Help please. I’ll give brainliest.

Answer:

Go back to -1

Step-by-step explanation:

4 - -5 = -1

Answer:B

Step-by-step explanation:

X+2 divide 3x^4-x+2=

3x^3-6x^2+12x-25=

52=

52/x+2

the answer is d. its simple,the reason of that is because you would set up the synthetic division using the coefficients of the numerator and the root of the denominator. divide using the rules for synthetic division.

3x 4 cubed- 6x3 cubed +12x 2 cubed-24x-z+48+  2(z-47)  over x+2

Answer: \(- \frac{62}{5}\)

Convert the decimal number into a fraction

Multiply by 10

\((- \frac{12.40}{1} ) (\frac{10}{10})\)

\(- \frac{124}{10}\)

Divide the fraction by 2

\(- \frac{62}{5}\)

The target heart rate is strictly increasing then strictly decreasing between 40 and 60 minutes (Option B)

There are three observed intervals shown on the graph and during those three there are times when his heart rate increases, then becomes stable and then decreases.

However, between the intervals of 40 to 60 minutes, there was no point where it was stable or level. It increased rapidly at the 40th minute and at the 50th minute it began to drop rapidly till the 60th minute.

**(Note that when he approached the 70th minute he was already stable and there was no increase or decrease)**

The limits are as follows:

a. lim [f(x)g(x)] = -8

b. lim [f(x)/g(x)] = -8

c. lim [g(x)/f(x)] = -1/8

d. lim [f(x)g(x)] = -8

To find the limits of the given expressions, we can use the limit laws and properties. Given that lim f(x) = 8 and lim g(x) = -1, we will compute the limits for the expressions provided.

a. lim [f(x)g(x)]

Using the limit product rule, the limit of a product of two functions is equal to the product of their individual limits:

lim [f(x)g(x)] = lim f(x) * lim g(x) = 8 * (-1) = -8

b. lim [f(x)/g(x)]

Using the limit quotient rule, the limit of the quotient of two functions is equal to the quotient of their individual limits:

lim [f(x)/g(x)] = lim f(x) / lim g(x) = 8 / (-1) = -8

c. lim [g(x)/f(x)]

Similarly, using the limit quotient rule:

lim [g(x)/f(x)] = lim g(x) / lim f(x) = (-1) / 8 = -1/8

d. lim [f(x)g(x)]

To find this limit, we multiply the limits of f(x) and g(x):

lim [f(x)g(x)] = lim f(x) * lim g(x) = 8 * (-1) = -8

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keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above

\(x-3y=9\implies -3y=-x+9\implies y=\cfrac{-x+9}{-3} \\\\\\ y=\cfrac{-x}{-3}+\cfrac{9}{-3}\implies y=\cfrac{1}{3}x-3\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}\)

so we're really looking for the equation of a likne whose slope is 1/3 and it passes through (-10 , 9)

\((\stackrel{x_1}{-10}~,~\stackrel{y_1}{9})\hspace{10em} \stackrel{slope}{m} ~=~ \cfrac{1}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{9}=\stackrel{m}{ \cfrac{1}{3}}(x-\stackrel{x_1}{(-10)}) \implies y -9= \cfrac{1}{3} (x +10) \\\\\\ y-9=\cfrac{1}{3}x+\cfrac{10}{3}\implies y=\cfrac{1}{3}x+\cfrac{10}{3}+9\implies {\Large \begin{array}{llll} y=\cfrac{1}{3}x+\cfrac{37}{3} \end{array}}\)

The speed of the river is 7.5 kilometers per hour.

Let the speed of boat in still water = u = 14 km/h

Let the speed of river = v = x km/h

Upstream speed = u - v = 14 - x

Downstream speed = u + v = 14 +x

Distance paddled upstream = \(D_{1}\) = 5 km

Distance paddled downstream = \(D_{2}\) = 10 km

Time taken (upstream) = \(T_{1}\) = \(\frac{D_{1} }{u-v}\)

Time taken (downstream) = \(T_{2}\) = \(\frac{D_{2} }{u+v}\)

According to question,

        \(T_{1}\) = \(T_{2}\)

      \(\frac{D_{1} }{u-v}\) = \(\frac{D_{2} }{u+v}\)

     \(\frac{5}{14-x}\) = \(\frac{10}{14+x}\)

5(14 + x) = 10(14 - x)

   14 + x = 2(14 - x)

   14 + x = 28 - 2x

  x + 2x = 28 - 14

        3x = 14

          x = \(\frac{14}{3}\)

          x = 7.5

Hence, Speed of river is 7.5 km/h.

