PLEASE HELP ME ON MATH ASAP

Answer:

10

Step-by-step explanation:

10×10×10 = 1000

(10³ = 1000)

The concentration of H+ ions at a pH = 2 is 10⁻² mol/L

Theconcentration of H+ ions at a pH = 6 is 10⁻⁶ mol/L

And there are 10,000 times more H⁺ ions in a solution of pH = 2 than that of pH = 6

In this question we have been given the pH of the solution.

We need to find the concentration of H+ ions in the given solution.

The H⁺ ion concentration can be calculated from pH values using the equation: pH = - log [H⁺]

at a pH = 2,

Using the above equation, 2 = - log [H⁺]

[H⁺] = 10⁻² mol/L

at a pH = 6,

Using the above equation, 6 = - log [H⁺]

[H⁺] = 10⁻⁶ mol/L

We need to find how many more h ions are there in a solution at a ph = 2 than in a solution at a ph = 6

Consider the ratio of [H⁺] for pH = 2 and pH = 6, we have

10⁻²/10⁻⁶ = 10⁴

Therefore,  there are 10,000 times more H⁺ ions in a solution of pH = 2 than that of pH = 6

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Answer:

Answer is 4+4 root 10 in.^2

Step-by-step explanation:

Here length(l)=2 in.

width(w)=2 in.

height(h)=3 in.

The limit as x approaches one is infinity.

\(lim_{x\to1}\frac{x + x {}^{2} + {x}^{3} + ... + {x}^{100} - 1000}{1 - x} =\infty\)

The limit of a function, f(x) as x approaches a given value b, is define as the value that the function f(x) attains as the variable x approaches the given value b.

From the given question, as x approaches 1,

substituting x into 1 - x,

the denominator of the function approaches zero, because 1 - 1 = 0 and thus the function becomes more and more arbitrarily large.

Thus, the limit of the function as x approaches 1 is infinity.

Therefore,

The limit (as x approaches 1)

\(lim_{x\to1}\frac{x + x {}^{2} + {x}^{3} + ... + {x}^{100} - 1000}{1 - x} = \infty \)

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Angle 1 - 72 degrees

Angle 2 - 36 degrees

Angle 3 - 16 degrees

Angle 4 - 144 degrees

I hope this helps! :)

Answer:

4×3/4

Step-by-step explanation:

hope it helps!!!!

Answer:

\(\frac{3}{16}\)

Step-by-step explanation:

This can be changed into the following equation:

\(\frac{3}{4}\) ÷ 4 =

\(\frac{3}{4}\)÷\(\frac{4}{1}\)

Step 1 - Flip the second fraction so the numerator is the denominator:

\(\frac{4}{1}\) becomes \(\frac{1}{4}\)

Step 2 - Swap the division sign for the multiplication sign and multiply the two numerators together as well as the two denominators:

\(\frac{3}{4} * \frac{1}{4}\)

\(\frac{3 * 1}{4 * 4}\) = \(\frac{3}{16}\)

This cannot be simplified so the answer is:

\(\frac{3}{16}\)

Hope this helps!

Answer:

Perimeter = 90

Step-by-step explanation:

We're going to start with HI and go around the circle (and triangle, clockwise) see image. HI is 11. From H to G, then also has to be 11.

Subtract 26 - 11 to find LG. LG is 15.

If LG is 15, then LK is also 15. Subtract 34 - 15 to find JK.

JK is 19, so JI is also 19.

Two sides of the triangle are 34 and 26. The other side is 19+11=30.

Perimeter = 34+26+30

= 90

Answer:

9

Step-by-step explanation:

9 = 3 * 3

27 =3 * 3 * 3

GCF = 3*3 = 9

The diagonal of a parallelogram bisects, so BE and DE are congruent, and AE is congruent with itself.

Assume that all four of it's angles at point E are 90°.

and Therefore, it is a congruence.

Triangles ABE and ADE are congruent through a side.

Therefore AB and AD are congruent.

Since opposite sides of a parallelogram are congruent, AD and BC are congruent and AB and CD are congruent.

Therefore all four sides are congruent. Therefore ABCD is a rhombus.

A parallelogram is a two-dimensional flat shape which is formed from two pairs of ribs and each of them is the same length and has two angles that are the same size in front of it.

