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krok68 [10]
3 years ago
12

5 1/2 of what number is 55?

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
8 0
I hope this helps you

BARSIC [14]3 years ago
8 0
5.5(x)=55
5.5(10)=55
55=55

X is 10 because when you multiply a decimal by 10, it moves the decimal point over one place to the right.
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Work out 5/6 x 3/4<br>Give the answer as a fraction in its simplest form.​
wolverine [178]

Answer:

The answer is 5/8

Step-by-step explanation:

8 0
2 years ago
WILL GIVE 100 POINTS
padilas [110]

(a) The explicit rule to model the sequence formed by the number of seats in each row is a_{n}=15+3n

(b) The 35th row has 120 seats

Step-by-step explanation:

The rule of the nth term of an arithmetic sequence is

a_{n}=a+(n-1)d , where

  • a is the the first term
  • d is the common difference between each two consecutive terms

∵ There are 18 seats in the 1st row

∵ There are 21 seats in the 2nd row

∵ 21 - 18 = 3

∵ The number of seats is increased by 3 with each additional row

- The number of seats in each row represents an arithmetic

   sequence because there is a common difference between

   each two consecutive rows

∴ The number of seats in each row formed an arithmetic sequence

∵ The number of seats in the first row = 18 seats

∴ a = 18

∵ The number of seats in a row continues to increase by 3 with each

   additional row

∴ d = 3

- Substitute the values of a and d in the rule of nth term

∴ a_{n}=18+(n-1)3

- Simplify the right hand side

∴ a_{n}=18+3n-3

- Add like terms

∴ a_{n}=15+3n

(a) The explicit rule to model the sequence formed by the number of seats in each row is a_{n}=15+3n

∵ There are 120 seat in a row

- Substitute a_{n} by 120 in the rule above

∴ 120 = 15 + 3n

- Subtract 15 from both sides

∴ 105 = 3n

- Divide both sides by 3

∴ n = 35

∴ The number of the row is 35

(b) The 35th row has 120 seats

Learn more:

You can learn more about the sequences in brainly.com/question/7221312

#LearnwithBrainly

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2 years ago
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enyata [817]

Answer:

y=3x+(-3)

Step-by-step explanation:

y=mx+c

3=3(2)+c

3=6+c

c=-3

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2 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.
lubasha [3.4K]

Notice that based on the diagram, all of the sides of the triangle are the same length. (The dashes on the sides of the triangle show that the sides are of congruence.) This means that the triangle is an equilateral triangle. An important thing to note about equilateral triangles is that they all have angles of 60°. All angles in equivalent triangles are 60°.


This means that we can set 7x - 3 equal to 60 to solve for x:

7x - 3 = 60

  • Set up

7x = 63

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x = 9

  • Divide both sides by 7

Our answer is x = 9.

8 0
3 years ago
Of the last 60 people who went to the cash register at a department store, 13 had blond hair, 18 had black hair, 22 had brown ha
Taya2010 [7]
Yes. 18/60 = 9/30 = 3/10.
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2 years ago
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