.com/question/31577270#

#SPJ11

1085 different combination of 3 movie she can rent.

What is linear equations?

Linear equations is a type of equation that is in between two variables that gives a straight line.

The calculation of  number of different combinations of 3 films she can rent if she needs at least two documentaries is shown below:-

=N×(2× documentry and 1 horror movies)+N×(3 documentry)

=(6C1)×(15C2)+(6Co)×(15C3)

= 630 + 455

= 1,085

Therefore for calculating the number of different combinations of 3 films she can rent if she needs at least two documentaries we simply applied the above formula and here we consider one number in the question as it shows the double number.

To know more about linear equations click-

https://brainly.com/question/2030026

#SPJ1

Answer:

2/3

Step-by-step explanation:

-2x+3=-1+x+2

-2x-x+3=-1+2

-3x+3=1

-3x=1-3

-3x=-2

3x=2

x=2/3

The equation of line in slope intercept form is, \(y=\frac{3}{4}x+9\).

What is slope point form of the line?

A line's point slope form equation is y - y1 = m. (x – x1). Consequently,

y - 0 = m(x = 0), or y = mx, is the equation of a line passing through the origin with a slope of m.

Let the line passes through the point (-4, 6) and having slope 3/4.

We know that the equation of line passes through the point \((x_1, y_1)\) and having slope m is,

\(y-y_1=m(x-x_1)\)

Here, \((x_1, y_1) = (-4, 6)\)  and slope \(m = \frac{3}{4}\)

Plug the values in the above equation.

⇒

\(y-6=\frac{3}{4}(x-(-4))\\ y - 6 = \frac{3}{4}(x + 4)\\ y-6=\frac{3}{4} x + 3\\y = \frac{3}{4}x+3+6\\ y=\frac{3}{4}x+9\)

Hence, the equation of line in slope intercept form is, \(y=\frac{3}{4}x+9\).

To know more about slope - point form of the line, click on the link

https://brainly.com/question/24907633

#SPJ1

Answer: a=25

Step-by-step explanation:

To find a, you want to isolate a.

a-9=16              [add both sides by 9]

a=25

Now, we know that a=25.

For the given binomial expression the coefficients of (a+b)³ are 1, 3, 3, 1

The constant coefficient is the coefficient that is not connected to any variables in an expression. For example, the constant coefficients in the formulas above are 3 and c, respectively. The leading coefficient is the coefficient associated to the variable with the highest degree in a polynomial. For example, in the formulas above, the leading coefficients are 2 and a, respectively.

We have,

The binomial expansion (a + b)³,

We know that,

The formula for binomial expansion,

(u + v)ⁿ = ⁿC₀uⁿv⁰ + ⁿC₁uⁿ⁻¹v¹ + ⁿC₂uⁿ⁻²v² + ⁿC₃uⁿ⁻³v³

Now,

u = a,

v = b,

And, n =3

Now,

By putting values,

(a + b)³ = ³C₀a³b⁰ + ³C₁a³⁻¹b¹ + ³C₂a³⁻²b² + ³C₃a³⁻³b³

(a + b)³ = ³C₀a³b⁰ + ³C₁a²b¹ + ³C₂a¹b² + ³C₃a⁰b³

Now,

By using combination formula,

On solving we get,

(a + b)³ = a³+3a²b+3ab²+b³

So,

Now,

The coefficients of :

a³ = 1,

3a²b = 3,

3ab² = 3,

b³ = 1,

So,

For the given binomial expression the coefficients of (a+b)³ are 1, 3, 3, 1

To know more about coefficient, visit:

https://brainly.com/question/27481600

#SPJ4

Answer: the answer is d

Step-by-step explanation:

I took the tes