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Rudik [331]
3 years ago
5

Lydia bought a shirt at 20% off its retail price is $40. She paid 5% tax on the price after the discount. How much did Lydia pay

for the shirt ​
Mathematics
1 answer:
Naya [18.7K]3 years ago
4 0

Answer:

Step-by-step explanation:

multiply .20 with 40

which gets you 8

subtract 8 from 40

which is 32

multiply .05 with 32

which is 1.6

subtract 1.6 from 32 which gets you $30.40

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Prove that 2017(2018^9+2018^8+…+2018^2+2019+1)=2018^10+2017
alisha [4.7K]
Let a=2018, we can rewrite the question into

(a-1)(a^9+a^8+...+a^2+a+2)\\=(a-1)(a^9+a^8+...+a^2+a+1)+(a-1)\\=a^{10}-1+a-1

substitute back a = 2018, obtained

{2018}^{10} + 2016
well, there is something wrong here
5 0
4 years ago
Read 2 more answers
Pls help<br><br> 2 Question
maw [93]

Answer:

1.320  ,

2.322

Step-by-step explanation:

1. Given that,

a+1/a=18

now,

(a- 1/a)² =( a+1/a)² - 4a. 1/a         [(a- b)² =( a+b)² - 4a. b  ]

           =18² - 4 . 1                      [as, a . 1/a =1 ]    

            =324 - 4

            =320

2.Given that,

a - 1/a=4

now,

a⁴+(1/a)⁴

=(a²)² + (1/a²)²                             [a⁴=(a²)² & (1/a)⁴=(1/a²)²]  

=(a²+1/a²) ²- 2 a². (1/a²)                [a²+b²=(a+b)²-2ab]

=[(a - 1/a)² +2.a. 1/a]² - 2               [a²+b²=(a-b)²+2ab]

=[4²+2]² -2

=[16+2]²-2

=18²-2

=324-2

=322

5 0
3 years ago
Solve for x. PLEASE HELP ASAP WILL GIVE BRAINLIEST ANSWER
murzikaleks [220]

Answer:

x = 2.6  

Step-by-step explanation:

To find x, you need to find how many times you need to multiply 25 to get 65. Using reverse operations will make this easier. 65 / 25 = 2.6. We can check this by multiplying 25 by 2.6, and we get 65.

3 0
3 years ago
Write an equation for the line.<br><br> through (0, 1) and with a slope of 1.5 _____________
Hunter-Best [27]

y=1.5x+1 is the equation

4 0
3 years ago
54 and 67 use numbers and operations to write each phrase as an expression
arsen [322]

The phrases you would like to be written as expressions are not listed. I would nevertheless, explain how to write phrases as expressions so that the same approach could be applied to you own question.

Phrases are dynamic, depending on the problem. They do not necessarily take a particular form.

The constant thing about phrases is the operators connecting the words in the phrases. Theses operators are:

Addition (+), Subtraction (-), Division (÷), and Multiplication (×).

In word problems, it is a matter of interpretation, these operators can be written in many ways.

ADDITION

plus

the sum of

increase

grow

add

profit

And so on.

SUBTRACTION

minus

loss

decrease

reduce

subtract

And so on

MULTIPLICATION

times

multiply

triple

And so on

DIVISION

split

share

divide

distribute

And so on.

Examples

(1) 56 is added to a number to give 100

Interpretation: x + 56 = 100

(2)The difference between Mr. A and Mr. B is 5

Interpretation: A - B = 5

(3) This load (L1) is three times heavier than that one (L2)

Interpretation: L1 = 3L2

(4) Share this orange (P) equally between the three children

Interpretation: P/3

7 0
3 years ago
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