If y varies directly with x and
y = 21 when x = 3, find y if x = 5.
First, find the direct variation equation,
y = [ ? ]x

Answers

Answer 1

Answer:

y = kx

21 = k*3

Now use that to find x as needed.

Or, since y/x is constant (k), you can find the new x without even finding k.

You want x such that

105/x = 21/3

Step-by-step explanation:


Related Questions

In ∆ KLM above, NO // ML and < KNO = < KON. Find m < MNL =

Answers

Answer: In ∆ KLM above, NO // ML and < KNO = < KON. Find m < MNL =

Step-by-step explanation: dUNNO

A standard number cube,numbers 1 through 6 on each side,is rolled 3 times.what is the probability of rolling a 2 on all three rolls?

Answers

Answer: 1/216

Step-by-step explanation:

First roll has 1/6 probability of landing on 2. Second roll has 1/6 probability of landing on 2.  Third roll has 1/6 probability of landing on 2.

So you multiply 1/6*1/6*1/6 = 1/216

HELP i need to find area AND perimeter there is a triangle and a rectangle

Answers

Answer:

perimeter of this figure is = 54 cm

and area of traingle is = 1/2*base *height

so = 1/2*8*6

=. 24cm*cm

and area of rectangle = length * breadth

area = 112cm*cm

so total area = 112+ 24 = 136cm*cm

hope it helps and your day will full of happiness

Answer:

138 cm^2 = Area .          54 cm = Perimeter

Step-by-step explanation:

Find the area of the triangle-                                   b * h = A

                                                                                     2

                                                                                   8 * 6 = A

                                                                                      2

                                                                                   48/2 = A

                                                                                     24 = A

Find the area of rectangle-                                        l * w = A

                                                                                   16 * 7 = A

                                                                                      112 = A

Add the areas together.                                            24 + 112 = 136 cm^2

Perimeter is adding up all the sides.                         s + s + s + s + s

                                                                                   16 + 7 + 8 + 10 + 13 = 54 cm

How to solve 4 x = 16

Answers

answer: x=4
explanation: 16 divided by 4 equals 4

Answer:

x=4

Step-by-step explanation:

First we Divide both sides by 4 so we can just get x

For example

4x=16

x=4  We divided both sides by 4 because we need to get x and the reason why we also divided 16 by 4 is because what you do to one side you do to the other to keep the values  consistent

Hope I could help !

Use the table below to find what the out put will be when the input is 54. Explain

Answers

Answer:

The answer is 15

Step-by-step explanation:

adding 3 to y for each time 1 is added to y. since you start with a base of 9, we can conclude this answer by taking 3 times 15, which is 45, then adding 9, which makes 54. Like this:

0 | 9

1 | 12

2 | 15

...

13 | 48

14 | 51

15 | 54

30% of what equals 180

Answers

Answer:

600

Explination:

30% of 600 = 180

Answer:

600

Step-by-step explanation:

Which algebraic expression represents "the quotient of 7 and a number"? 7/n O 7+n o 7n
7-n​

Answers

Answer:

7/n

Step-by-step explanation:

quotient means division and the only answer choice with a division sign is 7/n where n is the unknown number.

Hope this helped and pls mark brainliest!

3. Find the value of X.

A) 33
B) 26
C) 28
D) 52

Answers

The value of x is 52.

Heather has made 28 note cards for her friends. She plans to send out a total of forty cards. What percentage of the cards has she finished?

Answers

Answer:

70%

Step-by-step explanation:

i don't really know how to explain it, but to double check .70 x 40 = 28 :)

Brayden stated that a flying disc had a circumference of 43.96 in. Eliza wanted to find the area of the same flying disc. What is the area of the flying disc rounded to the nearest whole number? Both Brayden and Eliza used 3.14 for π​

Answers

Answer:

=153.86

Step-by-step explanation:

Circumference: 43.96

43.96/3.14= 14 = diameter

14/2= 7 = radius

area= 3.14(7)^2

=3.14(49)

=153.86

Please help me! ASAP! WILL GIVE BRAINLIEST!!!

Answers

1. Given
2. Same Side Interior Angles Theorem
3. Corresponding Angles Postulate
4. Substitution

Si una escalera de bomberos de 37 metros de longitud,se apoya en la pared de un edificio,poniendo el pie de la escalera a 12 metros del edificio, ¿que altura, en metros, alcazan la escalera?

Answers

Answer:

La escalera alcanza 35 metros de altura.

Step-by-step explanation:

La altura que alcanza la escalera se puede calcular usando Pitágoras:

[tex] L^{2} = B^{2} + A^{2} [/tex]

En donde:

L: es la longitud de la escalera = 37 m

B: es la distancia del pie de la escalera al edificio = 12 m

A: es la altura =?

Entonces, la altura es:

[tex] A = \sqrt{L^{2} - B^{2}} = \sqrt{(37 m)^{2} - (12 m)^{2}} = 35 m [/tex]

Por lo tanto, la escalera alcanza 35 metros de altura.

