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vitfil [10]
2 years ago
10

Solve each equation

Mathematics
2 answers:
Fed [463]2 years ago
7 0

Answer:

1. y = 7

2.  y = 6

3.  y = 7/2

4. y = 8

Step-by-step explanation:

I searched it up and found the answer.

Alona [7]2 years ago
6 0
<h3><u>Solution</u><u>:</u></h3>

<em>Let's </em><em>solve </em><em>each </em><em>equation </em><em>one</em><em> </em><em>by </em><em>one </em><em>:</em>

  • <u>7y + 7 = 56</u>

➝ 7y + 7 = 56

➝ 7y = 56 - 7

➝ 7y = 49

➝ y = 49 / 7

➝ y = 7

  • <u>4</u><u>2</u><u> </u><u>-</u><u> </u><u>6</u><u>y </u><u>=</u><u> </u><u>6</u>

➝ 42 - 6y = 6

➝ - 6y = 6 - 42

➝ - 6y = - 36

➝ y = -36 / - 6

➝ y = 6

  • <u>(</u><u> </u><u>y </u><u>+</u><u> </u><u>1</u><u> </u><u>)</u><u>²</u><u> </u><u>=</u><u> </u><u>9</u>

➝ ( y + 1 )² = 9

➝ y + 1 = √ 9

➝ y + 1 = 3

➝ y = 3 - 1

➝ y = 2

  • <u>1</u><u> </u><u>+</u><u> </u><u>7</u><u>2</u><u> </u><u>/</u><u> </u><u>y </u><u>=</u><u> </u><u>1</u><u>0</u>

➝ 1 + 72 / y = 10

➝ 72 / y = 10 - 1

➝ 72 / y = 9

➝ 72 = 9y

➝ 9y = 72

➝ y = 72 / 9

➝ y = 8

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The population in a small city increased from 1250 people to 2780 people. What is the percent of increase in the number of peopl
Zarrin [17]
<h3>Answer: Choice B) 122%</h3>

==========================================

Work Shown:

A = 1250 is the initial amount

B = 2780 is the new amount

C = percent change = unknown for now

The formula to use is

C = [ (B-A)/A ] * 100

to calculate the percent change.

Basically we calculate the change (B-A) first and then divide that over the original amount A to compute the decimal form of the answer, which is then converted over to percentage form. The "100" tacked on at the end is what converts from decimal to percent form.

---------

C = [ (B-A)/A ] * 100

C = [ (2780 - 1250)/1250 ] * 100

C = (1530/1250)*100

C = 1.224 * 100

C = 122.4%

C = 122%

---------

The positive C value indicates we have a percent increase. If C were negative, then we'd have a percent decrease.

6 0
3 years ago
Read 2 more answers
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balu736 [363]

Answer:

when entering values of x in the function, it is observed that for k = 7 the results of f (x) displace 10 units. For this see the attached table. Therefore, for this case, the correct answer is k = 7 and the way to solve it is to substitute values of x in the given functions and see the results of f (x).

so K=7

Step-by-step explanation:

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iris [78.8K]

Answer:

x = 53.6588°

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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  2. Parenthesis
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  4. Multiplication
  5. Division
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Step-by-step explanation:

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We are given a right triangle. We can use trig to find the missing angle.

<u>Step 2: Identify Variables</u>

<em>POV from angle x</em>

Angle = <em>x</em>

Adjacent = 16

Hypotenuse = 27

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Substitute:                    cosx° = 16/27
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