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Answer:

glad it helps

Step-by-step explanation:

(4-5)- (13-18+2)

(-1)-13+18-2

= 2

On solving the provided question, we can say that in the quadrilateral BD = 11, BC = 8, DC = 8 and perimeter of ABCD is = 38

A quadrilateral is a four-sided polygon in geometry that has four edges and four corners. The word is a derivative of the Latin words quadri and latus (meaning "side"). Having four sides, four vertices, and four corners, a rectangle is a two-dimensional form. Concave and convex come in primarily two varieties. Additionally, there are several subclasses of convex quadrilaterals, including trapezoids, parallelograms, rectangles, rhombuses, and squares. Four straight sides make up a rectangle, which is a two-dimensional form. There are several different types of quadrilaterals, including parallelograms, trapezoids, rectangles, kites, squares, and rhombuses.

in the quadrilateral

BD = 11 ( equal angle have equal sides)

BC = 8

DC = 8

perimeter of ABCD is = 38

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the rate at which water is being pumped into the tank in cubic centimeters per minute. is 1508527.582 cm³/min

The net rate of flow dV/dt = flow rate in - flow rate out

Let flow rate in = k. Since flow rate out = 8900 cm³/min,

dV/dt = k - 8900

Now, the volume of a cone V = πr²h/3 where r = radius of cone and h = height of cone

dV/dt = d(πr²h/3)/dt = (πr²dh/dt)/3 + 2πrhdr/dt (since dr/dt is not given we assume it is zero)

So, dV/dt = (πr²dh/dt)/3

Let h = height of tank = 11 m, r = radius of tank = diameter/2 = 3/2 = 1.5 m, h' = height when water level is rising at a rate of 21 cm/min = 3.5 m and r' = radius when water level is rising at a rate of 21 cm/min

Now, by similar triangles, h/r = h'/r'

r' = h'r/h = 3.5 m × 1.5 m/12 m = 5.25 m²/12 m = 2.625 m = 262.5 cm

Since the rate at which the water level is rising is dh/dt = 21 cm/min, and the radius at that point is r' = 262.5 cm.

The net rate of increase of water is dV/dt = (πr'²dh/dt)/3

dV/dt = (π(262.5 cm)² × 21 cm/min)/3

dV/dt = (π(68906.25 cm²) × 21 cm/min)/3

dV/dt = 1447031.25π/3 cm³

dV/dt = 4545982.745/3 cm³

dV/dt = 1515327.582 cm³/min

Since dV/dt = k - 6800 cm³/min

k = dV/dt - 6800 cm³/min

k = 1515327.582 cm³/min - 6800 cm³/min

k = 1508527.582 cm³/min

So, the rate at which water is pumped in is 1508527.582 cm³/min

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The nonresponse caused the results of the survey to be biased as C. Those who did not respond caused a violation of the assumption of independence.

It should be noted that each person in a simple random sample of 1,200 received a survey, and 325 people returned their survey. How could nonresponse cause the results of the survey to be biased?

In this case, the nonresponse caused rhe results of the survey to be biased as those who did not respond caused a violation of the assumption of independence. Those who did not respond may differ in some important way from those who did respond

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Answer:

x<6

Step-by-step explanation:

Answer:

Yellow

Step-by-step explanation:

Answer: 15x^2 + 8x - 8

Step-by-step explanation:

1) Add them together

(15x^2 + 3x - 4) + (5x - 4)

2) Combine like terms

15x^2 + 8x - 8

Answer:

15x^2+8x-8

Step-by-step explanation:

when asking for the sum of 2 polynomials, the question is simply asking you to add like terms

15x^2 (nothing to add so this stays the same)

3x+5x=8x

-4+(-4)=-8

add the bolded terms to get

15x^2+8x-8

The maximum number of 130 kg crates that can be loaded into the shipping container is 137 which is calculated using linear inequality.

A linear inequality in mathematics is an inequality involving a linear function. One of the symbols for inequality is found in a linear inequality. It displays non-equal data in graph style.

An example of linear inequality is : 2x+8>18

Linear inequality can be represented using several symbols such as:

<,>,≥ and ≤.

Let us consider there are x number 130 kg crates.

The shipping container can take a maximum weight of 26500 Kilogram.

There is already 7700 kilograms of shipment loaded

Therefore we can write an linear inequality in x such as:

130x+7700 ≤ 256500

Subtracting 7700 from both sides we get:

130x+7700-7700 ≤ 25600-7700

or,130x ≤ 17900

Dividing both sides by 130

or, x ≤ 137.69....

Now we can say as the crates must be whole therefore the maximum number of 130 kg crates that the shipping container can hold is 137.

