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3 years ago

Please help. Will mark brainliest if correct. ( links will be banned)

Mathematics

2 answers:

Hatshy [7]3 years ago

7 0

Answer:

answer 2

Step-by-step explanation:

I have no clue guess you'll just have to trust me

Andrei [34K]3 years ago

3 0

Answer:

x<4.5

Step-by-step explanation:

Simplify both sides.

2x-6<3

add 6 on both sides.

2x<9

divide both sides by 2

x<4.5

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4. Determine if the given point is a solution of the system of inequalities

Zepler [3.9K]

Answer:

hope this helps

Step-by-step explanation:

a yes

b yes

c no

d yes

7 0

3 years ago

Read 2 more answers

Identify the number of decimal places in each factor. 0.47 × 3.2 The number of decimal places in 0.47 is . The number of decimal

nignag [31]

Answer:

2, 1, 3

Step-by-step explanation:

correct on edg

5 0

4 years ago

Charmaine cutaway 3.65 meters of rope. Before that, she had 9 meters of rope. How much rope does Charmaine have left?

mihalych1998 [28]

Answer:

5.35

Step-by-step explanation:

9-3.65=5.35

4 0

3 years ago

To test if a coin is fair, the coin is flipped 100 times. It happens to land heads 62 times. This is more than the expected 50 h

miskamm [114]

Answer:

exywiyc yyey ey yyy yyy y y yy y yy yy y y y yyyy yyy y y y yy y y yy yy y y y y y yy y y y y y y y y y yAnswer:

exywiyc yyey ey yyy yyy y y yy y yy yy y y y yyyy yyy y y y yy y y yy yy y y y y y yy y y y y y y y y y y

Step-by-step explanation:Answer:

exywiyc yyey ey yyy yyy y y yy y yy yy y y y yyyy yyy y y y yy y y yy yy y y y y y yy y y y y y y y y y y

6 0

3 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

3 years ago