Find the value of the variable using these steps.

0.4x + 3.9 = 5.78

1. Subtraction property of equality

2. Division property of equality

Answers

Answer 1

Answer:mean you have to switch define

1. Subtraction property of equality

2. Division property of equality

Step-by-step explanation:

Answer 2

Step-by-step explanation:

0.4x+3.9=5.78

0.4x=5.78-3.9

0.4x=1.88

x=1.88

0.4

x=4.7 ans

hope u want this.


Related Questions

Q1. Mara is building a wind chime. She needs string in the following lengths: 6 pieces
of 20 cm, 3 pieces of 30 cm, and 1 piece of 40 cm. How much string does she need?

Answers

Mara needs 250 cm of sting
Kdkdlclhckdmxkckgcgkckgxlglg

wanna know ur iready math scores?

Answers

Answer:

woah this is cool! thanks! :)))

Step-by-step explanation:

Find the area. Simplify your answer.

Answers

24x? i haven’t done these in a while so lmk if i’m wrong

A shoe store uses a 40​% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a wholesale cost of ​$69​?

Answers

Answer:

$27.60

Step-by-step explanation:

Answer: 96.60

Step-by-step explanation:

Math question I need help with it please help me !

Answers

Answer:

96 degrees

Step-by-step explanation:

Answer:

x = 5°

Step-by-step explanation:

Because of the given congruency,

Angle A = Angle D = 50° = 10x

10x = 50

x = 5°

HOPE IT HELPS!!!

Express (x – 3)2 as a trinomial in standard form.

Answers

Answer:

x^2 - 6x + 9

Step-by-step explanation:

173,700,000 in scientific notation

Answers

Answer:

737 x 10*8

Step-by-step explanation:

PLEASE MARK BRAINLIEST

Answer:

1.73*10^8  

Step-by-step explanation:

SOMEONE HELP ITS URGENT

What is the product of -3/11 and -2/13?


Group of answer choices


6/143


5/24


-5/24


-6/143

Answers

I think it's b I might be wrong sorry if I am

Step-by-step explanation:

school... are you aloud to skip school!!

Answers

it depends :/ like it depends on the class n shi but never ever skip 2 periods inna row cuz then

u too susss. also yes

writing random exp.

for points so dont  come at me

Answer:

if you really wanted to but i would say no

Step-by-step explanation:

Children are required by law to attend school until they reach a certain age, which varies by state (typically 16–18 years), unless an absence is formally excused by a school official or the child has been expelled.

Games at the carnival cost $2.50 each. The prizes awarded to winners cost $135.00. How many games must be played to make at least $45?


71


71.5


72


72.5
help

Answers

Answer:

The correct option is 72.

Step-by-step explanation:

To calculate this, we first let x represent the number games that must be played to make at least $45.

Based on this, we can have an in equality equation as follows:

2.50x - 135 ≥ 45

We can now solve for x as follows:

2.50x ≥ 135 + 45

2.50x ≥ 180

x ≥ 180 / 2.50

x ≥ 72

This implies that at leats 72 games must be played to make at least $45. Therefore, the correct option is 72.

How many gallons of a 3% salt solution must be mixed with a 7% salt solution to obtain 100 gallons of a 5% salt solution.

Answers

Answer:

50 gallons of each.

Step-by-step explanation:

You have 0.54 meters of string to use for a homework project. You need to cut it into pieces that are 0.08 meters each. How many whole pieces can you get?

Answers

you can get 6 whole pieces because .54 divided by .08 equals 6.75, but you have to have whole pieces, so 6. hope you get a good grade!

Help Fast
Quicklkkkkkkkkkk

Answers

I can’t see the graph so well

Answer:

Now from the top make it drop that a wapgbrbehdhdjfh I D fgddhhdhsddhhhdhdhhddddd

8/15÷4/5 Help Anyone

Answers

Answer:2/3

Step-by-step explanation:

In the Queen's Imperial State Crown, the ratio of diamonds to emeralds is 1:4. If the crown has 16 emeralds. Find how many diamonds will it have.

Answers

The crown has 4 diamonds

There are total 4 Diamonds.

What is Algebra?

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

Ratio of diamonds to emeralds = 1:4.

Total = 16 emeralds

let the common ratio be x.

Emeralds = 4x and Diamonds = x

So, 4x = 16

x= 4

Thus, number of diamonds

= 4

Hence, there are 4 diamonds.

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Parallel lines have the same slope.

True

False

Answers

Answer:

True

Parrellel lines never intersect and they go on and on forever. So, they have the same slope.

Hope this Helps!

Answer:

The statement is true.