Espero que te sea de utilidad!                                              

factor out the greatest common factor ?

Answers

Answer:

wait im srry i didnt get the question wht grade u in?

To find the GCF >>>> One of two or more expressions that are multiplied together to get a product.

1. 3x
2.7x^2
3. 3
4. 16x
5. 8xy
6. 5xy^2
7. 2x^4
8. 5xy

Please help me
PLEASE

Answers

Answer:

y=2x

Step-by-step explanation:

(2-0)              2

--------    =     -------

(1-0)              1

y=2x

Answer:

All I know is that this relation is a function

Step-by-step explanation:

Two lines in a plane are parallel if they blank cross​

Answers

Answer is A never I need to make this 20 words so don’t mind this

Answer:

Two lines in a plane are parallel if they never cross

Simplify. Assume that no denominator is equal to zero. (show work)
help please!!!!!

Answers

n^8

basically it's like this n^12/n^4 = n^(12-4) = n^8

A painter has finished painting 45% of a really long french. If she has painted 90 feet so far, how long is the entire fence?

Answers

90/x = 0.45
x = 90/0.45
x= 200 feet

bill paid $35.99 in tax on a laptop that cost $449.99. about what percent sales tax did bill pay

Answers

Answer:

Bill paid about 7% sales tax.

Step-by-step explanation:

First, to find the value of 1%, I divided $449.99 by 100, which gave me 4.4999. I then divided the amount paid for tax by the value of 1%. That;s $35.99 ÷ $4.4999 = 7.199439887977596. Obviously, you can't put that in your math homework, plus the question says "about," so you're going to round. Because the first number after the decimal point is less than five, you round down. Therefore, the sales tax is about 7%.

Which system below has no solution?
y=-4 * and y= 2 x-3
y= 4 * and y= 2 x - 3
y=-4* and y= 2 x + 3
y=-4-* and y= 2 x-3

Answers

Answer:

y=-4-* and y= 2 x-3

Step-by-step explanation:

Answer:

y = 4^ and y = 2 x - 3

please I need major help

Answers

Answer:

The slope is [tex]\frac{3}{2}[/tex].

Step-by-step explanation:

There aren't any options on the screen, so I just used the graph to figure out the slope. I hope that's okay.

-3(3x-8) apply distributive property

Answers

Answer:

-9x+24

Step-by-step explanation:

Multiply using the distributive property. Hope this helps :)

Tyler creates a scatter plot that displays the relationship between the grams of food a hamster eats, x, and the total number of rotations that the hamster's wheel makes, y. Tyler creates a line of best fit and finds that the residual for the point (1.4, 1250) is -132. The point (1.2, 1364) has a residual of 117. interpret the meaning of 117 in the context of the problem residual of 117. Interpret the meaning of 117 in the context of the problem.​

Answers

Answer:

The meaning of 117 is how far the point (1.2, 1364) is from the line of best fit.

Step-by-step explanation:

The residual is how far a point is from a line of best fit, the residual is 117.

Emilia went to a garage sale and decided to buy some books. Each book cost $2. She liked so many of the books that she went over her $10 budget. Let x represent how many books Emilia bought. Which inequality describes the problem? ​

Answers

Answer:20

Step-by-step explanation:

1:multiply

2:10x2

3:10x2=20

What is the value of x?

Answers

Answer:

12cm

Step-by-step explanation:

12 centimeters. It’s B.

Pls help quick dont stela points I will report u bums out there

Answers

I believe it is D.
I hope this helps :)


A photo album costs $10.49 before discount and tax.
There is a 30% off discount. After the discount, a 6%
sales tax is added.
What is the total after discount and tax?

Answers

Answer:

Total after tax and discount is $7.78

Step-by-step explanation:

(10.49×0.3)= 3.15

10.49 - 3.15 = 7.34

(7.34×0.06)= 0.44

7.34 + 0.44 = 7.78

Mrs. Flores is sending packages to two grandchildren.
The package for Santiago weighs 7.82 pounds, and the package for Sofia weighs 7.28 pounds.

Select words from the drop‐down menus to explain how Mrs.
Flores can use place value to find which package weighs more.

Mrs. Flores can compare each digit of the decimals starting from the
left or right?
.

The
ones
place of each weight is 7, so she should compare the
tenths
places.

The package for
Santiago
has an 8 in the
tenths
place, and the package for
Sophia
has a 2 in the same place.

So, the package for
Santiago
weighs more.

