Can someone please help me with these two problems

In summary, the Brønsted-Lowry acids among the given species are:
(a) H2PO4
(c) HCl

Brønsted-Lowry acids are species that can donate a proton (H+) in a chemical reaction. Let's analyze each option to determine which of the following species can be Brønsted-Lowry acids:

(a) H2PO4: This is the hydrogen phosphate ion. It can donate a proton to form HPO4^2-. Therefore, H2PO4 can be a Brønsted-Lowry acid.

(b) NO3: This is the nitrate ion. It does not contain a hydrogen atom that can be donated as a proton. Therefore, NO3 cannot act as a Brønsted-Lowry acid.

(c) HCl: This is hydrochloric acid. It readily donates a proton (H+) in water to form H3O+. Therefore, HCl is a Brønsted-Lowry acid.

(d) Cro: It seems there might be a typo in this option as Cro is not a known species. However, if we assume it was meant to be CrO, this is the chromate ion. It does not contain a hydrogen atom that can be donated as a proton. Therefore, CrO cannot act as a Brønsted-Lowry acid.

In summary, the Brønsted-Lowry acids among the given species are:
(a) H2PO4
(c) HCl

I hope this helps! If you have any further questions, feel free to ask.

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H2PO4 and HCl can be Brønsted-Lowry acids because they are capable of donating protons. NO3 cannot act as a Brønsted-Lowry acid because it does not have any protons to donate. The status of Cro as a Brønsted-Lowry acid is uncertain due to insufficient information.

The Brønsted-Lowry theory defines an acid as a species that donates a protons (H+) and a base as a species that accepts a proton.

(a) H2PO4 is a species that can act as a Brønsted-Lowry acid because it can donate a proton. The H+ ion can be removed from H2PO4, leaving behind the HPO42- ion.

(b) NO3 is not a species that can act as a Brønsted-Lowry acid because it cannot donate a proton. The NO3- ion is already a complete species with a full octet and does not have any protons to donate.

(c) HCl is a species that can act as a Brønsted-Lowry acid because it can donate a proton. When HCl dissolves in water, it forms H+ and Cl- ions.

(d) Cro is not a well-known species, so it's difficult to determine if it can act as a Brønsted-Lowry acid without further information.

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Answer:

60%

Step-by-step explanation:

1.original price-sales price

189-75.60

113.40

2.113.40/189

 0.6

3.0.6*100

 60%

The given equation of lines for a and e are parallel as their slopes are equal, c is perpendicular as the slopes are negative inverses and b, d are neither parallel nor perpendicular. This can be found using the slope of the given equations of the lines.

To determine whether two lines are parallel, perpendicular, or neither, we can use the following rules:

Two lines are parallel if they have the same slope.
Two lines are perpendicular if the product of their slopes is equal to -1.
Two lines are neither parallel nor perpendicular if they have different slopes and the product of their slopes is not equal to -1.

Let's apply these rules to each of the given lines:

a. y = 5x − 2 and y = 10x − 4

Both lines have a slope of 5, so they are parallel.

b. y = -2x − 6 and 2y + 4x = 12

We can rewrite the second equation as y = -2x + 6. The slopes of these lines are not equal, so they are not parallel. We can also see that the product of the slopes is not equal to -1, so they are not perpendicular. Therefore, these lines are neither parallel nor perpendicular.

c. y = 10x − 2 and y + 10x = 0

We can rewrite the second equation as y = -10x. The slopes of these lines are negative inverses of each other, so they are perpendicular.

d. 4y + 3x = -18 and 3y = 4x + 7.

We can rewrite the first equation as y = -(3/4)x + 4.5. The slopes of these lines are not equal, so they are not parallel. We can also see that the product of the slopes is not equal to -1, so they are not perpendicular. Therefore, these lines are neither parallel nor perpendicular.

e. 5y = 7x + 2 and y = fx + 12

We can rewrite the first equation as y = (7/5)x + (2/5). The slopes of these lines are equal, so they are parallel.

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Answer:

A hexagon

Step-by-step explanation:

A hexagon - - - the allen wrench has 2 hexagonal heads. See attached pic.

The geometric shape that forms the hole that fits an allen wrench is a hexagon, which is a six-sided polygon with straight sides and angles.

The geometric shape hexagon-shaped hole in an allen wrench, also known as a hex key, is designed to fit tightly over the hexagonal socket of a screw or bolt head. A hexagon is a six-sided polygon, meaning it has six straight sides and angles. In the case of an allen wrench, the hexagon has internal angles of 120 degrees and opposite sides that are parallel.

