Find the length of DB

Answer:

The coordinates of the point b are:

b(x₂, y₂)  = (-5, -1)

Step-by-step explanation:

Given

As m is the midpoint, so

m(x, y) = m (-7, -2.5)

The other point a is given by

a(x₁, y₁) = a(-9, -4)

To determine

We need to determine the coordinates of the point b

= ?

Using the midpoint formula

[tex]\left(x,\:y\right)=\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]

substituting (x, y) = (-7, -2.5), (x₁, y₁) = (-9, -4)

[tex]\left(-7,\:-2.5\right)=\left(\frac{x_2+\left(-9\right)}{2},\:\:\frac{y_2+\left(-4\right)}{2}\right)[/tex]

Thus equvating,

Determining the x-coordinate of b

[x₂ + (-9)] / 2 = -7

x₂ + (-9) = -14

x₂ - 9 = -14

adding 9 to both sides

x₂ - 9 + 9 = -14 + 9

x₂ = -5

Determining the y-coordinate of b

[y₂ + (-4)] / 2 = -2.5

y₂ + (-4) = -2.5(2)

y₂ - 4 = -5

adding 4 to both sides

y₂ - 4 + 4 = -5 + 4

y₂ = -1

Therefore, the coordinates of the point b are:

b(x₂, y₂)  = (-5, -1)

Answer:

y = 3x - 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x + 2 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes, then

y = 3x + c ← is the partial equation

To find c substitute (1, 1) into the partial equation

1 = 3 + c ⇒ c = 1 - 3 = - 2

y = 3x - 2 ← equation of line

Answer:

Yes

Step-by-step explanation:

Step-by-step explanation:

Factorise completely

a 6x2 + 18x

Common factors

6x(x+3)

b 8y3 – 2y4

2y^3(4-y)

c 16xy – 8xy?

8xy(2-1)

8xy

8 Expand and simplify

a 4(x + 3) + 7(x - 1)

4x+12+7x-7

11x+5

b x(x – 6) – x(4x – 2)

x^2-6x-4x^2+2x

-3x^2-4x

-x(3x+4)

C x(3x2 + 4) + 2x(5x2 + 9)

3x^3+4x+10x^3+18x

13x^3+22x

x(13^2+22)

Answer:

The slope will be y=-20/8x +17.5

Step-by-step explanation:

I hope this Helped

Answer:

15t > 180

Step-by-step explanation:

Answer:

T>12

Step-by-step explanation:

Answer:

Step-by-step explanation:

The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?

Answer:

[tex]1\frac{1}{4}[/tex] or 1.25

Step-by-step explanation:

(1 * 1/4)5 = 1/4 *5 = 5/4 = [tex]1\frac{1}{4}[/tex]

Answer:

y=-1/2x+4

Step-by-step explanation:

the slope is -1/2x and y intercept is 4

Answer:

D

Step-by-step explanation:

Answer:

it will be 35720 . I hope my answer is correct

Answer:

y ≥ 2x + 1

Step-by-step explanation:

you want to find the slope, then the y-intercept, and set the equation in slope intercept form, but imma give you a tip so you know when its either y ≥ x or  

y ≤ x, so when its y ≥ x, the shaded part will be to the left of the graph, or the top of the graph if y ≥ any number, but for y ≤ x or any number, it will be on the right side of the graph or the bottom if its a horizontal line that includes anything less then the y-intercept, but for a normal function, you can plug in values to figure out if its ≥ or ≤

Answer:

linear inequality is a numerical statements which involves the following signs

i. <

ii. >

iii.≥

iv.≤

Answer:

-58/45  OR -1  13/45 OR -1.28_

Step-by-step explanation:

I hope this helps!

Answer:

-58/45

Step-by-step explanation:

I hope this helps lol <3

Answer:

The 5 is for the 5 people who are going to the baseball game.

Answer:

$35

20/4= $5

5 dollard per ticket

7 * 5 = 35

Step-by-step explanation:

7 tickets would cost 35 dollars

Answer

seven tickets would cost $35.00

Step-by-step explanation:

Answer:

Nora would have 30 papers graded in 5 hours.

Step-by-step explanation:

6 papers per hour x 5 hours = 30 papers graded in 5 hours

Answer:

Nora will have 1 page left to grade after working for 5 hours.

Step-by-step explanation:

Her constant is 6 papers per hour.

After 5 hours, she would grade 5x6 papers, which is 30 papers.

So we know she is going to grade 31 papers, and she has already done 30.

So 31-30=1, that means that she has 1 more paper left to grade.

Hope this helped you! Please leave a rating and let me know if it was right! hopefully I can get brainliest, but have a great day!

Answer:

It doesn’t let us look at all the images while answering! Try to copy and paste all the questions, but don’t post the screenshot!

Step-by-step explanation:

Answer:

1.)A 2.)D 3.)A 4.)C 5.)B

Step-by-step explanation:

1.) there are 15 smileys and 5 suns... and you can divide them both my 3 and get 3 over 1 or, 3 to 1.

2.) there are 8 dictionaries and 25 reference books all together including the dictionaries so you would add 8+5+12 in order to get 25...

3.) There are 16 green and 6 red and you divide both by 2 and get 8 to 3

4.) there are 6 red and 24 blue you can divide both by 6 in order to get 1 to 4

5.)there are 24 blue and 46 in all but they can both be divide by 2 in oreder to get 12 to 23

Answer:

Y = 2x - 6

Step-by-step explanation:

m =  2

Answer:

D

Step-by-step explanation:

pi = 3.14 --> round pi to 3 --> pi/2 = 1.5 --> pi^2 = 9

6 > sqrt(28) > 5

4> \sqrt[3]{28\\} > 3

Thus D

Answer:

(2p-3)² = 4p²-9

may it can help you .

mark me as brainliest pls

Answer:

yet

Step-by-step explanation:

ya im sorry i don't know

21x just a random number

Answer:

C

Step-by-step explanation:

because 30÷6 is 5 and that is what should be placed

Answer: plane a because it was 10.46 miles away

Step-by-step explanation:

Answer:

it's either in between 1 and 2 or it is 2

Step-by-step explanation:

Answer:

y = 3x + 2

Step-by-step explanation:

Ans : y = 3x + 2

Steps:

(2y-6x=4)/2

y=3x+2