Combine these radicals.
-V5 -3v5

Combine These Radicals.-V5 -3v5

Answers

Answer 1

[tex]-\sqrt 5 -3\sqrt 5\\\\\\=(-1-3)\sqrt 5\\\\\\=-4\sqrt 5[/tex]

Answer 2

Answer:

b

Step-by-step explanation:


Related Questions

pls help me with this ​

Answers

The answer is A. 8.28

306.87-298.59= 8.28

Consider the two solids shown.



What is the difference between the number of vertices of the two solids?

one
three
four
six

Answers

I’m not sure but when I check it show 6

8x-1<2x+5
If x is a number greater than zero that satisfies the inequality above, what is one possible value of x?

Answers

Step-by-step explanation:

There is no number greater than zero that satisfy the above inequality

but if the sign is less than or equal to 1 will work

Answer:

0 < x < 1

any fraction bigger than zero and less than 1.

Step-by-step explanation:

8x - 1 < 2x + 5

Subtract 2x

6x - 1 < 5

Add 1.

6x < 6

Divide by 6.

x < 1

They are asking for a number bigger than zero. But 1 does not work because the answer has to be less than one. Pick any fraction between zero and one.

The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is 40 or older is chosen at random, what is the probability that they have completed a bachelor's degree and no more? Round your answer to the nearest thousandth.

Answers

Using it's concept, it is found that there is a 0.183 = 18.3% probability that the person has completed a bachelor's degree and no more.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

Researching this problem on the internet, it is found that 529 + 1054 = 1583 out of 1911 + 6730 = 8641 people aged 40 or older have completed a bachelor's degree and no more, hence the probability is given by:

p = 1583/8641 = 0.183.

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what is the system solution to 8x + 7y = 39

Answers

Answer:

-8/7

Step-by-step explanation:

I thinks this is the answer

write an explicit formula for each geometric sequence
1000,200,40,...​

Answers

Answer:

[tex]\text Explicit \ Formula :\ a_{n}= 1000\times (\frac{1}{5}) ^{n-1}[/tex]

Step-by-step explanation:

Let [tex]\left( a_{n}\right)[/tex]  be our geometric sequence

The explicit formula for [tex]\left( a_{n}\right)[/tex] is :

 [tex]a_{n}= a_1\times r^{n-1}[/tex]

where r is the common ratio

          a1 is the first term

We notice that :

200/1000 = 1/5

40/200 = 1/5

⇒ r = 1/5

[tex]a_1 = 1000\ \ (given)[/tex]

Conclusion:

[tex]a_{n}= 1000\times (\frac{1}{5}) ^{n-1}[/tex]

homework problem lol​

Answers

Answer:

G is the answer hope that helpd

1) For what values is the statement true? sin(x+20)°=cos(y−10


x=20, y=60


x=20, y=50


x=30, y=40


x=30, y=60


2)In right triangle ABC with right angle C, sinA=4/5 and cosA=3/5. What is sinB+cosB?


1/5


7/5


35/12


5/7


3)In a right triangle ABC where sinA=cosB, what are the measures of acute angles A and B if the measure of angle A is three times the measure of angle B?


The measure of angle A is 67. 5° and the measure of angle B is 22. 5°.


The measure of angle B is 135° and the measure of angle A is 45°.


The measure of angle A is 135° and the measure of angle B is 45°.


The measure of angle B is 67. 5° and the measure of angle A is 22. 5°.


4)What is the value of b that makes the equation cos(17b+26)°=sin(15b)° true?


13


2


9. 5


3

Answers

Answer:

1) X =20° ,Y=60°

2) 7/5

3) first is correct

4) 2

Who invented mathematics??

Answers

Archimedes is known for mathematics.
Archimedes
He is known as the father of math

Jogging burns 375 calories in 45 minutes. Determine how many calories are burned per hour.

Answers

Answer:

500 calories an hour are burnt.

Step-by-step explanation:

45 is 3/4 of 60, so 375 is 3/4 of an hour of jogging. If we divide 375 by 3 we will get how many calories are burnt every 1/4 of an hour.

375 / 3 = 125

Now that we know what 1/4 of an hour equals we can add 125, 4 times to find the number of burnt calories in an hour of running.

125 + 125 + 125 + 125 = 500

that means jogging burns 500 calories an hour.

Below are some perfect square root numbers. What would the next perfect square root be?
[tex] \sqrt{4} [/tex]
[tex] \sqrt{9} [/tex]
[tex] \sqrt{16} [/tex]
[tex] \sqrt{25} [/tex]

Answers

root 4= 2
root 9= 3
root 16= 4
root 25= 5
root …= 6

Liz is taking guitar lessons and practices every night. Yesterday, she played a total of 40 chords in 8 minutes. Today, she will play chords for 5 minutes.
If she plays at the same rate, how many chords will Liz play today?

