how many radians is -135°? -1/4pie 3/4pie -3/4pie -4/3pie

Answer:

it should be 4x^3 y-4xy^2+xy+3x^2

Step-by-step explanation:

Answer:

132(X) + 64(2X) = $1040.00

Step-by-step explanation:

equations

solution

a. It usually works well to let a variable represent the quantity the problem statement is asking you to find. I like to choose variable names that help me remember what the variable stands for. (x and y rarely do that) So, let's choose "a" for the cost of an adult ticket, and "s" for the cost of a student ticket.

The equations express the relationships described by the problem statement. The first relationship expresses the total revenue in terms of the numbers of tickets sold. You know that multiplying the number of tickets by the cost of the ticket will give the revenue from sales of that ticket. So, the total revenue is ...

... 64a +132s = 1040

The problem statement also tells you the relationship between the costs. An adult ticket is twice the cost of a student ticket, so ...

... a = 2s

These equations are your system of linear equations.

_____

b. The solution can be found using substitution. Since the second equation gives an expression for "a", we can use that in the first equation.

... 64(2s) +132s = 1040

... 260s = 1040 . . . . . . . . simplify

... 1040/260 = s = 4

... a = 2s = 2·4 = 8

An adult ticket costs $8; a student ticket costs $4.

600 m

The slope between 1 minute and 2 minutes is ...

... (800 -500)/(2 -1) = 300 . . . . . . m/min

Thus in 20 seconds, 1/3 minute, Jason will fall ...

... (1/3 min)·(300 m/min) = 100 m

This distance is in addition to the 500 m he has already fallen in the first minute.

In 1 min 20 sec, Jason falls 500 m + 100 m = 600 m.

_____

Comment on the graph

We don't expect Jason's rate of fall to change dramatically at the 2-minute mark. We suspect the last point should be (2 2/3, 1000).

Answer:

(A) The number of bacteria is originally 300 and increases by 30% every hour

Step-by-step explanation:

I am assuming the function should actually read:

[tex]N(t)=300\cdot 1.30^t[/tex]

(i.e., there should be a "t" in the exponent. if this is not the case please disregard my answer).

According to the above exponential function, the initial amount 300 grows as (1+0.3)*300=300+0.3*300. In other words it increases by 30% every hour (t).

Your answer choice (A) is likely a candidate, except I am missing "every hour" at the end (again, am assuming this was omitted by mistake)

Final answer:

The function N(t)=300(1.30)^t represents the bacterial growth model where the initial amount of bacteria is 300 and increases by 30% every hour.

Explanation:

Looking at the function N(t)=300(1.30)^t, this model describes the number of bacteria, N, after t hours. The base number, 300, indicates the initial quantity of bacteria, while the term (1.30)^t suggests that the population changes by a factor of 1.30 each hour, reflecting a 30% increase in the number of bacteria each hour. Therefore, the correct statement that interprets this model is:

A. The number of bacteria is originally 300 and increases by 30% each hour.

The equation 15x + 8y = 56 can be rewritten in slope-intercept form (y = mx + b) as y = -15/8x + 7, where -15/8 is the slope and 7 is the y-intercept.

To convert the equation 15x + 8y = 56 into slope-intercept form (y = mx + b), we want to isolate y. Here are the steps:

In this equation, -15/8 is the slope, and 7 is the y-intercept. This means the line intersects the y-axis at y = 7, and for every 8 units increase in x, there is a 15 unit decrease in y, as the slope is negative.

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Answer:

$3.46

Step-by-step explanation:

Unpaid February balance = $345.67

Annual Percentage Rate(APR) = 13.99 %

                                                  = [tex]\frac{13.99}{100}[/tex]

                                                  = 0.1399 (converted into decimal)

Periodic (monthly) interest rate = [tex]\frac{0.1399}{12}[/tex]  (since there are 12 months in a year)

                                                    = 0.01

Interest he owes on his unpaid February balance of $345.67

       = Periodic (monthly) interest rate * unpaid February balance

       = 0.01 * 345.67

       = 3.456

       = $3.46     (rounded off to the hundredth place)

B. mx−y=−b

Start with ...

... y = mx +b

Subtract mx.

... -mx +y = b

You want the leading coefficient positive, so multiply by -1.

... mx -y = -b . . . . matches selection B

Answer: B. mx−y=−b

Step-by-step explanation:

The equation of a line in standard form is given by :-

[tex]Ax+By=C[/tex]

, where A is a positive integer , B and C are integers.

The given equation : [tex]y = mx + b[/tex]

, where m is a positive integer.

The convert it into standard form , we subtract y and b from both sides , we get

[tex]y -y-b= mx + b-y-b[/tex]

Simplify,

[tex]-b= mx -y[/tex]

Or we can write it as [tex] mx -y=-b[/tex] → Standard form.

Thus , the equation of line in standard form = [tex] mx -y=-b[/tex] , where m is a positive integer.

Hence, the correct answer is B. mx−y=−b

Answer:

-1,81

Step-by-step explanation:

Multiplicity of a number can be written as power

for example

-1(multiplicity 3) can be written as

[tex]-1^{3}[/tex]= -1

similiarly 3(multiplicity 4) can be written as

[tex]3^{4}[/tex]=81

The eleventh-degree polynomial (x + 3)4(x – 2)7 has the same zeroes as did the quadratic, but in this case, the x = –3 solution has multiplicity 4 because the factor (x + 3) occurs four times (that is, the factor is raised to the fourth power) and the x = 2 solution has multiplicity 7 because the factor (x – 2) occurs ... Can you do the rest on your own?

Answer:

[tex]y= \frac{1}{28} x^2[/tex]

Step-by-step explanation:

A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror.

The pipe is located 7 inches from the vertex of the mirror.

The parabola is open upwards . the vertex of the parabola is (0,0)

and pipe is located 7 inches from the vertex (0,0)

7 inches is the focus of the mirror

The distance between the vertex and the focus = 7

Since parabola is upwards and vertex is (0,0) we use formula

[tex]4py = x^2[/tex]

Where p is the distance between the vertex and focus

p = 7 we know

[tex]4*7*y = x^2[/tex]

[tex]28y = x^2[/tex]

Now isolate y by dividing 28 on both sides

[tex]y= \frac{1}{28} x^2[/tex]

Answer:

c. 12x − 24 = 60

Step-by-step explanation:

x is the number of boxes Krys bought.

12x is the number of pastries in those boxes. 2·12 = 24 is the number of pastries in the boxes Krys kept for herself. Then the number of pastries Krys brought to the party is ....

... 12x -24

We are told that number is 60, so we can use this equation to find x:

... 12x -24 = 60

Answer:

Option C : 12x − 24 =60

Step-by-step explanation:

Given :

Krys bought x boxes of pastries to bring to a party.

Each box contains 12 pastries.

She decides to keep two boxes for herself.

She brings 60 pastries to the party.

To Find : Equation can be used to find the number of boxes, x, Krys bought.

Solution :

Krys bought x boxes of pastries .

Each box contains 12 pastries.

So, total pastries she bought = 12 x

She decides to keep two boxes for herself.

Since 1 box contain 12 pastries .

Thus two box contains pastries = 12*2 =24 pastries

Now total pastries she bought is 12 x . Out of which she decides to keep 24 pastries . after keeping 24 pastries from 12 x pastries she bought 60 pastries to the party i.e.

⇒ 12 x - 24 = 60

Thus,Equation can be used to find the number of boxes, x, Krys bought:

12 x - 24 = 60

Hence Option C is correct .

Answer:

C. 1,-1

Step-by-step explanation:

The sum of the coefficient is 0 so x=1 is a root and (x-1) as a factor

so x^4+3x^3+3x^2-3X-4=(x-1)(x^3+4x^2+7x+4)

and the root of that is x=-1 and the factor is (x+1)

SO the answer is: x=1 and x=-1

Answer: -1, 1

Step-by-step explanation:

To solve the polynomial equation x^4 + 3x^3 + 3x^2 - 3x - 4 = 0, do a quick test of polynomials using 1 and -1 in place of x.

This gives the sum of coefficients as zero

Testing with 1: 1 + 3 + 3 - 3 - 4 = 0

Testing with -1: 1 + (-3) + 3 - (-3) - 4

= 1 - 3 + 3 + 3 - 4 = 0

This gives that both (x + 1) and (x - 1) are roots.

(x + 1)(x - 1) = x² - 1 {difference of two squares}

Dividing the polynomial x^4 + 3x^3 + 3x^2 - 3x - 4 by (x² - 1) results in x² - 3x + 4 as quotient. Factorizing this result would give complex roots.

Therefore, x² - 1 = 0

x² = 1

Taking square of both sides of the equation gives

x = ± 1

1 and -1 are the rational roots to the polynomial.

