You dug a hole that was 8 feet deep. After taking a short break, you dug down 3 more feet in the same hole. When finished digging, a tractor accidentally filled the hole with 4 feet of dirt. How deep is your hole now?

If we use 3.14 as pi, the areas of these circles are 415.265 square units (I recommend rounding up to 415.27 unless it says otherwise).

Step-by-step explanation:

To find the area of a circle, square the radius and multiply it by pi. To find the radius, we divide the diameter by 2 to get 11.5. Then, square 11.5 to get 132.25 and multiply by pi, or 3.14, to get 415.265, rounding up to 415.27 square units.

Answer:

two or zero positive real roots, one or zero negative real roots

Step-by-step explanation:

f(x) = 9x³ − 2x² − x + 5

There are 2 sign changes, so the number of positive real zeros is 2 or an even number less than that.  So there are two or zero positive real roots.

f(-x) = 9(-x)³ − 2(-x)² − (-x) + 5

f(-x) = -9x³ − 2x² + x + 5

There is 1 sign change, so the number of negative real zeros is 1 or an even number less than that.  So there is exactly 1 negative real root.

Your answer is correct.

Answer:

B.

Step-by-step explanation:

There are 5 total 6-packs of cola. 1 is cherry and the other is vanilla. 2 out of 5 are the flavors. This means you have a 2 in 5 chance of getting a cherry or vanilla cola.

Final answer:

The probability of randomly choosing a cherry cola or vanilla cola from all the cans available is 2/5, since there are 12 such cans out of a total of 30 cans.

Explanation:

To find the probability that a can of cola chosen at random will be either cherry cola or vanilla cola, we first need to count the total number of cans and then count the number of cherry and vanilla cola cans.

There are 2 six-packs of regular cola, which amounts to 12 cans. There is 1 six-pack each of diet cola, cherry cola, and vanilla cola, which adds up to 6 + 6 + 6 = 18 cans. In total, there are 12 + 18 = 30 cans of cola.

Out of these, there are 6 cans of cherry cola and 6 cans of vanilla cola, totalling 12 cans. Thus, the probability of choosing a cherry or vanilla cola is the number of cherry and vanilla cans divided by the total number of cans, which is 12/30.

When we simplify 12/30, we get 2/5. Therefore, the correct answer is B. 2/5.

1. 10 in. to millimeters: 254.00 mm

2. 60 ft. to meters: 18.29 m

3. 4.5 in. to millimeters: 114.30 mm

4. 12 U.S. quarts to liters: 11.36 L

5. 25 feet per second to meters per second: 7.62 m/s

6. 100 miles to kilometers: 160.93 km

To convert inches to millimeters, we use the conversion factor 1 inch = 25.4 millimeters. Therefore, for 10 inches, the calculation is: [tex]\(10 \, in. \times 25.4 \, \frac{mm}{in.} = 254.00 \, mm.\)[/tex]

For the conversion from feet to meters, the conversion factor is 1 foot = 0.3048 meters. Thus, for 60 feet, the calculation is: [tex]\(60 \, ft. \times 0.3048 \, \frac{m}{ft.} = 18.29 \, m.\)[/tex]

Converting inches to millimeters again, using the same conversion factor, we get [tex]\(4.5 \, in. \times 25.4 \, \frac{mm}{in.} = 114.30 \, mm.\)[/tex]

Moving on to quarts to liters, 1 U.S. quart is approximately 0.94635 liters. For 12 quarts, the conversion is [tex]\(12 \, qts \times 0.94635 \, \frac{L}{qt} = 11.36 \, L.\)[/tex]

For the speed conversion from feet per second to meters per second, we use the conversion factor 1 ft/s = 0.3048 m/s. Thus,[tex]\(25 \, ft/s \times 0.3048 \, \frac{m}{ft} = 7.62 \, m/s.\)[/tex]

Finally, for miles to kilometers, the conversion factor is 1 mile = 1.60934 kilometers. Hence, [tex]\(100 \, miles \times 1.60934 \, \frac{km}{mile} = 160.93 \, km.\)[/tex]

