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2 years ago

Define ratio (maths short definition)

2 answers:

4 0

A ratio can be defined as the relationship or comparison between two numbers of the same unit to check how bigger is one number than the other one. For example, if the number of marks scored in a test is 7 out of 10, then the ratio of marks obtained to the total number of marks is written as 7:10.

san4es73 [151]2 years ago

3 0

Answer:

division

Step-by-step explanation:

ratio compares 2 numbers by dividing them

example

2 out of 3 dentists like gum

2 ÷ 3 = .67 = 67%

so you can say

67% of dentists like gum

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Triangle R T S is sitting on a horizontal line. Line S R extends through point Q to form exterior angle T R Q. Angle R T S is (2

Firlakuza [10]

Answer:

The value of x is 3 ⇒ 2nd answer

Step-by-step explanation:

An exterior angle is the angle between one side of a triangle and the

extension of an adjacent side

The measure of an exterior angle at any vertex of a triangle equal the

sum of the measures of the two opposite interior angles

- Triangle R T S is sitting on a horizontal line

- Line S R extends through point Q to form exterior angle T R Q

- m∠RTS is (25 x)°, m∠TSR is (57 + x)° , m∠TRQ is (45 x)°

* Lets find the value of x

∵ ∠TRQ is an exterior angle of Δ RTS at the vertex R

∵ The opposite interior angles to vertex R are ∠RTS and ∠TSR

∴ m∠TRQ = m∠RTS + m∠TSR ⇒ as the rule above

∵ m∠TRQ = (45 x)°

∵ m∠RTS = (25 x)°

∵ m∠TSR = (57 + x)°

Substitute these measures in the equation above

∴ 45 x = 25 x + 57 + x

∴ 45 x = 26 x + 57

Subtract 26 x from both sides

∴ 19 x = 57

Divide both sides by 19

∴ x = 3

* The value of x is 3

3 0

4 years ago

Read 2 more answers

The lengths of the sides of triangle ABC are consecutive whole numbers. The median from angle A is perpendicular to the angle bi

KengaRu [80]

The Mirian is a bc it is not a problem

6 0

2 years ago

Read 2 more answers

Help please!!! Systems Of Equations

Illusion [34]

$6x+3y=-3\qquad\text{subtract 6x from both sides}\\3y=-6x-3\qquad\text{divide both sides by 3}\\y=-2x-1\\\\\left\{\begin{array}{ccc}y=-2x+5\\y=-2x-1\end{array}\right\\\\(1)\qquad y=-2x+5\\\\for\ x=0\to y=-2(0)+5=0+5=5\to(0,\ 5)\\for\ x=2\to y=-2(2)+5=-4+5=1\to(2,\ 1)\\\\(2)\qquad y=-2x-1\\\\for\ x=0\to y=-2(0)-1=0-1=-1\to(0,\ -1)\\for\ x=-2\to y=-2(-2)-1=4-1=3\to(-2,\ 3)\\\\Answer:\ NO\ SOLUTION\ \text{(An inconsistent system of equations)}$

$4x-6y=24\qquad\text{subtract 4x from both sides}\\-6y=-4x+24\qquad\text{divide both sides by (-4)}\\y=\dfrac{2}{3}x-4\\\\\left\{\begin{array}{ccc}y=-\dfrac{1}{3}x+2\\\\y=\dfrac{2}{3}x-4\end{array}\right\\\\(1)\qquad y=-\dfrac{1}{3}x+2\\\\for\ x=0\to y=-\dfrac{1}{3}(0)+2=0+2=2\to(0,\ 2)\\\\for\ x=3\to y=-\dfrac{1}{3}(3)+3=-1+2=1\to(3,\ 1)\\\\(2)\qquad y=\dfrac{2}{3}x-4\\\\for\ x=0\to y=\dfrac{2}{3}(0)-4=0-4=-4\to(0,\ -4)\\\\for\ x=3\to y=\dfrac{2}{3}(3)-4=2-4=-\to(3,\ -2)\\\\Answer:\ (6,\ 0)\to x=6\ and\ y=0$

4 0

3 years ago

Help plz plz plz plz plz plz plz

Umnica [9.8K]

63 and 5/8 should be your answer hope this helped :)

5 0

4 years ago

Consider a circle whose size can vary. Let r represent the radius of the circle (in cm) and let C represent the circumference of

Firdavs [7]

Answer:

$g (15)$ represents the radius (in cm) of a circle whose circumference is 15 cm

if $g (a) = 15$ , then a represents the circumference (in cm) of a circle whose radius is 15cm

Step-by-step explanation:

In a circle the following relationship can be posed:

$C = 2 \pi r$

Let g be a function that determines the radius of the circle from the value of its circumference, so, you have:

$g (C) =\frac{C}{2\pi}$

Thus, $g (15)$ represents the radius (in cm) of a circle whose circumference is 15 cm. You have to $g (15) =\frac{15}{2\pi}$ .

On the other hand, if $g (a) = 15$ , then $a$ represents the circumference (in cm) of a circle whose radius is 15cm. You have to $a=2 \pi(15) = 30 \pi$

4 0

3 years ago

Define ratio (maths short definition)​

Define ratio (maths short definition)