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Snowcat [4.5K]
3 years ago
15

Eight times the sum of 11 and a number is 123. Which equation below can be used to find the unknown number

Mathematics
2 answers:
Darya [45]3 years ago
8 0
The equation would be
8 * (11 + x) = 123

Anettt [7]3 years ago
6 0

Answer:

8(11+x) = 123,

Where, x = unknown number

Step-by-step explanation:

Let x be the unknown number,

Since, Sum of 11 and x = 11 + x

Eight times of the sum of 11 and x = 8 × sum of 11 and x

= 8(11 + x)

According to the question,

Eight times of the sum of 11 and x = 123

⇒ 8(11+x) = 123

Which is the required equation.

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three times one number added to five times a second number is 68. three times the second number minus four times the first numbe
saw5 [17]

Answer:

the first number equals 6

the second number equals 10

Step-by-step explanation:

3×n1 + 5×n2 = 68

3×n2 - 4×n1 = 6

3×6 + 5×10= 68

\/ \/

18 + 50= 68

3×10 - 4×6 = 6

\/ \/

30 - 24 = 6

hope this helped :)

4 0
3 years ago
Find f(3) for f(x)=1/2(4)^x
Ede4ka [16]

Answer:

A. 32

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 1/2(4)ˣ

f(3) is x = 3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(3) = 1/2(4)³
  2. Exponents:                          f(3) = 1/2(64)
  3. Multiply:                               f(3) = 32
6 0
3 years ago
If you place a 45-foot ladder against the top of a 36-foot building, how many feet will the bottom of the ladder be from the bot
ad-work [718]
Do you mean the top of the ladder and the top of the building? If so, it would be 9 feet<span />
5 0
4 years ago
What is 22% of 45<br><br><br><br> what is 32.5% of 250
antoniya [11.8K]

Answer:

22%*45=

(22:100)*45 =

(22*45):100 =

990:100 = 9.9

32.5%*250=

(32.5:100)*250 =

(32.5*250):100 =

8125:100 = 81.25

7 0
3 years ago
Read 2 more answers
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Alisiya [41]
You need to multiply 21 *2
6 0
3 years ago
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