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3 years ago

Can you turn this sentence into an equation please? Three times twenty one more than a number is twelve. What is that number?

Mathematics

2 answers:

Lynna [10]3 years ago

8 0

Answer:

3(n+21) = 12 n= -17

Step-by-step explanation:

3n + 63 = 12

3n = -51

n = -51/3

n= -17

Zanzabum3 years ago

3 0

X + 3 * 21 = 12
x + 63 = 12
x = 12-63
x = -51
The wording was a little odd, but I hope this is what you’re looking for!

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Help please i don’t know how to do it

nekit [7.7K]

Answer:

x + 3y = 15

Step-by-step explanation:

Line is passing through the points $(3, \:4) = (x_1,\:y_1)\:and\: (9, 2)=(x_2,\:y_2)$

Slope of line (m)= (2 - 4)/(9 - 3) = -2/6 = -1/3

Equation of line in point-slope form is given as:

$y-y_1 =m(x-x_1)$

Plugging the values of $x_1,\: y_1\: and \: m$ in the above equation we find:

$y-4 =-\frac{1}{3}(x-3)$

$\implies 3y-12 =-x+3$

$\implies x+ 3y =12+3$

$\implies \huge {\orange{\boxed{x+ 3y = 15}}}$

This is the required equation of line in the form $\red{\bold{ax + by = c}}$

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2 years ago

help me ASAP please

xxMikexx [17]

Answer:

Step-by-step explanation:

I think it is D because exponential graphs usually have a curve to them. And the one you need is exponential decay so D is negative and exponential.

HOPE THIS HELPS! HAVE A GREAT DAY!! :)

5 0

3 years ago

After a reflection, can A=A'?

motikmotik

NO It can not!

Reason: the reason is because since both are the same , it will equal the mostly 0! So it wouldn’t make sense. So no!

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3 years ago

-14=6+5x what does x equal

bezimeni [28]

The answer is negative four. subtract six from both sides and you get -20=5x then you would divide both sides by 5 and get -4

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3 years ago

Please please help it is very urgent!

Liula [17]

Y = -0.33x + -5.00 (rounded to the nearest 100)

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3 years ago