The hexagonal shape of the hole in the wrench allows for a tight and secure fit onto the corresponding hexagonal socket of the screw or bolt head. This design ensures that the wrench can apply a significant amount of torque to the fastener without slipping, which is essential for many applications in construction, mechanics, and other industries.

The use of a hexagonal shape also allows for greater precision and control when turning the screw or bolt, making it easier to achieve the desired level of tightness. Overall, the hexagon is an ideal shape for the hole in an allen wrench due to its strength, stability, and precision.

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Answer:

Quadrant 3

Step-by-step explanation:

180 in basically turning the total opposite

Answer:

B. 1. x^6

2. -6a^7

3. r^11

4. x^6

5.a^3b^6

6.x^14

7. 12y^8

8. 55x^4y^6

9. 30m^4n^4

10. 6a^10b^6c^16

C. 1. 40m+60n-810

2. 12am^2 - 8an- 16al^3+4ap

3. 2xmn-3ymn-4zmn

4. 20bx^2-8bx+20b

5. -28xa+4xb-14x

6. y^2 - 4

7. 4x^2 - 16

8. 16b^2 - 4

9. 25a^2-49

10. 9m^2-49

The point estimate of the difference in the population mean exercised between underclassmen and upperclassmen is 0.16 hours.

In this case, we are estimating the difference in population means between two groups - upperclassmen and underclassmen. The point estimate is calculated by subtracting the sample mean of the underclassmen from the sample mean of the upperclassmen, which gives us

0.76 - 0.60 = 0.16.
the point estimate of the difference in population mean exercised between underclassmen and upperclassmen is 0.16 hours, which was calculated by subtracting the sample mean of underclassmen from the sample mean of upperclassmen.
Point Estimate = (Sample Mean of Upperclassmen) - (Sample Mean of Underclassmen)
Point Estimate = (0.76) - (0.60)
Point Estimate = 0.16

Hence, the point estimate of 0.16 suggests that, on average, upperclassmen exercised 0.16 hours more than underclassmen in the past 24 hours. This is a rough estimate of the difference between the two population means based on the provided sample data.

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Answer:

a_n = 5 × 3^(n - 1)

Step-by-step explanation:

The first term is 5. Each subsequent term is the previous term multiplied by 3.

a_1 = 5 × 3^0

a_2 = 15 = 5 × 3^1

a_3 = 45 = 5 × 3²

Notice that the exponent of the 3 is 1 less then the term number.

a_n = 5 × 3^(n - 1)

Answer:

b

Step-by-step explanation:

The angle B has a measure of  121 degrees

Angles are formed when two or more lines intersect. This in other words means that angles is the measure of space between the intersection of rays or lines

The angles are given as

A = 2x + 29

B = 3x - 17

Also, we have:

The angles are vertical angles

Vertical angles are congruent angles

This means that

A = B

So, we have

2x + 29 = 3x - 17

Evaluate the like terms

x = 46

Substitute x = 46 in B = 3x - 17

B = 3 x 46 - 17

Evaluate

B = 121

Hence, the measure of the angle B is 121 degrees

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Answer:

Step-by-step explanation:

b=(3x-17) degrees.

For the given square, m∠OKL=45° and m∠MOL=90°.

A square is a regular quadrilateral in Euclidean mathematics because it has four equal sides and four equal angles (right angles, 90-degree angles). It can also be explained as a rectangle with two adjacent sides that are of identical length. It is the only regular polygon whose diagonals are all the same length and whose internal, central, and exterior angles are all equal (90°).

In mathematics, an angle bisector is a line that divides an angle into two equal angles. The term "bisector" refers to a device that divides an object or a shape into two equal sections. An angle bisector is a beam that divides an angle into two identical segments of the same length.

Angle bisector points are equally spaced from both angle lines.

Any angle, including acute, obtuse, and right angles, can have an angle bisector traced to it.

In the given square,

The diagonals NL and KM are angle bisectors of ∠K, ∠L, ∠M and ∠N.

Therefore, ∠OKL= 90/2

                  ∠OKL=45°

We know that, in a square, diagonals are equal and bisect each other at right angles.

Therefore, ∠MOL=90°

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The exponential model that calculates the concentration of bacteria after x weeks can be represented by the equation B(x) = 2.1 million * (3^x), the concentration after 1.6 weeks would be approximately 14.87 million bacteria per milliliter.

This equation assumes that the concentration triples each week, starting from the initial concentration of 2.1 million bacteria per milliliter.

