Really need help solving this..Having troubleThis is from my ACT prep guide

Therefore, the H attention in a result with a pH of 4 is0.01 times that of a result with a pH of 2. So, the answer is B.

pH is a measure of the acidity or stipulation(alkalinity) of a result. It's a logarithmic scale that measures the attention of hydrogen ions(H) in a result. The pH scale ranges from 0 to 14, where 0 is the most acidic, 7 is neutral, and 14 is the utmost introductory.

Given by the question.

According to the pH formula, pH = -log[H+], we can rearrange the equation to solve for [H+]:

[H+] = \(10^{(-ph)}\)

Substituting pH = 4 and pH = 2 into this equation, we get:

[H+] at pH 4 = \(10^{(-4)}\) = 0.0001 M

[H+] at pH 2 = \(10^{(-2)}\) = 0.01 M

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Answer:

B

Step-by-step explanation:

The pH scale is a logarithmic scale that measures the concentration of hydrogen ions (H+) in a solution. A decrease of one pH unit corresponds to a tenfold increase in the concentration of hydrogen ions.Using the pH formula pH = -log[H+], we can solve for the concentration of hydrogen ions in a solution with a pH of 4 and a pH of 2.For a solution with a pH of 4:pH = -log[H+]

4 = -log[H+]

log[H+] = -4

[H+] = 10^-4 = 0.0001 moles/literFor a solution with a pH of 2:pH = -log[H+]

2 = -log[H+]

log[H+] = -2

[H+] = 10^-2 = 0.01 moles/literSo, the [H+] concentration of a solution with a pH of 4 is 100 times less than that of a solution with a pH of 2. In other words, a solution with a pH of 2 is 100 times more acidic than a solution with a pH of 4.

Answer:

B

Step-by-step explanation:

the g is not in the root, solve everything in the root separately and then add g to it

Answer:

(28 ÷ (-4)) + 7

Step-by-step explanation:

(28 ÷ (-4)) + 7 → -7 + 7 = 0

Answer:

(28 divided by (-4)) + 7

Step-by-step explanation:

Answer:reflection image of the other

Source:trust me bro

Answer:

24

Step-by-step explanation:

The formula for area of any triangle is (length * width) * 1/2. This makes the angle of 90 degrees irrelevant.

6 x 8 = 48

48 / 2 = 24

Step-by-step explanation:

\( \frac{4 \: hours}{computer} \times \frac{1 \: slot}{ \frac{1}{3} hour } = 12 \: \frac{slots}{computer} \)

The time taken for the trip will be 12.7 hours.

It should be noted that time taken is calculated as:

Time = Distance / Speed

Distance = 700 miles

Speed = 55 mph

Time = 700/55

Time = 12.7 hours.

Therefore, the time taken for the trip will be 12.7 hours.

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The given two triangles are similar to each other by the postulate called SAS.

What is triangle ?

Triangle can be defined as in which it consists of three sides, three angles and sum of the three angles are 180 degrees always.

Given,

The triangles are RST and UVT

So

From the given figure we can say that,

RT = TU

RS = VU

As two sides are already equal and vertically opposite angles are always equal .

so we can say that By postulates SAS we can say that they are similar to each other.

Hence, The given two triangles are similar to each other by the postulate called SAS.

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The three statements that are true include the following:

A. The radius of the circle is 3 units.

B. The center of the circle lies on the x-axis.

D. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

In Mathematics, the standard form of the equation of a circle is represented by this mathematical expression;

(x - h)² + (y - k)² = r²   .......equation 1.

Where:

h and k represents the coordinates at the center of a circle.

r represents the radius of a circle.

Based on the information provided, we have the following equation of a circle:

x² + y² – 2x – 8 = 0      ......equation 2.

In order to determine the true statements, we would rewrite the equation in standard form and then factorize by using completing the square method:

x² – 2x + y² = 8 = 0

x² – 2x + (2/2)² + y² = 8 + (2/2)²

x² – 2x + 1 + y² = 8 + 1

(x – 1)² + (y - 0)² = 9         .......equation 3.

By comparing equation 1 and equation 3, we have the following:

Center (h, k) = (1, 0)

Radius (r) = 3

Additionally, this line and the center of the given circle lies on the x-axis (x-coordinate) because the y-value is equal to zero (0).

(x - 0)² + (y - 0)² = 3²

x² + y² = 9.

