HELP MEEEEEEEEE PLSS

Answer:

Step-by-step explanation:

Question (1)

x² + 10x + 12

= x² + 2(5x) + 5² - 5² + 12

= [x² + 2(5x) + 5²] - 5² + 12

= (x + 5)² - 25 + 12 [Since, a² + 2ab + b² = (a + b)²]

= (x + 5)² - 13

Question (2)

y² - 6y - 15

= y² - 2(3y) - 15

= y² - 2(3y) + 3² - 3² - 15

= [y² - 2(3y) + 3²] - 3² - 15 [Since, a² - 2ab + b² = (a - b)²]

= (y - 3)² - 3²- 15

= (y - 3)² - 9 - 15

= (y - 3)² - 24

Answer:

392

Step-by-step explanation:

40% of 980 = 0.4 × 980 = 392

Answer:

answer is 392

Step-by-step explanation:

Answer:

20 percent of what

Step-by-step explanation:

Answer:

it is indeed the square

Step-by-step explanation:

Answer:

ummmm a triangle?

Step-by-step explanation:

LIke i dont know, kinda reminds me of my x never knew how to- never mind. Like just put traingle or whatever

Answer:

y=-2x-4

Step-by-step explanation:

6x + 3y=-12 subtract 6x to other side

3y=-12-6x divide 3 to every number

1y=-4-2x

Answer: m<4

Step-by-step explanation: hope this help

Answer:

Rise over Run.

Step-by-step explanation:

If it's on a line on a graph you count how many it goes up until it's aligned with the next point and then you count how ever many over until it hits it. So it could be 2 up and 4 over making the slope 2/4.

I'm sorry that might not make much sense I'm bad at explaining but let me know if that helps at all!!

Answer:

A.8 possible outcomes

B. The probability of getting no heads is 1 of 8

C. it's clear that 1/2 the outcomes result in at least 2 tails.

Step-by-step explanation:

the answer is number b which is rhombus

Answer:

rhombus

Step-by-step explanation:

rhombus

a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.

It's either B or A. It's probably A tho.

Answer:

3a + b = 180

Step-by-step explanation:

Supplementary angles are angles that, when added, equal 180 degrees.

Let's use a to represent the unknown angle, and b to represent its supplement:

3a + b = 180

Answer:

Y = 2/3x + 3

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

The computation of the XW is shown below

As triangle UVX is a right angle

So

VU^2 = XU^2 - VX^2

VU^2 = 15.7^2 - 8.5^2

VU^2 = 246.49 - 72.25

VU^2 = 174.24

VU = 13.2

As VU = WX because of same point tangent

NOw XW is

= UX - UW

= 15.7 - 13.2

= 2.5

Answer:

y = -10x + 5 and y = 2/5x + 1

Step-by-step explanation:

slope-intercept form is y = mx + b, where m = slope and b = y-intercept.

for your first problem, just plug in the m and b values to complete the equation.

1.) y = mx + b ⇒ y = -10x + 5

plug in -10 for x (slope) and 5 for b (y-intercept)

and for the second problem...

since you're given a value for slope as well as a coordinate pair, all you need to do is plug those values into the equation for their respective variables and then solve for b. (it doesn't matter what order you plug values in, but i'm going to fill them in in the order of the equation; y, m, and x)

1.) plug in -1 for y

y = mx + b ⇒ -1 = mx + b

2.) plug in 2/5 for m

-1 = mx + b ⇒ -1 = 2/5x + b

3.) plug in -5 for x

-1 = 2/5x + b ⇒ -1 = 2/5(-5) + b

now it's time to solve for b! start by multiplying 2/5 and -5.

-1 = 2/5(-5) + b ⇒ -1 = -2 + b

add 2 to both sides of the equation. on the right side, it cancels itself out. on the left side, adding 2 to -1 gives you 1.

and you're left with 1 = b! :)

therefore, y = 2/5x + 1

i hope this helps! have a great day <3

Answer:

Step-by-step explanation:

4). Surface area of front and back = 2(lengh × height)

                                                        = 2(7×3)

                                                        = 63 cm²

    Surface area of top and bottom = 2(length × width)

                                                          = 2(8×7)

                                                          = 112 cm²

     Surface area of left and right = 2(width × height)

                                                      = 2(8×3)

                                                      = 48 cm²

      Total surface area = 63 + 112 + 48

                                      = 223 cm²

5). Surface area of top and bottom = 2πr²

                                                          = 2π(4)²

                                                          = 32π

                                                          = 100.53 cm²

    Surface area of middle = h(π × d)