-7 = 7d - 8

Add 8 to both sides.

1 = 7d

Divide both sides by 7.

Answer:

4^x+1

Step-by-step explanation:

because i got it wrong

Answer:

[tex]y= 4^{x+1}[/tex]

Step-by-step explanation:

Answer:

Each hiker gets [tex]\frac{7}{3}[/tex]  cups of mixed nuts.

Step-by-step explanation:

First, we need to find the total amount of cups by multiplying the number of bags with the amount of cups in each bag:

8 * 3.5 = 28

Now, we divide this by 12 to find the amount of cups per hiker:

28 ÷ 12 = [tex]\frac{7}{3}[/tex] or 2.3333

So each hiker gets  [tex]\frac{7}{3}[/tex]  cups of mixed nuts.

Answer:

Mean score for the students = 593.3

Step-by-step explanation:

Name    Score

Julia      650

Andrew 550

Jason    380

Cathy     720

Jessica   710

Robert    550

1) Mean Score = [tex]\frac{Sum of the scores}{Total number of students}[/tex]

= [tex]\frac{650+550+380+720+710+550}{6}[/tex]

= 593.33

2) Upon rounding off to the nearest tenth, we get

Mean Score = 593.3 (since the hundredth digit is lesser than 5, the tenth digit is not increased)

Answer:

593.3

Step-by-step explanation:

Assuming random sample, assuming "point estimate of mean score" means "estimate of mean score in points",

(650+550+380+720+710+550)/6 is 593.3

Sample size 6 population size 25 is irrelevant except to note estimate might not be very good.

Answer:

D) 15

Step-by-step explanation:

We know the formula for direct variation is

y=kx

Substituting y=5 and x=4 we can calculate k

5=k4

Divide each side by 4

5/4 =k

Now y= 5/4 x

If x =12

y =5/4*12

y = 15

Answer:

Show ΔBCD ≅ ΔGFE, so ∠C ≅ ∠F. Base angle of an isosceles triangle are congruent, so ΔACF is isosceles.

Step-by-step explanation:

Informally, subtract DE from CE and DF. This will show CD ≅ EF.

Then ΔBCD ≅ ΔGFE by the HL theorem for right triangles.

Corresponding parts of congruent triangles are congruent, namely the angles C and F.

Since base angles of ΔACF are congruent, it is isosceles.

x² + y² = 50

The circle centered at (h, k) with radius r has equation ...

... (x -h)² + (y -k)² = r²

You have (h, k) = (0, 0), so all we need to do is find r². We can do that by choosing r² so that the equation is true at the given point.

... x² + y² = (5)² + (-5)² = 25 + 25 = 50

Your equation is x² + y² = 50.

Answer:

6/x weeks

Hope this helps

Answer:

6/x weeks

Step-by-step explanation:

This is the correct answer, credits to the other person who answered.

Answer:

∠ABC ≅ ∠XYZ

Step-by-step explanation:

Given: ΔABC is similar to ΔXYZ.

If two triangles are similar, then

1. the corresponding angles are congruent

2. the corresponding sides are proportional

From the options given,

AB ≅ XY is not applicable for similar triangles. Hence the option is wrong.

∠ABC ≅ ∠XYZ since  ΔABC ≅ ΔXYZ

Hence the answer is ∠ABC ≅ ∠XYZ

Answer:

42.5

Step-by-step explanation:

76.8% × ? = 32.64

? =

32.64 ÷ 76.8% =

32.64 ÷ (76.8 ÷ 100) =

(100 × 32.64) ÷ 76.8 =

3,264 ÷ 76.8 =

42.5

To solve for the number that 76.8% of it equals 32.64, you can write an equation and solve for x: 0.768 * x = 32.64. Dividing both sides by 0.768 gives x = 42.5.

The question asks about a percentage of a number, which is a math concept. If 76.8% of a number equals 32.64, you can use basic algebra to find that number. Let's call it 'x'. You can write it as an equation: 0.768 * x = 32.64. Solving for x, divide both sides of the equation by 0.768.

x = 32.64 /0.768

When you perform this calculation, you'll find that x is approximately 42.5. So, 76.8% of 42.5 is approximately 32.64.

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Answer:

7x^2y(x +2xy^2 -y)

Step-by-step explanation:

7, x^2, and y are factors of every term, so we can start by factoring those out.

... = 7x^2y(x +2xy^2 -y)

The trinomial does not factor further, so this is it.

