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vlabodo [156]
2 years ago
6

Ratio and proportion :21:2x=7:10​

Mathematics
1 answer:
jenyasd209 [6]2 years ago
5 0

Answer:

x=15

Step-by-step explanation:

21:2x=7:10 can be rewritten as 21/2x=7/10

21/2x=7/10, cross multiply

= 14x=210

x=15

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Find the original price given the total amount and tip rate. Total price 307.32 tip rate 20%
eduard

Answer:

the answer is 61.3

Step-by-step explanation:

you have to dived one number by the other

5 0
2 years ago
Which expression is equivalent to 5.4+3.4w-1.8w +5.8 A) 7(1.6+w) B) 1.6(7+w) C) 1.6(7w) D) 1.6(0.25+w)
Bad White [126]
Do 5.4 plus 5.8 then do 3.4w minus 1.8w and whatever you get for each is your key to the expression. So if you were to solve the answers like A you would do 7(1.6+w) and see what you would get. Obviously A isn't the answer. Sorry, this is hard to explain. But the answer is C 
6 0
3 years ago
If h (x) = -5x-7 then what is h (x-1) ?
goldenfox [79]

Answer:

h(x - 1) = -5x - 2

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

Terms/Coefficients

Functions

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

h(x) = -5x - 7

<u>Step 2: Find</u>

  1. Substitute in <em>x </em>[Function h(x)]:                                                                          h(x - 1) = -5(x - 1) - 7
  2. [Distributive Property] Distribute -5:                                                                h(x - 1) = -5x + 5 - 7
  3. Combine like terms:                                                                                         h(x - 1) = -5x - 2
6 0
3 years ago
A group of friends wants to go to the amusement park. They have $87.25 to spend on parking and admission. Parking is $6.25, and
Snezhnost [94]

Answer:

p = 3

Step-by-step explanation:

27p + 6.25 = 87.25

      - 6.25     -6.25 = 27p + 0 = 81 = 27p = 81

81/27 = 3

p = 3

4 0
2 years ago
What is 64x4 pls help me
Klio2033 [76]

Answer:

256

Step-by-step explanation:

64*4

(60*4)+(4*4)

240+16

256

you could also take a different approach--

64=4^3

4^3*4=4^4

4^4=16^2=256

6 0
3 years ago
Read 2 more answers
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