can someone help me with this problem? thank you!

Can Someone Help Me With This Problem? Thank You!

Answers

Answer 1

Answer:

When 6x - 4 = 8, x = 2.

Step-by-step explanation:

6x - 4 = 8

Add 4 to both sides.

6x = 12

Divide both sides by 6.

x = 2

Proof:

6x - 4 = 8

Substitute variable.

6(2) - 4 = 8

Multiply 6 and 2.

12 - 4 = 8

Subtract 4 from 12.

8 = 8

Answer 2

Answer:

x is 2

Step-by-step explanation:

Simplify equation

What happens to one side must happen to the other

Add 4 to both sides

This tells us 6x is 12

Divide both sides by 6

X is 2


Related Questions

help please I dont have any time left

Answers

Answer:

The distribution of the ages of vice president shows that the youngest age is about 36 while the oldest age is around 72. The median age of vice president is 53. On the lower end, the common age is 48 while the age of 60 is upper median age.

Mark is planning to swim the 200-yard freestyle event at the next
swim meet. The host team measures distance using meters. How
many meters will Mark swim
in this event?

Answers

Mark will swim 182.88 meters

Mango has 2.5% salt content per gram. How many grams of Mango does it take to produce 9 gram of salt? Show your work.​

Answers

Answer:

360 g

Step-by-step explanation:

Amount of Salt = 2.5% x Amount of Mango

Taking 9 g as the amount of salt :

9 g = 2.5% x Amount of MangoAmount of Mango = 9/0.025Amount of Mango = 9 x 40Amount of Mango = 360 g

Vanessa uses the expressions (3x² + 5x + 10) and (x² – 3x - 1) to represent the length and width of her patio.
Which expression represents the area (w) of Vanessa's patio?


a) 3x4-4x³-8x²-35x-10

b) 3x4+14x³+22x²+25x-10

c) 3x4-4x³+22x²+35x+10

d) 3x1+14x³+28x²+35x+10


I’m not really the best at math, my apologies. Thank you.

Answers

Answer:

a) 3x⁴-4x³-8x²-35x-10

Step-by-step explanation:

3x2(x²-3x-1)+5x(x²-3x-1)+10(x²-3x-1)

3x⁴-9x³-3x²+5x³-15x²-5x+10x²-30x-10

3x⁴-9x³+5x³-3x²-15x²+10x²-5x-30x-10

3x⁴-4x³-8x²-35x-10

The expression  3x⁴ + 11x³ - 15x² - 40x - 10 represents the area (w) of Vanessa's patio

What is Expression?

An expression is combination of variables, numbers and operators.

The area (w) of Vanessa's patio can be found by multiplying the length and width expressions:

w = (3x² + 5x + 10)(x² – 3x - 1)

Expanding this expression using the distributive property, we get:

w = 3x⁴ - 4x³ - 8x² + 15x³ - 25x² - 10x + 10x² - 30x - 10

Simplifying this expression, we get:

w = 3x⁴ + 11x³ - 15x² - 40x - 10

Hence, the expression  3x⁴ + 11x³ - 15x² - 40x - 10 represents the area (w) of Vanessa's patio

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Tyger buys his car for $6900 he spends some Time repairing it and improving it. He sells it for $9200. What is his percentage profit? ​

Answers

If Tyler sold his car for $9200, then the approximate percentage profit for this product is 33.3%.

How to calculate the percentage?

Final price - initial price

$9200 - $6900 = 2300

Calculate the percentage $2300 is equivalent to by using the information you already have.

6900 = 1002300 = xx= 100 x 2300/ 6900x= 33.3%

33.3% is the profit percentage.

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What is the inverse of f(x)=x^4+7 for x>0 where function g is the inverse of function f?
-

Answers

Answer:

[tex]g(x) = \sqrt[4]{x-7},~ x\geq 7[/tex]

Step by step explanation:

[tex]y= f(x) = x^4+7\\\\\text{Replace x with y and solve for y:}\\\\~~~~~~~x = y^4 +7\\\\\implies y^4 = x-7\\\\\implies y = \pm\sqrt[4]{x-7}\\\\ \implies f^{-1}(x) = \pm\sqrt[4]{x-7}[/tex]

When an apple is dropped from a tower 256 feet high, the function h(t) = -16t2 + 256 models
the height of the apple, in feet, after t seconds. Determine, algebraically, the number of second
it takes the apple to hit the ground.

Answers

The number of second it takes the apple to hit the ground is 4 seconds

To answer the question, we need to know what functions are

What are functions?

Functions are mathematical equations that show the relationship between two variables

Given that when an apple is dropped from a tower 256 feet high, the function h(t) = -16t² + 256 modelshe height of the apple, in feet, after t seconds.

