What is the value of 3x+34

Answer:

c

Step-by-step explanation:

took the test

D

2x – 3

× x + 4

2x × x = 2x²

-3 × 4 = -12

Answer:

Raise both sides of the equation to the power of 2

Raise both sides of the equation to the power of 2 again

Simplify to get a quadratic equation.

Use the quadratic formula to find the values of x.

Step-by-step explanation:

The radical equation is expressed as:

[tex]\sqrt{x+3} - \sqrt{2x-1} = -2[/tex]

The following steps are to be followed to calculate x:

Step 1: Raise both sides of the equation to the power of 2.

[tex](\sqrt{x+3} - \sqrt{2x-1})^2 = (-2)^2\\x+3 - 2\sqrt{x+3}\sqrt{2x-1}+(2x-1) = 4\\ - 2\sqrt{x+3}\sqrt{2x-1}+x+3+2x-1 = 4\\ - 2\sqrt{x+3}\sqrt{2x-1}+3x+2 = 4\\ - 2\sqrt{x+3}\sqrt{2x-1} +3x-2 = 0\\[/tex]

Step 2: Raise both sides of the equation to the power of 2 again

[tex](-2\sqrt{x+3}\sqrt{2x-1})^2 = (2-3x)^2\\4(x+3)(2x-1) = (2-3x)^2\\[/tex]

Step 3: Simplify to get a quadratic equation.

[tex]\\4(2x^2-x+6x-3) = 4-12x+9x^2\\4(2x^2+5x-3) = 4-12x+9x^2\\8x^2+20x-12 = 4-12x+9x^2\\x^2-32x+16 = 0[/tex]

Step 4: Use the quadratic formula to find the values of x.

x = 32±√32²-4(16)/2

The number of hours that Sam spends walking is 1 hour. And the number of hours that Sam spends biking is 2 hours.

We know that the speed formula

Speed = Distance/Time

Let 'x' and 'y' be the time when he walks and when he biking. Then the equations are given as,

x + y = 3                    ...1

4x + 12y = 20           ...2

From equations 1 and 2, then we have

4(3 - y) + 12y = 20

12 - 4y + 12y = 20

8y =  8

y = 1 hour

The value of 'x' is calculated as,

x + 1 = 3

x = 2 hours

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Answer:

f(t)=(2)/(3)*\cos (4t-3\pi )

Step-by-step explanation:

Because :D

Answer:

f(t) = 2/3 sin (1/3t - 2pi/3) - 2

Step-by-step explanation:

Answer:

No estoy seguro, intenta preguntarle a tu profesor

Step-by-step explanation:

Every fraction with a non-zero denominator or divisor is a rational number.

"A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator 'p' and a non-zero denominator 'q'."

Given, a fraction has a non-zero denominator.

Therefore, the fraction is a rational number for any possible case.

An integer itself a rational number.

A decimal number is always a rational number.

A quotient is the result of dividing one number with the another.

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Answer:

Step-by-step explanation:

We want to find the height between the helicopter and the submarine

let us use the water as reference

therefore the given information

helicopter= 100 feet about sea level.

submarine = 250 feet below the sea level.

Therefore the distance between the helicopter and the submarine is given as

=100+250

=350feet

answer: 16

step by step explanation:

The total number of marbles = 32 marbles.

We have ratio of the number of marbles in the red bag to the number in the blue bag is 3 : 5. After that, two marbles are moved from the blue bag to the red bag, making the ratio 7 : 9.

We have to find out how many marbles are there in total.

Yes, a:b equals to [tex]\frac{a}{b}[/tex] - where ' a ' is called Antecedent and ' b ' is called Consequent.

Let the total number of marbles be x.

Let the number of marbles in the red bag be ' x ' and in blue bag ' y '.

According to question -

[tex]\frac{x}{y} =\frac{3}{5}[/tex]

5x = 3y

x = [tex]\frac{3y}{5}[/tex]

After the two marbles are moved from blue bag are moved into the red bag, then -

[tex]\frac{x+2}{y-2} =\frac{7}{9}[/tex]

9(x + 2) = 7(y - 2)

9x + 18 = 7y - 14

9x - 7y = -32

9 ([tex]\frac{3y}{5}[/tex]) - 7y = -32

[tex]\frac{27y}{5} - 7y =-32[/tex]

[tex]\frac{-8y}{5}=-32[/tex]

-8y = -32 x 5

y = 4 x 5

y = 20

Therefore -

x = [tex]\frac{3\times20}{5}[/tex] = 12

Hence, the total number of marbles = x + y = 20 + 12 = 32 marbles.

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Answer:

–2k3 – 3k2 – 1.3k

Step-by-step explanation:

Hope this helped, Have an amazing day!!

Answer:

its C (what the guy said above)

Step-by-step explanation:

Using the knowledge of the total sum of the internal angles of a triangle, the value of x would be 25

Recall :

Hence,

(x + 15) + (3x - 35) + 4x = 180

x + 15 + 3x - 35 + 4x = 180

8x - 20 = 180

8x = 180 + 20

8x = 200

x = 200 / 8

x = 25°

Therefore, the value of x is 25

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Answer:

A

Step-by-step explanation:

A function cannot have 2 points on the same x point, and so every coordinate on A's set is different (-1, 2, 8, 10)

Answer:In other words, the slopes of parallel lines are equal. Note that two lines are parallel if their slopes are equal and they have different y-intercepts. In other words, perpendicular slopes are negative reciprocals of each other.

