Suppose an isosceles triangle ABC has A = 45° and b = c = 4. What is the length of a2? A.22.63
B.54.63
C.9.37
D.3.10

Answers

Answer 1

Since b = c, the angles B and C also equal

 so you get
180 - 45 = 135
135/2 = =67.5 for each angle

now we know 2 sides and all 3 angles, use the law of sines to find a

b/sin B = a/sin A

4/(sin 67.5) = a/(sin 45)

a = 4(sin 45)/(sin 67.5)

a^2 = (4(sin 45)/(sin 67.5))^2

a^2 = 9.37

 Answer is C


Related Questions

if the given square is one side of a cube the volume of the cube will be the cube of the side length of the square write and evaluate an exponential expression for the volume of the cube.

P.S. the side length of said square is 8cm

Answers

If the length of one side of the square is 8 and the volume of the cube is length^3, the volume is 8^3 (8 x 8 x 8).
According to this information, the volume of this cube is 512 cubic cm.

solve -5x-42>-2-(x+4)

Answers

-5x - 42> -2 - (x + 4)

first distribute the negative to every term in the parethesis
-5x - 42 > -2 -x -4

Simplify

-5x - 42 > -6 - x

move all x to one side and numbers to the other

-5x (+x) - 42 (+42) > -6 (+42) - x (+x)

simplify

-5x + x > -6 + 42

simplify

-4x > 36

isolate the x

-4x/-4 > 36/-4

Note: Since you are dividing by a negative number, flip the sign (ONLY applies when you are DIVIDING a NEGATIVE number)

x < 9

answer: x<9

hope this helps

BEST ANSWER GETS BRAINLIEST PLEASE HELP

Answers

11. y - y₁ = m(x - x₁)

y - 4 = ²/₃(x - 3)

y - 4 = ²/₃x - 2

y = ²/₃x + 2


12. y - y₁ = m(x - x₁)

y - 0 = ⁻¹/₅(x - 5)

y - 0 = ⁻¹/₅x + 1

y = ⁻¹/₅x + 1

Jack earns $50 for washing cars on the weekend. He makes an average of $4.25 in tips per hour. Write the function of Joe's earnings, and solve for how much he would make after 6 hours.

Answers

A function for this would be m = 50 + 4.25t. The $50 is the one time thing. We must multiply the tips by 6. 4.25 * 6 = 25.50. 50 + 25.50 is 75.50. Joe would make $75.50 after 6 hours.

Find limit as x approaches 4 of the quotient of the quantity the square root of the quantity 3 times x plus 4 minus the square root of 4 times x and the quantity x squared minus 4 times x . you must show your work or explain your work in words

Answers

lim x-4   (√3x+4 - √4x) / (x^2-4x)simplify √4x to equal 2√x
multiply by the conjugate (√3x+4 - 2√x)(√3x+4 + 2√x) / (x^2-4x) (√3x+4 + 2√x) 

 simplify = -x+4 /  (x^2-4x) (√3x+4 + 2√x) 

 factor (x^2-4x) which equals x(x-4)

-x+4 /  x(x-4) (√3x+4 + 2√x) 
  simplify= -1/ 4(√3x+4 + 2√x)
next plug in 4 
-1/ 4(√3(4)+4 +2 √(4)) = (-1/32)

20 points!
Show work please! I have no idea how to do this, haha.

Answers

[tex]\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\ a^{-{ n}} \implies \cfrac{1}{a^{ n}} \qquad \qquad \cfrac{1}{a^{ n}}\implies a^{-{ n}} \qquad \qquad a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}} \\\\ -------------------------------\\\\ [/tex]

[tex]\bf 3^{5x-9}=\left( \cfrac{1}{27} \right)^{2x-8}\qquad \boxed{27=3^3}\qquad 3^{5x-9}=\left( \cfrac{1}{3^3} \right)^{2x-8} \\\\\\ 3^{5x-9}=\left( 3^{-3} \right)^{2x-8}\implies 3^{5x-9}= 3^{-3(2x-8)} \\\\\\ 3^{5x-9}= 3^{-6x+24}\impliedby \begin{array}{llll} \textit{the bases are the same, then}\\ \textit{the exponents must be the same} \end{array} \\\\\\ 5x-9=-6x+24\implies 11x=33\implies x=\cfrac{33}{11}\implies x=3[/tex]

Find the slope of the line whose equation is 5y = x - 3.