Parallel line have same slope.

write these in simpler form using indices
2×2×2×2×2×2
7×7×7×7
2×2×3×3×3×3×5×5×5
Hint:Write the different numbers separately

Work out theses,giving your answers in index form
[tex]2 {}^{2} \times 2 {}^{4} [/tex]
[tex]3 {}^{6 } \times 3 {}^{2} [/tex]
[tex]4 {}^{2} \times 4 {}^{3} [/tex]
[tex]5 {}^{6} \times 5[/tex]
Work out these,giving your answers in index form.

[tex]5 {}^{5} \div {5}^{2} [/tex]
[tex]7 {}^{8} \div 7 {}^{2} [/tex]
[tex]2 {}^{6} \div 2 {}^{4} [/tex]
[tex]3 {}^{7} \div 3 {}^{3} [/tex]
Work out these,giving your answers in index form

[tex]5 {}^{5} \times 5 {}^{3} \div 5 {}^{2} [/tex]
[tex]10 {}^{4} \times 10 {}^{6} \div 10 {}^{5} [/tex]
[tex]8 {}^{3} \times 8 {}^{3} \div 8 {}^{4} [/tex]
[tex]3 {}^{7} \div 3 {}^{3} [/tex]





Answers

Answer:

what do I work out there is so much

Use the quadratic formula to find the solutions to the equation.
3x2 - 10x + 5 = 0

Answers

Answer: A

Step-by-step explanation:

3x² - 10x + 5 = 0

a = 3      b = -10     c = 5

Δ = b²- 4ac = 100 - 4.3.5 = 40 > 0 => have 2 solutions

=> x = [tex]\frac{10+\sqrt{40} }{6}[/tex] or x = [tex]\frac{10-\sqrt{40} }{6}[/tex]

[tex]x= \frac{10\pm \sqrt{40} }{6}[/tex] is the solution to the given quadratic equation.

What is quadratic equation?

Quadratic equations are the polynomial equations of degree 2 in one variable of type f(x) = [tex]ax^{2} +bx+c[/tex] = 0 where a, b, c, ∈ R and a ≠ 0. It is the general form of a quadratic equation where 'a' is called the leading coefficient and 'c' is called the absolute term of f (x).

Quadratic formula = [tex]\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}[/tex]

Given quadratic equation

[tex]3x^{2} -10x+5=0[/tex]

a = 3, b = -10, c = 5

Quadratic formula = [tex]\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}[/tex]

[tex]x= \frac{-(-10)\pm \sqrt{(-10)^{2} -4(3)(5)} }{2\times3}[/tex]

⇒ [tex]x= \frac{10\pm \sqrt{100 -60} }{6}[/tex]

⇒ [tex]x= \frac{10\pm \sqrt{40} }{6}[/tex]

Hence,  [tex]x= \frac{10\pm \sqrt{40} }{6}[/tex] is the solution to the given quadratic equation.

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i don’t get this can someone help

Answers

Answer:

y= 1/2x - 3

Step-by-step explanation:

So! Usually, I start by finding the y intercept. The line hits it at -3. After that, you would use RISE/RUN. When using that, you can see that you go up 1, to the right to. Since you are going up and to the right, it's a positive slope (1/2).

I really hope this helps!

Answer: the slope is 1/2

Step-by-step explanation: when you look at the line you look at the line that touches the little dots that touches the line after you see that you do rise over run and simplify when you can

A box of cereal states that there are 87 calories in a 3​-4cup serving. What is the unit rate for calories per​ cup? How many calories are there in2 cups of the​ cereal?

Answers

Answer: for 2 cups, There are 232 Calories.

Step-by-step explanation:

Step 1

Let the calories in one cup be represented as C

 Therefore

3/4 x C = 87 calories

C = 87 X 4 / 3 = 116

unit rate is 116 calories per cup.

Step 2- Solving the number of calories in 2 cups

1 cup serving = 116 calories

2 cups servings = 116 x 2= 232 calories

What is the y=Mx+b of this equation

Answers

Answer:

[tex]y = - 6x - 8[/tex]

Step-by-step explanation:

The y-intercept is where the line itersects the y-axis, which is the dark vertical line. This is -8 represented as the constant in the equation.

To find the slope, find the rise over run. Every time the line goes over 1 it goes down 6, so the slope would be -6.

HELP ILL GIVE BRAINLISt pleASE!!!


All three points displayed are on the line. Find an equation relating x and y.
(6,9)
(3,3)

Answers

Answer:

x=6,3 and y=9,3

Step-by-step explanation:

then used formula of distance

See image below for question

Answers

Answer:

-1/3

Step-by-step explanation:

Rewrite as y = ax + b then inspect a

-y - (1/3)x = 0

y = (-1/3)x

so slope is -1/3

45/56 divided by (-.15)

Answers

Answer: I’m pretty sure it’s -5.36 rounded up, if it’s not rounded then it would be -5.367

Answer: 45/56 has a decimal is 0.8035714286.

