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3 years ago

Please answer correctly will mark brainliest

Mathematics

2 answers:

julsineya [31]3 years ago

7 0

Irrational numbers (this is the answer)

Flauer [41]3 years ago

5 0

D. irrational numbers

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Element X decays radioactively with a half life of 13 minutes. If there are 530 grams of Element X, how long, to the nearest ten

Leona [35]

Answer:

$t \approx 50.4\,min$

Step-by-step explanation:

The time constant of the element X is:

$\tau = \frac{13\,min}{\ln 2}$

$\tau = 18.755\,min$

The decay function has the following form:

$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

$t = -\tau \cdot \ln \frac{m}{m_{o}}$

$t = -(13\,min)\cdot \ln \left(\frac{11\,g}{530\,g} \right)$

$t \approx 50.4\,min$

6 0

3 years ago

What property is described in the number sentence 6+0=0

sertanlavr [38]

6 + 0 = 6. Which property:

This is an additive identity or identity property of addition

7 0

3 years ago

Jake and Hannah wash windows Jake charges $50 plus $2 per window hannah charges $20 plus $5 per window for how many windows wash

AnnZ [28]

10.
50+(2x)=20+(5x)
-20 -20
-2x -2x
30=3x
divide both sides by 3
10=x

8 0

3 years ago

What is the Value of x in the equation 2.5x + 10 = x-0.5 ?

marshall27 [118]

Answer: 7

Step-by-step explanation:

$2.5x+10=x-0.5\\2.5x-x+10=-0.5\\1.5x=-0.5-10\\1.5x=-10.5\\x=\frac{10.5}{1.5}\\ x=7$

7 0

3 years ago

Read 2 more answers

I need help with this one.

Mandarinka [93]

Answer:

$T_{n}$ = $\frac{1}{5}$ $T_{n-1}$ with T₁ = 5000

Step-by-step explanation:

There is a common ratio r between consecutive terms in the sequence, that is

r = $\frac{1000}{5000}$ = $\frac{200}{1000}$ = $\frac{40}{200}$ = $\frac{1}{5}$

This indicates the sequence is geometric with recursive rule

$T_{n}$ = r $T_{n-1}$

Here tr = $\frac{1}{5}$ , thus

$T_{n}$ = $\frac{1}{5}$ $T_{n-1}$ , T₁ = 5000

3 0

3 years ago