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Answer: $5400

Step-by-step explanation:

x =  amount raised so far

13500 - x = amt. still needed

x/3 = (13500 - x)/2

2x = 3(13500 - x)

2x = 40500 - 3x

5x = 40500

x = 40500/5 = 8100 (amt. raised so far)

13500 - 8100 = 5400 (amt. still needed)

Answer:

If all rational roots of g(x) = 0 are integers, the leading coefficient of g(x) must be 1. If all roots of g(x) = 0 are integers, the leading coefficient of g(x) must be 1.

a. The concentration would be 0.5 mg/L at approximately t = 40 hours.

b. The table representing the concentration of the drug in the bloodstream, t hours after administration is shown below.

c. A reasonable domain for this function is t ≥ 0.

d. The patient should receive the next intravenous dose of the drug in order to maintain a concentration above 1 mg/L and below 8 mg/L at t = 1.25 hour.

e. The concentration of the oral drug and the concentration of the intravenous drug would keep increasing over the first 20 hours after it is administered.

In order to determine the time when the concentration would be 0.5 mg/L, we would substitute the value of the concentration and then solve the quadratic function for time (t);

c(t) = 20t/(t² + 4)

0.5 = 20t/(t² + 4)

0.5(t² + 4) = 20t

0.5t² + 2 = 20t

0.5t² + 2 - 20t = 0

t² + 4 - 40t = 0

t² - 40t + 4 = 0

Time, t = 38.8998 ≈ 40 hours.

Part b

In this context, we would complete the table of values at various time (t) as follows;

t        0    2      4     6       8           10        12        14     16        18      20

c(t)    0    5      4      3     2.35      1.92     1.62     1.4    1.23     1.10    1.00

Part c

Since the concentration of the drug at time, t = 0 is equal to 0 mg/L and the concentration actually never becomes zero (0) for any value of time (t), we can reasonably infer and logically deduce that a reasonable domain for this quadratic function is t ≥ 0 or {0, ∞}.

Part d and e

Furthermore, the intravenous drug must be administered to the patient between the time interval 1.25 ≤ t ≤ 20 in order to maintain a concentration above 1 mg/L and below 8 mg/L.

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Answer:

The relationship is proportional. The constant of proportionality is 20. It represents how many meters the horse runs per second per second. Equation is d=20t

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Monica is wrong to say she will earn more interest in 1 year than Paul because her interest  rate is higher.

Simple interest is the interest amount for a particular principal amount of money at some rate of interest.

Therefore, Monica deposits $100 into a savings account that pays a simple interest rate of 4.5%.  Let's find the simple interest for Monica at 1 year.

I = prt / 100

where

Therefore,

I = 100 × 4.5 × 1 / 100

I = 450 / 100

I = 4.5 dollars

Paul deposits $200 into a savings account that pays a simple interest rate 2.9%. Let's find the simple interest of Paul for 1 Year.

I = 200 × 2.9 × 1 / 100

I = 580 / 100

I = 5.8 dollars

Therefore, Monica will earn lesser interest in 1 year than Paul.

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The simplified value of the expression 5/6 - 7/2 - 5/3 is -13/3

Expressions are mathematical statements that are represented by variables, coefficients and operators

The expression is given as

5/6-7/2-5/3

Convert the mixed fractions to improper fractions

So, we have

5/6 - 7/2 - 5/3

Evaluate the product of the numerators and the denominators in the above expression so that the denominators are the same

So, we have

5/6 - 7/2 - 5/3 = 5/6 - 21/6 - 10/6

Take the LCM of the denominators in the above expression

So, we have

5/6 - 7/2 - 5/3 = (5 - 21 - 10)/6

Evaluate the difference of the numerators in the above expression

So, we have

5/6 - 7/2 - 5/3 = -26/6

Simplify the above fraction

So, we have

5/6 - 7/2 - 5/3 = -13/3

Hence, the simplified value of the expression 5/6 - 7/2 - 5/3 is -13/3

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Answer:

Step-by-step explanation:

The bell boy added $270 and $20 incorrectly. The $20 bill was something that was returned due to overcharching. On the other hand, $270 was the amount that they paid for their room. This only means that $20 should be deducted from $270 and that's the amount that they paid for their room while $30 and $20 are the amount that the bell boy received as a tip

Total money of the three men: 3($100) = $300

They paid $270 for the room: $300 - $270 = $30

Tip for the bell boy: $30 - $30 = $0

Amount overcharged to them: $0 + $20 = $20

Tip to the bell boy: $20 - $20 = $0

They were left with no more money from the original $300.