Answers

Answer:

34

Step-by-step explanation:

but who cares teachers are bad math is easy stopp

using this

app

Which is true? Pls help

Answers

Answer:

b i think

Step-by-step explanation:

Answer: the answer is the 3rd one or C

Step-by-step explanation:

Can someone help me on this

Answers

Answer:

Step-by-step explanation:

14y-1=11y+17 subtract 11y from both sides

3y-1=17 add 1 to both sides

3y=18, divide both sides by 3

y=6

Since DG=EF

EF=9y+4 and using y=6

EF=9(6)+4

EF=54+4

EF=58

round to the nearest tenth ​

Answers

Answer:

Step-by-step explanation:

Say you wanted to round the number 838.274. Depending on which place value you'll round to, the final result will vary. Rounding 838.274:

Rounding to the nearest hundred is 800

Rounding to the nearest ten is 840

Rounding to the nearest one is 838

Rounding to the nearest tenth is 838.3

Rounding to the nearest hundredth is 838.27

Basic Rules of Rounding

When you "round to the nearest _____" regardless of what goes in the blank the steps are nearly always the same:

Identify which place value you are rounding to. The smaller the place value, the more accurate the final result will be.

Look to the next smallest place value, the digit to the right of the place value you're rounding to. For example, if you want to round to the nearest ten you'd look at the ones place.

If the digit in the next smallest place value is less than five (0, 1, 2, 3, or 4), you leave the digit you want to round to as-is. Any digits after that number (including the next smallest place value you just looked at) become zeros, or drop-off if they're located after the decimal point. This is called rounding down.

If the next smallest place value is greater than or equal to five (5, 6, 7, 8, or 9), you increase the value of the digit you're rounding to by one (+1). Just like before, any remaining digits before the decimal point become zeros, and any that are after the decimal point are dropped. This is called rounding up.

Round to the Nearest Hundred: 3250

Identify the hundreds digit: the 2 in 3250

Identify the next smallest place value: the 5 in 3250

Is that digit greater than or equal to five? Yes, so round up.

Increase the hundreds digit by one, so 2 becomes 3. Every digit after becomes a zero.

3250 rounded to the nearest hundred is 3300

Round to the Nearest Ten: 323.5

Identify the tens digit: the 2 in 323.5

Identify the next smallest place value: the 3 in 323.5

Is that digit greater than or equal to five? No, so round down.

The tens digit stays the same at 2. Every digit after becomes a zero. Digits after the decimal point are dropped.

323.5 rounded to the nearest ten is 320

Round to the Nearest Ten: 499

Identify the tens digit: the first 9 in 499

Identify the next smallest place value: the second 9 in 499

Is that digit greater than or equal to five? Yes, so round up.

The tens digit increases by one. Since 9+1=10, you need to carry the 1 and add it to the digit in the hundreds place. Each digit after becomes a zero.

499 rounded to the nearest ten is 500

Round to the Nearest Tenth: 0.74

Identify the tenths digit: 7 in 0.74

Identify the next smallest place value: the 4 in 0.74

Is that digit greater than or equal to five? No, so round down.

The tenths digit stays the same at 7. Since the remaining digits are after the decimal point you just drop them.

0.74 rounded to the nearest tenth is 0.7

Round to the Nearest Hundredth: 3.141

Identify the hundredths digit: the 4 in 3.141

Identify the next smallest place value: the second 1 in 3.141

Is that digit greater than or equal to five? No, so round down.

The hundredths digit stays the same at 4. Drop the digits to the right of 4.

3.141 rounded to the nearest hundredth is 3.14

Other Questions
PLS HELPPP I HAVE NO IDEA WHICH ONE IT IS What type of chemical reaction is this? derivation through first principle sin 2x? Which is a legal consequence associated with drug abuse? 4 Solve the system graphically. y=2/3-4 y=-1x+1 a person who wants to get in shape goes to a local gym that advertises 45 training sessions for $712. find the cost of 145 training sessions 15 POINTS PLEASE ANSWERWhat equation can be used to find the following: "9 is 45% of what number" Anika has purchased 5 non fictions books and 4 fiction books. How many different orders can she read them in How does the digestive system interactwith other body systemms? Help pls is this a non-linear or linear??? What is the branching network of filaments of a fungus called?A. SporesB. BasidiaeC. HyphaeD. Mycelium What's the answer pleaseee?? Why is primary succession so much slower than secondary succession? (page 14 LADY LIBRITY The statue of liberty is made of copper and over time has been oxidized by water and air, making it green instead of silver. What kind of weathering is this?erosionphysical weatheringdepositionchemical weathering Please help me?!!!!!! On a coordinate plane, the x-axis is labeled bags of trail mix and the y-axis is labeled ounces of almonds. Line a is labeled y = 4x, line B is labeled y = 2 x, and line C is labeled y = x + 2.Trevor uses 2 ounces of almonds in each bag of trail mix he makes.A 2-column table with 3 rows. Column 1 is labeled bags of trail mix with entries 2, 4, 6. Column 2 is labeled almonds (ounces) with entries 4, 8, 12.Line on the graph represents the same relationship between quantities. which of the following can cause skin cancer and which can't?CampfireFlashlight LampSunTanning bedfluorescent light bulbs Need to find the area of ABCE Joanna has a total of 50 coins in her purse.The coins are either dimes and quarters.The total value of the coins. $7.10 The food below the bowl is