Class work help Algebra 2

Answer:

RS = 5

QS = 18

TS = 10

TV = 15

Step-by-step explanation:

Given QV = 23 and QT = 8 and TR = RS = SV

now, we subtract the length of QT from the whole line, QV

23 - 8 = 15 then we divide this by 3 because TR = RS = SV so there must be 3 equal pieces

15 ÷ 3 = 5

RS = 5

QS = QT + TR + RS so

QS = 8 + 5 + 5

QS = 18

TS = TR + RS so

TS = 5 + 5 and

TV = TR + RS + SV

TV = 15

Answer:

Step-by-step explanation:

V=Bh

Subsitute area of base by putting area of right triangle 1/2*8*15.

1380=1/2*8*15*h

Solve for value of h

h=23 cm

Option B is correct.

6. The measure of each angle is  m∠ E = 46°, m∠ D = 46°.

Angle of elevation from point A to B (∠ E ) is the angle between the horizontal line from A to B.

And, Angle of depression from B to A ( ∠D ) is the angle from the horizontally downward line from B to A.

As we can see that  all the horizontal lines are in parallel to each other,

Alternative Interior Angle :  When two parallel lines are cut by a transversal , the resulting alternate interior angles are congruent.

With the help of above theorem,

Angle of elevation from point A to B = Angle of depression from point B to A,

∠E and ∠D are interior opposite angles.

Then,  m ∠ E = m ∠ D

3x + 1 = 2(x + 8)  ( Given )

3x + 1 = 2x + 16

x = 15,

So, m∠ E = 3x + 1 = 45 + 1 = 46°

Hence,  m∠D = 46°

7. The measure of each angle is m∠ E = 20°, m∠ D = 20°.

By following same method as given above we will solve this question.

So, As we know that

Angle of elevation from point A to B = Angle of depression from point B to A,

∠E and ∠D are interior opposite angles.

Then,   m ∠ E = m ∠ D

5(x - 2) = (x + 14)

5x - 10 =  x + 14

  5x -x = 14 + 10

      4x = 24

        x = 24/4 = 6

So, m∠ D = (x + 14) = 6 + 14 = 20°

Hence, m ∠ E = 20°

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Answer:

Step-by-step explanation:

your welcome <3

Answer:

9/28

Step-by-step explanation:

when you divide a fraction by fraction you need to multiply the left fraction by the opposite of right fraction so -7/9 becomes -9/7 and then you multiply -1/4 by -9/7. When you multiply negative with negative you get a positive value.

it's better to display fractions vertically like this to understand better

1

_

4

Answer:9/28

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

x+(-6)=10 Take (-6) to the other side it becomes (+6).

x= 10 + 6

x=16

The temperature at 10,000 feet altitude will be 30.2 ° F.

We are given that:

As the airplane moves 1000 feet above the ground, the temperature drops by 1.6 ° F.

Now, the temperature on the ground is given as

Temperature on ground = 46.2 ° F

Now, the plane is at the altitude of 10,00 feet.

We need to tell the temperature at that altitude.

At 1000 feet, temperature drops by = 1.6 ° F.

At 10000 feet, the temperature will drop by = 1.6 ° F. × 10,000 / 1000

= 16 ° F.

So, the temperature will be = 46.2 ° F - 16 ° F

Temperature = 30.2 ° F

Therefore, the temperature at 10,000 feet altitude will be 30.2 ° F.

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Step-by-step explanation:

Área of a circle is given as

[tex]\pi \times {r}^{2} [/tex]

Therefore you can substitute the values as follows:

[tex]3.14 \times {6}^{2} = 113.09733552923[/tex]

Answer not rounded to any decimal place and used of 3.14 as said in the instruction

The area is:

Explanation:

To find the circle's area, use the formula [tex]\sf{A=\pi r^2}[/tex].

where:

A = area;

π = 3.14 (pi);

r = radius

Diagram:

[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\qbezier(2.3,0)(2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,-2.121)(0,-2.3)\qbezier(2.3,0)(2.121,-2.121)(-0,-2.3)\put(0,0){\line(1,0){2.3}}\put(0.5,0.3){\bf\large 6\ in}\end{picture}[/tex]

Plug in the data:

[tex]\sf{A=3.14\times6^2}[/tex]

[tex]\sf{A=3.14\times36}[/tex]

[tex]\sf{A=113.04\:in^2}[/tex]

Step-by-step explanation:

(a)

the sum of all internal angles in a polygon with n sides is

(n - 2)×180.

since in a regular polygon all angles are equally large, we get for one internal angle :

