Need help with this problemm

Answers

Answer 1

Answer:

Step-by-step explanation:

It is because all angles in an equilateral triangle add up to 180 degrees meaning that they are all equal. You can know its an equilateral triangle from the small lines an the sides meaning they are equal.

Related Questions

A chemist has three different acid solutions,
The first solution contains 20 % acid, the second contains 35 % acid, and the third contains 55%
acid.
She created 108 liters of a 40 % acid mixture, using all three solutions. The number of liters of
55 % solution used is 3 times the number of liters of 35 % solution used.
How many liters of each solution was used?
The chemist used
liters of 20% solution,
liters of 35 % solution, and
liters of 55 % solution.
Question Help: Message
instructor
Calculator

Answers

9514 1404 393

Answer:

36 liters of 20%18 liters of 35%54 liters of 55%

Step-by-step explanation:

Let a, b, c represent the quantities of 20%, 35%, and 55% solutions, respectively. Then for the given mix, we have ...

a + b + c = 108 . . . . . total number of liters

.20a +.35b +.55c = 0.40·108 . . . . . liters of acid

0a - 3b + c = 0 . . . . . 55% solution was 3 times 35% solution

Solving these three equations by your favorite method gives ...

(a, b, c) = (36, 18, 54)

The chemist used 36 liters of 20%, 18 liters of 35%, and 54 liters of 55%.

_____

Comment on alternate approach

Since the ratio of 55% to 35% is 3 : 1, that mix will have an acid content of ...

(3(.55) +1(.35))/4 = 0.50 = 50%

So, the final mix is equivalent to some quantity of 50% mix being added to some quantity of 20% mix. The fraction that is 50% mix* will be (40-20)/(50-20) = 2/3 of the total, or (2/3)(108 L) = 72 L.

Now we know that (1/3)(108 L) = 36 L of 20% solution is needed and (1/4)(72 L) = 18 L of 35% solution is needed. 3 times that is 54 L of 55% solution.

* After you work a few mixture problems, you can see the pattern. If we start with an equation for x = fraction of 50% to use with 20% to make 40%, we get ...

x(50%) +(1 -x)(20%) = 40%

x(50% -20%) = 40% -20% . . . . . subtract 1(20%) and factor out x

x = (40% -20%)/(50% -20%)

The key here is to see where the numbers 20%, 40%, and 50% show up in the fraction.

PLEEEEEEEEEEEEASE HELP ME WITH THIS! IT IS DUE TOMORROW!!!

Answers

Answer: They both equal 30

Solving Steps:
1. Solve for x
40-4x=50-8x
-4x+8x=50-40
4x=10
x=2.5

2. Find <1 and <2
40-4(2.5)
40-10
=30

I need help a-sap! Please and thank you!!

Answers

Answer:

x = 80 degrees

Step-by-step explanation:

A straight line forms 180 degrees in total. It is given that the first angle is 100 degrees. 180 - 100 = 80, therefore x = 80 degrees

3 (4x - 2) - 30 = -6 (6 - 2x) - 20
A.Infinite Solutions/Identity
B.No Solution
C.x = 0
D.x = 1

show work please

Answers

Answer:

Step-by-step explanation:

3(4x-2)-30=-6(6-2x)-20

12x-6-30=-36+12x-20

12x-36=12x-56

Review the incomplete derivation of the cosine sum identity.

A 2-column table with 5 rows. Column 1 has entries step 1, step 2, step 3, step 4, step 5. Column 2 has entries cosine (x + y), sine (StartFraction pi Over 2 EndFraction minus (x + y) ), blank, sine (StartFraction pi Over 2 EndFraction minus x) cosine (negative y) + cosine (StartFraction pi Over 2 EndFraction minus x) sine (negative y), blank.

Which expressions for Step 3 and Step 5 complete the derivation?

Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) + y )
Step 5: cos(x)cos(y) + sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) + y )
Step 5: cos(x)cos(y) – sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) minus y )
Step 5: cos(x)cos(y) + sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) minus y )
Step 5: cos(x)cos(y) – sin(x)sin(y)

Answers

Answer:

Option (4)

Step-by-step explanation:

STEP - 1

cos(x + y)

STEP - 2

[tex]\text{sin}[\frac{\pi}{2}-(x+y)][/tex]

STEP - 3

[tex]\text{sin}[(\frac{\pi}{2}-x)-y][/tex]

STEP - 4

[tex]\text{sin}(\frac{\pi}{2}-x)\text{cos}(-y)+\text{cos}(\frac{\pi}{2}-x)\text{sin}(-y)[/tex]

STEP - 5

cos(x)cos(y) - sin(x)sin(y)

[Since, [tex]\text{sin}(\frac{\pi}{2}-x)=cos(x)[/tex] and [tex]\text{cos}(\frac{\pi}{2}-x)=\text{sin}(x)[/tex]]

[Since, cos(-x) = cos(x) and sin(-x) = -sin(x)]

Therefore, Option (4) will be the correct option.

Answer:

Step-by-step explanation:

Top Answer was right, don't know why it was rated poorly

CAN SOMEONE PLZ HELP ME:))))))))

Answers

I think it’s 20
I might be wrong

7) Cameron wants to buy new lacrosse equipment that costs $55.25. She plans to save $4.25 each
week. Write and solve an equation to determine how many weeks it will take her to save enough
money to buy the equipment. Define your variable and label your answer!

Answers

Answer:

13 weeks

Step-by-step explanation:

Let's say the number of weeks she will take is x. This would mean that 4.25 times the number of weeks(x) is equal to 55.25

Equation:

4.25x = 55.25

x=13

Help ASAP
Write the fraction [tex]\frac{45}{81}[/tex] in simplest form.

Answers

The simplest form of 45/81 is 5/9

Answer:

[tex]\frac{5}{9}[/tex]

Step-by-step explanation:

Given

[tex]\frac{45}{81}[/tex] ( divide numerator and denominator by HCF of 9 )

= [tex]\frac{5}{9}[/tex] ← in simplest form

Which ratio is NOT equivalent to 1:2

10:20
20:30
5:10
4:8

Answers

Answer:

The ratio 20:30 is not equivalent to 1:2.

20:30 is not equivalent

which of the following expressions represents the product of a number and 8

Answers

Answer:

The answer is c. 8x

To quickly find the product of a whole number time 1000, add *Blank* Zeroes to the number

Answers

Answer:

Add three zeros to the end.

Step-by-step explanation:

When you add three zeros, the result is equivalent to when multiplying by 1000. For example, 20 times 1000 is 20,000.

Hi! I believe your answer is 3 zeros. For example, 7 × 1,000 = 7,000 (add 3 zeros). I hope this helps you! Good luck and have a great day/night. ❤️✨

whats the capitol of Florida miaaaaaaa

Answers

Answer:

Tallahassee

Step-by-step explanation:

8x=-1/2 Whats the answer

Answers

that’s literally so easy are u kidding me

Which graph below shows the solution set for the inequality b ≥ 5?
pls help meeeeeeeee

Answers

Answer: we can’t see graphs but I can help you if you show me them

Step-by-step explanation:

someone please help me ASAP

Answers

Answer:

Step-by-step explanation:

1. 9.6x10^4

2. 7.2x10^8

3. 1.19x10^-7

4. 9.48x10^-3

5. 2.04x10^8

Jose paid 45.00$ for 5 movie tickets . EACH ticket cost the same amount . What was the cost of each movie ticket in dollars ?

Answers

Answer:

Step-by-step explanation:

divide 45 and 5, you get 9

Answer:

45.00$ divided by 5.00$ is 9.00$

i hoped this helped!

Step-by-step explanation:

Karen works at a car dealership. She makes only $5 an hour, but for every car she sells, she makes $1,000 in commission. If Karen worked 200 hours this month and made a total of $6,000, how many cars did Karen sell this month?

