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2 years ago

HELP pls ill mark bainilest who ever is first

Mathematics

1 answer:

iris [78.8K]2 years ago

3 0

The answer is 1.75
because the cost on the y axis goes by fourths

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PLS I NEED HELP ANSWER WILL GIVE BRAINLIEST ANSWER BOTH QUESTIONS ONE AND TWO

KiRa [710]

I hope this is helpful

8 0

3 years ago

Simplify these expressions: 12x - 3x

kkurt [141]

Answer:

12x-3x

= 9x

Step-by-step explanation:

Hope it is helpful....

4 0

2 years ago

The depth of a swimming pool is 8.5 meters. what is half of the depth in millimeters

nydimaria [60]

Half of 8.5 is 4.25

4.25*100=4250

5 0

3 years ago

Read 2 more answers

If 14 people show up to a cookout and you make 21 hot dogs, how many will you need to make if 105 people up?

Oksanka [162]

Answer:

Step-by-step explanation:

let x = number of of hot dogs that 105 people will do

therefore

14 people = 21 hot dogs

105 people = x hot dogs

14 x 105 people = 21 x Xhotdogs

1470 = 21X

divide through by 21

1470/21 = 21X/21

70 = X

X = 70

therefore,

105 people will makev 70 hot dogs

7 0

3 years ago

Read 2 more answers

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