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2 years ago

Pls help me I don't understand

Mathematics

2 answers:

frutty [35]2 years ago

8 0

Answer:

$d. \: \: \: 25 {x}^{6}$

Step-by-step explanation:

Given,

Side of the square

$= 5 {x}^{3}$

Therefore, area of the square = side × side

$= {5x}^{3} \times 5 {x}^{3}$

$= 5 \times 5 \times {x}^{3 + 3}$

$= 25 {x}^{6}$

Serga [27]2 years ago

7 0

The formula for calculating the area of a square is A=a^2. (a=side)
There are multiple ways to solve this but I’m gonna use the simple way to explain.
All we have to do here is take the side times the side:
5x^3•5x^3
5•5=25
**Careful** exponents are added, not multiplied.
25x^6 is the answer

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If 2a+b=6 and a−6=b, what is the value of a?

earnstyle [38]

Step-by-step explanation:

Given

2a + b = 6......equation 1

a - 6 = b

a = b + 6........equation 2

Putting equation 2 in equation 1

2 ( b + 6 ) + b = 6

2b + 12 + b = 6

3b = 6 - 12

3b = - 6

b = - 6 / 3

Therefore b = - 2

Now

a = - 2 + 6 = 4

hope it will help :)

3 0

3 years ago

Read 2 more answers

Find the quotient simplify your answers a+3 over a divided by 8 over a

mihalych1998 [28]

ANSWER

$\frac{a + 3}{8}$

EXPLANATION

We want to simplify

$\frac{a + 3}{a} \div \frac{8}{a}$

We multiply the first fraction by the reciprocal of the second fraction to obtain,

$\frac{a + 3}{a} \times \frac{a}{8}$

We cancel the common factors to get,

$\frac{a + 3}{1} \times \frac{1}{8}$

This gives us,

$\frac{a + 3}{8}$

4 0

2 years ago

A poster is to have a total area of 125 cm2. There is a margin round the edges of 6 cm at the top and 4 cm at the sides and bott

jeka57 [31]

Answer:

The correct answer is 15 cm.

Step-by-step explanation:

Let the width of the required poster be a cm.

We need to have a 6 cm margin at the top and a 4 cm margin at the bottom. Thus total margin combining top and bottom is 10 cm.

Similarly total margin combining both the sides is (4+4=) 8 cm.

So the required printing area of the poster is given by {( a-10 ) × ( a - 8) } $cm^{2}$

This area is equal to 125 $cm^{2}$ as per as the given problem.

∴ (a - 10) × (a - 8) = 125

⇒ $a^{2}$ - 18 a +80 -125 =0

⇒ $a^{2}$ - 18 a -45 = 0

⇒ (a-15) (a-3) = 0

By law of trichotomy the possible values of a are 15 and 3.

But a=3 is absurd as a $>$ 4.

Thus the required answer is 15 cm.

7 0

2 years ago

Read 2 more answers

Find the smallest possible solution to 2/3x^2=24

Bezzdna [24]

$\dfrac{2}{3} x^2 = 24$

---------------------------------------------------------------------
Divide by 2/3 on both sides :
---------------------------------------------------------------------
$x^2 = 24 \div \dfrac{2}{3}$

---------------------------------------------------------------------
Change the divide fraction to multiplication fraction :
---------------------------------------------------------------------
$x^2 = 24 \times \dfrac{3}{2}$

---------------------------------------------------------------------
Simplify :
---------------------------------------------------------------------
$x^2 = 36$

---------------------------------------------------------------------
Square root both sides :
---------------------------------------------------------------------
$x = \pm \sqrt{36}$

---------------------------------------------------------------------
Answer :
---------------------------------------------------------------------
$x = \pm6$

---------------------------------------------------------------------
Answer: The smallest possible value of x is -6
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4 0

3 years ago

The number of students on the football team is 1 3/4 times the number on the basketball team. there are 16 students on the baske

Orlov [11]

Number of students on the football team: 1 3/4x16= 12
There are fewer than 16 on the football team.
There are 12 students in the football team.

8 0

3 years ago

Pls help me I don't understand​

Pls help me I don't understand