Answer:1. 10 in. to millimeters: 254.00 mm2. 60 ft. to meters: 18.29 m3. 4.5 in. to millimeters: 114.30 mm4. 12 U.S. quarts to liters: 11.36 L5. 25 feet per second to meters per second: 7.62 m/s6. 100 miles to kilometers: 160.93 km

Step-by-step explanation:

Answer:

A. 3

Step-by-step explanation:

see attached for the tableau

___

As you know, the number on the bottom row is multiplied by the divisor to get the next middle-row number to the right. Top and middle rows are added to get the bottom row.

Explanation:

Divide the frequency numbers by their total to get the relative frequency. Plot that on your graph.

P(0 heads) = 4/80 = 0.05

P(1 head) = 8/80 = 0.10

P(2 heads) = 36/80 = 0.45

P(3 heads) = 20/80 = 0.25

P(4 heads) = 12/80 = 0.15

[tex]\Delta=5^2-4\cdot1\cdot7=25-28=-3[/tex]

[tex]\Delta<0[/tex] so 0 solutions.

Answer:

No Real roots to this Quadratic Equation

Step-by-step explanation:

Our Quadratic equation is given as

[tex]x^2+5x+7=0[/tex]

In order to find that do we have the real roots of a quadratic equation , the Discriminant must be greater or equal to 0. The Discriminant is denoted by D and given by the formula

[tex]D= b^2-4ac[/tex]

Where b is the coefficient of the middle term containing x, a is the coefficient of the term containing [tex]x^{2}[/tex] and the c is the constant term.

Hence we have

a = 1 , b = 5 and c = 7

Calculate D

[tex]D=b^2-4ac\\D=5^2-4*1*7\\D=25-28\\D=-3[/tex]

Hence we see that the Discriminant (D) is less than 0, our answer is no real roots to this quadratic equation.

Answer:

yall still in schoo

Step-by-step explanation:

Answer:

  square feet

Step-by-step explanation:

Units multiply the same way any variable does:

  (x ft)(y ft) = x·y ft·ft = x·y ft² . . . . . . the units of the product are square feet

Answer:

Square feet

Step-by-step explanation:

The area of the object will be measured in square feet.

Hope this helps!

Answer:

AC = 18.1 cm

Step-by-step explanation:

Construct a line from point B perpendicular to the line AD and mark it as E on line AD. Now you have a right triangle ABE with AB = 16 cm and AE = AD - BC

so AE = 11 cm - 4 cm = 7 cm

You can find BE by using Pythagorean theorem

BE^2 = AB^2 - AE^2

BE^2 = 16^2 - 7^2

BE^2 = 256 - 49

BE^2 = 207

BE = 14.4 cm

Draw a line from A to C, you have a right triangle ACD with AD = 11cm and CD = BE = 14.4 cm

Using Pythagorean theorem

AC^2 = AD^2 + CD^2

AC^2 = 11^2 + 207

AC^2  = 121 + 207

AC^2 =  328

AC = 18.1 cm

Answer:

  (1000, 179°)

Step-by-step explanation:

In rectangular coordinates, where east is the +x direction and north is the +y direction, the woman's final position is (1000 yards west, 20 yards north) or (-1000, 20).

This is translated to polar coordinates (r, θ) using ...

  r = √(x² +y²)

  θ = arctan(y/x) . . . . with attention to quadrant

The magnitude of the distance (r) is ...

  r = √((-1000)² +20²) = √1000400 ≈ 1000.2 ≈ 1000

  θ = arctan(20/-1000) in quadrant 2, so is 180° -1.15° = 178.85° ≈ 179°

In polar coordinates, the final position is (1000, 179°).

Answer:

  4

Step-by-step explanation:

The problem statement tells you the constant of proportionality is y/x. The graph shows y=4 for x=1. Then y/x = 4/1 = 4.

The constant of proportionality is 4.

