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3 years ago

Evaluate this expression

Mathematics

2 answers:

Deffense [45]3 years ago

6 0

8 x(1/8 x 18)
8 x (1/4 x 9)
8 x 9/4
2 x 9
= 18

xenn [34]3 years ago

4 0

Answer:

Step-by-step explanation:

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3 years ago

A Bird Is flying 5 m/s. How far will it travel if it flies for 3minutes

Diano4ka-milaya [45]

The bird is flying at 5m/s, so
1 sec = 5 m

It flies for 3 mins
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7 0

3 years ago

In triangle RST, m∠R > m∠S + m∠T. Which must be true of triangle RST? Check all that applym∠R > 90°

Sedbober [7]

Answer: The correct statements are,

m∠R > 90°

m∠S + m∠T < 90°

m∠R > m∠T

m∠R > m∠S

Step-by-step explanation:

Here, RST is a triangle,

Therefore, m∠R+m∠S+m∠T = 180° ⇒ m∠S+m∠T = 180° - m∠R

Given: m∠R > m∠S + m∠T

⇒ - m∠R < - (m∠S + m∠T) (by multiplying-1 on both sides)

⇒ 180°- m∠R < 180° - (m∠S + m∠T) (by adding 180° on both sides)

⇒ m∠S+m∠T < 180° - (m∠S + m∠T)

⇒ m∠S+m∠T+ m∠S+m∠T < 180° ( by adding m∠S + m∠T on both sides)

⇒ 2(m∠S+m∠T) < 180°

⇒ m∠S+m∠T < 90°

⇒ m∠R > 90° ( because m∠R+m∠S+m∠T = 180° )

Again, m∠R > m∠S + m∠T

⇒ m∠R > m∠S and m∠R > m∠T

Thus, Option first second fourth and fifth are correct.

Note: m∠S = m∠T is only possible when m∠R=90° (but it is not given)

That is why m∠S = m∠T is not correct.

And, there are not enough information to prove m∠S > m∠T

That is why m∠S > m∠T is also incorrect.

3 0

3 years ago

Read 2 more answers

What are the solutions of the equation x squared equals 4? Use a graph of the related function.

Harman [31]

In the graph of quadratic equation, the parabola passes through the points left parenthesis (-2,0) right parenthesis, left parenthesis (0,-4) right parenthesis, and left parenthesis (2,0) right parenthesis.

<h3>What is a quadratic equation?</h3>

A quadratic equation is the equation in which the unknown variable is one and the highest power of the unknown variable is two.

The standard form of the quadratic equation is,

$ax^2+bx+c=0$

Here,(a,b, c) is the real numbers and (x) is the variable.

The given quadratic equation is,

$f(x)=x^2+4$

Equate the equation to zero to solve it further,

$x^2=4\\x^2-4=0\\x^2=4\\x=\sqrt{4}\\x=\pm2$

Thus, the solution of the equation is +2 and -2. The graph of the equation is attached below.

Hence, in the graph of quadratic equation, the parabola passes through the points left parenthesis (-2,0) right parenthesis, left parenthesis (0,-4) right parenthesis, and left parenthesis (2,0) right parenthesis.

Learn more about the quadratic equation here;

brainly.com/question/1214333

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