-3
-3/5
1/5
5

Answers

Answer:

1/5

Step-by-step explanation:

5y = x - 3

To find the slope of a line, we need to get the equation in the form y= mx+b where m is the slope and b is the y intercept

5y = x - 3

Divide each side by 5

5y/5   = x/5 - 3/5

y = 1/5 x - 3/5

The slope is 1/5 and the y intercept is -3/5

Answer:

1/5

Step-by-step explanation:

A washer and a dryer cost $600 combined. the cost of the washer is three times the cost of the dryer. what is the cost of the dryer? answer

Answers

Greetings!

We can solve this by creating an algebraic equation.
[tex]3d+d=600[/tex]
[tex]d=dryer[/tex]

Solve for d.
[tex]4d=600[/tex]
Divide both sides by 4.
[tex](4d)/4=(600)/4[/tex]
The Answer Is:
[tex]d=150[/tex]

To Check:
[tex]w+150=600[/tex]
Add -150 to both sides.
[tex](w+150)+(-150)=(600)+(-150)[/tex]
[tex]w=450[/tex]
[tex]150*3=450[/tex]

The Dryer cost $150.

Hope this helps.
-Benjamin




Please Help
Simplify.
(y/4)divide(1/4)

Answers

The answer is:  "y" .
_______________________________________________________
Explanation:
_______________________________________________________

[tex] \frac{y}{4}[/tex] ÷ [tex] \frac{1}{4} [/tex] ;

 [tex] \frac{y}{4}[/tex] * [tex] \frac{4}{1} [/tex] ;

Note:  Both of the "4 's " cancel out to "1" ; since "4÷4 = 1" ; and we have:

  [tex] \frac{y}{1}[/tex] * [tex] \frac{1}{1} [/tex] ;

 =  y * 1  = y ;
__________________________________________
The answer is:  "y" .
__________________________________________

Paula is working on her English essay. She already has 150 words written and has planned out the rest. Paula's essay must be 3,000 words in length, and she types at a rate of 38 words per minute.

Which equation represents the number of words in her essay, and how many minutes, m, will it take Paula to complete it?

a) 38m - 150 = 3,000; m = 75 minutes
b) 38m - 150 = 3,000; m = 83 minutes
c) 38m + 150 = 3,000; m = 75 minutes
d) 38m + 150 = 3,000; m = 83 minutes

Answers

Final answer:

The correct equation for the given scenario is 38m + 150 = 3,000. Solving this equation, we find that it will take Paula approximately 75 minutes to finish her essay.

Explanation:

The question involves calculating how much time Paula needs to complete her essay based on her typing speed and desired essay length. Paula needs to write 3,000 words, but she already has 150 written. Therefore, she needs to write 3,000 - 150 = 2,850 more words. If she types at a rate of 38 words per minute, the number of minutes, represented as m, can be found using the equation 38m = 2,850. Therefore, the correct equation from the options is 38m + 150 = 3,000. Solving this equation for m gives m = 2,850 / 38 ≈ 75 minutes. Thus, option c) 38m + 150 = 3,000; m = 75 minutes is the correct answer.

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-13x<65 what is the solution to this inequality

Answers

x > −5 (That's negative five)

Beau has a 30-mile commute for work each day. He drives at least an additional 225 miles every month. He needs an inequality to relate his monthly mileage, y, to the number of days he commutes, x. Which answer choice correctly describes this scenario?

A His monthly mileage is greater than the difference between 30 times the number of days and 200.

B His monthly mileage is less than the difference between 30 times the number of days and 200.

C His monthly mileage is greater than or equal to the sum of 30 times the number of days and 200.

D His monthly mileage is less than or equal to the sum of 30 times the number of days and 200.

Answers

i'm going to give you a site the will help you

Which of the following is the correct action to take when simplifying the expression A. add the exponents B. subtract the exponents C. multiply the exponents D. divide the exponents

Answers

x^2 x^4 = x^(2 + 4) = x^6

Therefore, the correct action to take is to add the exponents.

Final answer:

To simplify an expression involving division of exponential terms with the same base, subtract the exponents of those terms. Numerical coefficients are divided normally while applying the subtraction rule to the exponents.

Explanation:

When simplifying the expression that involves division of exponentials, the correct action is to subtract the exponents. This rule applies when the bases of the exponential terms are the same. For example, when dividing [tex]a^m[/tex] by [tex]a^n[/tex], you would calculate a^(m-n). If we have numerical coefficients in front of the terms, we divide those normally, then apply the rule for exponents. An example is 4.5 × [tex]10^9[/tex] / [tex]10^6[/tex] = 4.5 × [tex]10^(9-6)[/tex] = 4.5 × [tex]10^3[/tex].

