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olchik [2.2K]
3 years ago
7

How do I do number.7??????? Please answer asap!!!!!!!!

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
4 0
Since they're ratios you can cross multiply then you just solve for x :)

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Solve for n. <br><br>0= 1+n ​
maks197457 [2]

Answer:

n = -1

Step-by-step explanation:

To make n on its own, you have to subtract 1 from both sides

0 - 1 = -1 + 1 + n

-1 + 1 = 0

-1 = n

6 0
4 years ago
The square of a negative number is twelve more than four times the negative number. Find the number.
Aleks04 [339]
X - the number

x^2=4x+12 \\&#10;x^2-4x-12=0 \\&#10;x^2-6x+2x-12=0 \\&#10;x(x-6)+2(x-6)=0 \\&#10;(x+2)(x-6)=0 \\&#10;x+2=0 \ \lor \ x-6=0 \\&#10;x=-2 \ \lor \ x=6

The number is negative, so x=-2.

The number is -2.
3 0
4 years ago
Look at image please help I’m struggling
Aleksandr-060686 [28]
Answer: 3/6 and simplfied is 1/2
5 0
4 years ago
Y varies inversely with x, if y = -12 when x = 8 what is x when y = -9
Minchanka [31]

Answer:

either 5 or 11

Step-by-step explanation:

(8, -12)

(5, -9) or (11, -9)

If y varies consistently with x then it would copy what happens, in a manner of speaking.

In this case, y increases by three, x would either add 3 or subtract 3

I am not completely sure on this.

8 0
3 years ago
The amount of fuel in a tractor's fuel tank is changing according to the equation y=−3x+40 , where x = time in hours and y = amo
Alenkasestr [34]

Answer:

The rate of change is "-3". Which means the rate at which the tractor uses fuel.

Step-by-step explanation:

The equation describes a line and any line follows the equation:

y = m*x + c

Where "m" is the rate of change and "c" is the shift on the line. Comparing the equation for the fuel and the equation from the line, the rate of change must be "-3". The rate of change in this context describes the speed at which the tractor uses fuel, at a rate of 3 gallons per hour.

7 0
3 years ago
Read 2 more answers
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