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3 years ago

Ayuda porfa 3x + 20 = 80+60

Mathematics

1 answer:

svetlana [45]3 years ago

3 0

Answer:

Step-by-step explanation:

3x + 20

You will need to find out what x represents by doing that you add 80+60 which equals 140 now you know what your missing

3 times what + 20 equals 140

40×3=120+20=140

Your answer would be 3•40+20=140

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Given 2 lines cut by a transversal, if m<3 = 75, what would the m<7 need to be in order for the lines to be parallel and w

Ksenya-84 [330]

7 and 6 are parallel was that the answer you were looking for?

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3 years ago

HELP PLEASE FAST ILL MARK BRAINLIEST IF CORRECT 20 points!!

kumpel [21]

Answer:

8.49

Step-by-step explanation:

6^2 + 6^2 = 72

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3 0

3 years ago

Phoebe and finn are sharing

pychu [463]

Answer:

Let's define:

P = pies that Phoebe ate

F = pies that Finn ate

We know that together they ate 29/12 pies, then:

P + F = 29/12

We know that Finn ate more than Phoebe, then F > P.

And we know that Phoebe ate more than 5/6 of a pie, then:

P > 5/6.

Then we have the relations:

P + F = 29/12

P > 5/6

F > P

To find different combinations we can just give one of the variables a value.

We have a direct condition on P, which is:

P > 5/6

So we can just give P any value larger than 5/6 and find the value of F.

For example:

P = 6/6 = 1

Then:

F + 1 = 29/12

F = 29/12 - 1 = 29/12 - 12/12 = 17/12

And 17/12 > 5/6

So we meet the condition F > P.

Then we have the combination:

P = 1

F = 17/12

Now let's find another condition, this time let's use:

P = 5/6 + 1/12 = 10/12 + 1/12 = 11/12

Then:

F + 11/12 = 29/12

F = 29/12 - 11/12 = 18/12

And 18/12 > 11/12

Then we meet the condition:

F > P.

We have the combination:

F = 18/12

P = 11/12

Now for the last combination, we can use:

P = 5/6 + 3/12 = 10/12 + 3/12 = 13/12

Then:

F + 13/12 = 29/12

F = 29/12 - 13/12

F = 16/12

And 16/12 > 13/12

Then we meet the condition F > P

We have the combination:

F = 16/12

P = 13/12.

5 0

3 years ago

The mean of four numbers is 70. The mean increases to 80 when a fifth number is added. What is the fifth number?

irga5000 [103]

The fifth number is 90

7 0

4 years ago

Aron flips a penny 9 times. Which expression represents the probability of getting exactly 3 heads?

DedPeter [7]

Answer:

$9C3*(0.5)^3(0.5)^6$

Step-by-step explanation:

The binomial probability formula shown has variables which represents:

n is the total number of trials (here, we flip penny 9 times, hence n = 9)

k is the number we want to find (here, we want the probability of 3 heads, so k = 3)

p is the probability of success (here, success means getting heads. So, in a coin flip the probability of heads is always 1/2, so p = 1/2)

<em>Putting all the info into the equation and using formula for nCk, we get:</em>

$P(k successes)=nCk*p^{k}(1-p)^{n-k}\\P(3Heads)=9C3*(0.5)^3(1-0.5)^{9-3}\\P(3Heads)=9C3*(0.5)^3(0.5)^6$

The first expression shown in the answer choices is right.

3 0

3 years ago

Read 2 more answers