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3 years ago

8

( a+b )^2 = ...........................

2 answers:

stepladder [879]3 years ago

5 0

Answer:

$a^{2} + 2ab +b^{2}$

svlad2 [7]3 years ago

5 0

answer: a^2+2ab+b^2

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What is the square root of 5x^2 = 300

vesna_86 [32]

So, values of x are: $x=2\sqrt{15},\,\,x=-2\sqrt{15}$

Step-by-step explanation:

We need to find the square root of 5x^2 = 300

Writing in mathematical form:

$5x^2=300$

Divide both sides by 5

$\frac{5x^2}{5}=\frac{300}{5}$

$x^2=60$

Taking square root on both sides

$\sqrt{x^2}=\sqrt{60}$

$x=\pm (\sqrt{2\times 2\times 3\times 5})$

$x=\pm (\sqrt{2^2 \times 3\times 5})$

$x=\pm (2\sqrt{3\times 5})$

$x=\pm (2\sqrt{15})$

$x=2\sqrt{15},\,\,x=-2\sqrt{15}$

So, values of x are: $x=2\sqrt{15},\,\,x=-2\sqrt{15}$

Keywords: Square root

Learn more about square root at:

#learnwithBrainly

7 0

3 years ago

Find the missing length of the triangle.

egoroff_w [7]

Step-by-step explanation:

apply Pythagorean theorem. if a^2 + b^2 = c^2 then

b = √(15^2 - 9^2) = 12.

12 is answer

5 0

2 years ago

4x+2y=-24<br> -4x+y = 12

allsm [11]

Answer:

Step-by-step explanation:

4x+2y = -24 -------------(i)

<u> -4x+y = 12 -</u>------------(ii)

add (i) &(ii) 3y = -12

y = -12/3

y = -4

Put y = (-4) in (i)

4x + 2*(-4) = -24

4x - 8 = -24

4x = -24 + 8

4x = -16

x = -16/4

x = -4

6 0

3 years ago

5a +4b+c-3a-c+4b simplified

MAVERICK [17]

Answer:

2a + 8b

Step-by-step explanation:

4 0

3 years ago

Find the volume of a cylinder below . The formula for the volume of a cylinder is . The radius of the circle is represented by r

lapo4ka [179]

Answer:

The volume of the cylinder V = 942 cm³

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the graph

The height of the cylinder (h) = 12cm

The diameter of the cylinder d = 10cm

The radius of the cylinder

d = 2r

r = $\frac{10}{2}$

r = 5 cm

<u><em>Step(ii):-</em></u>

The Volume of the cylinder

V = π r² h

V = π (5)²(12)

V = 300π cubic centimeter

V = 300 × 3.14

V = 942 cm³

<u><em>Final answer:-</em></u>

Volume of the cylinder V = 942 cm³

3 0

2 years ago