I need help with this question

Answer:

C. AB/EF = BC/EF

Step-by-step explanation:

If the triangles are similar then the ratio of these side lengths must be equal.

Answer:

Step-by-step explanation:

20ft($18.40/80ft)=$4.60

Answer:

$4.6

Step-by-step explanation:

Use 18.40 and 80. if $18.40 is 80 feet, divide 18.40 by 4 to get 4.60. Now you know that you got 4.60, see if you can add 4.6 four times to get to 18.4. (You can.) So, 20 feet is $4.60 or $4.6.

Answer:

C

Step-by-step explanation:

-2x^2 + 2x -3

-2(5)^2=

-50

2(5)

= 10

-50+10-3

is -43 so C

Answer:

52 percent.

Where: 2500 is the old value and 3800 is the new value. In this case we have a positive change (increase) of 52 percent because the new value is greater than the old value.

Answer:

52%

Step-by-step explanation:

A function is a set of relation that doesn't have repetitive domain. If we want to know if a graph is function or not, we have to do the line test.

Line Test

Result

If a line intercepts a graph more than one point, it is not a function.

However, if a line only intercepts a graph just one point, it is indeed a function.

The given graph from the question is a function because it passes line test.

Domain and Range

Domain is the set of all x-values, meaning we only focus on x-axis or x-value only.

Range is the set of all y-values. We only focus on y-value or y-axis for Range.

Determine Domain from Graph

We can simply say that the domain is from starting domain or x-coordinate point to end x-coordinate point. For example, if a graph starts at x = -4 and ends at x = 2, we can say that - 4<=x=2.

Determine Range from Graph

Similar to Domain except Range starts from the minimum value or point to the maximum point or value. For example if a graph starts at min point = 6 and max point = 9. We can say that 6<=y<=9.

From the graph, the domain starts from negative infinity to positive infinity. Meaning that x can be any numbers. Hence, the domain is set of all real numbers. For range, the minimum value is 0 and max value is positive infinity. Therefore we write y>=0.

[tex] \begin{cases} x \in \mathbb{R} \\ y \geqslant 0 \end{cases}[/tex]

Domain is set of all real numbers.

Range is greater or equal to 0.

The circumcenter of this obtuse triangle located is outside the triangle. Then the correct option is B.

The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.

If all the angles of the triangle are acute angles. Then the location of the circumcenter will lie inside the triangle.

If one of the angles of the triangle is a right angle. Then the location of the circumcenter will lie on the hypotenuse of the right-angle triangle.

If one of the angles of the triangle is an obtuse angle. Then the location of the circumcenter will lie outside the triangle.

The circumcenter of this obtuse triangle located is outside the triangle. Then the correct option is B.

More about the triangle link is given below.

https://brainly.com/question/25813512

#SPJ2

Answer: 0.029736

Step-by-step explanation:   sorry i know it not the best but i couldnt do it another way anyways hope this helps

         2 9 7 3 5 .

9 7 5 2 6 | 2 9 0 0 .      

1 9 5 0 . 5 2    

9 4 9 . 4 8 0    

8 7 7 . 7 3 4    

7 1 . 7 4 6 0  

6 8 . 2 6 8 2  

3 . 4 7 7 8 0  

2 . 9 2 5 7 8  

5 5 2 0 2 0

4 8 7 6 3 0

6 4 3 9 0

Answer:

-5x<60 divide both side by -5

x>-12

Answer:

4 3/10

Step-by-step explanation:

Answer:

4 3/10

Step-by-step explanation:

Answer:

C. y </ 3/4x +10 and y<l -1/2x - 3

Step-by-step explanation:

Basically first do process of elimination with your focus on one equation

for example :: ( >l is greater then or equal to and <l is lease then or equal to)

focus -> y >l 3/4x + 10

1) determine which line has the y-intercept of positive 10

2) is the line dotted or straight? dotted line = > or < while straight line = >l or <l

this should get rid of B and D now

3) remember this = if the slope is - then the shaded portion would be the way that the less then sign is pointing

( y <l -4x then the shaded portion would be on the left side )

remember again = if the slope is + then the shaded portion would be the way that the greater then sign is pointing

( y <l 4x then the shaded portion would be on the right side )

so the line that we are focused on would have the right side shaded which means that it would be a <l ,so the answer would be C

hope this helped you understand how to solve these a bit better!

(tbh the day I figured how to solve these problems, I swear the whole world turned 180 degrees for me. )

Answer:

$138

Step-by-step explanation:

$120 going up 15% = $138

Answer:

3x48+48 = 192

3x48= 144

144+48= 192

There has been sold 12 items of f and 36 items of e in the system.

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

We are Given the system of equation:

(1) e + f = 48

(2) e = 3f

Then Substituting e=3f into e + f=48:

3f + f = 48

Adding similar terms:

4f = 48

Dividing both sides by 4:

f = 48/4

Simplifying:

f = 12

Replacing;

f=12 in e + f =48

e + 12 = 48

Now Subtracting -12 to both sides:

e = 48 - 12

e = 36

Thus There has been sold 12 items of f and 36 items of e.

Learn more about equations here;

https://brainly.com/question/25180086

#SPJ2

Answer:

I believe D is the answer

Step-by-step explanation:

how I find the slope it by looking at the y-axis and what hits directly on that line. you can see that 3 hits directly on that line so the b in y=mx+b is three which is your starting point. then you follow the line and see where it hits directly on a point. then count the blocks. remember that it's rise over run so that's y over x. so you go down five and over one. since you go down five it's negative. the negative is only added onto the five not the one. and since it's five over one, you don't need to put the over one, it's just automatically there. hope this helps! good luck!

Answer:

2.5 ft/hr Step-by-step explanation: divide the number of hours by the number of feet.

Step-by-step explanation:

Answer:

Hello!

2/5 feet per hour

d = vt

1 1/2 or (3/2) = v(3.75 hours or 15/4)

divide both sides by 3.75 hours

0.4 or  2/5

Hope this helps :))

Answer:

13- No because the size of the triangle can be different, meaning bigger side length

in 14 he is forgetting the lines at the angles. The little circular ones that say the angles are congruent.

Step-by-step explanation:

Answer:

(-7,-8)

Step-by-step explanation:

The original point is (8,7)

To reflect it, just switch their places and change their signs.

So, (-7,-8)

Answer:

19 tables = $201

t tables = 9t+30

Step-by-step explanation:

the slope would be 9 because she gets $9 for each table (t), 30 would be the y-intercept because she will always get that amount each week.

Insert 19 to equation:

y(t) = 9(19) + 30

Solve:

201

Hope this helped :)

Answer:

112.72

explaination:

Answer:

C the answer is C

Step-by-step explanation:

Answer:

$540

Step-by-step explanation:

Multiply 10.80 by the 5 sisters then divide your answer by 10%

Answer:

one solution

Step-by-step explanation:

If you simplify the equation, it becomes 1x+1=2. Then you subtract the 1 from 2 and get 1x=1. Therefore, x=1 which is ONE SOLUTION.

The number of peanuts and raisins for 7 portions is 35 and 63 respectively.

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Given that, the ratio of peanuts to raisins in one portion is 5:9.

Number of peanuts and raisins you will need if you make 7 portions and 12 portions.

Now, 5×7 : 9×7

35:63

Here, 5×12 : 9×12

60 : 108

Therefore, the number of peanuts and raisins for 7 portions is 35 and 63 respectively.

To learn more about the ratio visit:

brainly.com/question/13419413.

#SPJ5

Answer:

3

Step-by-step explanation:

It is number one.

if there are no more than 20, that means there are less. If one doesnt work try number 2.

Answer:

1 : 1.6

For every centimeter on the model, it is 11.6 centimeters on the real plane

Step-by-step explanation:

The required value of the scale of the model in the form of 1:160.

Given that,

The wingspan of the model is 50 centimeter,

The wingspan of the real plane is 80 meter.

We have to determine,

The scale of the model and give your answer in the form 1 : n.

According to the question,

The wingspan of the model =  50 centimeter [tex]= \frac{50}{100} = 0.5m[/tex]

The wingspan of the real plane is 80 meter.

The ratio of the scale = 1:n

Therefore,

The equation of proportion is,

[tex]\frac{wingspan \ of \ the \ model}{wingspan\ of \ the \ palne} = \frac{1}{n}[/tex]

Putting all the values in the equation,

[tex]\frac{0.5}{80} = \frac{1}{n} \\\\n = \frac{1 \times 80}{0.5} \\\\n = 160[/tex]

The value of n = 160.

Hence, The required value of the scale of the model in the form of 1:160.

For the more information about Scale model click the link given below.

https://brainly.com/question/9448074

Answer:

$39.59

Step-by-step explanation:

37 increase 7% =

37 × (1 + 7%) = 37 × (1 + 0.07) = 39.59

Answer:

9

Step-by-step explanation:

the range is the difference between the greatest value and the smallest one. The greatest value in the data set is 33, and the smallest is 24.

So u just subtract 24 from 33:

33 – 24 = 9

and that's your range! hope this helps!