_____

Caveat

Before you copy this answer, be certain the graph in your problem statement is identical to this graph. If your marked point has different coordinates than (1, 4), your constant of proportionality may be different. It will still be computed as y/x, but you need to use the x and y values of the marked point on your graph (or those of any other point whose coordinates you can read).

Answer:

1 time

Step-by-step explanation:

A line is on straight thing that keeps going straight for ever so there for it can only cross the x axis once

Answer:

  see below

Step-by-step explanation:

The answer is a list of arcs. That means you can ignore the answer choices that are lists of angles or line segments.

The only requirement is that the end points of the arc lie on the circle. Points M, N, P, Q, R are all on the circle, and all are at the end of line segments that intercept them. Any combination of these letters will define an intercepted arc.

Answer:

A

Step-by-step explanation:

[tex]\frac{1}{5} (7-3b) > 2[/tex]

[tex]=> 7-3b > 10\\=> 7-10 > 3b\\=> -3 > 3b\\=> -1 > b[/tex]

Answer:

(9,11)

Step-by-step explanation:

The given points are H(8,13) and K(10,9).

By using mid point formula,

(x, y) =(x1+x2, y1+y2)

2 2

= (8+10)2/, (13+9)/2

= 18/2, 22/2

= (9,11)

Answer:

232 ft above sea level

Step-by-step explanation:

He started at -49 ft and then he was later 281 ft higher than that... so just do -49+281 or 281-49= 232

Reymonte started his hike 49 feet below sea level, or at an elevation of -49 feet. He then hiked up 281 feet. By adding these two numbers together, we find that Reymonte ended his hike at an elevation of 232 feet above sea level.

The subject of this question is Mathematics, and it's specifically related to the topic of integers. In the context of this question, elevation is used to indicate height relative to sea level, with negative indicating below sea level and positive above. Reymonte started at an elevation of -49 feet, or 49 feet below sea level. He then hiked up 281 feet.

To find his final elevation relative to sea level, we add the increase in elevation to his initial elevation. So, we add 281 feet to -49 feet:

-49 feet + 281 feet = 232 feet

So at the end of the hike, Reymonte was at an elevation of 232 feet above sea level.

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Answer:

Step-by-step explanation:

hypotenuse

For this case we must find the quotient of the following expression:

[tex]\frac {\frac {x} {x-1}} {\frac {1} {x + 1}}[/tex]

Applying double C we have the following expression:

[tex]\frac {x (x + 1)} {x-1} =[/tex]

Applying distributive property to the terms within the parentheses of the numerator we have:

[tex]\frac {x ^ 2 + x} {x-1}[/tex]

Thus, the quotient is given by option A

Answer:

Option A

Answer:

The answer is option A. (x^2 + x)/(x-1)

Step-by-step explanation:

To solve this problem, we must first understand how to divide fractions.  When dividing fractions, the first fraction is unchanged and is multiplied by the reciprocal of the second fraction.  If we apply this knowledge to this problem, we get:

x/x-1 * x+1/1

When we multiply fractions, we simply multiply both of the numerators together and both of the denominators together to create a single fraction.

In this case we get:

x(x+1)/x-1

When we simplify this single fraction by using the distributive property, we get the following:

(x^2 + x)/(x-1)

Therefore, your answer is option A.

Hope this helps!

Answer:

I think it is (5, -2)

I hope it helps.

Step-by-step explanation:

Explanation:

The purpose of trigonometry and the trigonometric ratios sine, cosine, and tangent is to help you calculate angles based on the ratios of side lengths of triangles they are found in.

Answer: [tex]a_n=-50+(n-1)17[/tex]

Step-by-step explanation:

The Arithmetic Sequence Formula is:

[tex]a_n=a_1+(n-1)d[/tex]

Where:

[tex]a_n[/tex] is the [tex]n^{th}[/tex] term of the sequence.

[tex]a_1[/tex] is the first term of the sequence.

[tex]n[/tex] is the term position.

[tex]d[/tex] is the common difference of any pair of consecutive numbers.