(n - 2)×180/n

for our hexagon this means the internal angle is

(6 - 2)×180/6 = 4×30 = 120°

(b)

the area of the hexagon is (as the graphic so nicely suggests) the sum of the areas of all 6 inner triangles.

the area of a triangle is

baseline × height / 2

baseline = 10 cm

the height (from the tip of the triangle down to the baseline in a right angle) is half of 17.3 cm, because these 17.3 cm are the sum of the 2 heights of 2 triangles placed tip to tip.

so, height = 17.3/2 = 8.65 cm

the area of one of the triangles is therefore

10 × 8.65 / 2 = 5 × 8.65 = 43.25 cm²

the total area of the hexagon is then

6 × 43.25 = 259.5 cm²

The probability that both are red should be 0.1423.

The possibility of picking up x number of balls among n number of balls is ⁿCₓ.

jar contains 9 red marbles and 14 blue marbles. Total number of marbles are 23.

favorable cases of picking two red marbles among 9 red marbles is ⁹C₂

And the total possible cases of picking two marbles among 23 marbles is ²³C₂

Therefore, the probability of picking both red marbles are = ( no. Of favorable cases/no. Of possible cases) = ( ⁹C₂ )/( ²³C₂ ) = 36/253 = 0.1423.

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A scaled copy of polygon with the scaled factor of 2 is Scale factor is defined as

It is a growing organism that falls between (0, infinity). According to the scale factor, an original figure might be either raised or decreased.

Consider two circles that appear to be the same. The word "identical" does not guarantee that both circles are of similar size. They could have various radii. One figure would be the other figure scaled down.

The ideas of ratio and proportion are intimately related to scale considerations. A given amount is multiplied or divided in ratio and proportions to create a new quantity.

A Scaled copy involves multiplying the lengths in the original figure by scale factor.

Here scale factor = 2,

Since the scale factor > 1, so there is an enlargement.

So, the scale copy's sides are 2 times of the sides of figure A.

Take the reference of grid:

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the time taken by Rita to travel 1875 miles is 4.5 days, by unitary method.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

Given:

To find: Time taken to travel 1875 miles.

Finding:

By unitary method,

Time taken to travel 1250 miles = 3 days

Time taken to travel 1 mile = [tex]\frac{3}{1250}[/tex] days

Time taken to travel 1875 miles = [tex]\frac{3}{1250}(1875) = 4.5[/tex] days

Hence, the time taken by Rita to travel 1875 miles is 4.5 days, by unitary method.

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The coordinates of the point P that partitions the Line N, into the ratio 1:5 is; P(x, y) = (-14/6), (-9/6)

We are told that the point P partitions the Line N, into the ratio 1:5.

Now, the coordinates of N and M are;

N(-3, -2), M(1, 1)

The formula to find the coordinates that partition a line is;

P(x, y) = (bx1 + ax2)/(a + b), (by1 + ay2)/(a + b)

where the ratio is a:b. Thus;

Thus, the coordinates of point P here are calculated as;

P(x, y) = (5*-3 + 1*1)/(1 + 5), (5*-2 + 1*1)/(1 + 5)

P(x, y) = (-14/6), (-9/6)

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Answer:

The answer would be six batches of cookies.

Answer:

6 batches

Step-by-step explanation:

so 28 people including you

24 cookies per batch

5 cookies each

24 cookies in each batch, if you round that up it would be 30 and 30 x 5 = 150, so instead of rounding the amount of cookies, add 1 more to the amount you multiply 24 by

then it would be 24 x 6 = 144

now divide that by 28

144/28= 5 1/6

it would take 6 (7 if everyone gets whole numbers of cookies because It would be a fraction if not 7) batches to make sure everyone gets cookies

double check:

24 times 6 =  cookies

144/28= 5 1/6

86 and 39

Step-by-step explanation:

let A is the first letter and B is the second number

A+B=125

A-B=47

2A=172

A=86

A+B=125

86+B=125

B=125-86

B=39

Step-by-step explanation:

When you buy a company's stock, you're purchasing a small piece of that company, called a share. Investors purchase stocks in companies they think will go up in value. If that happens, the company's stock increases in value as well. The stock can then be sold for a profit.

Stocks are an investment that means you own a share in the company that issued the stock. Simply put, stocks are a way to build wealth. This is how ordinary people invest in some of the most successful companies in the world. For companies, stocks are a way to raise money to fund growth, products and other initiatives.

The time taken when the person wants to burn 250 calories will be 42.37 minutes.

