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ASHA 777 [7]
3 years ago
12

Simplify the expression 82 + 9 (12: 3 x 2) – 7. Explain each of your steps.

Mathematics
1 answer:
Olin [163]3 years ago
5 0

Answer:

129

Step-by-step explanation:

8^2 + 9 (12/3 x 2) -7  Parentheses first 12 : 3 is the same as 12/3

    8^2 + 9 (4x2)-7 Parentheses:

      8^2 + 9 (8) - 7 Exponent 8 x 8:

        64 + 9(8) - 7     Multiply:

         64 + 72- 7     Add :

             136 - 7    Subtract:

                 129

The answer is 129.

Hope this helps :)

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Find the values of the variables and lengths of the sides of this kite.<br> Y-3, x+5, 2x+5, x+10
zzz [600]
Y=3
x=-5
x=-5/2
x=-10
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4 0
3 years ago
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Solve for the given variable. Record your work and check the solution, if possible.
nikdorinn [45]

Answer:

10

Step-by-step explanation:

75c-300=25c+200

-25c         -25c

50c-300=200

+300         +300

50c=500

c=10

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2 years ago
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What is the 50th term of the arithmetic sequence 3, 7, 11, 15, ... ?
zysi [14]

Answer:

B. 199

Step-by-step explanation:

We are given an Arithmetic sequence : 3, 7, 11, 15, ...

We are supposed to find the 50th term .

So, first consider the formula of nth term in Arithmetic mean:

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

where

a is first term of sequence

n is term position

d is common difference

a_{n}= the term you are supposed to find

Now,

a = 3 ( first term )

n = 50 th term ( given )

d = 7-3 = 11-7 = 4(common difference

Substitute these value in the formula given above

⇒a_{50} = 3+(50-1)*4

⇒a_{50} = 3+(49)*4

⇒a_{50} = 3+196

⇒a_{50} = 199

Hence ,The 50th term of given arithmetic sequence is 199

So, OPTION B is correct .


5 0
3 years ago
Ally has 30 quaters. The ratio if her quarters to dimes is 2:3 and the ratio of her dimes to nickels is 5:3. How many nickles do
ryzh [129]
She has 27 nickels.
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45/5*3 =27
6 0
3 years ago
To the nearest hundredth, what is the length of AC¯¯¯¯¯?
lubasha [3.4K]
Use pythagorean theorum: c^2 = a^2 + b^2, where BC = c, AB = a, AC = b
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b = SR(64 - 49) = SR(15) = 3.873 = B) 3.87 units
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3 years ago
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