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The random selection of a sample to represent the proportions of a population divided by sex and size of school attended is called stratified random sampling.

Stratified random sampling is a sampling method used when a population is divided into subgroups or strata based on certain characteristics, such as sex and size of school attended. In this method, a random sample is taken from each subgroup proportionate to its size in the population. This ensures that each subgroup is represented in the sample and reduces the chance of sampling bias.

For example, if the population of high school seniors is divided into two strata based on sex and two strata based on size of school attended, there would be four subgroups. A random sample would then be taken from each subgroup to create a representative sample of the entire population.

Stratified random sampling is commonly used in research studies and surveys to ensure that the sample accurately represents the population being studied. It allows for more precise estimates and statistical inferences to be made about the population as a whole.

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Answer:

i think its help..............

Answer:

\( \displaystyle \sin (x) - \frac{ { \sin}^{3} (x)}{3} + \rm C\)

Step-by-step explanation:

we would like to integrate the following integration

\( \displaystyle \int \cos ^{3} (x) dx\)

in order to do so rewrite

\( \displaystyle \int \cos ^{2} (x) \cos(x) dx\)

we can also rewrite cos²(x) by using trigonometric indentity

\( \displaystyle \int( 1 - \sin ^{2} (x) )\cos(x) dx\)

to apply u-substitution we'll choose

\( \rm \displaystyle u = \sin ^{} (x) \quad \text{and} \quad du = \cos(x) dx\)

thus substitute:

\( \displaystyle \int( 1 - {u}^{2} )du\)

apply substraction integration and:

\( \displaystyle \int 1du - \int {u}^{2} du\)

use constant integration rule:

\( \displaystyle u - \int {u}^{2} du\)

use exponent integration rule:

\( \displaystyle u - \frac{ {u}^{3} }{3} \)

back-substitute:

\( \displaystyle \sin (x) - \frac{ { \sin}^{3} (x)}{3} \)

finally we of course have to add constant of integration:

\( \displaystyle \sin (x) - \frac{ { \sin}^{3} (x)}{3} + \rm C\)

Standard deviation and median are less affected by extreme scores, while mode is not affected at all since it represents the most frequently occurring value.

The measure of variation affected most by a few extreme scores is the range, as it considers only the difference between the highest and lowest values in a dataset. However, the mean can also be influenced by extreme scores, causing it to deviate from the central tendency. Standard deviation and median are less affected by extreme scores, while the mode is not affected at all since it represents the most frequently occurring value.

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The measure of variation affected most by a few extreme scores is the range. The range is the difference between the

highest and lowest values in a data set. Extreme scores significantly increase the range, making it a sensitive measure

of variation.

The measure of variation that is affected most by a few extreme scores is the standard deviation.

The reason for this is that the standard deviation is calculated by taking the square root of the sum of squared

deviations from the mean, and the squared deviations from the mean are particularly sensitive to extreme scores.

On the other hand, the mode, range, median, and mean are less affected by a few extreme scores.

The mode is simply the most frequently occurring value in a dataset and is not affected by extreme scores.

The range is the difference between the highest and lowest values in a dataset and can be affected by extreme scores, but only to a limited extent.

The median is the middle value in a dataset, and it is also not affected by extreme scores unless they are extreme

enough to change the position of the middle value.

The mean is the average value in a dataset, and while it can be influenced by extreme scores, its effect is typically less

pronounced than on the standard deviation.

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The thing that Marlene should to find the square root of 42 will be B. She should find an average of 6.4 and 6.5.

It should be noted that the main thing that can be deduced from the information is to find the square root of 42 based on the information given.

In this case, some earlier numbers have been given and their square roots are illustrated.

Therefore, the thing that Marlene should to find the square root of 42 will be that she should find the average of 6.4 and 6.5.

It should be noted that the square root of 42 falls between 6.4 and 6.5.

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The height of an equilateral triangle with sides that are 12 cm long is approximately 10.4 cm.

An equilateral triangle is a triangle whose sides are equal in length. All the angles in an equilateral triangle measure 60 degrees. The height of an equilateral triangle is the line segment that goes from the center of the triangle to the opposite side, perpendicular to that side. In order to find the height of an equilateral triangle, we can use a special right triangle formula: 30-60-90 triangle ratio.

