I need help please! I'm really bad at math!

Answer:

B,C,D

Step-by-step explanation:

−21<−3x

Answer: X<7

−5x>−35

Answer: x<7

The fourth also equals 7

Answer:

the ordered pair represents the slope of the line and its function

Step-by-step explanation:

Answer:

Step-by-step explanation:

The two formulas are essentially the same.  Recall that 2r = d (and of course d = 2r). If you're given the diameter, d, use C = πd; if you're given the radius, use C = 2πr.

Answer:

5 ft and 11 ft

Step-by-step explanation:

l= 2w+1

A=lw= 55

w(2w+1)=55

2w²+w-55=0

integer solution of quadratic equation is:

w=5 ft

l= 2*5+1=11 ft

Answer:

32 feet

Step-by-step explanation:

Start by creating your 2 equations

l = 2w + 1

l * w = 55

Plug in l, the isolated variable

(1 + 2w)w = 55

w + 2w² = 55

2w² + w -55 = 0

( − 5 ) ( 2 + 1 1 ) = 0

w= 5

w= -11/2 <- the width can't be negative so this one is out

Plug width into the area formula to find length

l * 5 = 55

l = 11

Find the Perimeter

2(11) + 2(5)

22 + 10 = 32

Answer:

one board game cost 15 dollars

75/5=15

15y

y = number of board games and 15= the price of each board game

so to calculate any number of board games bought just input the number of board games bought for y in the expression 15y and you will get the price.

Step-by-step explanation:

The solution is Option D.

The proportion equation is y = 15x , where 15 is the constant of proportionality

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the proportion equation be represented as A

Now , the value of A is

The number of board games x = 5 packs

The total cost of the board games y = $ 75

Substituting the values in the equation , we get

y = kx , where k is the proportionality constant

75 = 5 ( k )   be equation (1)

Divide by 5 on both sides of the equation , we get

k = 15

Substitute the value of k in the equation , we get

Now , the proportion is

y = 15x

Hence , the proportion is y = 15x

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Answer:

2 dollars per hour

Step-by-step explanation:

I believe your supposed to divide 20 by 10 to get 2.

Answer:

75 - 3n

Step-by-step explanation

Answer:it’s easy and simple its c

Step-by-step explanation:

Answer:

Mrs Washington class                                                  Mr Utley's class

Band: Chorus                                                                 Band : Chorus

      2 : 3                                                                               5 : 7

      8 :  12                                                                            10 : 14

     10 :  15                                                                            15 : 21

     12 : 18                                                                             20 :  28

     14 :  21                                                                             25 : 35

Mrs Washington has a greater ratio of band students to chorus students.  I know my answer is correct because I compared the ratio of the band to chorus students where the Band was the same. When Band to chorus had 10:15  students for Washington's class, and Band to chorus had 10:14 in Utley's class. This means That Washington had more students.

Hope this helps!

Answer:

Unbiased because the servey was not taken by a specific group of people. Instead, the servey is taken by random people at the shopping mall.

Answer:

Unbiased

Step-by-step explanation:

Because in the dictionary it says showing no prejudice for or against something; impartial.  "his assessment of the benefits and drawbacks was unbiased." So when I read that, it was not prejudice, it was showing that whoever started the survey, was not prejudice, cus he was trying to help the company. Hope this helps you :)

The statement which is true for the function having slope is that the function is linear.

Function is like a defined relationship between two or more variables expressed in equal to form. In a function each value of x must has a corresponding y value. The value which is entered in the function is known as domain and the value which comes out after is codomain of the function.

We have been given that slope of function is -3.

1) The function is linear because slope is in single number.

2) We cannot say that the equation is y=-3x because it depends on other points also. Suppose the point at which the line passes is (1,2)

y-2=-3(x-1)

y-2=-3x+3

y=-3x+3+2

y=-3x+5

So  this statement is wrong,

3) Same in statement third , we cannot say that the point (2,-6) lie on line.

4) It is wrong because in the given option slope is -1/3.

Hence the correct statement is that the function is linear.

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Answer: The y-intercept affects where the linear equation meet the y-axis. The slope affects how steep the linear equation is on the graph.

Answer:

What is the equation for this

Step-by-step explanation:

Answer:

15 sorry if I am wrong  ;-;

Step-by-step explanation:

Answer:

Step-by-step explanation:

It's options 1, 3 & 4

Abd I am not that sure about the second option, anyway the rest all which are correct I have specified

Answer: 1 & 4 is the best I can do there may be one more hope this helps!

Step-by-step explanation:

Answer:

(0, 3)

Step-by-step explanation:

Visualize this problem as being based on a circle of radius 3.  (-3, 0) lies on this circle, straddling the x-axis.

Now if we rotate that radius (connecting the (0, 0) to (-3, 0) clockwise, the point (-3, 0) becomes the point (0, 3).

Answer:  I THINK 150

Step-by-step explanation:

Answer:

C: x≥12

D: x<-15

E: x<7.5 or 15/2

F: x<-8

G: x≥-2.7 or -8/3

H: x≥-6

Step-by-step explanation:

I trust you know how to graph it

Answer: About 24 miles per hour or 11 meters per second.

Step-by-step explanation: It's concluded that the airspeed velocity of an unladen swallow is about 24 miles per hour or 11 meters per second.

The airspeed velocity of a unladen swallow is about :

24 miles/hr or 11 m/s

In aviation, airspeed is the speed of an aircraft relative to the air.

Given is to answer the speed of a unladen swallow.

The airspeed velocity of a (European) unladen swallow is about :

24 miles/hr or 11 m/s.

Therefore, the airspeed velocity of a unladen swallow is about :

24 miles/hr or 11 m/s.

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Answer:

Step-by-step explanation:

La primera ya que es .35 y .40 hay que igualar

Answer:

The cost of 1 calculator is $28.00

Step-by-step explanation:

You haven't mentioned the question. Anyways if you want to find the value of 1 calculator, the simplest method ( in my opinion) you could do so in the ratio method:

 5 calculators : $140

 1 calculators : x

( x is the cost of 1 calculator. You have to find x. )  

Cross multiply both the ratios. Multiply 5 with x and 140 with 1.

5x = 140 × 1

5x = 140

Bring 5 to the other makes 140 divided upon 5, as it was multiplied with x.

x = [tex]\frac{140}{5}[/tex]

x = $28

You could not only find the cost of 1 calculator, but any number of calculators. Just replace the number of calculators with 1 calculator that I have found the cost of.

Answer:

35.42

Step-by-step explanation:

25*3.14=35.42

Answer:

35.42

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Answer:

3

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

The surface area increases by a factor of four.

Step-by-step explanation:

Answer: the surface are increases by a factor of 4

Step-by-step explanation:

The surface are without doubulo it it is- 56

and with it double is- 208

and 56 times 4 is 208

measures the rectangle doubled-

hieght- 4

width- 6

lenth- 8