PLZZZZZZZZ HELP WILLL MARK BRAILIEST

Answer:

permutation

Step-by-step explanation:

The permutation refers to the arrangement of a people, person, number, colors, alphabets or any other thing

While on the other hand the combination refers to the selection or choosing  a particular thing like - clothing, menu, subjects, etc

But in the given question it asks for the number of ways can different students be selected so its a case of permutation and the same is to be considered

Answer: The value of x = 1.

Step-by-step explanation: I only inputted the answer as you said. Hope this helps!

Answer:

1

Step-by-step explanation:

(2x1) +1 = 3

x=1

Answer:

Her grocery bill is $4.62

Step-by-step explanation:

The first step is to multiply 6 and .43 to get how much it was for all of the apples.

Then the next step is to do the same thing with the oranges.

Then the last step is to add the two together.

Answer:

$4.62

Step-by-step explanation:

Answer:

The answer is 72 degrees Z is also 180 by the way

Step-by-step explanation:

A straight line is 180 so subtract 108 and you will get the angle 72 degrees

Answer:

Step-by-step explanation:

Since Angle BCD is parallel to EDC, it means they both equal 108 degree. So x = 108

the supplementary angle for 108 is 72 degree, which means Angle c = Angle y, so angle y = 72 degrees.

all angles in a triangle = 360, so use the formula to find out what angle z is

360 = 72 + 72 + z

360 = 144 + z

360 - 144 = z

216 = z

Answer:

(6,5)

Step-by-step explanation:

The ordered pair is ( x,y)

The ordered pairs in the table are

(3,4)  (4,4)  (5,2) and (6,5)

Answer:

The answer is option D.

I hope this helps.

Answer:

y = 2/7x +11

3x-4y = -24

Step-by-step explanation:

We would want to use substitute on the last set of equations since the first equation is already solved for y.  It is easy to substitute for y in the second equation

Answer:

Step-by-step explanation:

The graph of this function is that of a parabola that opens down (due to the negative coefficient of t^2).  The axis of symmetry is

        -b          -100

x = --------- = ----------- = 50/16 = 25/8.

        2a        2(-16)

The y value of the vertex is h(25/8) = -16(25/8)^2 + 100(25/8) + 10, or 166/25.

The largest value this function can take on is 166/25.  Thus, the range is

(-infinity, 166/25).

Since the given function is a polynomial, the domain consists of all real numbers.

Answer:

a^2+a-6

Step-by-step explanation:

(a+3)(a-2)

a^2-2a+3a-6

a^2+a-6

Hope this helps ;) ❤❤❤

Answer:

Step-by-step explanation:

[tex](a + 3)(a - 2)[/tex]

Multiply the second parentheses by each term from the first parentheses

[tex] = a(a - 2) + 3(a - 2)[/tex]

Distribute ' a ' through the parentheses

[tex] = {a}^{2} - 2a + 3(a - 2)[/tex]

Distribute 3 through the parentheses

[tex] = {a}^{2} - 2a + 3a - 6[/tex]

Collect like terms

[tex] = {a}^{2} + a - 6[/tex]

Hope this helps..

Best regards!!

Answer:

c

Step-by-step explanation:

i took this test yesterday

i promise its right

Answer:

B

Step-by-step explanation:

Last year local amusement park received 286758 visitors.

Park was open for every day except 7 holidays means park was open for (365 - 7) = 358 days

Now average numbers of visitors per day =

                                                                    =

                                                                    = 801

Answer:

v=20, w=80

Step-by-step explanation:

First, we can find v by determining that angle 5v and angle 4v and supplementary to each other. This means that their sum adds up to 180 degrees.

5v + 4v=180

9v=180

v=20

We also know 4v is equivalent to w.

4(20)=w

w=80

Answer:

Step-by-step explanation:

5v + 4v = 180   {co-interior angles}

9v = 180

v = 180/9

v = 20

Angles opposite to equal sides are equal.

So, w = 4v

      w = 4*20

      w = 80

Answer:

Answer:

The y in the second equation

Step-by-step explanation:

hope this helps

Answer:

270 ft square

Step-by-step explanation:

10cm * 1.5ft = 15 ft

12cm * 1.5ft = 18ft

18ft * 15ft = 270ft square

Answer:

270 sq ft

Step-by-step explanation:

g(x) = (x - 5)^2 + 2x^3

At the root this function is equal to 0

(x - 5)^2 + 2x^3= 0

Rearrange:

(x - 5)^2 = -2x^3

Now if you plot these two functions you need to check how many times they intersect. For this you do not need to be precise just scetch approximately.

If you do that, you will see that they meet once. I cannot really use this site to plot, but you can use other tools for that if you do not know how to do it.

Answer:

Step-by-step explanation:

Find and compare the unit costs of the two different bottle sizes.

First:  

$2.79/(6 oz) = $0.465/oz

Second:

$10.89/(14 oz) = $0.778/oz

Clearly, the larger (14 oz) bottle is a much better buy

Answer: 14oz bottle for 10.89

Step-by-step explanation:

Did it before

Answer:

The density of the material must be at least 1.5 g/cm³.