Step-by-step explanation:

The slopes of two parallel lines are always equal.

The slope of a line can be calculated by taking the tangent ratio of the angle formed by it with the x axis.

The angle between two parallel lines is zero.

It implies that they form same angle with the x-axis.

Since, the slope of a line is define as the tangent of the angle made by it with x axis.

The slopes of the parallel lines will be equal.

Suppose the slopes of two parallel lines are m₁ and m₂.

Then, it can be written as m₁ = m₂.

Hence, the relationship between the slopes of two parallel lines can be written as m₁ = m₂.

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Step-by-step explanation:

Given data

cost of 12 bottle = $9

How many bottle can $3 buy.

Given that $9 can buy 12 bottles

therefore $3 would by x bottles

cross multiply we have

9x=12*3

9x=36

divide both sides be 9

x=36/9

x=4 bottles

The cost per bottle is

9/12= $3/4

= $0.75 per bottle

if one bottle cost $0.75

the 7 bottles will cost =0.75*7

=$5.25

Answer:

4

Step-by-step expl

Since 12 bottles cost $9 then by doing

12/3=X

X=4

=$4

Answer:

4/10 x 10 = 40/100

Step-by-step explanation:

I have done this one before.

I hope this helps!

Answer:

4/10 x 10 = 40/100

Step-by-step explanation:

I had  queation today

Answer:

Position s(t) = -16t² + 1250 ft

Step-by-step explanation:

Given that:

initial height h₀ = 1250 feet

and suppose the position  function is given as:

-16t² + v₀t + h₀

here;

v₀ = initial velocity

t = time

Thus, the position formula can be expressed as:

Position s(t) = -16t² + 1250 ft because v₀ = 0 ft/s and h₀ = 1250 feet

Answer:

Next to 6 is 9, next to 15 is 27, and next to 3 is 5

Step-by-step explanation:

If you imagine 6 photos for every 2 minutes as a fraction and simplify it, the answer to this would be 3 photos for every 1 minute (basically 3/1). By using this unit fraction, you'll see that you're supposed multiply the amount of minutes by 3, or you can divide the # of photos by 3.

For 3 mins, you multiply that by 3 to get 9 photos.

For 9 mins, you multiply that by 3 to get 27 photos

For 15 photos, you divide that by 3 to get 5 photos.

Ok, have a Spooky Halloween!

Answer:

[tex](a + 1) ^{2} + 1[/tex]

[tex]a ^{2} + 2a + 2[/tex]

Answer:

you can make 1/3 glass of lemonade but if you are saying it without fractions its zero

Step-by-step explanation:

4 times 3 is 12 so if you just have 4 cups than thats 1/3 of a cup

Answer:

4$ off every time because if you take 6×11 you get 66 from the total without anything off and then subtract 66-46 and you get 20 so you take 20÷ 5 because 1 round was his first and there was no discount on the first round so your answer is 4$ everytime

Answer:

350 6th grade students

Step-by-step explanation:

From the question

At a school, 60% of the sixth-grade students said that hip-hop is their favorite kind of music.

Total number of sixth graders that love hip-hop = 210

Let the total number of students in the school be represented as: x

Hence,

60% × x = 210

60/100 × x = 210

Cross Multiply

60x = 210 × 100

x = 210× 100/60

x = 350 students.

Therefore, the total number of sixth graders is 350 .

Answer:

A =37

Step-by-step explanation:

Because you should just do the 32 + 5 since it is equal to A therefore, whatever the answer is should be what A is equal to. So: 30 + 2 + 5 = 37.

Intro:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

This is the slope formula [tex]y=mx+b[/tex] if you know what each letter stands for you know which one is slope.

Each Letter Meanings:

y stands for the y-value in the order pairs on the line.

m stands for the rate of change, AKA the slope of the line.

x stands for the x-value in the order pairs on the line.

b stands for the y-intercept.

_________________________________________________________

So now you should have figured out that [tex]\frac{1}{3}[/tex] is the slope of the line.

Answer:

slope is 1/3

first point y intercept is 1/7

its a non linear function

(-3/7,0) (0,1/7)

Step-by-step explanation:

Answer:

-0,15

Step-by-step explanation:

I think that's it, I'll give an explanation in the comments in a sec

Answer:

x=28

Step-by-step explanation:

4/28=k so 1/7=k

Answer:

Step-by-step explanation:

a). This graph represents a function with square root of x,

    f(x) = [tex]\sqrt{x}[/tex]

b). This graph represents the reciprocal squared function with asymptotes as,

    Vertical asymptote x = 0

    Horizontal asymptote y = 0

    f(x) = [tex]\frac{1}{x^2}[/tex]

c). This graph represents a linear function (Straight line),

    f(x) = x

d). This graph represents the cubic function,

    f(x) = x³

Answer:

Step-by-step explanation:

1 x square rooted

2 1/x^2

3 x

4 x^2

Answer:

not factorable

Step-by-step explanation:

To factor a trinomial of the type x^2 + ax + b, you need to find two numbers that add to a and multiply to b.

You have 1x^2 + 9x + 2.

In this case, a = 9 and b = 2.

There are no two integers whose sum is 9 and whose product is 2, so this trinomial is not factorable.

Answer: The distance between 15 yards to 18 yards is 3 yards.

Step-by-step explanation:

Answer:

(x+1)²

(m-n)²

Step-by-step explanation: