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Liula [17]
3 years ago
11

If -2/1 = 6/7x , what is x?

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

7/3

Step-by-step explanation:

Vesna [10]3 years ago
4 0

Answer:

<h2>x =-7/3</h2>

Step-by-step explanation:

-\frac{2}{1}=\frac{6}{7}x\\\\\frac{6}{7}x=-\frac{2}{1}\\\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\\frac{6}{7}x=-2\\\\\mathrm{Multiply\:both\:sides\:by\:}7\\7\times\frac{6}{7}x=7\left(-2\right)\\\\Simplify\\6x=-14\\\\\mathrm{Divide\:both\:sides\:by\:}6\\\frac{6x}{6}=\frac{-14}{6}\\\\Simplify\\x=-\frac{7}{3}

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7. The ratio of black cars to silver cars in a parking lot is 7:4. If there is a DIFFERENCE of 12 more black cars than silver ca
QveST [7]

Answer:

Step-by-step explanation:

Let B be the number of black cars and S the number of silver.  

We know that B/S = 7/4

We also know that B - S = 12

Rearrange the first:  B = 7S/4

B - S = 12

7S/4 - S = 12

7S - 4S = 48

3S = 48

S = 16

B/S = 7/4

B/16 = 7/4

4B = 112

B = 28

B + S = 44 cars

I can't add the tape diagram here, but show two ribbons (tapes) for each car color and drawn so one can see the relative numbers of each.

8 0
3 years ago
PLEASE HELP! The table defines a function (x:7,10,13,16) (y:21,30,39,48)
Nataly [62]

Answer:

(x:21,30,39,48)(y:7,10,13,16)

Step-by-step explanation:

For an inverse, the x value becomes the output and the y values becomes the input

(x:21,30,39,48)(y:7,10,13,16)

6 0
3 years ago
The ratio 6:7 can also be written as 7/6 <br> True or false
zloy xaker [14]
I think the answer is false✨
5 0
3 years ago
Please help!<br> find the measure of angle C
barxatty [35]
We have to find x. 

5x + 9  = 7x + 3

6 = 2x

3 = x

Plug 3 for x to find the angle.

7x + 3 -> 7(3) + 3 -> 21 + 3 = 24

One angle is 24, and the other is 90, so to find <C you do this:

<C + 24 + 90 = 180

<C = 66
4 0
3 years ago
1.) test worth 50 points ; test sore of 84%
Dominik [7]
5*8=40=80%
0.5*4=2=4%
40+2=42
42/50=42:50=21:25

7.5*90=67.5
0.75*6=4.5
67.5+4.5=72
72/75=72:75=24:25

21:25,24:25

b is better


7 0
3 years ago
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