I need help with this question, it is for geometry ​

Answer:

1.

x=5

y=4

2.

y=19.8

x=4.2

3.

x=16

y=70.4

4.

a=28

b=25/7

Answer: #3: x=11

#4: x=2

Step-by-step explanation:

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so.

[tex]\stackrel{f(x)}{y}~~ = ~~\cfrac{4x}{x-9}\implies \stackrel{\textit{quick switcheroo}}{x~~ = ~~\cfrac{4y}{y-9}}\implies xy-9x=4y\implies -9x=4y-xy \\\\\\ -9x=y(4-x)\implies \cfrac{-9x}{4-x}=y\implies \cfrac{9x}{x-4}=\stackrel{f^{-1}(x)}{y}[/tex]

how to test algebraically? well, for any (a,b) pair in f(x), its inverse will have another pair but (b,a), hmmm let's plug hmmm say

f(10) = 40, and f⁻¹(40) = 10.

we could plug more values in each, same pair will come up.

as far as testing them graphically, Check the picture below.

Answer:

Formula for circumference;

C = 2πr

replace those values

C = 2 x 3.14 x 9

C = 56.52 inches, C

Answer:

The circumference would be 56.52

Step-by-step explanation:

Place your radius into the formula for circumference (C=2πr)

C = 2 × 3.14 × 9

C = 56.52

many days until 1000 people are infected is 105

Answer:(-1,-8)

Step-by-step explanation:

Answer:

(-1, -8)

step-by-step explanation:

if reflected over x-axis, use the formula: (x, y) → (x, -y)

if translated vertically, there will be change in y axis:

Answer:

405.6

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Answer:

Step-by-step explanation:

let the number of tickets be x

and the number is the same for both tickets

for the first event

the cost is =24.95x+ 5

for the second event

the cost is =35.75x+ 9.95

for both events the total cost is

T=24.95x+ 5+35.75x+ 9.95

T=24.95x+35.75x+5+ 9.95

Answer:

50 km/h

Step-by-step explanation:

Avg. speed = distance / time

= 200 km / 4 hours

= 50 km/h

Answer:

B. SSA

Step-by-step explanation:

Because we have 2 sides with a non-included (not in-between the two sides) angle, the triangles are similar by SSA Similarity.

I hope this helps!

Answer:

$14

Step-by-step explanation:

28/2 = 14

Answer:

Step-by-step explanation:

Will it collect 80 half-liter bottles in a 50-liter barrel

True False

80 half-liter = 40 liters

50 - 40 = 10 liters

the answer is TRUE

Answer: 58 degrees

Step-by-step explanation:

We can see that this triangle is an isosceles triangle so that means the two bottoms angles will be equal

Point S must be equal to point U

z = 58 degrees

Check if this is true:

Angle sum of a triangle: 180 degrees

58 + 58 = 116

180 - 116 = 64

Point T is 64

58 + 58 + 64 = 180

Answer:

$25.20

Step-by-step explanation:

18.00 + 40% = 25.20

Answer:  B) Angle Y

Step-by-step explanation:

If we rotate the triangle PQR we will get R is correspond to X, Q is correspond to Y, and P is correspond with Z.

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

let the required number be ' x '

Now, let's form a equation as per the question ~

[tex]\qquad \sf  \dashrightarrow \: - \bigg(\dfrac{ 7}{3} \times 2 \bigg ) + x = \dfrac{3}{7} [/tex]

[tex]\qquad \sf  \dashrightarrow \: - \dfrac{ 14}{3} + x = \dfrac{3}{7} [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = \dfrac{3}{7} + \dfrac{14}{3} [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = \dfrac{9 + 98}{21} [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = \dfrac{107}{21} [/tex]

Answer:

B both are proportional

Step-by-step explanation:

so i think by proportional its linear?

so the graph is linear because its a line and its a function, but for the table we first have to find the slope by using the equation

y2 - y1 / x2 - x1

(4, 1.31) and (8, 2.62) will be the points we will use

2.62 - 1.31 / 8 - 4

1.31/4

0.3275x

now i think we use a point we did not use yet sooo (16, 5.24)

we substitute

y = 0.3275x + b

5.24 = 0.3275(16) + b

5.24 = 5.24 + b

b = 0

so the equation would be

y = 0.3275x

now we check with the last point given

6.55 = 0.3275(20) ?

