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Rama09 [41]
1 year ago
15

Yuson used her calculator to solve the equation

Mathematics
2 answers:
Stella [2.4K]1 year ago
7 0

Answer:

x = 55/4.

Step-by-step explanation:

4/5x - 8 = 3

(4/5) x - 8 = 3

Add 8 to both sides:

(4/5)x = 11

Next, to isolate x, we multiply both sides by 5/4:

(5/4)(4/5)x = 11 * 5/4

1x = 55/4.

Tpy6a [65]1 year ago
5 0

Answer:

Rather than just multiplying 5/4 with 8, she has to multiply it with 3 + 8. She could put parentheses around the 3 + 8, according to PEMDAS, this would mean that the parenthesis must be solved before multiplication. The correct answer would be:

4/5x - 8 = 3

4/5x = 3 + 8

x = (3 + 8)5/4

x = 11 x 5/4

x = 55/4 or 13.75

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Save Work out the size of angle AED.<br> b) Work out x
Mamont248 [21]

Answer:

x = 10°

Step-by-step explanation:

a). Since, opposite angles of a cyclic quadrilateral are supplementary angles"

   Therefore, in cyclic quadrilateral ABDE,

   m∠ABD + m∠AED = 180°

   110° + m∠AED = 180°

   m∠AED = 180° - 110°

                 = 70°

b). AD = ED [Given]

   m∠EAD = m∠AED [Since, opposite angles of equal sides are equal in measure]

   m∠EAD = m∠AED = 70°

   By triangle sum theorem in ΔABD,

   m∠BAD + m∠ABD + m∠ADB = 180°

   m∠BAD + 110° + 40° = 180°

   m∠BAD = 180 - 150

                 = 30°

    m∠AEB = m∠AED + m∠DAB [By angles addition postulate]

    m∠AEB = 70° + 30°          

                  = 100°

    By triangle sum theorem in the large triangle,

    x° + m∠AEB + m∠EAB = 180°

    x° + 100° + 70° = 180°

    x = 180 - 170

    x = 10°

8 0
2 years ago
In response to very high demand, a new bike has been marked up by 25% and is now selling for 210.00. how much was the bike befor
harina [27]
Call the price of the bike before mark up 'x', then we have:

x + 0.25x = 210
      1.25x = 210 
             x = 168

Therefore, the bike cost $168 before 25% price increase.


3 0
3 years ago
Read 2 more answers
What is reflexive property
bixtya [17]
The reflexive property of equality simply states that a value is equal to itself.
5 0
3 years ago
Given △ABC, AB=15, BD=9, AD ⊥ BC , m∠C=30° Find: The perimeter of △ABC.
Ann [662]

Answer:

48 + 12√3 units

Step-by-step explanation:

ALL LENGTHS MUST BE POSITIVE (I did this to avoid writing ± and showing that only + works)

1. Find AD (you'll find why later): 15² = 9² + AD² --> AD² = 144 --> AD =  12

2. 30-60-90: 12-DC-AC --> AC = 24, DC = 12√3 (side opposite of 90 is double side opposite of 30, side opposite of 60 is √3 times the opposite of 30)

P = AB + BD + DC + AC = 15 + 9 + 12√3 + 24 = 48 + 12√3 units

7 0
2 years ago
if 5 times a number is increased by 4 the result is at least 19. find the least possible number that satisfies these conditions
ludmilkaskok [199]

Answer:

3

Step-by-step explanation:

5 times 3 is 15

15 plus 4 equals 19

Hope this helps :)

4 0
2 years ago
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