All categories

3 years ago

Help me plzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics

1 answer:

garik1379 [7]3 years ago

6 0

B. $\frac{5}{8}, 2.5, \sqrt{10}$

Though ⅝ and 2.5 can be written in form of p/q where p is any real number and q ≠ 0.

But, in case of $\sqrt{10}$ , the decimal expansion of this number is non - terminating, non - repeating.

⇒ This is an irrational number.

You might be interested in

Perimeter of the triangle below ?

Paha777 [63]

Answer:

31x^2-13x

Step-by-step explanation:

to find the perimeter of a triangle, add all sides.

P=a+b+c

P=(5x^2+x)+(8x^2-3x)+(18x^2-11x)

combine like terms

5x^2+8x^2-18x^2= 31x^2

x-3x-11x= -13x

31x^2-13x

5 0

4 years ago

What kind of triangles does the Pythagorean theorem work for?

Tasya [4]

Answer:

A. Right angle traingle Is the answer

5 0

3 years ago

Read 2 more answers

Which expression is equivalent to x2+3x+ 3+ (2x+134+15) - (x+5))

tia_tia [17]

Answer:

$x^{2} + ( 4x) + (147)$

Step-by-step explanation:

Here, the given expression is

$x^{2} +3x +3 + (2x+134+15) - (x+5)$

Now, simplifying the brackets, we get

$x^{2} +3x +3 + (2x+134+15) - (x+5)$ = $x^{2} +3x +3 + 2x+134+15 - x -5$

Now, operate on the like terms.

= $x^{2} + ( 3x + 2x -x) + (134 + 15 + 3 -5)$

= $x^{2} + ( 4x) + (147)$

Hence, the given expression is simplified to the quadratic equation $x^{2} + ( 4x) + (147)$

5 0

3 years ago

What is the value of the expression x^3y^2/6 + x^2y^2 x = -2 and y = 3?

Volgvan

$\huge\text{Hey there!}$

$\mathsf{\dfrac{(-2^3)(3^2)}{6}+(-2^2)(3^2)}$

$\mathsf{(-2)^3=\bf -8}$

$\mathsf{= \dfrac{-8(3^2)}{6}+(-2^2)(3^2)}$

$\mathsf{3^2=\bf 9}$

$\mathsf{= \dfrac{(-8)(9)}{6}+(-2^2)(3^2)}$

$\mathsf{-8(9)= \bf -72}$

$\mathsf{= \dfrac{-72}{6}+(-2^2)+(3^2)}$

$\mathsf{\dfrac{-72}{6}=\bf -12}$

$\mathsf{= -12+(-2)^2(3^2)}$

$\mathsf{-2^2=\bf 4}$

$\mathsf{= -12+4(3^2)}$

$\mathsf{3^2=\bf 9}$

$\mathsf{= -12+4(9)}$

$\mathsf{4(9)= \bf 36}$

$\mathsf{-12 + 36 = \bf 24}$

$\boxed{\boxed{\large\text{Answer: \huge\bf Option C. 24}}}\huge\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{Amphitrite1040:)}$

5 0

4 years ago

-5x + 3y = -8<br> 3x - 7y= -3

AnnZ [28]

Answer:

x = 5/2 y = 3/2

Step-by-step explanation:

You need to write what the question is besides the information in the problem. I assume the question is to find the values of x and y.

Going on that premise, Let equation (1) be -5x + 3y = -8 and

equation (2) be 3x - 7y = -3

Lets multiply (1) by 3 and (2) by 5 and we get equations (4) and (5)

(4) -15x + 9y = -24 and (5) 15x - 35y = -15 Now add (4) and (5)

-15x + 9y = -24

-26y = - 39

y = 3/2 Now substitute y = 3/2 in equation (1). -5x + 3)(3/2) = -8

-5x + 9/2 = -8

-10x + 9 = -16

-10x = -25

x = -25/-10 = 5/2

x = 5/2 y = 3/2

Check: Substitute your answers into equation (2) and see if they work.

3(5/2) -7(3/2) = 15/2 - 21/2 = -6/2 = -3 Hooray! We have the correct values for x and y that makes each equation true

8 0

3 years ago