6.55 = 6.55

so i think the answer is both are proportional ?

Answer:

x>1

Step-by-step explanation:

21-7x>14

-7x>-7

x>1

Answer:

x<1

Step-by-step explanation:

7(3-x)>14

21-7x>14

-7x>-7

x<1

Answer:

hahsgdhfidnrhfibfrujdbfufnrie

Step-by-step explanation:

thanks

Answer:

Patrick's statement is incorrect

Step-by-step explanation:

Crackers come in packages of 24

cheese slices come in packages of 18

He wants one cheese slice for each cracker

Patrick made the statement below "if Andy doesn't want any crackers or cheese slices left over he needs to buy at least 432 of each"

Patrick's statement is incorrect

The lowest common multiple ( L. C. M) of 24 and 18 is 72

Therefore, Andy needs 72 packages of crackers and 72 packages of cheese slice so that no crackers or cheese slice will remain.

Answer: 75%

Step-by-step explanation:

20+20+25+3+2+5=75

Total of 100 students

75/100=0.75

=75%

 The percentage of P(sports ∪ work) is equal to  75%.

We have given the table

we have to find the percentage of sports and work

Total=Work+sports

Therefore we have to add the values of work and sports

20+20+25+3+2+5=75

Total of 100 students

75/100=0.75

=75%

Therefore the percentage of P(sports ∪ work) is given by 75%.

To learn more about the percentage visit:

https://brainly.com/question/24304697

#SPJ2

Step-by-step explanation:

For a, you have the theorem right above.

If B is 120 then D should be 180-120=60

Since C is 90, E should be 180-90=90

Use the same theorem for b as well

Answer: see below

Step-by-step explanation:

Hypothesis (p): A triangle is equilateral

Conclusion (q): The side lengths are equal

Conditional (p → q): If a triangle is equilateral, then its side lengths are equal.

The conditional statement is TRUE

Converse (q → p): If the side lengths of a triangle are equal, then it is equilateral.

The converse statement is TRUE

Since p → q   and  q → p are both TRUE, then it is biconditional.

Answer:

$8.88

Step-by-step explanation:

5.50+5.50+3.75+3.00=17.75÷2=8.88

Answer:

Its A.

Step-by-step explanation:

Add the price up to find the total: 5.50 + 3.75 + 3 = $12.25. Since there were 2 people and they wanted to split the cost- they pay half half. So 12.25 divided by 2 is $6.12.5 but you gotta round it to get an answer hats there so you round it up to 6.13.

Answer:

Step-by-step explanation:

Given the equation for the object's height s at time t seconds after launch is

s(t) = -4.9t^2 + 18.4t + 36.8

Since are not asked what to look for, we can as well lok for the time taken for the ball to hot the ground. The ball hits the ground at when s(t) = 0. The equaton becomes:

0 = -4.9t^2 + 18.4t + 36.8

Multiply through by -10

49t^2 - 184t - 368 = 0

factorize the resulting expression

t = 18±√184²-4(49)(-386)/2(49)

t =  18±√338564+75656/78

t =  18±√414220/78

t =  18±643.599/78

t =  661.559/78

t = 8.48secs

Hence the object reaches that ground after 8.48seconds

Answer: Total jam = 100kg

                 jams taken out on 2 occasions= 15  2/5kg    and  12  4/5 kg

                                                                       = 77/5  and  64/5

                    quantity of jam left in the container

                      = 100- (77/5 + 64/5)

                      =100- 141/5

                       = 100- 28.2

                       = 71.8 kg

Hope it helped u,

pls put thanks as well pls mark this as the brainliest

Using proportions, it is found that a tree that casts a shadow 4 ft long is 180 in. tall.

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, a fire hydrant that is 30 in. tall and casts a shadow 8 in. long. We want to find the height of a tree that casts a shadow of 4 ft = 4 x 12 = 48 inches. Hence, the rule of three is given by:

30 in - 8 in

h in - 48 in

Applying cross multiplication:

h = 48 x 30/8

h = 6 x 30.

h = 180 in.

More can be learned about proportions at https://brainly.com/question/24372153

Answer:

should be (-4,4) and (-4,-4)

Answer:

(-4,4) and (-4,-4) because a function can only have one y value for any x value.