Answer:

7x^2y(x +2xy^2 -y)

Step-by-step explanation:

7x^3y +14x^2y^3 − 7x^2y^2

WE find out GCF

7x^3y= 7*x*x*x*y

14x^2y^3= 7*2*x*x*y*y*y

7x^2y^2 = 7 *x*x*y*y

GCF is 7x^2y

Factor out GCF from the given expression. when we factor out 7x^2y we divide each term by GCF. we put GCF 7x^2y outside

7x^2y(x +2xy^2 -y)

Since QC and BR are parallel, triangles CDQ and BDR are similar.

This means that corresponding sides are in proportion, so we have

[tex] BD \div QD = RD \div CD [/tex]

Substituting numbers, we have

[tex] 26+39 \div 39 = 18+x \div x \iff \dfrac{65}{39} = \dfrac{18+x}{x} [/tex]

Multiply both sides by [tex] 39x [/tex]

[tex] 65x = 39(18+x) [/tex]

Expand right hand side:

[tex] 65x = 702 + 39x [/tex]

Subtract 39x from both sides:

[tex] 26x = 702 [/tex]

Divide both sides by 26

[tex] x = \dfrac{702}{26} = 27 [/tex]

Just took the test and got the the correct answer *\(♡°▽°♡)/*

Look at the image down below!!

Neither one

Frog A's "unit rate" is ...

... (8 flies)/(4 minutes) = 2 flies/minute

Frog B's "unit rate" is ...

... (14 flies)/(7 minutes) = 2 flies/minute

Both rates are the same. Each frog eats 2 flies per minute.

Answer:

i dont like frogs

Step-by-step explanation:

Answer:

Point

Step-by-step explanation:

If you are referring to geometry

Answer:

i think it is true and true

Step-by-step explanation:

Answer:

35. False

36. True

Step-by-step explanation:

35. [tex]-3\:<\:-2[/tex]

On the number line [tex]-3[/tex] is to the left of [tex]-2[/tex].

Therefore [tex]-3[/tex] is not greater than [tex]-2[/tex].

[tex]-3[/tex] is rather less than [tex]-2[/tex].

36. [tex]y\leq 3[/tex] includes three as a possible solution.

The reason is that, the inequality contains an equal sign in it, the boundary is also inclusive, therefore 3 is itself a possible solution.

In order words, the statement

[tex]3\leq3[/tex] is a truth statement.

Answer:

6 cm,12 cm,8 cm

Step-by-step explanation:

add the perimeter of the first triangle to get 65

then divide 65 by 26 to get 2.5

then divide all the side lengths by 2.5

15/2.5=6

20/2.5=8

30/2.5=12

The lengths of the sides of a similar triangle that has a perimeter of 26 cm are 6 cm, 8 cm, and 12 cm and this can be determined by using the given data.

Given :

The lengths of the sides of a triangle are 15 cm, 20 cm, 30 cm.

The following steps can be used in order to determine the lengths of the sides of a similar triangle that has a perimeter of 26 cm:

Step 1 - The formula of the perimeter of the triangle is given below:

[tex]\rm P = a + b + c[/tex]

where a, b, and c are the length of the sides of the triangle.

Step 2 - Now, determine the perimeter of the triangle whose sides are 15 cm, 20 cm, 30 cm.

P' = 15 + 20 + 30

P' = 65 cm

Step 3 - Now, divide both the perimeters of the triangles, that is:

[tex]=\dfrac{65}{26}[/tex]

= 2.5

Step 4 - So, the side length of the sides of a similar triangle is given below:

[tex]\rm \dfrac{15}{2.5} = 6\;cm[/tex]

[tex]\rm \dfrac{20}{2.5}=8 \;cm[/tex]

[tex]\rm \dfrac{30}{2.5}=12\;cm[/tex]

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Answer:

The correct option is A. The height of tree is 60 ft.

Step-by-step explanation:

From the given figure it is noticed that the building is creating a right angle triangle from a point and the tree divides the hypotenuse and base in two equal part.

According to midpoint theorem of triangle: In a triangle, if a line segment connecting the midpoints of two sides, then the line is parallel to third side. The length of line segment is half of the length of third side.

Using midpoint theorem of triangle, we can say that the length of tree is half of the building.

[tex]Tree=\frac{1}{2}\times Building[/tex]

[tex]Tree=\frac{1}{2}\times 120[/tex]

[tex]Tree=60[/tex]

Therefore correct option is A. The height of tree is 60 ft.