Step-by-step explanation:

Answer:

260 meters.

Step-by-step explanation:

It is given that construction crews A,B,C and D build a 1200 meter long road.

[tex]A+B+C+D=1200[/tex]     ...(1)

Team A builds 1/2 of the total length built by the other 3 teams. So,

[tex]A:(B+C+D)=1:2[/tex]

It means total distance divided in 1:2.

[tex]A=1200\times \dfrac{1}{1+2}=1200\times \dfrac{1}{3}=400[/tex]

Similarly,

Team B builds 1/3 of the total length built by the other 3 teams.

[tex]B:(A+C+D)=1:3[/tex]

It means total distance divided in 1:3.

[tex]B=1200\times \dfrac{1}{4}=300[/tex]

C builds a section that is 1/4 of the length built by the other teams.

[tex]C:(A+B+D)=1:4[/tex]

It means total distance divided in 1:4.

[tex]C=1200\times \dfrac{1}{5}=240[/tex]

Now, put A=400, B=300 and C=240 in (1).

[tex]400+300+240+D=1200[/tex]

[tex]D=1200-940[/tex]

[tex]D=260[/tex]

Therefore, 260 meters build by D.

Answer:

q=35

Step-by-step explanation:

x2 - 12x + q = 0

Let the two roots be r and r+2.

Factor the quadratic expression:

(x - r)[x - (r + 2)] = 0

Expand, simplify, group like terms, and get

x2 - 2(r + 1)x + r(r + 2) = 0

Compare to

x2 - 12x + q = 0

and set equal the coefficients of like terms:

Coefficient of x:

-2(r + 1) = -12 ⇒ r + 1 = 6 ⇒ r = 5

(Then the other root is r + 2 = 5 + 2 = 7)

Constant term:

r(r + 2) = q ⇒ 5(5 + 2) = q

q = 35

Test the solution:

(x - 5)(x - 7) = x2 - 12x + 35

With two roots differing by 2, you get an equation of the form

x2 - 12x + q = 0

with q = 35.

Answer:

A. Positive

Step-by-step explanation:

Since 48 is way larger than 39, we know that if we subtract 39 from 48, we will still get a positive number.

Answer:

A. Positive

Step-by-step explanation:

Im not very good at explaining. I hope I helped :)

Answer:

n = 7*m

Step-by-step explanation:

divide n by m and you will get the same value

so : n= 7*m

I hope this helps you

Answer:

3  -√5

Step-by-step explanation:

(√5 + 1) / (2 + √5)

Multiply top and bottom of the fraction by the conjugate of 2 + √5 which is  2 - √5.

By doing this we rationalise the denominator:

= (√5 + 1 ) *  ( 2 - √5) /  (2 + √5)(2 - √5)

= (√5 + 1 ) *  ( 2 - √5)/ (4 - 2√5 + 2√5 - 5)

= (2√5 - 5 + 2 - √5) / (4 - 5)

= (√5 - 3) / -1

= 3  -√5

Answer:

4 seconds.

Step-by-step explanation:

The given equation is

[tex]h=-16t^2+64t[/tex]

where, h is height in feet of a golf ball above the ground after being hit into the air and t is the number of seconds elapsed since the ball was hit.

We need to find the time for the ball to hit the ground.

At ground level the height of ball is 0, i.e., h=0.

[tex]-16t^2+64t=0[/tex]

[tex]-16t(t-4)=0[/tex]

Using zero product property, we get

[tex]-16t=0\Rightarrow t=0[/tex]

[tex]t-4=0\Rightarrow t=4[/tex]

Therefore, it will take 4 seconds for the ball to hit the ground.

Answer:

4 seconds

That's your answer!!

Step-by-step explanation:

1.32:24

32/8:24/8

4:3

2.20:32

20/4:32/4

5:8

3.24:76

24/4:76/4

6:19

4.24:32:20

24/4:32/4:20/4

6:8:5

Answer:

The given graph is a function because

One input result in one output.

Step-by-step explanation:

Vertical line test is a test used for testing whether a graphed relation is a  function or not. In a vertical line test, multiple vertical lines can be drawn at any point of the function. If the vertical lines intersect the graph only at one point, it means the there is only one value of y for a value of x, therefore the given relation is a function. If the vertical lines interest the graph at 2 or more locations, the given relation is not a function.

Answer: 25% decrease

Step-by-step explanation:

We know that 28 dollars a share was at its 100 percent. So we can make the fraction 28/100. Equal this to 21/x.

so we have: 28/100 = 21/x

Now just cross-multiply and simplify.

And you get what x is.

You get x = 75. So to see how much it went down, we subtract 75 from 100.

Answer:

correct answer is 2800.

Step-by-step explanation:

You take the area of the square which is 20x20 = 400.

There is 5 squares 400x5 = 2000

There is 4 triangles--which is 1/2 the area of 1 square (In this case).