Answers

Answer:

25

Step-by-step explanation:

If you divide by eight, it is equivalent to five cords per minutes.

Now you know that she plays five cords per minute, right?

So you want to multiply five by five, because she plays a total of five minutes.

You normally pay your line cooks $22 per hour, but one has worked overtime and should be paid time and a half. What is
the correct overtime pay per hour?

Answers

Answer:

  $33 per hour

Step-by-step explanation:

"Time and a half" means the overtime rate is 1 1/2 times the base rate.

  overtime rate = (1 1/2) × $22/hour = $(22 +1/2(22))/hour = $33/hour

The correct overtime rate is $33 per hour.


© There are 5 times as many females as males on the maths course at university. What fraction
of the course are female?
Give your answer in its simplest form.

Answers

Answer: 5/6

Step-by-step explanation: Females are 5 times more

Ratio of female to male will be 5:1

Female will be 5/6 and males will be 1/6

a school plans to start selling snacks at their basketball games they want to know what your snacks would be most popular​

Answers

Answer:

takis

Step-by-step explanation:

everyone in gen z loves takis for some reason

In a class test, (2) marks are given for every correct answers and (-1) marks for every
incorrect answers and no marks for not attending any questions.
Sreya scored 30 marks. If she got 16 correct answers, how many questions has she attempted
incorrectly?

Answers

Using a system of equations, it is found that she attempted two questions incorrectly.

What is a system of equations?

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this question, the variables are:

Variable x: Number of questions attempted correctly.Variable y: Number of questions attempted incorrectly.

Sreya scored 30 marks, with 16 correct questions, hence, considering the amount of points for each question, we have that:

2x - y = 30.

Since x = 16:

32 - y = 30

y = 2.

She attempted two questions incorrectly.

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The Red Mills Children's Hospital has raised 70% of the money they need for medical supplies. If they need a total of $900, how much money has the hospital raised so far?

Answers

Answer:

$630

Step-by-step explanation:

They raised 70% of $900.

70% of $900 = 70% × $900 = 0.7 × $900 = $630


George wants to watch all 23 games that a football team will play at home next season.
He can buy
a season ticket costing £425
or 23 separate tickets costing £24 each ticket.
What percentage of the total cost of 23 separate tickets does George save by buying a
season ticket?

Answers

The percentage of the total cost of 23 separate tickets that George saves by buying a season ticket is 23%.

What are percentages?

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

As the cost of the separate ticket is £24, and there are a total of 23 games, therefore, the total cost of the 23 games separate ticket can be written as,

=  £24 × 23

=  £552

Now, the cost of the season ticket is £425, therefore, the percentage of the total cost of 23 separate tickets that George saves by buying a season ticket can be written as,

[tex]\rm Percentage = \dfrac{\text{Total cost of 23 seperate ticket}-\text{Cost of season ticket}}{\text{Total cost of 23 seperate ticket}} \times 100\%[/tex]

[tex]\rm Percentage = \dfrac{552-425}{552} \times 100\% = \dfrac{127}{552} \times 100\% = 23\%[/tex]

Hence, the percentage of the total cost of 23 separate tickets that George saves by buying a season ticket is 23%.

Learn more about Percentages:

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PLEASEEE HELP !!
Matching equations with diagrams & finding unknown ancies
is on line WY. Find the value of b.
Which equation(s) and angemeurerents go with the
diagram. Choose ALL that apply
(Select all that apply.)

Answers

Answer: b+95+34=180, b+129=180, 51

Step-by-step explanation:

b+95+34=180 works because the angles add to form a straight angle.

From this, we can obtain b+129=180 by adding the two constants.

Subtracting 129 from both sides, we get b=51.

Is the following number rational or irrational?
-2π
Choose 1 answer:
А
Rational
00
B
Irrational

Answers

Answer:

B, Irrational number

Step-by-step explanation:

Irrational number because

[tex]\pi[/tex]

is Irrational number

A meal that serves 6 people contains 5,364 calories.

How many calories are in each serving?

Enter your answer in the box.

Answers

The amount of calories in each serving of the meal given the amount of calories in 6 servings is 894 calories.

What does division mean?

Division is the process of obtaining the quotient of a number by grouping a number into equal parts using another number. The sign used to denote division is ÷.

How many calories are in each serving?

Calories in each serving = total calories / number of people

5364 / 6 = 894 calories

To learn more about division, please check: https://brainly.com/question/13281206

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Help me pls
[tex]{ x }^{ 2 } -7x+12[/tex]

Answers

Answer:

x is 3 or 4

Step-by-step explanation:

I assume that you want to find the solutions for this quadratic equationFirst of all, set it all to equal 0[tex]x^{2}-7x+12=0[/tex]Now you need to factorise your expressionYou need to find two numbers that multiply together to make 12, and ad together to make -7These two numbers are -3 and -4Your new equation is:[tex](x-3)(x-4)=0[/tex]For this equation to equal 0, just one of x - 6 and x - 1 has to equal 0For x - 3 to equal 0, x has to be 3For x - 4 to equal 0, x has to be 4x = 3 or 4
Yore answer here is 4 ….