We can observe that the first term is:

[tex]a_1=-50[/tex]

Now, we need to find "d". This is:

[tex]d=-16-(-33)\\d=-16+33\\d=17[/tex]

Then, substituting, we get the following equation:

[tex]a_n=-50+(n-1)17[/tex]

Answer:

Option A (x > 50 and x < 150; Ryan needs to consume more than 50 grams of carbohydrates, but less than 150 grams of carbohydrates).

Step-by-step explanation:

There are two inequalities. One is 110 < 2x + 10 and 2x + 10 < 310. x is the amount of carbs consumed in grams, the first inequality is the lower limit, and the second inequality is the upper limit. The question requires to solve the two inequalities.

1)

110 < 2x + 10.

100 < 2x.

50 < x (or x > 50).

2)

2x + 10 < 310.

2x < 300.

x < 150.

Now combining the two inequality gives:

50 < x < 150.

So Ryan needs to consume more than 50 grams of carbohydrates, but less than 150 grams of carbohydrates. Therefore, Option A is the correct answer!!!

Answer:

a

Step-by-step explanation:

Answer:

4/9

Step-by-step explanation:

Answer:

C)

Explanation:

Movement along a vector is compared by adding, subtracting, multiplying, or dividing the values respectively.

You need to find the least common multiple of 24 and 20.

[tex]24=2^3\cdot3\\20=2^2\cdot5\\\\\text{lcm}(20,24)=2^3\cdot 3\cdot 5=120[/tex]

120 min = 2 h

9:00 + 2:00=11:00

So, the answer is at 11:00

Final answer:

To find the next time both the Manchester and Birmingham buses leave London Victoria bus station at the same time, calculate the Least Common Multiple (LCM) of their departure intervals, which is 120 minutes. The buses will next leave together 2 hours after their 09:00 departure, at 11:00.

Explanation:

The question involves finding a common multiple of the times buses to Manchester and Birmingham leave the station. Since Manchester buses leave every 24 minutes and Birmingham buses leave every 20 minutes, we need to calculate the Least Common Multiple (LCM) of 24 and 20. To find the LCM of 24 and 20, we can list the multiples of each number until we find the smallest multiple they have in common.

The smallest common multiple is 120 minutes, which is 2 hours. Since both buses leave at 09:00, the next time both buses will leave at the same time will be 2 hours later, at 11:00.

Arc PR measures 90 degrees because it is a minor arc that intercepts central angle PQR, which measures 90 degrees.

The measure of arc PR is 90 degrees. This can be determined from the given diagram, which shows a circle with arc PR labeled. We also know that central angle PQR measures 90 degrees.

Minor arcs are arcs that intercept central angles less than 180 degrees. Major arcs are arcs that intercept central angles greater than or equal to 180 degrees.

Since arc PR intercepts central angle PQR, which measures 90 degrees, arc PR must be a minor arc. Minor arcs have the same measure as their central angles, so arc PR must also measure 90 degrees.

Here is an alternative way to think about it:

The entire circle can be divided into 360 degrees.

Arc PR is a portion of the circle, so it must have some measure.

Central angle PQR also divides the circle into two portions.

Since arc PR intercepts central angle PQR, it must have the same measure as central angle PQR, which is 90 degrees.

Therefore, the measure of arc PR is 90 degrees.

For more such information on: Arc

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Answer:

Step-by-step explanation:

Let f and s represent the amounts invested in the fund and in stocks, respectively. The problem statement gives rise to two equations:

  f + s = 15000 . . . . . . . Susan invested a total of 15000

  0.11f + (-0.05)s = 850 . . . . . her total return was 850

These can be solved by any of a variety of methods. Using elimination, we can multiply the second equation by 20 and add it to the first:

  20(0.11f -0.05s) +(f + s) = 20(850) +15000

  3.2f = 32000 . . . . . . . . . simplify

  f = 10000

  s = 15000 -f = 5000

Susan invested $10,000 in the fund and $5,000 in stock.