To estimate the concentration after 1.6 weeks, we can substitute x = 1.6 into the exponential model. B(1.6) = 2.1 million * (3^1.6) ≈ 14.87 million bacteria per milliliter. Therefore, after 1.6 weeks, the estimated concentration of bacteria in the river would be approximately 14.87 million bacteria per milliliter.

The exponential model B(x) = 2.1 million * (3^x) represents the concentration of bacteria after x weeks, where the concentration triples each week. By substituting x = 1.6 into the equation, we estimate that the concentration after 1.6 weeks would be approximately 14.87 million bacteria per milliliter.

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Answer: the answer you chose was correct x+y <1000

                                                                       x=<75

Step-by-step explanation:

first they are selling 3 dollar and 4 doallar items to get above 1000 dollars

then they sayed at least 75 bags of hot chips so it has to be 75 or higher

In a right-angled triangle, the Pythagoras theorem is used to find the hypotenuse. Then the hypotenuse is 32.2 inches.

It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function.

Given

A right triangle has legs measuring 16 inches And 28 inches.

We know the Pythagoras theorem

\(\rm Hypotenuse ^2 = Base ^2 + Perpendicular^2\)

Then the hypotenuse will be.

\(\rm Hypotenuse ^2 = Base ^2 + Perpendicular^2\\\\\rm Hypotenuse ^2 = 16^2 + 28^2\\\\ \rm Hypotenuse ^2 = 256 + 784\\\\\rm Hypotenuse ^2 = 1040\\\\\rm Hypotenuse \ = 32.2\)

Thus, the hypotenuse is 32.2 inches.

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Answer:

C

Step-by-step explanation:

A to B

A line segment is when two dots are connected with a solid line.

A to C is incorrect because it has arrows.

The above question is a mathematical proof of the relationship between Lines and angles related to a Rhombus. See the proof below.

We know,

A Rhombus is a parallelogram with four sides (that is a quadrilateral). It's sides however are all of equal length.

we have,

∠DEC ≅ ∠BFC  Reason = All Right Angles with Equal dimensions are congruent.

∠C ≅ ∠C  Reason = It is the same angle for the two Right angles above which are congruent, hence Reflexive Property.

Δ DEC ≅ Δ BFC  Reason = Angle Angle Side. The triangles are said to be congruent when two angles and a non-included side of one triangle match the corresponding angles and sides of another triangle.

 ≅   Reason = The corresponding parts of congruent triangles are congruent. Also, it is a parallelogram with all congruent sides.

ABCD is a Rhombus Reason = Its sides are all congruent.

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complete question:

Given: ABCD is a parallelogram, FC is congruent to EC, DE bisects BC and BF bisects DC Prove: ABCD is a rhombus

Answer:

not equivalent to meteorologists ratio

Step-by-step explanation:

meteorologists ratio is

rainy days : sunny days = 2 : 5

last months weather is

rainy days : sunny days

= 10 : 20 ( divide both parts by LCM of 10 )

= 1 : 2 ← not equivalent to 2 : 5

Answer:

10

Step-by-step explanation:

I hope you remember this. 5+5=10

Answer:

the next three terms are 2,7,12,17,22,27,32

have a nice day

Answer:

n + 5

Step-by-step explanation:

n+5

2,7,12,17,22,27,32

lying disc  23 = 72 (rounded to nearest integer) WRONG!

A circle's diameter is multiplied by to determine its circumference (pi). You can also determine the circumference by multiplying 2radius by pi (=3.14).

I will find the circumference of each object to see if it matches the circumferences on the table.

C=d or C=2r are two formulas that can be used to determine a circle's circumference. We can enter the numbers for the circle's diameter, which is 8 cm, and an approximate value for pi, which is 3.14, into the formula C=d. The formula changes to C=(3.14)(8), which becomes 25.12 when simplified.

On a half-dollar coin, 3 equals 10 (rounded to the nearest integer).

Flying disc: (rounded to nearest integer) 23 = 72 FALSE!

Jar lid: 8 equals 25 (rounded to nearest integer), which is accurate!

Flower pot: 15 equals 48 (rounded to the next integer).

The flying disc's circumference was computed from the table to be 28, but we determined from the diameter that it should actually be 72, hence the measurement is incorrect.

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\(\Large\texttt{Answer}\)

\(\bf{\cfrac{1}{2}}\)

\(\overline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad}\)

\(\Large\texttt{Process}\)

Do you remember that we cannot add fractions when they have unlike denominators? We can onyl add fractions as long as they have the same denominator!

So here's the big idea: fractions must have the same denominator.

If we multiply the first fraction by 2, then both fractions will have the same denominator. *

* Why 2??

