3 years ago

Can someone please help me with this ?

1 answer:

4 0

13. 1,6

18. -15,12

19. -7, 1/2

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lyudmila [28]

If 81=n-3(-5+4n)
81= n+15-12n
81= -11n+15
-11n=81-15
-11n=66
n=-6

4 0

3 years ago

Alecsey [184]

Answer: 36.67 grams of water is added.

Step-by-step explanation:

Let the amount of water is added be 'x'.

Amount of sugar = 5 g

We need to make 12% of sugar syrup.

x grams of water is added to 5 g of sugar, to 12% of sugar syrup.

so, it becomes,

$\frac{5}{5+x}=\frac{12}{100}\\\\100\times 5=12(5+x)\\\\500=60+12x\\\\500-60=12x\\\\440=12x\\\\\frac{440}{12}=x\\\\36.67\ g=x$

Hence, 36.67 grams of water is added.

7 0

3 years ago

balandron [24]

68.75 percent hope this helps

3 0

4 years ago

marta [7]

Answer: m = 2/3

$\frac{-1-3}{-2-4}$ = $\frac{-4}{-6}$ = $\frac{2}{3}$

6 0

3 years ago

BigorU [14]

-8.70833333333 about but you can round to the nearest tenth (-8.7) or nearest whole number (-9)

4 0

4 years ago