Time it takes the apple to hit the ground

The time it takes the apple hits the ground is when h(t) = 0

So, h(t) = 0

-16t² + 256 = 0

-16t² = -256

t² = -256/-16

t² = 16

t = ±√16

t = ±4

Since t ≥ 0, t = 4 seconds

So, the number of second it takes the apple to hit the ground is 4 seconds

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If x^2+y^2=13 and xy=6 then find the value of x^4+y^4

Answers

Recall that (a + b)² = a² + 2ab + b².

Let a = x² and b = y². Then

(x² + y²)² = (x²)² + 2x²y² + (y²)²

⇒   x⁴ + y⁴ = (x² + y²)² - 2 (xy)²

Given that x² + y² = 13 and xy = 6, we have

x⁴ + y⁴ = 13² - 2×6² = 97

How do I solve this using Sin or Cosine law?

Answers

Those two have both two formulas but when dealing with a not-right triangle which is a particular case you use this formula for sines.

[tex]\frac{SinC}{c} =\frac{SinR}{r}[/tex]

Substitute

Note: the capital letters are for the angles and the small letter are for the sides.

But since we used side R and there is no angle to substitute. you will basically have to find it by adding the two angles given and subtracting it by 180, which is a 100.

[tex]\frac{Sin(7)}{1.9} =\frac{Sin100}{x}[/tex]

now you do the butterfly method or cross multiplication method.

[tex]xsin(7)=1.9sin(100)[/tex]

You have to isolate the x

[tex]\frac{xsin(7)}{sin(7)} =\frac{1.9sin(100)}{sin(7)}[/tex]

now cancel and plug the right side of the equation into your calculator and u get the answer for the missing side.

[tex]x= 15.35[/tex] or if u want to round it [tex]15.4[/tex]

<R = 100 and side CK= 15.35 or 15.4

Hope I helped! ^w^

TheOneAndOnlyLara~

In Walter's class, 14 of the 25 students ride the bus. In Sasha's class, 11 of the 20 students ride the bus. Which class has a greater percent of students who ride the bus?

Answers

The class which has a greater percent of students who ride the bus is Walter's class

How to find percentage?

Walter's class:

14 of the 25 students ride the bus

Percentage of students who ride bus = 14 / 15 × 100

= 0.933 × 100

= 93.3%

Sasha's class:

11 of the 20 students ride the bus

Percentage of students who ride bus = 11 / 20 × 100

= 0.55 × 20

= 55%

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help me help now !!!
I need the answer for question 2 now help!!

Answers

Answer:

10 degrees

Step-by-step explanation:

A straight line equals 180 degrees. We already know we have 110 degrees, so we subtract 180-110 and get 70. Now, we can set up an equation:

We have to isolate x, so divide both sides by 7

70=7x

_____  =  10=x

   7

x=10 degrees

Hope this helps!

A principal of $3900 is invested at 7.5% interest compounded annually how much will the investment be worth after 9 years

Answers

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3900\\ r=rate\to 7.5\%\to \frac{7.5}{100}\dotfill &0.075\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &9 \end{cases} \\\\\\ A=3900\left(1+\frac{0.075}{1}\right)^{1\cdot 9}\implies A=3900(1.075)^9\implies A\approx 7477.23[/tex]

Serena bought a video game on sale for $23.88. The original price was $44.69. How much
money did Serena save buying the game on sale?

Answers

Answer:

i just need points

Step-by-step explanation:

sorrry ehburbvuygvuywhefe2b yvfb we

The answer is $20.81 I used a calculator

please help me grades are do today

Answers

Answer:

28

Step-by-step explanation:

[tex]sin=\frac{opp}{hyp}[/tex]

[tex]cos = \frac{adj}{hyp}[/tex]

[tex]cos^{-1}\left(\frac{45}{51}\right)[/tex]

which is 28.07 degree

[tex]sin\left(28.07\right)=\frac{x}{51}[/tex]

x= 23.99

23.99+4=h=28

15% of what number is equal to 9

Answers

Answer:

9 is 15% of 60.

Step-by-step explanation:

[tex]\text{Formula}=\frac{\text{Number x 100}}{\text{Percent}} =\frac{9 \times100}{15} =60[/tex]

Following shows the steps on how to derive this formula and find out 15% of what number is 9.

Step 1: If 15% of a number is 9, then what is 100% of that number? Setup the equation.

[tex]\frac{9}{15} = \frac{Y}{100}[/tex]%

Step 2: Solve for Y

Using cross multiplication of two fractions, we get

[tex]15Y=6\times100\\15Y=600[/tex]

Y = [tex]\frac{600}{100} =60[/tex]

The requried 15% of 60 is equal to 9, as of the given percentage situation.