-  Because:

We need to find the least common multiple of 3 and 6, which is 6. Next, what should 3 be multiplied by to result in 6? That's right, 2.

Also, we can only multiply the denominator by 2 as long as we multiply the numerator by 2!

So that's why we multiply the whole fraction by 2

\(\bf{\cfrac{1\times2}{3\times2}+\cfrac{1}{6}}\)

Watch what happens

\(\bf{\cfrac{2}{6}+\cfrac{1}{6}}\)

Add the numerators

\(\bf{\cfrac{2+1}{6}}\)

\(\bf{\cfrac{3}{6}}\)

Simplifying the fractions

\(\bf{\cfrac{3\div3}{6\div3}}\)

\(\bf{\cfrac{1}{2}}\)

Hope that helped

Answer: 1 / 2

Step-by-step explanation:

Given information

\(\frac{1}{3} ~+~\frac{1}{6}\)

Convert the denominator (3, 6) into the same common denominator

Least Common Multiple (LCM) of 3 and 6 = 6

\(=\frac{1~*~2}{3~*~2} ~+~\frac{1}{6}\)

\(=\frac{2}{6} ~+~\frac{1}{6}\)

Combine two fractions

\(=\frac{2~+~1}{6}\)

\(=\frac{3}{6}\)

Simplify the fraction by dividing 3 on both numerator and denominator

\(=\frac{3~/~3}{6~/~3}\)

\(=\Large\boxed{\frac{1}{2} }\)

Hope this helps!! :)

Please let me know if you have any questions

Answer:

Step-by-step explanation:

First of all, I have a strong feeling that that is supposed to be

\(log_2(32)=y\) so I'm going to go with that. We can solve for y by rewriting that in exponential form. Exponential form and log form are inverses of each other. If the log form of an equation is

\(log_b(x)=y\), the exponential form of it is

\(b^y=x\). We will apply that here to solve for y:

\(2^y=32\)

which is asking us, "2 to the power of what equals 32?". We can use our calculator to raise 2 to consecutive powers til we reach the one that gives us a 32, or we could solve it by writing the 32 in terms of a 2:

\(2^y=2^5\)

Since both bases are the same, 2, then the exponents are equal to one another. y = 5. This is an important rule to remember while solving either log or exponential equations.

Yes, I can help them determine how they did within their respective groups. A higher Z-score indicates a faster time compared to the average for their group, while a lower Z-score indicates a slower time.

To do this, we will calculate the standard score or Z-score for each of them, which measures how many standard deviations above or below the mean their finishing time was. Calculation is as follows:

For Leo:

Z = (4948 - 4313) / 583 = 1.01

For Mary:

Z = (5513 - 5261) / 807 = 0.33

So, Leo finished 1.01 standard deviations above the mean for the Men, Ages 30 - 34 group, while Mary finished 0.33 standard deviations below the mean for the Women, Ages 25 - 29 group.

As for your second question, if the distributions of finishing times were not nearly normal, then the values of the standard score would change. This is because the standard score is calculated using the mean and standard deviation, which are important parameters of a normal distribution, these parameters may not accurately represent the data, and therefore the standard score would not be an accurate measure of relative performance.

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The number of individuals in Chicago that will respond positively to Program 2 is 22 out of 25.

Probability is the occurence of likely events. It is the area of mathematics that deals with numerical estimates of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1.

Given that the chances of a positive response from Chicago residents to two government programs are 65.9% for Program 1 and 87.5%  for Program 2, the likelihood of a positive response for Program 2 given that the person is from Los Angeles must be calculated as follows:

87.5 100 = X

43.75 / 50 = X

21.875 / 25 = X

Therefore, 22 out of 25 individuals in Chicago  will respond positively to Program 2.

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Answer:B

Step-by-step explanation:

Work Shown:

\(-\frac{5}{4} \div \frac{1}{4}\\\\-\frac{5}{4} \times \frac{4}{1}\\\\-\frac{5\times4}{4\times1}\\\\-\frac{5}{1}\\\\-5\)

Whenever you divide fractions, you flip the second fraction and multiply. In this case, the '4's cancel.

Answer:

Gretchen’s data values are more spread out than Manuel’s data values because the mean and median median and interquartile range mean and standard deviation standard deviation and interquartile range are larger for Gretchen's data than for Manuel’s data.

Step-by-step explanation:

I got it right on edmentum!!!

Answer:Gretchen’s data values are more spread out than Manuels data values because the standard devition and interquartile range are larger for gretchens data than for manuels Data

.Step-by-step explanation:

Its right on edmentum