From the information, the 150-pound person uses 5.9 calories per minute when walking at a speed of 4 mph.

Therefore, the time taken when the person wants to burn 250 calories will be:

= Number of calories / 5.9

= 250 / 5.9

= 42.37 minutes.

Therefore, the time taken when the person wants to burn 250 calories will be 42.37 minutes.

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Using the weighted mean, the coordinates of P are given as follows:

The weighted mean is given by the sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights.

In this problem, we have these following points:

Applying the weighted mean, the coordinates of P are given as follows:

In which xA and yA are the coordinates x and y of point A, and xB and yB are the coordinates x and y of point B.

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The number of times the bacterial cell is smaller than the amoeba cell is 1.6 * 10^-10

The given parameters are:

Bacteria cell = 4 x 10^-6 m

Amoeba cell = 2.5 x 10^4 m

The number of times (n) is calculated as

n = Amoeba cell/Bacteria cell

This gives

n = (4 x 10^-6 m)/(2.5 x 10^4 m)

This gives

n = 1.6 * 10^-10

Hence, the number of times the bacterial cell is smaller than the amoeba cell is 1.6 * 10^-10

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Answer:

B. p ≤ 154

Hope that helps :)

Step-by-step explanation:

The restaurant can hold 154 people or less than that.

The number will be 3.

Let the number be represented by x.

Therefore based on the information, the equation will be:

(x × 4) - 1 = 1

4x - 1 = 11

Collect like terms

4x = 11 + 1

4x = 12

Divide

x = 12/4

x = 3

The number is 3.

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Answer:

5902

Step-by-step explanation:

that's what it tells with my calculations

The percentage of those who were married were also obese is: 34.7% (147/424; Option B)

Now,

The percentage of number of married participants who were obese is calculated by: dividing the former (147) by the total number of married participants(424)

=> Percentage of married participants who were obese = 147/424.

Hence, The percentage of those who were married were also obese is: 34.7% (147/424; Option B)

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(COMPLETE QUESTION:

A 2009 study analyzed data from the National Longitudinal Study of Adolescent Health. Participants were followed into adulthood. Each study participant was categorized as to whether they were obese (BMI >30) or not and whether they were dating, cohabiting, or married. The table below summarizes the results.

Dating Cohabiting Married Total

Obese 81 103 147 331

Not Obese 359 326 277 962

Total 440 429 424 1293

What percentage of those who were married were obese? (Round your answer to 1 decimal place.)

A. 32.8% (424/1293)

B. 34.7% (147/424)

C. 25.6% (331/1293)

D. 44.4% (147/331))

Answer: 27 days 60 miles

Step-by-step explanation: 162/6=27

6x17=102 162-102=60

Step-by-step explanation:

no wizardry is needed, as the function is already there. we only need to use it.

(a)

find d, so that 162 - 6d = 0 (0 miles are left)

162 - 6d = 0

162 = 6d

d = 162/6 = 27

it will take them 27 days.

(b)

L(17) = 162 - 6×17 = 162 - 102 = 60 miles

after 17 days they still have to lay 60 miles.

The best definition of substitution is C. The process of replacing variables with numeric values.

It should be noted that substitution is the way that can be used to solve linear system algebraically.

Therefore, the definition of substitution is the process of replacing variables with numeric values.

In conclusion, the correct option is C.

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The sales on which Joyce earns commission is the sale beyond $20,000 which is $2,650. So the total pay for a month for Joyce in which her sales is $22,650 is $1748.75.

Joyce is paid $1,550 per month plus a commission of 7.5% on all sales of more than a $20,000 monthly quota. For the given month her sales is $22,650.

Percentage means a number or a ratio represented in the form of fractions of 100. It is represented using the percentage sign ‘%’. The abbreviations used to represent the percentage are ‘pct’ or ‘pc’. In other words, the percentage is defined as how much of one quantity is made by another quantity and it is evaluated in terms of 100.

Total pay of Joyce = Her pay per month + Commission that she gets

Commission she gets is on the sales beyond $20,000.

Here, commission is on $22,650 - $20,000 = $2,650

She gets 7.5% commission. So, her commission is 7.5% * $2,650

=> 75/1000 * $2,650 = $198.75

So, the total pay of Joyce is $1,550 + $198.75

=> $1748.75 for the month.

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Answer:

$179.01

Step-by-step explanation:

(First Step) $195 - 15% = $165.75

(Second Step) $165.75 + 8% = $179.01

Step-by-step explanation:

11. Is a real numer

12. Is integer

13. Is rational

14. Is whole number

Answer:

Step-by-step explanation:

6