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Answer:

1/2x+5

Step-by-step explanation:

y = 2x-10

Exchange x and y

x = 2y -10

Solve for y

x + 10 = 2y-10+10

x+10 = 2y

Divide by 2

x/2 + 10/2 = 2y/2

1/2x +5 = y

The inverse is 1/2x+5

Answer:

h(x) = 2x + 5

Step-by-step explanation:

To find the inverse, interchage the variables and solve for y

Answer:

no solutions

Step-by-step explanation:

same slope different y intercepts

Using the given data on the number of live multiple-delivery births for women aged 15 to 54, we need to calculate probabilities related to the age groups of the mothers. The probability of a randomly selected multiple birth involving a mother aged 30 to 39 will be determined, as well as the probabilities of not being in the age range, being less than 45, and being at least 40. Finally, we need to interpret whether a multiple birth involving a mother aged at least 40 is unusual.

(a) To calculate the probability of a randomly selected multiple birth involving a mother aged 30 to 39, we sum the number of multiple births in that age group and divide it by the total number of multiple births for women aged 15 to 54.

P(30 to 39) = 2822 / (89 + 508 + 1631 + 2822 + 1855 + 374 + 119)

(b) To find the probability of a randomly selected multiple birth involving a mother who is not aged 30 to 39, we subtract the probability found in part (a) from 1.

P(not 30 to 39) = 1 - P(30 to 39)

(c) To determine the probability of a randomly selected multiple birth involving a mother aged less than 45, we sum the number of multiple births for age groups below 45 and divide it by the total number of multiple births for women aged 15 to 54.

P(less than 45) = (89 + 508 + 1631 + 2822 + 1855 + 374) / (89 + 508 + 1631 + 2822 + 1855 + 374 + 119)

(d) To find the probability of a randomly selected multiple birth involving a mother aged at least 40, we sum the number of multiple births for age groups 40-44 and 45-54, and divide it by the total number of multiple births for women aged 15 to 54.

P(at least 40) = (374 + 119) / (89 + 508 + 1631 + 2822 + 1855 + 374 + 119)

Interpretation: The answer to part (d) will determine whether a multiple birth involving a mother aged at least 40 is unusual. If the probability is less than 0.05, it can be considered unusual. Therefore, we need to compare the calculated probability to 0.05 and select the correct choice.

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The confidence interval is (63.909, 64.0907).

The confidence interval of a population mean is found using the formula:

CI = x ± z(σ/√n), where CI is the confidence interval, x is the mean, z is the z-score corresponding to the confidence level, σ is the standard deviation, and n is the population size.

In the question, we are given the confidence level, c = 95%.

Z-score corresponding to this, z = 1.96.

The mean of the population, x = 6.4.

The standard deviation of the population, σ = 0.3.

The population size, n = 42.

Thus, using the formula, the confidence interval is:

CI = 6.4 ± 1.96(0.3/√42),

or, CI = 6.4 ± 0.09073037.

Thus, the confidence interval is (64 - 0.09073037, 64 + 0.09073037), or, (63.909, 64.0907).

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Answer:

110°

Step-by-step explanation:

<A + <B = 180 because these angles are supplementary

70 + <B = 180

<B = 110°

Answer:

y = (19 - x) / -9

Step-by-step explanation:

Subtract x from both sides.

-9y = 19 - x

Divide both sides by -9

y = (19 - x) / -9

Hey there!

\(3-3k+7k=5b\)

Assuming you're trying to solve for b or k, I'll solve both.

Solve for b:

\(3-3k+7k=5b\)

We will need to flip the equation:

\(5b=4k+3\)

Now, let's divide both sides by 5:

\(\frac{5b}{5} =\frac{4k+3}{5}\)

\(b=\frac{4}{5} k+\frac{3}{5}\)

Solve for k:

\(3-3k+7k=5b\)

Let's add -3 to both sides:

\(4k+3+-3=5b+-3\\4k=5b-3\)

Now, let's divide both sides by 4:

\(\frac{4k}{4} =\frac{5b-3}{4}\)

\(k=\frac{5}{4} b+\frac{-3}{4}\)

Now, we've solved for b and k.

Hope this helps!

The rule of thumb for the dB gain if the number of sound sources increases tenfold is approximately 9 dB.

Assuming that each sound source produces sounds at the same level, the dB gain when the number of sources increases tenfold can be estimated using the following rule of thumb:

For every doubling of the number of sources, there is an increase in sound pressure level of approximately 3 dB.