If Consider today’s stock listing for Enam Telecom, shown below.
52 wk High52 wk LowSymbolDiv.CloseNet Change122.8664.77ENM3.4599.144.74if the lowest price in the past year occurred 48 days ago, find the approximate average change per day since then. a. $4.74 b. $0.72 c. $0.49 d. $1.34

Answers

Answer:

Average change per day since then = $0.72

Step-by-step explanation:

Stock listing for Enam Telecom is given as

52 wk high    52 wk low   Symbol       Div.      Close      Net change

  122.866          64.77          ENM        3.45       99.14          4.74          

The lowest price $64.77 occurred 48 days ago.

Today's close for the stock was $99.14.

Now we have been asked to tell the approximate average change per day since then.

Therefore Average change per day = (closing value for today - closing value 48 days ago) ÷ (number of days)

Since closing value 48 days ago = 52 week low = $64.77

Now average change = [tex]\frac{(99.14-64.77)}{48}=0.72[/tex]

Therefore answer is $0.72 is the average change per day.

The approximate average change per day since the lowest price occurred is approximately $0.72, option B is correct.

To find the approximate average change per day since the lowest price occurred 48 days ago, we need to calculate the total change and divide it by the number of days.

The lowest price in the past year was 64.77, and the current price is 99.14.

The change in price is the difference between these two values:

Change = 99.14 - 64.77

= 34.37

Now, we divide the total change by the number of days:

Average Change per Day = Change / Number of Days

Average Change per Day = 34.37 / 48

Average Change per Day = 0.716

Hence, the approximate average change per day since the lowest price occurred is approximately $0.72.

Therefore, the correct option is b. $0.72.

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Reiko started a business selling home medical supplies. She spent $6500 to obtain her merchandise, and it costs her $550 per week for general expenses. She earned $900 per week in sales. What is the minimum number of weeks it will take for Reiko to make a profit? Write an inequality to model the problem.

Answers

900x is greater than or equal to 550x+6500. In this equation, I used x to represent the number of weeks, 900x to represent her profits, and 550x+6500 to represent her costs. Then, since 19 is the lowest integer that we can plug into the equation to keep the inequality true, it is our answer, 19 weeks.
900w>6500+550w I know trust me

A school choir has 36 members. There are three times as many underclassmen as seniors. How many seniors are in the choir?

Answers

108 if my maths is correct
So, because you have 36 people in the choir, then using Algebra you have 3x underclassmen and then x seniors, 36 would be 4x people, and so you would have 9 seniors. After a simple check, you will find that to be right

What is 10 more than 451

Answers

10 more than 451 is 441

What is 5x-y=35 in slope form

Answers

 5x-y=35
 y = 5x - 35 ....slope form

hope it helps
You have to solve in the y= mx+b
1. 5x-y=35
2. -y=35-5x
3. y= -35+5x or y=5x-35

Daniel, ryan, and sam are friends. daniel is ryan's brother. ryan is sam's brother. sam is not daniel's brother. how is this possible?

Answers

So we know that the three boys are friends – Sam, Ryan and Daniel.

We also know that Daniel is Ryan’s brother and Ryan is Sam’s brother.

But the question here is why does Sam is not Daniel’s brother.

Because the answer here is Sam is a girl which makes her a sister of Daniel, not a brother.

Which statements are correct interpretations of this graph?

Select each correct answer.

1 2/3 of a page is edited per minute

3 pages are edited every 5 min

6/10 of a page is edited per minute

5 pages are edited every 3 min

Answers

The answer is D Hope this Helps

How many ways are there of seating six people at a round table so that two specific people sit together?

Answers

Answer:

6 People in a round table can be seated in (6 - 1) ! ways = 120. Now we need to subtract the number of cases when one of those is sitting next to 2 of the other 5. We can consider as if 5 people are sitting in a row because it is round table.

Dylan scored a total of 48 points in first 4 games of the basketball season. Which equation can be used to find g, the average number of points he scores per game?

Answers

g= 48/4???? that would make sense wouldn't it? because 48/4 would be the total number of points divided by the amount of games in which those points are scored. 

Answer:

[tex]g = \frac{48}{4}[/tex]

Step-by-step explanation:

[tex]Average = \frac{\text{Sum of all observations}}{\text{No. of observations}}[/tex]

[tex]Average = \frac{\text{Total score}}{\text{Total no. of games}}[/tex]

Since we are given that Dylan scored a total of 48 points in first 4 games of the basketball season.

