I never understand math

Step-by-step explanation:

S=b*h/2=8*10/2=40m2

40*4=160m²

Answer:

60 m2

Step-by-step

i did that before hope this helps :)

Answer:

[tex]\boxed {\sf x=6}[/tex]

Step-by-step explanation:

[tex]\sf 5(x - 3) + 2 = 5(2x - 8) - 3[/tex]

Use the Distributive property :

[tex]\boxed { \sf Multiply\: 5\: by \:x\: and \:5\: by\: 3:}[/tex]

→ [tex]\sf 5x-15+2[/tex]

→ [tex]\sf -15+2[/tex]

[tex]\sf =-13[/tex]

[tex]\sf 5x-13[/tex]

______________________

[tex]\sf 5\left(2x-8\right)-3[/tex]

[tex]\boxed {\sf Multiply\: 5 \: by \: 2x \: and \: 5\: by\: -8:}[/tex]

→ [tex]\sf 10x-40-3[/tex]

→ [tex]\sf -40-3=-43[/tex]

[tex]\sf 10x-43[/tex]

_______________

[tex]\sf 5x-13=10x-43[/tex]

[tex]\boxed {\sf Add\: 13 \:to\: both\: sides:}[/tex]

[tex]\sf 5x-13+13=10x-43+13[/tex]

[tex]\sf 5x=10x-30[/tex]

[tex]\boxed{\sf Subtract\: -10x\: from\: both\: sides:}[/tex]

[tex]\sf 5x-10x=10x-30-10x[/tex]

[tex]\sf -5x=-30[/tex]

[tex]\boxed{\sf Divide \:both \:sides\: by \:-5:}[/tex]

[tex]\sf \cfrac{-5x}{-5}=\cfrac{-30}{-5}[/tex]

[tex]\sf x=6[/tex]

___________________________

Answer:

x = 6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Distributive Property

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define

Identify

5(x - 3) + 2 = 5(2x - 8) - 3

Step 2: Solve for x

Derivative Functions

The derivative function gives the derivative of a function at each point in the domain of the original function for which the derivative is defined. We can formally define a derivative function as follows.

Definition:

let f be a function. The derivative function, denoted by f', is the function whose domain consists of those values of  x  such that the following limit exists:

[tex]f'(x)= \lim_\\ \ \\ \frac{f(x+h)-f(x)}{h} {h \to 0}[/tex]

Answer:

17.5

Step-by-step explanation:

The ratio of "pure drug" to liquid is 35:150

Therefore to evaluate for 75 mls we get the ratio 75/2150 or simply 1/2

multiply 35 by the ratio 1/2

35/2=17.5

Answer:

4.15 is same 4.15

0.07 is also same

Last one is 5.08 x 10^290

9514 1404 393

Answer:

  16.8 inches

Step-by-step explanation:

The length is 7/5 = 1.4 times the width. The length of the enlargement will be ...

  (12 in)×1.4 = 16.8 in

The large photo will be 16.8 inches long.

Answer:

Assuming the question posed is to find the values of x thtat satisfy the equation f(x) = x^2 - 9x -  7, this is a quadratic equation of the form Ax^2 + Bx + C which has the closed-form solution x = (-b +/- Sqrt[b^2 - 4 ac])/(2a) - widely known as the "quadratic equation."

Step-by-step explanation:

By applying the quadratic equation, we find that the solutions to this equation are

x = 1/2 * (9-Sqrt[109])

x = 1/2 * (9+Sqrt[109])

Step-by-step explanation:

−5y)(20y−23x)

x(6x−5y)−4(6x−5y)

2

=(6x−5y)(x−4(6x−5y))

=(6x−5y)(x−24x+20y)

=(6x−5y)(20y−23x)

Answer:

1+1= 2

umm r u ok

have a nice day <3

(i)To make 8 pancakes 250 ml milk is needed. So, to make 4 pancakes=

(250/8)×4=120 ml is needed!

(ii)To make 8 pancakes 5g butter is needed and to make 12 pancakes=

(5/8)×12=7.5 g butter is needed!

Answer:

B) [tex]x = \sqrt{60}[/tex]

Step-by-step explanation:

1. As you can see from the image, there are two right triangles in the isosceles triangle. The base of each right triangle is 2 (because 4 ÷ 2 = 2), and the hypotenuse is 8.

2. Let's use Pythagorean Theorem to find the height of each right triangle, which will also give us the height of the isosceles triangle: [tex]a^2 + b^2 = c^2[/tex], where a = height, b = base, and c= hypotenuse.

3. The√(60) is the height of each right triangle, and it's also the height of the isosceles triangle. Therefore, the answer is B) x = √60.

Answer:

15 hrs

Step-by-step explanation:

10 miles= 3hrs

50miles/10miles= 5

5(3hrs)=15 hrs

Answer:

10 miles = 3 hours

10 x 5 = 50

3 x 5 = 15

Bredt rode his bicy for 15 hours if he rode for 50 miles.

Step-by-step explanation:

Answer:

84,700 is the answer. If I multiply

Answer:

D

Step-by-step explanation:

It is a positive gradient therefore the answers cannot be negative. Since it is an increase of 4 dollars it is option D.

Answer:

pablo and lakaka vvvvvvvvvvvvvv

Step-by-step explanation:

Part to part ratio

For 2 oranges and five bananas

2oranges:5bananas(2:5)

Part to whole ratio

2oranges:7pieces of fruit(2:7)

5bananas:7pieces of fruit (5:7)

All the best!

Answer: 4 hours

Step-by-step explanation: 15-5=10 10/2.50 =4

Answer:

4 hours

Step-by-step explanation:

$15 is our initial value, and we have a flat fee of $5

15-5=10

We have a remaining $10 left to be divided by the $2.50 per hour

10÷2.50=4

4 tells us the number of hours

Answer:

4, 144, 145 are not Pythagorean triplets

Step-by-step explanation:

According tp Pythagoras theorem,

Sum of squares of two sides must be equal to square of the third side.

By Pythagoras theorem,

24^2 + 144^2 = 145^2

576 + 20736 = 21025

           21312 ≠ 21025

Numbers 24, 144, 145 does not satisfy the Pythagoras theorem.

So, 24, 144, 145 are not Pythagorean triplets.

Hence, checked.

Answer:

Answer: 26 inches

Step-by-step explanation: 6.5 x 8 = 52/2 = 26  area of a triangle

Answer:

the correct answer would be 1,800

Answer:

A) - 5 3/7

B) - 4 6/7

C) - 4 3/7

D) 4 2/7

E) 5 1/7

Step-by-step explanation:

- 5 3/7 ≈ - 5.43

- 4 6/7 ≈ - 4.86

-4 3/7 ≈ - 4.43

4 2/7 ≈ 4.29

5 1/7 ≈ 5.14

Answer:

2x - 12

Step-by-step explanation:

Given:

-3(6x+4)+20x

Distribute:

-18x-12+20x

Combine like terms:

2x-12

Hope this helps, have a nice day :))

Answer:

3 8 + 1 2

i searched it

Answer:

Step-by-step explanation:

Bà của Mike đã mở một tài khoản tiết kiệm đứng tên Mike và gửi một số tiền vào tài khoản. Tài khoản trả lãi suất đơn giản hàng năm là 11%. Sau 14 năm, tiền lãi thu được trên tài khoản là $ 3,080

Answer:

[tex]y = \frac{8x + 6}{2}[/tex] = 4x + 3

Step-by-step explanation:

2y = 8x + 6

y = (8x + 6) / 2

y = 8x / 2 + 6 / 2

y = 4x + 3

Answer:

Is there a question?

Step-by-step explanation:

The Pythagorean theorem states that for any right triangle with legs of length “a” and “b” and a hypotenuse of length “c,” the lengths of the sides always satisfy the relationship, “a^2 + b^2 = c^2.” In other words, the sum of the squares of the lengths of the two legs of a triangle is equal to the square of its hypotenuse. The formula is alternatively written with the hypotenuse length isolated (i.e., c = Sqrt(a^2 + b^2).

This is the definition.

Answer:

The answer is $88.90

Step-by-step explanation:

$253.99÷.35=88.896. Rounding up the 6 makes the 89 to 90.