One triangle = 200

200x4 = 800

2000 + 800 = 2800

Answer:

Step-by-step explanation:

550

Answer:

The third integer is 27

Step-by-step explanation:

Given

Represent the consecutive odd numbers with [tex]T_1, T_2; and\ T_3[/tex]

Since they are consecutive odds, then

[tex]T_2 = 2 + T_1[/tex]

[tex]T_3 = 2 + T_2[/tex]

From the first statement in the question, we have that

[tex]T_1 + T_3 = 5 T_2 - 75[/tex]

Required

Find the third integer

Recall that

Substitute [tex]T_2 = 2 + T_1[/tex] in [tex]T_3 = 2 + T_2[/tex]

[tex]T_3 = 2 + 2 + T_1[/tex]

[tex]T_3 = 4 + T_1[/tex]

Substitute [tex]T_3 = 4 + T_1[/tex] and [tex]T_2 = 2 + T_1[/tex] in [tex]T_1 + T_3 = 5 T_2 - 75[/tex]

[tex]T_1 + 4 + T_1 = 5(2 + T_1) - 75[/tex]

Open Brackets

[tex]T_1 + 4 + T_1 = 10 + 5T_1 - 75[/tex]

Collect like terms

[tex]T_1 + T_1 + 4 = 5T_1 - 75 + 10[/tex]

[tex]2T_1 + 4 = 5T_1 - 65[/tex]

Collect like terms

[tex]2T_1 - 5T_1 = - 65 - 4[/tex]

[tex]-3T_1 = - 69[/tex]

Divide both sides by -3

[tex]\frac{-3T_1}{-3} = \frac{- 69}{-3}[/tex]

[tex]T_1 = 23[/tex]

Recall that [tex]T_3 = 4 + T_1[/tex]

[tex]T_3 = 4 + 23[/tex]

[tex]T_3 = 27[/tex]

The third integer is 27

22. 30 degrees because line DB bisects(meaning cuts in half) angle ABC so DBC should be 30 degrees because 30+30 is 60 which is what angle ABC is.

23. 60 degrees because if we assume that it is a parallelogramand that the opposite angle are congruent.

24. 120 degrees because a quadrilatteral has sides that will equal to 360 degrees, and I said that a parallelogram will have its opposite angles congruent we take away 120 from 360 (from the previous angles ABC and BCD) we end up with 240, we divide 240 by 2 and end up with 120 degrees

25. 60 degrees. I found that angle DCB is 120 degrees so angles DCB and DCE are supplementary(add up to 180 degrees) and we subtract 120 from 180 which is 60 degrees.

26. 60 degrees vertical to angle DCE.

27. 120 degrees supplementary to DCE

Answer:

The answer is given below

Step-by-step explanation:

From the diagram below,Let the line AB and CD be parallel line. Let transversal line EF cut AB at Y and transversal line EF cut CD at Z.

The bisector of ∠BYZ and ∠DZY meet at O. Therefore ∠YZO = ∠DZY/2 and ∠ZYO = ∠BYZ/2

∠BYZ and ∠DZY are interior angles.

∠BYZ + ∠DZY = 180 (sum of consecutive interior angles)

∠BYZ/2 + ∠DZY/2 = 180/2

∠BYZ/2 + ∠DZY/2 = 90°

In ΔOYZ:

∠YZO + ∠ZYO + ∠YOZ = 180 (sum of angles on a straight line).

But  ∠YZO = ∠DZY/2 and ∠ZYO = ∠BYZ/2

∠DZY/2 + ∠BYZ/2 + ∠YOZ = 180

90 + ∠YOZ = 180

∠YOZ = 180 - 90

∠YOZ = 90°

Therefore Angle bisectors of the same side interior angles are perpendicular.

Answer: 16x+8

Step-by-step explanation:

(fоg)(x) is f of g(x). This means you plug in g(x) into f(x). Since we are given f(x) and g(x), we can directly plug in g(x) into x.

(fоg)(x)=8(2x+1)                [distribute 8]

(fоg)(x)=16x+8

Answer:

16x + 8 = (fºg)(x).

Step-by-step explanation:

If f(x) = 8x and g(x) = 2x+1, find (fºg)(x).

This is a composite function.  To form it properly, substitute g(x) = 2x + 1 for x in f(x) = 8x.  We get:

8(2x + 1)(x), or 16x + 8 = (fºg)(x).

Answer:

The solution is (-17,80.5) and (1,8.5)

Step-by-step explanation:

Equation 1 : [tex]y=\frac{1}{2}x^2+4x+4[/tex]

Equation 2: [tex]y = -4x+12.5[/tex]

Substitute the value of y from equation 2 in equation 1

Equation 1 : [tex]y=\frac{1}{2}x^2+4x+4[/tex]

After substitution :

[tex]-4x+12.5=\frac{1}{2}x^2+4x+4\\\frac{1}{2}x^2+8x+4-12.5=0\\\frac{1}{2}x^2+8x-8.5=0\\x^2+16x+17=0\\x=-17,2[/tex]

Substitute the value of x = -17

y = -4x+12.5

y = -4(-17)+12.5

y=80.5

Substitute the value of x = 1

y = -4(1)+12.5

y=8.5

Hence the solution is (-17,80.5) and (1,8.5)