Mr.gleasons math class lasts 40 minutes . Math class starts at 9:55 a.m. At what time does math class end

Final answer:

The cross-sectional area of a cylinder is found using the formula πr², and the external surface area is calculated by adding twice the area of the ends (2πr²) with the area of the side (2πrh). For volume, use V = πr²h. It's important to use consistent units throughout the calculations.

Explanation:

Finding the Area of a Cylinder

To find the cross-sectional area of a cylinder, you need to calculate the area of the circular base. The formula for the area of a circle is πr², where π is approximately 3.142 and r is the radius of the cylinder. To find the external surface area of a cylinder, you need to calculate the area of both circular ends and the rectangular side that wraps around the cylinder. The formula for that is 2πr² for the ends, plus 2πrh for the side, where h is the height of the cylinder.

If you want to find the volume of the cylinder, use the formula V = πr²h. This formula tells us that the volume is the area of the base times the height of the cylinder. This exemplifies the idea that understanding geometry can help calculate different geometric quantities such as cross-sectional area, the area of different parts, and volume effectively.

Remember to use consistent units in all calculations to ensure the correct solutions. For instance, if you're working in the metric system, keep all measurements in meters or centimeters.

To find the average speed for the whole race, you just have to add the speed from a starting marker and the speed from the turnaround marker going back and divide it by 2 since there are only two speeds involved.

10 m/s + 16m/s = 26 m/s / 2 = 13 m/s

Therefore, the average speed for the whole race is 13 m/s.

To calculate Beth's age, we use the equation 29 = 6B + 5, where 29 is Emma's age, B represents Beth's age, and then solve for B, resulting in Beth being 4 years old.

To find Beth's age, we need to set up an equation based on the information provided. We know that Emma is 29 years old and that she is 5 years older than 6 times Beth's age. This relationship can be described with the equation E = 6B + 5, where E is Emma's age and B is Beth's age.

Plugging Emma's age into the equation, we get 29 = 6B + 5.

Next, we solve for B by first subtracting 5 from both sides of the equation, which gives us 24 = 6B. Then, we divide both sides by 6 to find Beth's age: B = 24 / 6.

Finding the value of B tells us that Beth is 4 years old.

Therefore, the equation is 29 = 6B + 5.

Answer:

ANSWERS LOL

Step-by-step explanation:

SS Geometry B: Unit 3: Similarity

1. A

2. B

3. A

4. B

5. C

6. A

7. A

8. C

9. C

10. B

11. C

12. ESSAY

13. ESSAY

Answer:

C - All isosceles triangles are not similar. The pair of congruent angles within one triangle is not necessarily congruent to the pair of congruent angles within the other triangle.

Step-by-step explanation:

got it correct on edge

The answer is 100% 82 [tex]7/8[/tex]. I have taken the test it was correct!

Final answer:

After increasing and then decreasing a number by 10%, the final result is less than the original number because the decrease is calculated from a higher number, resulting in a net decrease.

Explanation:

When a number, let's call it xx, increases by 10%, this can be represented as xx plus 10% of xx, which is xx + 0.10xx or 1.10xx. Then, if this new number decreases by 10%, we need to take 10% off this new value, so we calculate 10% of 1.10xx which is 0.10 × 1.10xx. The resulting value is 1.10xx - 0.11xx, which simplifies to 0.99xx.

Thus, after an increase and a subsequent decrease of 10%, the final value is less than the original since 0.99xx is 99% of the original value xx.

Answer:

Hes wrong trust me its C or three more than the quotient of nine and a number cubed, decreased by two; 3 +  9 Over n cubed minus 2 I trusted him and got it wrong

Step-by-step explanation:

Answer:

B. 12%  

Step-by-step explanation:

We have been given that Ella knows that there is a 60% chance that she will have math homework tonight and a 70% chance that she will have English homework.

Since we know that probability of not happening an event can be found by subtracting probability of happening the event from 1.

[tex]\text{P(No math homework tonight)}=1-0.6=0.4[/tex]

[tex]\text{P(No English homework tonight)}=1-0.7=0.3[/tex]

Since both events are independent so we will multiply probability of no math homework tonight by probability of no English homework to find no math or English homework tonight.

[tex]\text{P(No math or English homework tonight)}=0.4\times 0.3[/tex]

[tex]\text{P(No math or English homework tonight)}=0.12[/tex]

Converting 0.12 to percent we will get,

[tex]0.12\times 100=12\%[/tex]

Therefore, the probability that Ella will not have math or English homework tonight is 12%.

Answer:

Let your monthly income = $ x

As, Mortgage payment does not exceed 28% of the total monthly income.