Let's look at the 30-60-90 triangle ratio:
In a 30-60-90 triangle, the length of the side opposite the 30-degree angle is half the length of the hypotenuse, and the length of the side opposite the 60-degree angle is √3 times the length of the side opposite the 30-degree angle. The hypotenuse is twice the length of the side opposite the 30-degree angle.

Using the 30-60-90 triangle ratio, we can find the height of an equilateral triangle as follows:

Since all the sides of an equilateral triangle are equal, the height of the triangle is the length of the side multiplied by √3/2. Therefore, the height of an equilateral triangle with sides that are 12 cm long is:

height = side x √3/2
height = 12 x √3/2
height = 6√3
height ≈ 10.4 cm
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The 95% confidence interval for the average number of units that students in their college are enrolled in is (11.46,12.53)

We are given the number of students, n =  46, and  the mean of the sample which is x= 12.5, and the standard deviation of the sample which is s= 1.8 , the formula  we are referring to for calculating the confidence interval which is :

x ± t (s/√(n))

since for  this case, the degree of freedom is one less than the mean, which is 45, the critical value for the confidence of 95% with  the degree of freedom of 45 is 2.015

x + t(s/√(n)) = 12.5 +2.015*(1.8/6.78)=  12.53

x - t(s/√(n))= 12.5 -2.015*(1.8/6.78)= 11.46

The interval is (11.46,12.53)

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a) In the given triangles : ABC & FLE

The ratio of coorespodings sides are :

as the ratio of the corresponiding sides are equal to 1

If the ratio of corresponding sides of two triangles are equal then the triangles are similar

Thus, Triangle ABC is similar to triangle FLE

b) In the given two triangles : ABC & FLE

The length of corresponding sides of triangle are equal

AB = FL = 6

BC = LE = 4.5

CA = EF = 7.5

All the sides are equal, thus by Side Side Side Congurency, triangle ABC and FLE are congurent

c)

In similar triangles, the side ratio should be equal where as in congurent the sides should be equal.

As if all the sides are equal then, the corresponding sides ratio are equal to 1, thus they varify the property of similar triangle,

Hence, Triangle are also similar if all sides are equal

It concluded that : All congurent triangles are similar triangle but all similar triangle are not congurent.

The mathematics choose the symbol ≅, because it show a sign of equal and by ~ it show similar.

The measure of each angle are

The fundamental characteristics listed below make it simple to recognise parallel lines.

Given:

<4 = 134

So, <4 = <2 = 134 (Vertical opposite angle)

<4= <8= 134 (Corresponding Angle)

<1 + <4 = 180 (Linear Pair)

<1 = 180-134

<1 = 46

<1 = <3= 46 (Vertical opposite angle)

<2= <6= 164 (Corresponding Angle)

<3= <7 (Corresponding Angle)

<1= <5 (Corresponding Angle)

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The height of cliff is 62.50 ft

Height is the measurement of an item in the vertical direction, whereas distance is the measurement of an object in the horizontal direction from a certain location.

Given that, the angle of elevation from point A to the top of a cliff is 38°, the point A is 80 feet from the base of the cliff,

Refer to figure attached,

The scene is making a right triangle, with an acute angle 38°, and base (distance from point to base of the cliff) 80 ft, we need to find the length of perpendicular line which is the height of the cliff,

Therefore,

We know that,

tan β = ratio of the perpendicular side to base of a triangle,

Therefore,

tan 38° = AB / 80

AB = 62.50

Hence, the height of cliff is 62.50 ft

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To correctly identify formatted scientific notation, we need to look for numbers expressed in the form of a × 10^b, where "a" is a number between 1 and 10, and "b" is an integer.

Here are the correctly formatted scientific notations from the options provided:

- 8 × 10^6 (this is equivalent to 8,000,000)
- 6.1 × 10^12 (this is equivalent to 6,100,000,000,000)
- 0.802 × 10^4 (this is equivalent to 8,020)
- 4.532 × 10^-9 (this is equivalent to 0.000000004532)

The other options are not in the correct scientific notation format.

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Answer:

20 minutes

Step-by-step explanation:

Answer:

Tanya misses the class for 20 minutes

Step-by-step explanation:

11:50  to 12: 00        ⇒  10 minutes

12:00 to 12: 10         ⇒ 10 minutes  

                                     20 minutes

Answer:

for the 10 column it is $150.00 the next column is 15 and for 200 it is $250.00

Step-by-step explanation:

Answer:

Because:

30.5^2+73.2^2=79.3^2

=> Right triangle

=> Cos0 = 73.2/79.3 => A

Step-by-step explanation: