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melamori03 [73]
3 years ago
13

Please give me a hand

Mathematics
2 answers:
nlexa [21]3 years ago
5 0

Answer:

x=5? im not really sure what the question is its all fuzzy

Step-by-step explanation:

vlada-n [284]3 years ago
5 0

Your answer is x = 9.

To solve this equation we just need to expand the brackets and then rearrange the equation to have x on one side and the numbers on the other:

2(x + 5) - 7 = 3(x - 2)

2x + 10 - 7 = 3x - 6

2x + 3 = 3x - 6

- 2x

3 = x - 6

+ 6

9 = x

I hope this helps!

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Distance between parallel lines y=3x+10 and y=3x-20
Alecsey [184]

1. Take an arbitrary point that lies on the first line y=3x+10. Let x=0, then y=10 and point has coordinates (0,10).


2. Use formula d=\dfrac{|Ax_0+By_0+C|}{\sqrt{A^2+B^2}} to find the distance from point (x_0,y_0) to the line Ax+By+C=0.


The second line has equation y=3x-20, that is 3x-y-20=0. By the previous formula the distance from the point (0,10) to the line 3x-y-20=0 is:

d=\dfrac{|3\cdot 0-10-20|}{\sqrt{3^2+(-1)^2}}=\dfrac{30}{\sqrt{10}}=3\sqrt{10}.


3. Since lines y=3x+10 and y=3x-20 are parallel, then the distance between these lines are the same as the distance from an arbitrary point from the first line to the second line.


Answer: d=3\sqrt{10}.

4 0
3 years ago
A jeweller paid $6800 for 165 bracelets bought in China .The customs Department in his country charged him $1360 in duty
vodomira [7]
You’re so smart, I love questions like this. Hopefully you can solve it so I can know too!
5 0
3 years ago
7th grade math help me pleasee
irinina [24]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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Write the slope-intercept form of the equation of the line given the
svetoff [14.1K]

Answer:

y= -4x-7 or 4x+y= -7

Step-by-step explanation:

we know y=mx+c

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5 0
3 years ago
You are the manager of a fast-food store. Part of your job is to report to the boss at the end of each day which special is sell
Talja [164]

Answer:

A total of 119 Specials were sold today.  Chicken Littles had the highest number sold, which represents about 21% (25/119 * 100) of the total sales and a cost of 24% of the total costs.  This was followed by Huge Burger and Coney Dog which were sold 20 each or about 17% of the number sold.  Poker Burger, Baby Burger, and Yummy trailed behind with total sales of 19, 18, and 17 respectively.

Step-by-step explanation:

a) Data and Calculations:

SPECIAL            NUMBER SOLD  Percentage   COST      Percentage

Huge Burger                20           17%                 $2.95        20%

Baby Burger                 18            15%                 $1.49         10%

Chicken Littles            25           21%                 $3.50         24%

Porker Burger              19            16%                $2.95        20%

Yummy Burger             17            14%                 $1.99         13%

Coney Dog                  20            17%                 $1.99         13%

Total Specials Sold    119          100%               $14.87        100%

5 0
3 years ago
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