Monthly mortgage payment = $1,125.98

So, 28% of x=1125.98

[tex]=\frac{28x}{100}=1125.98\\\\x=\frac{112598}{28}\\\\ x=4021.3571[/tex]

So, Your monthly income should be $ 4021.36 (approx) to stay within acceptable housing expense limits.

The z-score at the cumulative area of 0.4661 is -0.085

The cumulative area is given as:

0.4661

This means that:

P = 0.4661

Next, we use a standard normal table to find the​ z-score.

From the standard normal table of z-scores, we have:

z = -0.085 when P = 0.4661

Hence, the z-score at the cumulative area of 0.4661 is -0.085

Read more about z-scores at:

brainly.com/question/25638875

#SPJ6

Answer:  The correct options are

(B) [tex]\dfrac{9^x.3^x}{9^x}[/tex]

(C) [tex] 3^x[/tex]

(E) [tex]\left(\dfrac{27}{9}\right)^3.[/tex]

Step-by-step explanation:  The given expression is

[tex]E=\dfrac{27^x}{9^x}.[/tex]

We are to select the correct expressions that are equivalent to the expression "E".

We will be using the following properties of exponents:

[tex](i)~a^x.b^x=(ab)^x,\\\\(ii)~\dfrac{a^x}{b^x}=\left(\dfrac{a}{b}\right)^x.[/tex]

We have

[tex]E\\\\\\=\dfrac{27^x}{9^x}\\\\\\=\dfrac{(9\times 3)^x}{9^x}\\\\\\=\dfrac{9^x.3^x}{9^x}\\\\\\=3^x.[/tex]

Also,

[tex]E=\dfrac{27^x}{9^x}=\left(\dfrac{27}{9}\right)^x.[/tex]

Thus, (B), (C) and (E) are the correct options.

In mathematics, the logarithm is the inverse operation to exponentiation, just as division is the inverse of multiplication. That means the logarithm of a number is the exponent to which another fixed number, the base, must be raised to produce that number. In the most simple case the logarithm counts repeated multiplication of the same factor; e.g., since 1000 = 10 × 10 × 10 = 103, the "logarithm to base 10" of 1000 is 3. More generally, exponentiation allows any positive real number to be raised to any real power, always producing a positive result, so the logarithm can be calculated for any two positive real numbers b and x where b is not equal to 1. The logarithm of x to base b, denoted logb (x) (or logb x when no confusion is possible), is the unique real number y such that by = x. For example, log2 64 = 6, as 64 = 26.

The logarithm to base 10 (that is b = 10) is called the common logarithm and has many applications in science and engineering. The natural logarithm has the number e (≈ 2.718) as its base; its use is widespread in mathematics and physics, because of its simpler derivative. The binary logarithm uses base 2 (that is b = 2) and is commonly used in computer science.

Logarithms were introduced by John Napier in the early 17th century as a means to simplify calculations. They were rapidly adopted by navigators, scientists, engineers, and others to perform computations more easily, using slide rules and logarithm tables. Tedious multi-digit multiplication steps can be replaced by table look-ups and simpler addition because of the fact—important in its own right—that the logarithm of a product is the sum of the logarithms of the factors:

provided that b, x and y are all positive and b ≠ 1. The present-day notion of logarithms comes from Leonhard Euler, who connected them to the exponential function in the 18th century.

Logarithmic scales reduce wide-ranging quantities to tiny scopes. For example, the decibel (dB) is a unit used to express log-ratios, mostly for signal power and amplitude (of which sound pressure is a common example). In chemistry, pH is a logarithmic measure for the acidity of an aqueous solution. Logarithms are commonplace in scientific formulae, and in measurements of the complexity of algorithms and of geometric objects called fractals. They help describing frequencyratios of musical intervals, appear in formulas counting prime numbers or approximating factorials, inform some models in psychophysics, and can aid in forensic accounting.

In the same way as the logarithm reverses exponentiation, the complex logarithm is the inverse function of the exponential function applied to complex numbers. The discrete logarithm is another variant; it has uses in public-key cryptography.

Final answer:

The logarithm of a number is the exponent to which a base must be raised to get that number. Common logarithms use base 10, while natural logarithms use the constant e as the base. An example of a logarithm is log10(1000) = 3, whereas a non-example is the logarithm of a negative number, which is undefined in real numbers.

Explanation:

Definition of Logarithm

The logarithm of a number is the power to which a given base must be raised to obtain that number. In the case of common logarithms, the base is 10. As an example, the common logarithm of 100 is 2, because 10 raised to the power of 2 is 100.

Facts about Logarithms

Example of a Logarithm

An example is the logarithm of the number 1000 in base 10, which is 3, because 10 to the power of 3 equals 1000.

Non-example of a Logarithm

A non-example would be stating that the logarithm of a negative number in the common logarithm system, as logarithms of negative numbers are undefined in real numbers.