Therefore, for a tenfold increase in the number of sources, we can estimate the dB gain by doubling the number of sources three times, which is equal to multiplying the number of sources by 2 x 2 x 2 = 8.

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If the number of sound sources increases tenfold, then the sound power level (SPL) will increase by 10 dB. This is known as the "doubling/halving rule" of the decibel scale.

The reason for this is that the decibel scale is logarithmic, with each 10 dB increase representing a tenfold increase in sound power. So, if the number of sources producing sound at the same level increases tenfold, then the total sound power will increase by a factor of 10, or 10 dB.

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The value of the diameter of the cone part of the funnel to the nearest tenth is,

⇒ d = 7.2 cm

We have to given that;

A funnel can hold 159π cm³ of fluid.

And, Its height (without the stem) is 12 cm.

Now, We know that;

Volume of cone = πr²h/3

Where, r is radius of cone.

Hence we get;

⇒ 159 = 3.14 × r² × 12 / 3

⇒ 159 = 12.56 r²

⇒ r² = 12.65

⇒ r = √12.65

⇒ r = 3.556

⇒ r = 3.6 cm

Thus, The value of the diameter of the cone part of the funnel to the nearest tenth is,

⇒ d = 2r

⇒ d = 2 x 3.6

⇒ d = 7.2 cm

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The p-value of the test claim is calculated as; p < 0.00001.

The z-score between two samples is expressed as;

z =  (x₁ – x₂)/√(σ₁²/n₁) + (σ₂²/n₂)

The parameters given are;

Sample mean 1: x₁ = 23.38

Sample mean 2: x₂ = 18.69

Sample standard deviation 1: σ₁ = ?

Sample standard deviation 2: σ₂ = ?

Sample size 1: n₁ = 40

Sample size 2: n₂ = 35

standard error = sample standard deviation /√(sample size)

σ₁ = 23.38/√40

σ₁ = 3.697

σ₂ = 18.69/√35

σ₂ =  3.159

Thus;

z = (23.38 – 18.69)/√(3.697²/40) + (3.159²/35)

z = (23.38 – 18.69)/0.792

z = 5.92

From online p-value from z-score calculator, p < 0.00001.

Thus, the p-value is less than the significance value and the results are significant and alternate hypothesis is accepted.

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In the 1984 domestic violence study conducted by Sherman and Berk, the ethical concern was that they potentially withheld a beneficial treatment.

The domestic violence study conducted by Sherman and Berk in 1984 raised an ethical concern in that they financially profited from the research. This raises the question of whether their motives were purely altruistic or whether they were driven by financial gain. Additionally, the study did not adhere to special protections for vulnerable populations such as women and children who may have been victims of domestic violence. This raises concerns about the validity and generalizability of the study's findings. Furthermore, the study potentially withheld a beneficial treatment, which raises questions about the ethical responsibility of researchers to ensure that their subjects receive the best possible care. Finally, there are also concerns that the researchers may have deceived their subjects, which raises questions about the integrity and transparency of the research process. In conclusion, the ethical concerns raised by this study highlight the need for researchers to carefully consider the impact of their research on vulnerable populations and to ensure that they adhere to the highest ethical standards.
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With given expression error=2%,  the filling machine is not working within specifications for this container of oats.

What exactly are expressions?

In mathematics, an expression is a combination of symbols, numbers, and operators (such as + and -) that represents a value or a quantity. It can contain variables, which are symbols that represent unspecified values, and constants, which are fixed values. Expressions can be simple, like "5 + 3", or more complex, like "3x² - 2xy + 7".

Now,

The oat-filling machine must fill each container with 16 ounces of oats with a 2% margin of error, according to the requirements. This means that the acceptable range of oat quantity in a container is from 16 - 0.0216 = 15.68 ounces to 16 + 0.0216 = 16.32 ounces.

Since the container in question has been filled with 16.5 ounces of oats, we can see that it is outside the acceptable range specified by the machine's specifications. Therefore, the filling machine is not working within specifications for this container of oats.

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The value of the given statement according to the mid point theorem is 5.

According to the statement

we have given that the equation and we have to integrate it with the help of the mid point theorem.

So, For this purpose, we know that the

The midpoint theorem states that “The line segment in a triangle joining the midpoint of two sides of the triangle is said to be parallel to its third side and is also half of the length of the third side.”

