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3 years ago

Algebra about ages please help

Mathematics

1 answer:

valentinak56 [21]3 years ago

3 0

To solve this problem, we need to recognize that Harry's age is given as "n". We can use this value and the given information to write expressions representing each person's age.

For Example, Jo is 2 years older than Harry and Harry's age is represented by the variable n. This means that n (Harry's age) plus 2 would equal Jo's age. This can be represented by the expression: n +2.

Next, we know that Kate is twice as old as Jo, and Jo's age is represented by the expression n+2. This means that 2 times Jo's age would be equal to Kate's age, or Kate's age = 2(n+2) or 2n +4.

Therefore, your answer is that Jo's age is n + 2 and Kate's age is 2n + 4.

Hope this helps!

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This is geometry on delta math I have no idea how to do it please help me

deff fn [24]

Answer:

x = 9

Step-by-step explanation:

We know sum of interior angles of a polygon = $(n-2)\times 180$

For a triangle (having n = 3),

Sum of interior angles = (3 - 2)×180°

= 180°

In ΔVWX,

m∠V = (12x + 19)°

m∠W = (2x + 19)°

m∠X = (x + 7)°

And m∠V + m∠W + m∠X = 180°

(12x + 19)° + (2x + 19)° + (x + 7)° = 180°

(12x + 2x + x) + (19 + 19 + 7) = 180°

15x + 45° = 180°

15x = 180° - 45°

x = $\frac{135}{15}$

x = 9

Therefore, value of x = 9.

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4 years ago

Please convert this thank you math experts

kozerog [31]

Answer:

1. 55.5

2. 54.5

Step-by-step explanation:

Use division to convert the fraction to a decimal:

1/4 = 1 ÷ 4 = 0.25

Multiply by 100 to get percent value:

0.25 × 100 = 25%

7 0

2 years ago

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A circle is centered on point B. Points A. C and D lie on its circumference.

olga_2 [115]

Answer:

So, ADC = 124/2 => ⛰ ADC = 62°

Step-by-step explanation:

If ABC i.e angle of centra = 124°

If ABC i.e angle of centra = 124°Then, we know that angle at any where of Circle is 1/2 if central angle 

If ABC i.e angle of centra = 124°Then, we know that angle at any where of Circle is 1/2 if central angle So, ADC = 124/2 => ⛰ ADC = 62°.

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4 years ago

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matrenka [14]

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3 years ago

Prove that the bisector of the vertical angle of isosceles triangle is the perpendicular bisector of the base

julia-pushkina [17]

Answer:

We will take two angles and name them 'x'

And their sum must equal 180

So,

x + x = 180

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3 years ago