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3 years ago

X^2+5*x^3+7 Solve pls lol

Mathematics

2 answers:

bija089 [108]3 years ago

8 0

Answer:

5x^3+x^2+7

Step-by-step explanation:

sweet [91]3 years ago

3 0

don't know sorry

Step-by-step explanation:

sorry very very school

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3(125-4)-18 i need help

ruslelena [56]

The answer would be 345.

To solve, simply lay your equation

3(125−4)−18

Step 1: Solve the parenthesis.

=(3)(121)−18

Step 2: Multiply parenthesis by 3.

=363−18

=345

So the answer for this problem is 345.

5 0

4 years ago

Read 2 more answers

raj and his sister zia are both at secondary school. Raj is three years older than zia. the sum of the squares of their ages is

Cerrena [4.2K]

Let Zia's age be = x years

Raj is three years older than Zia, so Raj's age = x+3 years

As the sum of the squares of their ages is 369, so

$x^{2}+(x+3)^{2}=369$

$x^{2}+x^{2}+6x+9=369$

$2x^{2}+6x+9=369$

$2x^{2}+6x-360=0$

Factoring 2 out we have,

$x^{2}+3x-180=0$

Now solving this equation,

$x^{2}+15x-12x-180=0$

$x(x+15)-12(x+15)$

$(x+15)(x-12)$

x=-15 and x=12

Neglect the negative value as x cannot be negative

So x=12

Hence, Zia's age is 12 years and

Raj's age is 12+3 = 15 years

4 0

3 years ago

What is 15 divided by 33

aliina [53]

.45 repeating. That could also be used by a calculator to solve haha.

4 0

4 years ago

Determine whether or not the two equations below have the same solution. In two or more complete sentences, explain your rationa

Artist 52 [7]

Answer:

Yes, they have the same solution.

Step-by-step explanation:

The steps in solving a two-step equation are to simplify by using

The inverse of addition or subtraction and then
The inverse of multiplication or division

Equation 1

$\dfrac{2}{3}x + \dfrac{3}{4} = 8$

(a) Inverse of addition

$\begin{array}{rcl}\dfrac{2}{3}x + \dfrac{3}{4} - \dfrac{3}{4}& = & 8 - \dfrac{3}{4}\\\\\dfrac{2}{3}x & = & \dfrac{29}{4}\\\end{array}$

(b) Inverse of multiplication

$\begin{array}{rcl}\left (\dfrac{2x}{3}\right ) \left (\dfrac{3}{2}\right ) & = & \left (\dfrac{29}{4}\right ) \left ( \dfrac{3}{2} \right ) \\\\x & = & \dfrac{87}{8}\\\end{array}$

Equation 2

8x = 87

(a) Inverse of multiplication

$\begin{array}{rcl}\dfrac{8x}{8} & = & \dfrac{87}{8}\\\\x & = & \dfrac{87}{8}\\\end{array}$

The two equations have the same solution.

For the first equation, I used the inverse of addition and then the inverse of multiplication to get the value of x.

The second equation needed only the inverse of multiplication.

Both solutions were the same.

8 0

4 years ago

-32 repeating rational or irrational

AlekseyPX

Answer:

rational

Step-by-step explanation:

it is rational becasue you can write it as a fraction

8 0

4 years ago

Read 2 more answers