                                            = 4(π × 8)

                                            = 32π

                                            = 100.53 cm²

     Total surface area = 32π + 32π

                                     = 64π

                                     = 201.06 cm²

6). Surface area of front and back = [tex]2[\frac{1}{2}(\text{Base})(\text{Height)}][/tex]

                                                        = Base × Height

                                                        = 6 × 8

                                                        = 48 cm²

     Surface area of bottom = 6 × 11

                                             = 66 cm²

     Surface area of the left = 8 × 11

                                             = 88 cm²

     Surface area of right = 10 × 11

                                        = 110 cm²

      Total surface area = 48 + 66 + 88 + 110

                                      = 312 cm²  

Answer:

A.)

Step-by-step explanation:

5.7^2+3.2^2=42.73

Sqrt of 42.73=6.5

Given :

Length of leg in a triangle = 3.2 cm

Length of leg of another triangle = 5.7 cm

We know that :

[tex]\color{hotpink}\tt {hypotenuse}^{2} \color{plum} = {base}^{2} + {height}^{2} [/tex]

Which means :

[tex] = \tt {3.2}^{2} + {5.7}^{2} = {h}^{2} [/tex]

[tex] =\tt 42.73 = {h}^{2} [/tex]

[tex] =\tt \sqrt{42.73} = h[/tex]

[tex]\hookrightarrow\color{plum} \tt6.5 \: cm= hypotenuse[/tex]

Thus, the hypotenuse of this triangle = 6.5 cm

Therefore, the correct option is (A) 6.5 cm

Answer:

-248

Step-by-step explanation:

first start by using PEDMAS

Since there is no number in the thousandths place which would make the number in the hundredths place round up or down, we keep the number the same:

314.16

Hope it helps! Good luck. :)

Answer: -26

Step-by-step explanation:

Answer:

-26

Step-by-step explanation:

khan <3

Answer:

I think the answer is 18.

Answer:

C

Step-by-step explanation:

Answer:

0=w^2-5.2w-51

Step-by-step explanation:

51=width x length

length=width-5.2

substitute for length

51=width x (width-5.2)

51=w^2-5.2w

0=w^2-5.2w-51

Answer:

It tells you in the book all you have to do is plug the numbers in the right spots

These are the volumes that it gives you. All you have to do is plug in the numbers

v= 1/2bh

v= bh

v = Bh

Step-by-step explanation:

Answer:

C lets look at were this line starts which is in between 7 and 8 right in the middle making it 7.5 it is negative because the point is on the negative side of our graph. Where the line ends in on positive 2 on the x-axis. -Your friend, Bill Cipher

Step-by-step explanation:

Answer:

I think you're doing one of these

√a square root √a ⋅ √a  = a √9 = ±3

3√a cube root 3√a ⋅ 3√a  ⋅ 3√a  = a 3√8 = 2

4√a fourth root 4√a ⋅ 4√a  ⋅ 4√a  ⋅ 4√a  = a 4√16 = ±2

n√a n-th root (radical) n/a for n=3, n√8 = 2

well let me know :)

Answer:

[tex]\sqrt{15.25}[/tex]

Step-by-step explanation:

To find the distance, we can use the distance formula:

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex] when the given points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

Plug in the points (-6.25,5) and (-3.75,2)

[tex]d=\sqrt{(-6.25-x_1)^2+(5-y_1)^2}\\d=\sqrt{(-6.25-(-3.75))^2+(5-2)^2}\\d=\sqrt{(-6.25+3.75)^2+(5-2)^2}\\d=\sqrt{(-2.5)^2+(3)^2}\\d=\sqrt{6.25+9}\\d=\sqrt{15.25}[/tex]

Therefore, the distance between the two coordinates is [tex]\sqrt{15.25}[/tex], or approximately 3.91.

I hope this helps!

Answer:

10b - 60

Step-by-step explanation:

So the question is asking to use the Distributive Property with giving the equation 10(b - 6).

So the distributive property is just multiplying the number outside the parenthesis with the numbers inside the parenthesis, so lets implement that :

(10 * b - 6 * 10)

10b - 60

Answer:

The answer is 6

Step-by-step explanation:

10(b - 6) =

10 x b = 10b

10 x 6 = 60

10b = 60

10/10  10/60

= 6

plz mark brainliest