8TH GRADE MATH PLEASE HELL

Answer: 16.6

Step-by-step explanation:

a² + b² = c²

7² + b² 18²

49 + b² = 324

Subtract 49 from both sides

b² = 275

√b² = √275

b = 16.583

16.583 ≈ 16.6

Answer:

33.33333333333333%

Step-by-step explanation:

the increase = 100 ₹

then percentage of increase is = 100/300 *100 = 33.33333333333333%

Answer:

33.3333333333%

Step-by-step explanation:

[tex]\frac{400-300}{300} x 100[/tex]

33.333333333%

Answer:

x+3 > 21

the is a line under the greater than symbol

Step-by-step explanation:

Answer:

idek

Step-by-step explanation:

Answer:

mi no inglés no te podré contestar perdon

Answer:

(Hi!!) I do not know what you need in this Problem but first of all, if your looking for who typed the fastest it was Ray.

Answer:

[tex] X =

\begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}[/tex]

Step-by-step explanation:

[tex] \begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix} +X = \begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}[/tex]

[tex] X =

\begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}-\begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix}[/tex]

[tex] X =

\begin{bmatrix} - 5-(-1) & - 1-(-2)\\ 2-4 & 1-8\end{bmatrix}[/tex]

[tex] X =

\begin{bmatrix} - 5+1 & - 1+2\\ 2-4 & 1-8\end{bmatrix}[/tex]

[tex] X =

\begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}[/tex]

Step-by-step explanation:

There are two page above i think it be useful

Thanks for this question :)

Answer:

[tex] a = \dfrac{5}{18} [/tex]

[tex]b = -\dfrac{1}{18}[/tex]

Step-by-step explanation:

You need to rationalize the fraction.

[tex] \dfrac{1}{5 + \sqrt{7}} = a + b\sqrt{7} [/tex]

[tex] \dfrac{1}{5 + \sqrt{7}} \times \dfrac{5 - \sqrt{7}}{5 - \sqrt{7}} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5 - \sqrt{7}}{25 - 7} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5 - \sqrt{7}}{18} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5}{18} - \dfrac{1}{18}\sqrt{7} = a + b\sqrt{7} [/tex]

[tex] a = \dfrac{5}{18} [/tex]

[tex]b = -\dfrac{1}{18}[/tex]

Answer:

the awnse is 2 i hope i helped

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

3 x 4 / 6

3 x 4 = 12

12 / 6 = 2

PEMDAS

M - multiplication

D - division

Multiplication comes before division.

Answer:

B

Step-by-step explanation:

Quadrant 1 is (+,+), quadrant 2 is (-,+), quadrant 3 (-,-), and quadrant 4 is (+,-).

Answer:

In cubic millimeter 15 in us teaspoon 0.00304326

Step-by-step explanation:

Hope I helped?

Answer:

x=10

Step-by-step explanation:

Let's solve your equation step-by-step.

(x−3)(x−5)=35

Step 1: Simplify both sides of the equation.

x2−8x+15=35

Step 2: Subtract 35 from both sides.

x2−8x+15−35=35−35

x2−8x−20=0

Step 3: Factor left side of equation.

(x+2)(x−10)=0

Step 4: Set factors equal to 0.

x+2=0 or x−10=0

x=−2 or x=10

Answer:

-1

Step-by-step explanation:

negative 1

Answer:

x = 17.5

Step-by-step explanation:

[tex] \frac{16}{10} = \frac{28}{x} [/tex] (angle bisector theorem)

Cross multiply

16 × x = 28 × 10

16x = 280

Divide both sides by 16

x = 280/16

x = 17.5

Answer:

X=-2

Step-by-step explanation:

4x-2(-3x)= -20

4x+6x=-20

10x=-20

/10    /10

x=-2

Hope this helps!

Answer:

c.

Step-by-step explanation:

hopes this helps

Answer:

the question is incorrect as GN does not exist. please rewrite the question.

Answer:

Step-by-step explanation:

There is nothing more to do than read the answers

Answer:

Step-by-step explanation:

The area of the rectangle is 240 square inches if the length of a rectangle is  8 inches longer than the width. If the ratio of the length to the perimeter is 5:16.

It is defined as the area occupied by the rectangle in two-dimensional planner geometry.

The area of a rectangle can be calculated using the following formula:

Rectangle area = length x width

It is given that:

The length of a rectangle is  8 inches longer than the width. If the ratio of the length to the perimeter is 5:16

As we know, the two-dimensional geometry in which the angle between the adjacent sides is 90 degrees. It is a type of quadrilateral.

Let l and w be the length and width of the rectangle:

l = 8 + w

w = l - 8

l/P = 5/16  (the length to the perimeter is 5:16)

P is the perimeter of the rectangle.

P = 2(l + w)

l/[2(l + w)] = 5/16

16l = 10(l + w)

8l = 5(l + l - 8)

8l = 10l - 40

2l = 40

l =20 inches

w = 20 - 8 = 12 inches

Area = 20x12 = 240 square inches

Thus, the area of the rectangle is 240 square inches if the length of a rectangle is  8 inches longer than the width. If the ratio of the length to the perimeter is 5:16.

Learn more about the rectangle here:

https://brainly.com/question/15019502

#SPJ2

Answer:

13:8

is the answer because if you take the games won and lost this is what you get

Step-by-step explanation:

Do you mean exponential form as in scientific notation or as in prime factorization.

Now matter I will do both.

As in scientific notation.

200*75

=150*100

=1.5*10000

=1.5*10^4

As in prime factorization.

200*75

=2^3*5^2*3*5^2

=2^3 * 3 * 5^4

Do the one your teacher ask for :) Hope it helps!

[tex]6 \times (w + 5) = 7[/tex]

Answer:

6 x w (+2)<4+3i>

Step-by-step explanation:

Answer:

The formula for the volume of a cube is V=s3 where V is the volume and s is the length of a side solve the formula for s. 2.

Step-by-step explanation:

I think.

Step-by-step explanation:

i was busy so i did this much ...will solve later

Answer:

I had it before and it is 15 ft²

What 8?

There is no 8 in the problem.

The answer is not a specific value for n.

3n < 18

Divide both sides by 3.

3n/3 < 18/3

n < 6

ANSWER: n < 6

What does the answer mean?

It means that n must be less than 6 to make the original inequality a true statement.

Answer: the company should sell there phones for 250

Step-by-step explanation: took the test

Answer:

9. 6 cups

10. 66 in

11. 66 ft

12. 1320 ft

Hope that helps!

Step-by-step explanation:

9. 3 pt = 6 c

10. 5 1/2 ft = 66 in

11. 22 yd = 66 ft

12. 1/4 mi = 1320 ft

Hope this helped! :)