2 years ago

Anyone can do this??plz help

Mathematics

2 answers:

lesantik [10]2 years ago

5 0

I think the last one does not represent a function.

puteri [66]2 years ago

5 0

I think it the second one (sorry if am wrong)

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The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a

horrorfan [7]

Answer:

$3.8465 *10^7$ square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula $SA=4\pi r^2$ . Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

$SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000$

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. $3.8465 *10^7$

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2 years ago

If it rains tomorrow, the probability is 0.6 that John will practice his cello. If it does not rain tomorrow, there is only a

steposvetlana [31]

The final probability is the weighted average of the playing probabilities calculated over the possible weather options:

P(john practices cello; given that it rains) * P(it rains) +

P(john practices cello; given that it does not rain) * P(it does not rain) =

0.6 * 0.7 + 0.4 * 0.3 = 0.54

The probability is 54%

6 0

3 years ago

CaHeK987 [17]

,,......................................

8 0

3 years ago

Kim owes her friend $245 and plans to pay $35 per week. write an equation for the function that shows the amount Kim owes after

nevsk [136]

35x=245

so you would divide both sides by 35

x=7

so it would take her 7 weeks or 1 month and 3 weeks to pay her friend back

Brainliest please

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2 years ago

Solve 5(5x + 3) = -10

Elena-2011 [213]

Answer: it is -1

Step-by-step explanation:

5*5x=25x

5*3=15

25x+15=-10

25x= -10-15

25x= -25

X=-25/25

= -1

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3 years ago