Answers

Answer:

Step-by-step explanation:

Emma jogs 2 miles along the beach in 1/3
of an hour. If she travels at a constant rate, how far will she jog in an hour?

1. Use the known information to write a rate.

Emma’s rate:
2 miles 1/3 hours

2. Write an equivalent rate with a denominator of 1.

2(3) miles / 1/3 (3) hours = ? /1 hour

Answers

Answer:

Step-by-step explanation:

6 miles

2 times 3 = 6

2 x 3/3 = 6

Which expression represents the area of this figure in square feet

Answers

Answer: A im positive its A

Step-by-step explanation: 3 times 2 equals 6 and add that to 3 times 4 which is 12 and you get 18

HELPS ME SOLVE THIS PROBLEM PLEASE

Answers

Answer:

The third answer, y = 4x + 1

Step-by-step explanation:

Let's take the pair x = 2, and y = 9.

We know what x is, and what the result, y, is now.

Let's plug x into the third equation, y = 4x + 1

y = 4 * 2 + 1

y = 8 + 1

y = 9

We already know that y = 9, so this equation is correct.

Hope this helps!

(Let me know if you want to know why it's not any of the others.)

four times a number p is more than 22

Answers

Answer:

[tex]4p\: > 22[/tex]

[tex]four \: times \: a \: number \: p \: is \: \\ more \: than \: 22[/tex]

The expression of inequality four times a number p is more than 22 is

4p > 22.

What is inequality?

Inequality compares two non-equal terms of both sides of the inequality sign. There are four types of inequality.

Given statement four times a number p is more than 22.

As it is stated more than we have to form an inequality strictly greater than 22 which is,

4p > 22.

p > 22/4.

p > 5.5.

This number p can also be represented on a real number line with an open circle at 5.5 and extended to infinity.

learn more about inequality here :

https://brainly.com/question/20383699

#SPJ2

Which statement is false A the inequality sign alwats opens up to the largers number. B the greater number in the equality is always above the number on the vertical number line. C the smaller number is inequality is always located to the left of the other number on the horizontal number line. D inequality sign always open up to a smaller number

Answers

Answer:

D inequality sign always open up to a smaller number

Step-by-step explanation:

Yesenia swims laps at a pool. For every 10 laps she swims the backstroke, she swims 15 laps of freestyle. Which ratio shows the number of laps Yesenia swims the backstroke to the number of laps she swims freestyle?

Answers

Answer:

2 3

Step-by-step explanation:

Perform the indicated operation.

(-7) · (-5)

-12
-35
12
35

Answers

Answer:

Step-by-step explanation:

A negative number multiplied by a negative number is positive. Multiplication is repeditive addition.

(-7) * (-5) = -(-7 + -7 + -7 + -7 + -7) or -( -5 + -5 + -5 + -5 + -5 + -5 + -5 ) = 35.

Answer:

35 is the answer I remember my brother telling me that two negitives always makes a positive no matter the symbol

Step-by-step explanation: 7 x 5 = 35 that is really all you have to do. but this is a random tip always remember that two negitives equal a positve also when you add positve to negitive it goes right so say you have -5 + 5 that would equal zero. when you add negitive and negitve numbers it will have a negitive sum

Ms. Rivera's class hoped to raise $135. They missed heir goal by $8.62. How ip much money did Ms. Rivera's class raise?
1. 144.42
2. 135
3. 126.38
4 127.28

Answers

Answer:

126.38

Step-by-step explanation:

$135.00-$8.62=$126.38

How to solve 3(x + 1) − (3x + 2)

Answers

Answer:

Step-by-step explanation:

3(x + 1) − (3x + 2)

we will expand the first bracket:

3x+3-3x-2

3x and -3x cancels

3-2=1

Answer:

Step-by-step explanation:

3x+3+−3x+−2

=(3x+−3x)+(3+−2)

Solve for h: A = (1/2)*b*h*
O h = 2*A*b
O h = A *(b/2)
O h = (2*A)/b
0 h = (2+b)/A

Answers

Step-by-step explanation:

The answer is the third option

2. Rena mixes i cup of blue paint for every cup of red paint to make purple paint.
Enter the number of cups of red paint Rena mixes with 1 cup of blue paint.

