All categories

3 years ago

1

Mathematics

1 answer:

notka56 [123]3 years ago

7 0

7 divided by 2 is 3.5 therefore the answer is:3.5

You might be interested in

Which undefined term is used to define an angle

Gre4nikov [31]

Answer:

The undefined term which is used to define an angle is line i.e., . Further explanation: In geometry the three terms which are considered to be undefined are line, point and plane.

4 0

3 years ago

Read 2 more answers

Find the volume of the shape

jeka57 [31]

Answer:

i think. 8 times 12 = 96 times 20 = 1,920

7 0

2 years ago

Diego is solving the equation x^2-12x = 21

uysha [10]

Answer:

The solutions to the quadratic equations will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

Step-by-step explanation:

Given the expression

$x^2-12x\:=\:21$

Let us solve the equation by completing the square

$x^2-12x\:=\:21$

Add (-6)² to both sides

$x^2-12x+\left(-6\right)^2=21+\left(-6\right)^2$

simplify

$x^2-12x+\left(-6\right)^2=57$

Apply perfect square formula: (a-b)² = a²-2ab+b²

i.e.

$x^2-12x+\left(-6\right)^2=\left(x-6\right)^2$

so the expression becomes

$\left(x-6\right)^2=57$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-6=\sqrt{57}$

add 6 to both sides

$x-6+6=\sqrt{57}+6$

Simplify

$x=\sqrt{57}+6$

also solving

$x-6=-\sqrt{57}$

add 6 to both sides

$x-6+6=-\sqrt{57}+6$

Simplify

$x=-\sqrt{57}+6$

Therefore, the solutions to the quadratic equation will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

5 0

3 years ago

PLS HELP MEE!!

photoshop1234 [79]

Answer:

25.56 is the surface area of the pool.

Hope this helps! :)

4 0

3 years ago

Read 2 more answers

Please help me do this question

Minchanka [31]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers