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jekas [21]
3 years ago
7

Jonas bought 3 books. Each book was the same price. He also used a coupon that takes $20 off the total cost. What expression can

be used to represent the total purchase?
Mathematics
1 answer:
Mademuasel [1]3 years ago
3 0

let x = the price of a book

 so you would have

 total = 3x-20

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Stacy started with 40 dollars in a savings account that earns 5% annually. How much interest will she get in one year
umka2103 [35]

Answer:

2 dollars

Step-by-step explanation:

5% interest is 1.05

1.05 times 40 equals 42

42-40 equal 2

So 2 dollars

8 0
3 years ago
Point o is the centre of the circle<br> Determine the values of x y z
tresset_1 [31]

Step-by-step explanation:

1..x=110/2. ( inscribed angle is half of central angle)

  • 55°

2..given,

in triangle DFE

angleDFE=angle DAE ( inscribed angle on same arc are equal)

angle DFE=55°

angle EDF= angle FED (base angle of isosceles triangle r equal)

  • z=z

now,

angle EDF+angleDFE+angle FED =180°{ sum of angle of triangle)

z+z+55=180°

2z=180-55

z=125/2

z=62.5°

3.. y=90°{ angle at circumference of circle by center is 90°}

hope it helps.

<h2>stay safe healthy and happy.</h2>
4 0
3 years ago
Help Me Please!!!! I don’t get it
gtnhenbr [62]

Answer/Step-by-step explanation:

In mathematics, there's an order to follow in solving calculations like the problems given above. The acronym, PEDMAS illustrates or makes us remember which order to follow. The acronym stands for:

P - Parenthesis. Given any problem to solve, first, solve any operation within a parenthesis. That is, expressions that are grouped together.

E - Exponents. Next in line of priority order is to solve expressions involving exponents.

D - Division

M - Multiplication

A - Addition, and

S - Subtraction.

Now, solve each expression given in the correct order of operation using PEDMAS:

10 - 3³ ÷ 9

10 - 27 ÷ 9

10 - 3

= 7 (the order of operation is EDS = Exponent, Division, and lastly, Subtraction)

7² ÷ (4 + 3)

7² ÷ 7

49 ÷ 7

= 7 (order of operation = PED)

7 × 5 - 2²

7 × 5 - 4

35 - 4

= 31 (EMS)

(6 + 2²) × 10

(6 + 4) × 10

10 × 10

= 100 (PM)

3 × 6 + 8²

3 × 6 + 64

18 + 64

= 82 (EMA)

4³ - 10 ÷ 5

64 - 10 ÷ 5

64 - 2

= 32 (EDS)

3² × 2 - 9

9 × 2 - 9

18 - 9

= 9 (EMS)

9 × 3² - 8

9 × 9 - 8

81 - 8

= 73 (EMS)

6² ÷ 3 - 5

36 ÷ 3 - 5

12 - 5

= 7 (EDS)

(9 - 5)² ÷ 4

(4)² ÷ 4

16 ÷ 4

= 4 (PED)

8 0
3 years ago
A line passes through point (-8,6) and has a slope of 3/4 . Write an equation in Ax + By = C form for this line .
motikmotik

Answer:

y - y1 = m(x - x1)

y - 6 = 3/4(x + 8)

y = 3/4x + 6 - 6

3/4x - y = 0

6 0
3 years ago
jody runs the 500 yard dash for his school track team in 1 minute. Find this rate in yards per second
fomenos

Answer: 8 1/3 yards per second

500 yards/60 seconds=8 1/3 yards per second

Check Work:

8 1/3 yards per second*60 seconds=500 yards per minute.

Hope this helps!

4 0
3 years ago
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