Answers

1 cup of red paint for every 1 cup of blue paint the ratio is 1:1

Any help and this please ??

Answers

Domain is y=2 and range is 4 I think

Vance wants to determine if an old photo frame is still rectangular. The height of the frame is
8 inches, the base is 6 inches and the diagonal is 10 inches long. Is the old photo frame still
rectangular? How do you know?

Answers

Answer:

The old photo frame is still rectangular

Step-by-step explanation:

Rectangles

The rectangle shape can be identified because it has 4 internal angles of 90° each. The diagonal forms with two adjacent sides a right triangle where the Pythagora's Theorem must stand. Being a and b the length of the sides of the rectangle and d the diagonal, then:

[tex]d^2=a^2+b^2[/tex]

Vince's photo frame has dimensions of 8 inches and 6 inches, with a diagonal of 10 inches. If the above condition is met, then the frame is still rectangular.

Calculating:

[tex]10^2=6^2+8^2[/tex]

[tex]100=36+64[/tex]

[tex]100=100[/tex]

Since the condition is met, the old photo frame is still rectangular

Other Questions

Most Cuban people work in service industries. Which of the following industries is not a common service in Cuba?A.bankingB.health careC.tourismD.cigar rolling Try These questions out and Ill give you brainliest This passage is about water bears i need help.pleaaseeeeeeeeee with the whole thing ..only two questions What do we call the technology that ancient civilizations used to get water from the rivers to theirfields? Which of these is likely to be a signal that a lecturer is giving one of his or hermain points?OA. He or she shows you the place it appears in his or her lecturenotesOB. He or she speaks in a louder voice or with more emphasis.C. He or she asks a question immediately afterward.D. He or she pauses to look out the window. choose and highlight the correct word for each sentence Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.Online Content: Site 1Online Content: Site 2What is the term used to define the subject in a command which implies that "you" do something? Who Knows This Question? I hope its clear enough but can some please help What should be the plot of a tragedy? an evil man who has a painful life because of bad luck an evil man who has a good life because of the mistakes of others a good man who has an easy life because he virtuous a man that is neither good nor evil whose life falls apart because of a mistake Is the line through points P(3, 2) and Q(2, 3) perpendicular to the line through points R(10, 1) and S(15, 6)? Explain. A number is equal to the difference of four times the number and 18 Graph each function and determine the y-intercept, then use the graph to determine the approximate value of the given expression.Y=3^x;3^1.2A. 1;3.7B. 1;2.9C. 0;3.9D. 0;3.5 Read this scene from The Miracle Worker Act 2. HELEN in her customary unkempt state is tucking her doll in the bottom drawer as a cradle, the contents of which she has dumped out, creating as usual a fine disorder. How do these stage directions add meaning to the play? The stage directions explain the historical time period. The stage directions describe Helens manner of speaking. The stage directions show how characters react to Helen. The stage directions provide characterization of Helen. what is the energy level of aluminum Which of the following could the national government not do under the Articles of Confederation? Which system is represented by the diagram below?MaleFemaleHypothalamusPituitary gland-Pineal glandThyroid glandAdrenalglandPancreasReproductiveglands-endocrine-exocrine-respiratory-immune 6=1/12v solve each equation. Check your solution How do we detect the cosmic microwave background radiation?A. by looking for a glow in the night skyB. by looking for radiation at the blue end of the spectrumC. through magnifying glassesD.through radio telescopes Write the equation for the following word problem: Lanessa wanted totake dance lessons(d) at the community center. If there was a one timefee of $20 and then a $10 fee per lesson, then how many lessons couldshe take for $180?