The perimeter of a rectangle is 60 cm. Its width measures
16 cm. What is its length?
Let x = the length of the rectangle. Choose the equation that represents this
problem.
O A. 2x+32 = 60
B. X+ 16 = 60
O C. 2x-32 = 60
D. 2x+ 16 = 60

Answers

Answer:

Option a :- 2x+32 = 60

Step-by-step explanation:

Formula to calculate perimeter:-- P=2(l+w)

2(l+w) = P

2l + 2w = P

2x + 2(16) = 60

2x + 32 = 60

[tex] \therefore [/tex] The equation that represents this problem = 2x+32 = 60

What is the probability that a hand of 5 cards chosen randomly and without replacement from a standard deck of 52 cards (which has 4 kings and 4 queens) contains the king of spades, exactly 1 other king, and exactly 2 queens

Answers

Answer: Approximately 0.0003047

As a fraction, it is equal to exactly 792/(2,598,960)

===========================================================

Explanation:

The king of spades must be in the hand, and we can pick any other king. There are 3 ways to pick the other king. Then there are 4 C 2 = 6 ways to pick the two queens. The 4C2 refers to the nCr notation. Or you could use Pascal's Triangle.

Overall, there are 3*6 = 18 ways to pick the king of spades, another king, and exactly 2 queens.

Then we have one more card to pick that isn't a king nor a queen. There are 4+4 = 8 cards that are either a king or queen, leaving 52-8 = 44 cards that are neither.

So there are 18*44 = 792 ways to pick a king of spades, another king, exactly 2 queens, and some other card that isn't a king nor queen.

This is out of 52C5 = 2,598,960 possible five card hands.

The probability we're after is roughly 792/(2,598,960) = 0.0003047

Side note: order does not matter with card hands.

There is a leak in a container that holds a certain nontoxic gas. Each hour, it loses 10% of its volume.
Write an equation that models the amount of gas left in the container after x hours, assuming there were 300 cubic centimeters in the container before the leak. Then use your equation to determine the amount of gas left in the container after 11 hours. Round your answer to the nearest tenth.

Answers

Answer:

94.1 cm^3 to nearest tenth.

Step-by-step explanation:

Each hour 100 - 10 = 90% of the gas remains.

90% = 0.90.

At 0 hours the volume = 300 cm^3

The equation is

Amount (V) after x hours = 300(0.90)^x.

The amount after 11 hours:

V = 300(0.90)^11

= 94.14

Answer:

y = 300(0.9)^x

94.1 cm³

Step-by-step explanation:

This is an exponential decay.

y = 300(0.9)^x

where x is the number of hours, and y is the amount after x hours.

y = 300(0.9)^11

y = 94.1

find value of variable

Answers

Answer:

x = 23.5

Step-by-step explanation:

By inscribed angle theorem:

[tex](2x + 1) \degree = \frac{1}{2} \times 96 \degree \\ \\ \implies \: (2x + 1) \degree = 48 \degree \\ \\ \implies \: 2x + 1 = 48 \\ \\ \implies \: 2x = 48 - 1\\ \\ \implies \: 2x = 47\\ \\ \implies \: x = \frac{47}{2} \\ \\ \implies \: x = 23.5[/tex]

Claudio noticed that the sides of his $1 bill formed angles. Tell whether the angles are right angles, less than right angles, or greater than right angles. Explain.

(no picture to insert)

Answers

Claudio’s $1 bill has right angles because the sides of the bill are perpendicular to each other, so the angles of the bill are 90 degrees or right


Hope this helped you out a bit

Select all of the equations that are equivalent to 4x+20=90

1. 4(x+5)=90

2. x+5=22.5

3. 4(x+20)=90

4. x+20=22.5

5. 4x=70





pls pls tell me

Answers

Answer:

The answer is num 1 I think, 4(x+5)=90

The radius of a circle is 4 m. Find its area to the nearest whole number.

Answers

Answer:

16π or around 50.26

Step-by-step explanation:

A=πr²

A=π(4)²

A=16π

A=16(3.1415926)

A=50.26

I think it’s A≈50.27m²

can somebody help me and explain how to do this

Answers

Answer:

=> 24m²

Step-by-step explanation:

Area of small rectangle = b

=> 2m× 3m

=> 6m²

Area of large rectangle = B

=> 9m × 2m

=> 18

Area of figure = area of small rectangle + area of large rectangle

=> 18 m² + 6m ²

=> 24m²

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