3 years ago

Which statement is true?

Mathematics

1 answer:

Nina [5.8K]3 years ago

4 0

Answer: I think the answer is 1 in my opinion but not sure

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In a two digit number, the tens digit is 2 less than the units digit multiplied by three. The reversed number is half the origin

Papessa [141]

Answer:

Step-by-step explanation:

Original number: XY

x = 3y - 2

10y + x = (10x + y) / 2 + 1/2

substitution: 10y + 3y - 2 = 13y - 2 = (10 * (3y - 2) + y) / 2 + 1/2

* 2 both sides and simplify: 26y - 4 = 31y - 19

31y - 26y = -4 + 19

5y = 15

y = 3

x = 7

Original number: 73

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2 years ago

if the population of a country increases at a rate of 1.5% annually, and it’s current population is 430,000, how many years will

aleksandrvk [35]

Hi,
$a_0=430000\\
a_1=a_0*1.15\\
a_2=a_1*1.15=a_0*1.15^2\\
...\\
a_n=a_0*1.15^n\\

a_n \geq 3*a_0\\

1.15^n \geq 3\\

n*ln(1.15) \geq ln(3)\\

n \geq \dfrac{ln(3)}{ln(1.15)} \\

n \geq 7.86059688...\\\\

\boxed{n \geq 8}\\

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3 years ago

What is the y intercept of y=3/2x-3

dimaraw [331]

Y = 3/2 x - 3

Matching the equation with y = mx + b where b is the y-intercept, we can identify the y-intercept as -3.

-------------------------------------
Answer: y-intercept = -3
-------------------------------------

4 0

3 years ago

I've been at this for half an hour Help

Mazyrski [523]

Answer:

$(-\frac{3}{4})^1^0$