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2 years ago

Help me pls and pls show work

Mathematics

1 answer:

EleoNora [17]2 years ago

5 0

Answer:

if you need it as improper then 25/12

Step-by-step explanation:

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Find an expression for the nth term of the arithmetic sequence.<br><br> 2, 8, 14, 20, 26, . . .

IceJOKER [234]

Answer:

Step-by-step explanation:

Math boi

8 0

2 years ago

Factor completely. 10x^7-10xy^10

denis23 [38]

Find common factor, in this case the common factor is 10x
So the answer would be 10x(x^6 - y^10)

4 0

2 years ago

If 50 is 80% , then how many percent is 38 ?

Oksanka [162]

Answer: 1.64

Step-by-step explanation:

80% = 50

20% = 12.5

100% = 62.5

38% = 1.64

4 0

2 years ago

Give me good senior quotes, best one gets brainliest! : )

irina1246 [14]

Answer:

“The roof is not my son, but I will raise it.” – Anonymous

“I’m gonna go stand outside. If anyone asks, I’m outstanding.” – Taylor Bass

(your name her) was released from his/her/their 4 year sentence

6 0

2 years ago

Element X decays radioactively with a half-life of eight minutes. If there are 800 g of element X, how long, to the nearest 10th

Harman [31]

Answer: 41.5 min

Step-by-step explanation:

This problem can be solved with the Radioactive Half Life Formula:

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=22 g$ is the final amount of the radioactive element

$A_{o}=800 g$ is the initial amount of the radioactive element

$t$ is the time elapsed

$h=8 min$ is the half life of the radioactive element

So, we need to substitute the given values and find $t$ from (1):

$22 g=(800 g) 2^{\frac{-t}{8 min}}$ (2)

$\frac{22 g}{800 g}=2^{\frac{-t}{8 min}}$ (3)

$\frac{11}{400}=2^{\frac{-t}{8 min}}$ (4)

Applying natural logarithm in both sides:

$ln(\frac{11}{400})=ln(2^{\frac{-t}{8 min}})$ (5)

$-3.593=-\frac{t}{8 min}ln(2)$ (6)

Clearing $t$ :

$t=41.46 min \approx 41.5 min$ This is the time elapsed

7 0

2 years ago