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algol [13]
3 years ago
12

The difference between 7 times a number and 5 is 51 which of the following equations below can be used to find the unknown numbe

r
A.) 7x - 5x = 51

B.)7x + 5 = 51

C.) 7x - 5 = 51

D.) 7x * 5 = 51
Mathematics
2 answers:
Nataly [62]3 years ago
4 0
Here are some helpful word problem terms:

x= a number

times= multiplication

7 times a number= 7x

difference= subtraction

difference between 7 times a number and 5= 7x - 5

is= equal sign


ANSWER: (C) 7x - 5= 51 is the answer because 5 was not multiplied by the number (x) too.

Hope this helps! :)
Sloan [31]3 years ago
3 0
C, I think

difference(subtract) between 7 times a number(7 multiplied by a unknown number) AND 5(other number to subtractoon is(= to) 51
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Carlos performed a transformation on trapezoid EFGH to create E′F′G′H′, as shown in the figure below:
Nataliya [291]

Answer:

90° clockwise rotation or 270° anticlockwise rotation

Step-by-step explanation:

(x,y)=(y,-x)

<em>E(-6,-4)=E'(-4,6)</em>

<em>F(-4,-4)=F'(-4,4)</em>

<em>G(-2,-6)=G'(-6,2)</em>

<em>H(-7,-7)=H'(-7,7)</em>

Therefore, E prime is (-4,6), F prime is (-4,4), G prime is (-6,2) and H prime is (-7,7).

4 0
2 years ago
You and your friend collect 180 cans for a food drive. The ratio of cans you collected to cans your friend collected is 4 to 5.
marissa [1.9K]
Are you looking for the number of cans you and your friend each collected? If yes, here is the solution:

Let x be the number of cans.

4x + 5x = 180
        9x = 180
     9x/9 = 180/9 (divide both sides of the equation by 9)
          x = 20

Now, substitute the values:
4(20) + 5(20) = 180
       80 + 100 = 180
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Therefore, you collected 80 cans and your friend collected 100 cans.
6 0
3 years ago
If you help me with this you get brainlisted (:<br> tbh I'm just lazy to do this lol-
skelet666 [1.2K]

Answer: point form

1. (6,24)

2.(-4,-12)

3.(3,15)

4. (-5,-20)

5. (2,4)

6.(-1,-4)

7.(-3,-9)

8.(-4,-8)

9.(3,9)

10.(-6,-30)

Step-by-step explanation:

4 0
3 years ago
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Find the range of values of x for which 2x2 – 5x + 2 &gt; 0​
Alchen [17]

Answer:

x < 1/2 and x>2

Step-by-step explanation:

first solve the eqn,

2x2 -5x +2 = 2x2 -4x -x +2 = 2x(x-2) - 1(x-2) = (2x-1)(x-2)

since the questions asks for >,

x < 1/2 and x>2

if the question had asked for <,

1/2<x<2

7 0
3 years ago
Here is another one :( help
Anna [14]
$46.80, 6 popcorn

$7.8, 1 popcorn
5 0
3 years ago
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