Answer:

55,000

55,183 is closer to 55,000 than to 56,000

To round to the nearest thousand look at the hundreds number, if the number is below 5 then the thousands number remains the same and the digits less than the thousands become zeros, if the hundreds number is 5 or higher you add 1 to the thousands number and the digits less than the thousands become zeros.

The hundreds number is 1, so the thousands number remains 5.

Answer: 55,000

Answer:

1/12 gallons

Step-by-step explanation:

We can determine how much more hot chocolate than apple cider die Joe serve by subtracting 1/12 from 1/6.

Step 1:  Since 1/12 has the bigger denominator and 6 * 2 = 12, let's give 1/6 the same denominator as 1/12 by multiplying the entire fraction by 2/2

(1/6) * (2/2) = 2/12

Step 2:  Now we can subtract 1/12 from 2/12:

2/12 - 1/12 = 1/12

Thus, Joel served 1/12 more gallons of hot chocolate than apple cider.

In the graph the Inefficient point of production is represented by the point A  , option(a)Point A is correct .

The graph given in the question is for Skateboards vs Bikers.

we need to find the point which represents the Inefficient point of Production.

The points in the Production Possibility Curve are said to be inefficient when the resources are not utilized to the fullest.

The given Production possibility curve between the Skateboards and the Bikers have Point A as the Inefficient Point .

Therefore , the point A represents the Inefficient point of production in the given Production possibility curve , the correct option is (a)Point A.

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Answer:

The slope would be \(\frac{4}{5}\)

Step-by-step explanation:

Answer:

-4/-5

Step-by-step explanation:

Remember the formula to slope:

(y2 - y1)/(x2-x1) given two points on the line that are (x1, y1) and (x2, y2).

The two points given on this line are: (2,2) from the top left and (-3,-2) from the bottom left. Let's say (2,2) = (x1, y1) and (-3,-2) = (x2, y2). Plug the points into the formula:

(-2 - 2)/(-3-2) = -4/-5

FINAL ANSWER: -4/-5

$105 is higher than $100, the minimum Payment due on Josiah's credit card is $105.

The minimum payment due on Josiah's credit card 3% of his outstanding balance and compare it to the minimum payment of $100. The higher amount between the two will be the minimum payment.

1. Calculate 3% of $3,500:

3% * $3,500 = 0.03 * $3,500 = $105

2. Compare the calculated amount with the minimum payment of $100:

Minimum payment = max($105, $100)

Since $105 is higher than $100, the minimum payment due on Josiah's credit card is $105.

The credit card company sets a minimum payment to ensure that the cardholder makes regular payments towards their outstanding balance. The minimum payment is usually a percentage of the balance or a fixed amount, whichever is higher. In this case, the minimum payment is calculated as 3% of the outstanding balance or $100, whichever amount is greater.

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Answer:

f(-1) = 2

f(0) = 3

Step-by-step explanation:

f(a) = 3a - a²

Answer:

The 3rd and the 4th statement are not the true statements.

Step-by-step explanation:

In the 3rd statement, if you put a=-1 into the equation f(a), it would be

=3x(-1) - (-1)2

=-3 - 1

=-4.

In the 4th statement, if you put a=0 into the equation f(a), it would be

=3x(0) - (0)2

=0 - 0

=0.

For the other statements, they show the correct results.

We will get y = -7x + 6  in graph y-intercept 6 and slope-7.

The equation of the line with a y-intercept of 6 and a slope of -7 can be written in slope-intercept form as:

y = mx + b

where m is the slope and b is the y-intercept.

Substituting the given values, we get:

y = -7x + 6

So the equation of the line is y = -7x + 6.

slope -7 and y - intercept 6.

Slope intercept form: y = mx + b, m=slope, b = y-intercept

y = -7x + 6

Just plug in a value for x and solve for y

x     y=-7x+6

------------------

0           6

1          -1

If you plot these two points and draw a straight line through them,

that is the graph of the line.

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Answer:

the volume is 27 and to get a volume of a cube it will be side cubed meaningit will be side x side x side so to get the length of one side we will look for the cube root of 27 by using factor tree and the cube root will be 3

Answer:

the answer is 11, 13, 17

Step-by-step explanation:

this is because they do not have any even number that multiplies into them.

Answer:

450

Step-by-step explanation: 90x 5 = 450  hoped i helped

Answer:

m = 1/2

Step-by-step explanation: