Explain why please i need help for my math class

Answer:

5 units (you are right!)

Step-by-step explanation:

The triangles ABD and BCD are similar.

Therefore,

[tex]\frac{x}{10}=\frac{10}{4x} \\4x^{2}=100\\x^{2}=25\\x=5[/tex]

I hope this helped!

Answer:

Equation: f(x)=x²-4x+3

Stretch factor: a=1

Step-by-step explanation:

Notice the x-intercepts are (1,0) and (3,0) which can help us determine the equation by setting their expressions equal to 0 and expanding:

(x-1)(x-3)=0

x²-4x+3=0

Therefore, the equation is f(x)=x²-4x+3 where the stretch factor is a=1

Answer:

15

Step-by-step explanation:

If -3 and -5 are the x intercepts, then (x+3) and (x+5) are factors

f(x) = (x+3)(x+5)

Expand

f(x) = x² + 5x + 3x + 3(5)

f(x) = x²+8x + 15

Equate x²+8x + 15 with x²+8x

x²+8x + 15 = x²+8x + b

On comparing

15 = b

Swap sides

b = 15

Hence the constant term is 15

Answer:

15

Step-by-step explanation:

HAVE A NICE DAY

Answer:

A

Step-by-step explanation:

Every object in a state of uniform motion will remain in that state of motion unless an external force acts on it.

Force equals mass times acceleration [ ].

For every action there is an equal and opposite reaction.

Answer:

Step-by-step explanation:

Answer: Step-by-step explanation:

7²=4²+5² ⇒ a²=b²+c² ⇒ ∠A=90°

a)cos A=cos 90°=0

b)sin A​ =sin 90°=1

Answer: C

Step-by-step explanation:

edge2021

Answer:

Base 9

Height 10

A 90

Answer:

eat an apple it is good for you and others around you

Answer:

9 teachers were sitting in the auditorium.

Step-by-step explanation:

63 divided by 7 is 9.

Answer

Step-by-step explanation:

yeah um im not really quite sure

Answer:

measure of angle 1=180-123=57°[exterior angle is supplementary]

Answer:

B. The second graph

Step-by-step explanation:

Hope this helps! Let me know if you need an explanation! Have a nice day :)

Answer:

Second option

Step-by-step explanation:

Answer: the height of the tree is 27 feet

Step-by-step explanation: We can set up a proportion comparing the height of each object to the length of the shadow.

h s

h 15 = 18

       10

Cross multiply

10 ⋅ h = 18 ⋅ 15

10 h = 270

Use the multiplicative Inverse

10

h

10

=

270

10

h = 27

Answer:

bob would be 46

Step-by-step explanation:

take 67 subtract 4 to get 63 and divide it by 3 to get 3 groups of 21

add 21 and 21 to get 42+4=46

Answer:

b= 133º

c= 47º

Answer:

18

Step-by-step explanation:

First, we have to find out the scale factor of the triangles. So, we go from 20 to 30 by:

[tex]20s=30\\s=3/2\\s=1.5[/tex]

1.5 is the scale factor. We're looking for x. We go from 12 to x by:

[tex]12*1.5=x\\18=x[/tex]

Answer: well first you need to send the picture

Step-by-step explanation:

1. Take the picture

2. Post it to brainly

3. Get your answer

Answer:

180

Step-by-step explanation:

All you would have to do is divide $9 (900) by the worth of a nickel (5) thus the equation would be 900÷5 which equals 180

Answer:

7 in by 8 in

Step-by-step explanation:

The dimensions of the living room is 14 ft by 16 ft

In the scale drawing 2 in = 4 ft

[tex]1\ \text{in}=2\ \text{ft}[/tex]

So, 1 in of the scale drawing represents 2 ft in the real world.

[tex]1\ \text{ft of the actual dimension}=\dfrac{1}{2}\ \text{in in the scale drawing}[/tex]

[tex]14\ \text{ft}=\dfrac{14}{2}=7\ \text{in of the scale drawing}[/tex]

[tex]16\ \text{ft}=\dfrac{16}{2}=8\ \text{in of the scale drawing}[/tex]

Hence, the dimensions of the scale drawing are 7 in by 8 in.

Answer:

Constant.

Step-by-step explanation:

If a graph of a function is flat, it means there is no increase or decrease, meaning it has no changes.

Answer:

71.3

Step-by-step explanation:

Data set:

60, 60, 60, 60, 65, 65, 65, 65, 65, 65, 65, 70, 70, 70, 70, 70, 70, 70, 75, 75, 80, 85, 85, 90, 90, 90

Mean = total sum of numbers / amount of numbers

Answer:

71.3

Step-by-step explanation:

add every score and divide by number of total students for the mean

Answer:

3/15 cause there are 15 candies in total and 3 snickers

Answer:

the circle is 615.752160104 but the square196

Step-by-step explanation:

Answer:

De los números racionales dados, aquel que es equivalente a un decimal finito es:

Step-by-step explanation:

Los decimales finitos, son aquellos cuyos números después del punto decimal no se extienden hasta el infinito sino que pueden ser contados fácilmente, por ende, lo que debes hacer en cada caso es dividir el número decimal e identificar si sus cifras decimales son infinitas o no, a continuación te mostraré la división en cada uno de los casos y podrás comprobar la respuesta correcta, (en caso de que los decimales sean infinitos utilizaré puntos suspensivos al final del número):

Como puedes notar, la única opción que equivale a un decimal finito, en este caso 0.2, es 1/5.

Answer:

25%

Step-by-step explanation:

$60 * .25 = $15

$60 - $15 = $45

Answer:

A

Step-by-step explanation:

For transformation functions;

(x-2), the 2 represents horizontal shift (left or right)

if it is a positive= shift left

if it is a negative= shift right

since it is -2, the vertex of the graph is shifted right by 2 units.

For the +3 on the outside of h(x-2), this addresses the vertical shift.

Since it is +3, this means that the graph's vertex is shifted up.

Answer:

21,280

Step-by-step explanation:

Answer:21,280

Step-by-step explanation: because I am smart and I am black BLM and LM and ALL LIVES MATTER

Answer:

fromfromfromfromfromfromfromfromfromfromfromfromfromfromfromfromfrom

Step-by-step explanation:

Answer:

Linear

Step-by-step explanation:

The numbers add by 4 it’s not scrambled

Answer:

This is a proportional relationship

Step-by-step explanation:

The x values increase by 1 every time

The y values increase by 4 every time

Hope this helps!!

Answer:

$98.30

Step-by-step explanation:

23.04+29.40+0.89+44.97