0.8035714286 divided by -0.15 is -5.357142857 or -5.4

Step-by-step explanation: Also

You are beautiful. You are amazing. You are wonderful. You are perfect just the way you are. Never worry about the way people think about you. Only worry if you like you. You are the most important person to yourself. Just be yourself. No can tell you who you can be. You are truly perfect just the way you are. Never tell yourself you are not good enough, you are enough. Never tell yourself "I'm ugly" you are beautiful. Never let yourself down.

if n = 4, the value of the expression
[tex]28 - 12 \sqrt{n \div 2} [/tex]


Answers

Answer:

pretty sure it's 17

Step-by-step explanation: just did it

The value of the expression is 11.032

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

28 - 12 √(n ÷ 2)

Sustitute n = 4

= 28 - 12 √(4 ÷ 2)

= 28 - 12√2

= 28 - 12 x 1.414

= 28 - 16.968
= 11.032

Thus,

The value is 11.032

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Evelyn is buying a motorcycle that costs $14,000. The tax rate is 6.75%, and she plans to make a down payment of $1,500. The sales tax is
added before the down payment is applied. She is considering a three-year loan

Answers

Answer:

449.10

Step-by-step explanation:

Her monthly payment, if she is considering a three-year loan is $373.47

Given the cost of the motorcycle to be $14000

If the tax rate is 6.75%, the total cost plus tax is expressed as:

Final cost = 14000+(0.0675 * 14000)

Cost of motorcycle = 14000 + 945

Cost of motorcycle = $14945

If she plans to make a down payment of $1,500 before the sales tax is applied, then;

Balance = 14945 - 1500

Balance = $13,445

If she considers  a three-year loan, her monthly payment will be ;

Monthly payment = 13,445/36

Monthly payment = $373.47

Hence her monthly payment if she is considering a three-year loan is $373.47

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1
Vie
3
Jaylan makes limeade using cup water per
cup lime juice. Wanchen makes limeade
f ste
Vid
1
using cup water per cup lime juice. Find the unit rates of water (cups) per lime
2
3
juice (cups). Whose limeade has a weaker lime flavor? Enter your answer as a proper
fraction or a mixed number.
Te
Pri
Part 1 out of 2
Jaylan's limeade contains
Wenchan's limeade contains
cups water per cup of lime juice.
cups water per cup of lime juice.

Answers

Answer:

limeade has a weaker lime flavor? Enter your answer as a proper

fraction or a mixed number.

Plzzzzz help meee!!!

Answers

I need to see the solution

Derek has $20 to spend on used books. Hard cover books cost $5 each and paperbacks cost $2 each. Complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy. What are the possible combinations of books that Derek can buy? Select all that apply.


A. (-2,15)
B. (0,10)
C. ( 2,5)
D. (3,5/2)

Answers

Answer:

c i think

Step-by-step explanation:

PLS HELP BEING TIMED!!!!
Which describes the transformation that could have been applied to triangle ABC?
A dilation could have been applied because all of the
vertices decreased by 2 units.
O An isometric transformation could have been applied
because all of the vertices moved 2 units right and 2
units down.
A dilation could have been applied because all of the
vertices increased 2 units.
An isometric transformation could have been applied
because all of the vertices moved 2 units left and 2
units up.

Answers

Answer: I’m sorry im late, but the answer to your question should be B.

Step-by-step explanation: reason being is because the figure didnt grow/shrink like it would for a dilation so that gets rid of A. And C. And its not D. Because the dashed triangle is our original triangle not our new one so it would not make sense for it to go up and to the left. Thanks for coming to my ted talk

The image A'B'C' is formed by an isometric transformation because all of the vertices moved 2 units right and 2 units down, the correct option is B.

What is Transformation?

Transformation is the process of changing the graph to a new graph by Rotation, Reflection, Translation, and Dilation.

Rotation is a type of transformation of an object on an x-y plane, when an object is turned clockwise or anticlockwise by a certain angle, the object is said to be rotated.

Reflection is creating a mirror image of the object, which is same in shape and size but only the coordinates have been changed.

Translation is moving the object, up, down, left or right on the coordinate axis.

Dilation is changing the size of the object, the original object is either enlarged or compressd by certain scale factor.

The object ABC shown in the image has coordinates A ( -2, 5), B (-5, -3), C(1, -3) and,

The image has the cooridnates A'(0,3), B'(-5,-3) , C'(3, -5).

The coordinates have been transformed by translation.

The transformation is an isometric transformation could have been applied because all of the vertices moved 2 units right and 2 units down.

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