What is the percentage?

The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

Here,
To find the number that 15% of is equal to 9, we can set up a proportion:

15% of x = 9

Converting 15% to a decimal:

0.15x = 9

Dividing both sides by 0.15 gives:

x = 60

Therefore, 15% of 60 is equal to 9.

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A survey found that 3 out of 100 randomly selected people have red hair. How many people in a group of 12,000 randomly selected people are likely to have red hair?

Answers

Answer:

360 people out of 1200 are likely to have red hair.

Step-by-step explanation:

So I just saw that 100 x 120 equals 1200. So I just need to multiply 3 x 120 and I got 360. I think this is how to solve?

Can someone please help me its the second time im asking this

Answers

Answer:

see the attachment photo!

Olive has raised $3,428 to buy toothpaste to place in care packages. Each tube costs $2. Abut how many tubes of toothpaste can she buy? Choose the best estimate.

Answers

Answer:

I think the answer is 1,714 tubes

Step-by-step explanation:

What is the slope of the line y = x + 1?

Answers

Answer:

The slope of the line y = x + 1 is equal to 1.

General Formulas and Concepts:
Algebra I

Slope-Intercept Form:
[tex]\displaystyle y = mx + b[/tex]

m - slopeb - y-intercept

Step-by-step explanation:

Step 1: Define

Identify given equation.

[tex]\displaystyle y = x + 1[/tex]

Step 2: Find Slope m

Let's compare our given equation to the general equation Slope-Intercept Form to identify our values for slope m and y-intercept b:

Compare:
[tex]\displaystyle \begin{aligned}y & = mx + b \\y & = x + 1 \\\end{aligned}[/tex]

We can see that our y-intercept b is equal to 1. Let's rewrite our given expression:

Rewrite:
[tex]\displaystyle \begin{aligned}y & = mx + b \\y & = x + 1 \\& = (1)x + 1 \\\end{aligned}[/tex]

Here, we can identify our slope m to be 1.

∴ the slope of the given line is equal to 1.

___

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___

Topic: Algebra I

What is the area of the shape

Answers

The area of the shape is 180 square feet if the length of the diagonals are 20 and 18 ft respectively, option (a) is correct.

What is quadrilateral?

It is defined as the four-sided polygon in geometry having four edges and four corners. Two pairs of congruent sides, and it has one pair of opposite congruent angles.

We know the area of the kite = pq/2

Where p and q are the length of the diagonals

p = 10+10 = 20 ft

q = 7+11 = 18 ft

Area = (20×18)/2

Area = 180 square feet

Thus, the area of the shape is 180 square feet if the length of the diagonals are 20 and 18 ft respectively option (a) is correct.

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solve. -16 < 3x + 5 < 14

Answers

Answer: -7 < x < 3

Step-by-step explanation:

-21 < 3x < 9

-7 < x < 3

Translate the shape A four squares right and two squares up.
What are the coordinates of the vertices of the image?

Answers

If the shape A is translated four squares right and two squares up, the resulting coordinate point will be at (-3, 6), (-3, 3) and (-1, 3)

Translation of coordinates

Translation is a way of changing the position of an object on the xy plane

Given the coordinates of the vertices (1, 4), (1, 1), (3,1)

If the shape A is translated four squares right and two squares up, the resulting coordinate point will be at (-3, 6), (-3, 3) and (-1, 3)

Note that 4 was subtracted from the x-axis and 2 added to the y-coordinates.

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Help quick!

An unknown number is not equal to 4.98 but rounds to 4.98 when rounded to the nearest hundredth. Which of the following could be the unknown number?

4.999
4.992
4.986
4.984

Answers

Answer:

the answer is  4.979

Step-by-step explanation:

Answer:

The answer is 4.979

Step-by-step explanation:

Please help me, greatly appreciate it!

Answers

Answer: See the screenshots below

I'm answering in this format because the questions aren't numbered, so its hard to reference them consistently (so we're both on the same page).

All decimal values are approximate. I decided to round to 4 decimal places, but feel free to use another level of precision.

Peter built a chest that measures 2 feet by 11
2
feet by 1 foot. He wants to fill the chest with plastic coins.

A prism has a length of 2 feet, height of 1 foot, and width of 1 and one-half feet.

What is the maximum amount of space that the chest can hold?
The maximum amount of space is
cubic feet.