So,[tex]Average = \frac{48}{4}[/tex]

Let the average be g

So, [tex]g = \frac{48}{4}[/tex]

Hence The equation can be used to find g, the average number of points he scores per game is [tex]g = \frac{48}{4}[/tex]

The perimeter of the triangle below is 55 units. find the value of z.

Answers

what triangle are you talking about..?

PLZ HELP SOLVE: 6b - 1 < -7 or 2b + 1 > 5

Answers

I have both of them, I hope this was what you were looking for ^.^

The given expressions need to be solved.

[tex]b[/tex] will include all numbers less than but not equal to [tex]0[/tex].

[tex]b[/tex] will include greater than but not equal to [tex]2[/tex].

The given expression is

[tex]6b-1<-7\\\Rightarrow 6b<-7+1\\\Rightarrow 6b<-6\\\Rightarrow b<-1[/tex]

So, [tex]b[/tex] will include all numbers less than but not equal to [tex]-1[/tex].

[tex]2b+1>5\\\Rightarrow 2b>5-1\\\Rightarrow 2b>4\\\Rightarrow b>\dfrac{4}{2}\\\Rightarrow b>2[/tex]

[tex]b[/tex] will include all numbers greater than but not equal to [tex]2[/tex]

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The set of complex numbers is closed under subtraction. true or false

Answers

false it is not TRUE !!!!!

Final answer:

The set of complex numbers is indeed closed under subtraction because the subtraction of any two complex numbers always results in another complex number.

Explanation:

The set of complex numbers being closed under subtraction is indeed true. In mathematics, a set is said to be closed under a particular operation if performing that operation on members within the set always results in a member that is also within that set.

In the case of complex numbers, if we subtract one complex number from another, the result is a complex number. For example, if we have two complex numbers, (a + bi) and (c + di), and we subtract the latter from the former, the result will be a complex number (a - c) + (b - d)i.

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HELP ASAP!!!!!!!!!!!!
Which property justifies the following statement? ∠AOB ≅ ∠AOB
Transitive Property of Congruence
Reflexive Property of Congruence
Symmetric Property of Congruence
Distributive Property

Answers

Reflexive property of congruence

Reflexive Property of Congruence justifies the following statement ∠AOB ≅ ∠AOB. Option B is correct.

What are the angle?

Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.

Here,
∠AOB ≅ ∠BOB
It can be obtained, only by when the angle gets reflected.
So by the reflexive Property of Congruence justified.

Thus, the reflexive Property of Congruence justifies the following statement ∠AOB ≅ ∠AOB. Option B is correct.

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Find the sum and express it in scientific notation. 0.00348 + (6.2 x 10-2)

Answers

0.00348 + (6.2 * 10^-2) =
0.00348 + 0.062 =
0.06548 =
6.548 * 10^-2 <=
0.00348+ (6.2 x 10-2)
0.00348+(6.2 x 8)
0.00349+(49.6)
=49.60348

can someone help me with a few easy math questions?

Answers

sure what kind of questions are they??
1+1
1+2
1+3
1+4
1+5
1+6
1+7
1+8
1+9
1+10

A sequence is defined by the recursive function f(n + 1) = –10f(n).
If f(1) = 1, what is f(3)?

Answers

Answer: 100

---------------------------------
---------------------------------
Explanation:

First term
f(1) = 1
which is given to us

We will use the equation f(n+1) = -10*f(n) to generate successive terms after this first term.
---------------
Second term
f(n+1) = -10*f(n)
f(1+1) = -10*f(1) ... plug in n = 1
f(2) = -10*f(1)
f(2) = -10*1 ... replace f(1) with 1 (works because f(1) = 1)
f(2) = -10

Put another way, the second term is -10 times the first term
second term = -10*(first term)
second term = -10*(1)
second term = -10
---------------
Third term
f(n+1) = -10*f(n)
f(2+1) = -10*f(2) ... replace n with 2
f(3) = -10*f(2)
f(3) = -10*(-10) ... replace f(2) with -10 (works because f(2) = -10)
f(3) = 100 which is the answer we want

In other words, the third term is -10 times the second term
third term = -10*(second term)
third term = -10*(-10)
third term = 100
---------------
Summary of the three terms
f(1) = 1
f(2) = -10
f(3) = 100
Each term is found by multiplying the previous term by -10

Answer:

100

Step-by-step explanation:

On a 1616 scale drawing of a bike, one part is 3 inches long. How long will the actual bike part be?

Answers

18 inches  3x6/1 = 18

Hope this helps
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