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Nataly [62]
4 years ago
14

Seven more than one number equals nine less than double that number. Find that number.

Mathematics
2 answers:
yanalaym [24]4 years ago
3 0

Answer: That number is 16.

Step-by-step explanation:

n + 7 = 2n- 9        n represents the number now  solve the question

   + 9            +9        add 9 to both sides

n + 16 = 2n             subtract n from both sides

-n            -n

  16= 1n                     Divide both sides by 1

n= 16

Check:    16 + 7 = 2(16) - 9

                 23 =23

klasskru [66]4 years ago
3 0
Answer:
That number is 16

Explanation:
Step 1 - Write down the information you know

*ps. for this problem we will be using x to represent the unknown number. for future problems, just know that unless a variable has an assigned letter to represent it, you can usually pick whichever letter you’d like

• “Seven more” — “7 +”
• “then one number equals” — “x =”
• “nine less than” — “- 9”
• “double that number” — “2x”

Step 2 - Write an equation using the information you know

x + 7 = 2x - 9

Step 3 - Subtract x from both sides of the equation

x + 7 = 2x - 9
x - x + 7 = 2x - x - 9
7 = x - 9

Step 4 - Add 9 to both sides of he equation and then switch sides

7 = x - 9
7 + 9 = x - 9 + 9
16 = x
x = 16

Now that we have found the value of x, we know that the number is 16.
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MAPS On a map, Wilmington Street, Beech Drive, and Ash Grove Lane appear to all be parallel. The on
joja [24]

The distance between the two streets along Kendall is 347.9 feet.

Solution:

The image of the problem is attached below.

Distance between Wilmington to Ash Grove along Kendall = 820 feet

Distance between Wilmington to Ash Grove along Magnolia = 660 feet

Distance between Beech and  Ash Grove along Magnolia = 280 feet

Distance between Wilmington to Beech along Magnolia

                                       = 660 feet – 280 feet

                                       = 380 feet

Let us x be the distance between Wilmington to Beech along Kendall and

820 – x be the distance between Beech and  Ash Grove along Kendall.

The given streets are parallel.

By proportionality theorem, parallel lines cut by a transversal are in proportion.

$\Rightarrow\frac{380}{280} =\frac{x}{820-x}

Do cross multiplication.

$\Rightarrow{380}({820-x}) =280x

$\Rightarrow 311600-380x =280x

$\Rightarrow 311600 =280x+380x

$\Rightarrow 311600 =660x

$\Rightarrow x=472.1

Distance between Beech and  Ash Grove along Kendall          

                                    = 820 – x  

                                    = 820 – 472.1

                                    = 347.9

Hence the distance between the two streets along Kendall is 347.9 feet.

8 0
3 years ago
Ingram Co. manufactures office furniture. During the most productive month of the year, 3,500 desks were manufactured at a total
Lorico [155]

The cost of manufacturing x units is

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The variable cost per unit is \$16.

4 0
3 years ago
Read 2 more answers
Dajuan is painting a mural on a rectangular
horsena [70]

Answer:

Every day Dajuan will paint 14.5 square feet of the wall.

Step-by-step explanation:

Since Dajuan is painting a mural on a rectangular wall, which measures 14.5 feet long and 10 feet wide, and so far, his mural covers 60% of the wall, and Dajuan will paint the remaining part of the wall over the next four days, painting the same amount of the wall, in square feet, on each of those four days, to determine how much of the wall, in square feet, will Dajuan paint on each of the next four days, the following calculation must be performed:

((14.5 x 10) x 0.4) / 4 = X

(145 x 0.4) / 4 = X

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4 0
3 years ago
What is value of K? It's not multiple choice.
larisa86 [58]

Answer:

14

Step-by-step explanation:

6 0
3 years ago
Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.
Levart [38]
The rule of the equation of the line is y=mx+b but since we don't have a B so it will be y=mx so in order to solve it you need to exchange the ordered pairs 
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4 years ago
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