Answers

Answer:

3

Step-by-step explanation:

got it on edge

John borrowed $ from bank for 3 years at a rate of 10%
a) Find the simple interest
b) Find the the total amount paid​

Answers

Given:P= $12500R= 10%T= 3 yearsNote that:P= Principal amount R= Rate of interest T= Time period To find:The simple interestThe total amount paidSolution:

[tex]\large\boxed{Formula: I= \frac{PRT}{100}}[/tex]

First, we'll have to multiply, principal amount (12500), rate (10) and time period (3).

[tex]12500×10×3[/tex]

[tex]=375000[/tex]

Now, we'll have to divide the amount (375000) by 100.

[tex]\frac{375000}{100}[/tex]

I=$3750

Now, we can find the total amount paid.

[tex]\large\boxed{A=SI+P}[/tex]

Let's substitute according to the formula.

[tex]A=3750+12500[/tex]

A=$16250

Therefore, simple interest is $3750 and $16250 was paid in total.

When surveyed, the ratio of students who preferred Science class to English class was 5:4. If 90 students were surveyed, how many students chose Science?​

Answers

50 students preferred science...

Explanation:

we can consider the numbers 5 and 4 in the ratio as units

now we need to know how much each unit represent

units = 5 + 4 = 9

my sample = 90 students

each unit = 90/9 = 10 students

so each unit represents 10 students

back to the ratio

who preferred science = 5

who preferred English = 4

Number of students choose Science = 5 * 10 = 50

If the sales tax rate is 9.75 % in California, then how much would you pay in Los Angeles for a pair of shoes that cost $39.00?

Answers

Answer:

$42.80

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 9.75%/100 = 0.0975 per year.

Solving our equation:

A = 39(1 + (0.0975 × 1)) = 42.8025

A = $42.80

The total amount accrued, principal plus interest, from simple interest on a principal of $39.00 at a rate of 9.75% per year for 1 years is $42.80.

Answer:

Sales tax is $3.8.  So total would be 39.00+3.8= $42.8

Step-by-step explanation:

I would really appreciate it if someone helped answer these 4 questions. I will rate 5 stars. Thank you (:

Answers

Answer:

7. 13.6

8. 19.5

9. 6.5

10. 12.6

Step-by-step explanation:

Recall the three main trig functions

Sine = opposite / hypotenuse

Cosine = adjacent / hypotenuse

Tangent = opposite / adjacent

( remember hypotenuse = longest side length , opposite = side length opposite of angle , and adjacent = side length thats not the opposite or hypotenuse )

We will use these to solve each problem

7.

We are given :

An angle with a measure of 39 degreesThe angles opposite side length The adjacent side as the unknown

When dealing with opposite and adjacent we use tangent

We have tan = opp / adj

==> plug in opp = 11 and adj = x as well as given angle 39

tan(39) = 11/x

==> multiply both sides by x

xtan(39) = 11

divide both sides by tan(39)

x = 11/tan(39)

plugging this into a calculator , we get x = 13.6 ( rounded )

8.

We are given :

an angle with a measure of 46 degreesthe hypotenuse which has a length of 28and the adjacent as the unknown

When dealing with adjacent and hypotenuse we use cos

We have cos = adj / hyp

==> plug in given angle 46 , adj = x and hyp = 28

cos(46) = x/28

==> multiply both sides by 28

x = 28cos(46)

plugging this into a calculator we get  x = 19.5 ( rounded )

9.

We are given :

an angle with a measure of 51 degreesits opposite side length with a length of 8 the adjacent side length as the unknown

When dealing with the opposite and adjacent we use tangent

We have tan = opp / adj

==> plug in 51 degrees for angle , opp = 8 and adj = x

tan(51) = 8/x

==> multiply both sides by x

xtan(51) = 8

==> divide both sides by tan(51)

x=8/tan51

plugging this into a calculator we get that x = 6.5 ( rounded )

10.

We are given:

an angle with a measure of 24 degreesthe hypotenuse which has a length of 31the side length opposite of given angle as the unknown

When dealing with the opposite and hypotenuse we use sine

We have sin = opp / hyp

==> plug in angle as 24 , opp = x and hyp = 31

sin(24) = x / 31

==> multiply both sides by 31

31sin(24) = x

plugging this into a calculator we get that x = 12.6 ( rounded )

And we are done!

Let me know if you have any doubts in the comments ! : )

Solving for interior angle measures, what is the m

Answers

Using the triangle sum theorem, the value of angle ACB in the triangle is: B. 50°.

What is the Triangle Sum Theorem?

According to the triangle sum theorem, the sum of all the angles in a triangle equals 180 degrees.

90 + 7x - 20 + 4x = 180

70 + 11x = 180

11x = 180 - 70

11x = 110

11x/11 = 110/11

x = 10

m∠ACB = 7x - 20

Plug in the value of x

m∠ACB = 7(10) - 20

m∠ACB = 50° (option B).

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