So, The given equation is

\(\int\limits^6_0 {Sinx } \, dx\)

where n = 4

And

The mid point formula is a with limits a to b is

f(x) dx ≈ Δx (f (x₀ + x₁)/2) + (f (x₁ + x₂)/2) + ... (f (xₓ₋₂ + xₓ₋₁)/2) + (f (xₓ₋₁ + x)/2))

Then

Where Δx = (b-a)/n

Recall that

a= 0

b= 64 and

n=4, therefore,

Δx = (64-0)/4 = 16

The next step requires that the interval [0,64] be divided into 4 sub-intervals with length = Δx =16

Hence, we've got, 0, 16, 32, 48, 64.

From this point, we calibrate the respective functions as follows:

f (x₀ + x₁)/2) = f ((0+16)/2) = f(8) = Sin (8) = 0.98935824662

(f (x₁ + x₂)/2) = f((16+32)/2) = f(24) =Sin (24) = -0.905578362

(f (x₂ + x₃)/2) = f((32+48)/2) = f(40) = Sin (40) = 0.74511316047

(f (x₃ + x₄)/2) = f((48+64)/2) = f(56) = Sin (56) = -0.52155100208

At this point, we sum up the above values derive the product of the total and Δx = 16

sin (x) dx = 16(0.98935824662 - 0.905578362 +  0.74511316047 - 0.52155100208)

= 16 (0.30734204301)

= 4.91747268816

\(\int\limits^6_0 {Sinx } \, dx = 5\)

So, The value of the given statement according to the mid point theorem is 5.

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Please attached a diagram drawn with MS Word based on the question parameters, and from a diagram from a similar question.

The length of the rectangle that contains 10 identical squares and has a width of 15 centimeters is 21 centimeters

A square is a quadrilateral that has four sides of the same length and the the four interior angles are each equal to 90°.

Some parts of the question appear missing, please find attached the design of a rectangle based on a similar GCSE question online. The width of the rectangle = 15 cm

The number of squares = 10

The number of squares that make up the width from the drawing = 5

The side length of the square is therefore; 15 cm ÷ 5 = 3 cm

The number of squares that make up the length of the rectangle = 7

The length of the rectangle is therefore, L = 7 × 3 cm = 21 cm

The length of the rectangle = 21 centimeters

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Answer:

The answer is m = 8 + 2p.

m = 2n

n = 4 + p

m = 2(4 + p) = 8 + 2p

Therefore, the only formula that is also true is m = 8 + 2p.

Step-by-step explanation:

Answer:

From the given equation-

4(3p+2)−5(6p−1)=2(p−8)−6(7p−4)

⇒12p+8−30p+5=2p−16−42p+24

⇒−18p+13=−40p+8

⇒−18p+40p=8−13

⇒22p=−5

⇒p=

22

−5

.

Step-by-step explanation:

basicly what I said

Answer:

25.20

Step-by-step explanation:

Answer:

25 6/29

Step-by-step explanation:

use long division, and cancel common factors

Answer:

24%

Step-by-step explanation:

we subtract to see how much it increased

62-50=12

Now divide 12 by 50 to get percent

12/50

0.24

0.24x100

24%

Hopes this helps please mark brainliest

Range: All real numbers greater than or equal to 3. The Option C.

To find the range of the function, we need to determine the set of all possible y-values that the function takes.

Since the line crosses the y-axis at (0, 2), we know that the function's range includes the value 2. Also, since the line turns at (-1, 3), the function takes values greater than or equal to 3.

Therefore, the range of the function is all real numbers greater than or equal to 3.

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Answer:

3a - 2b - c + 16 = 23

Step-by-step explanation:

so we want to write an equetion which containe a, b and c so we have given

4a - 2b = 10 and a + c = 3

so we are going to differentiate 10 to 7 + 3 it will be

4a - 2b = 10

4a - 2b = 7 + 3 ...then we insert a + c in place of 3 b/c they are equal

4a - 2b = 7 + a + c .... we take to the left side of the equal sighn

4a - a - 2b - c = 7

3a - 2b - c = 7

thrn if we want to write the equetion =23 we add 16 both side 3a - 2b - c + 16 = 23 .

Answer: $15.90/hr

Step-by-step explanation:

We need to add 6% to her $15/hr current pay.  This can be calculated with:

$15/hr *(1+0.06) = $15.90/hr

The "(1+0.06)" represents a) 1  the current salary, and b) the 6% raise.

Answer:  6000ft2

Step-by-step explanation: Multiply 15*20*20 to find the area of a figure.

Answer: D. -0.002

Step-by-step explanation: You always do the stuff in parenthesis first (P.E.M.D.A.S.). -1/6 is about -0.167. Next you do -0.167 to the fourth power, which is -0.0007777963. Finally, you multiply that number and 2. And BOOM: you get -0.0015555926, which rounds up to -0.002!