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IrinaVladis [17]
3 years ago
12

Factor out the greatest common factor 15x^2-21x ^=exponent

Mathematics
1 answer:
gavmur [86]3 years ago
4 0

Answer:

3x

Step-by-step explanation:

3x(5x-7)

brainliest!

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How is a simontaneous equation solve or the procedures to solve it
Marina CMI [18]

Answer:

on my knowledge i can tell you the methods used to solve it which are;

Step-by-step explanation:

<h3>Elimination method.</h3><h3>Substitution method.</h3><h3>Graphical method.</h3>
3 0
2 years ago
Please help and show your work . Thanks if the picture is upside down turn your device on portrait by locking it so it won't tur
Bezzdna [24]
So we know that the bag has total 15 cookies, and 1 cookie that does not have any raisin. Finally, the probability that one cookie won't have any raisin is 1/15 or 7 percent. Hope it help!
3 0
3 years ago
Suppose the number of messages that an inbox receives may be modeled by a Poisson distribution. If the average number of message
docker41 [41]

Answer:

0.36427

Step-by-step explanation:

Mean = λ = 18 messages per hour

P(X = x) = (e^-λ)(λ⁻ˣ)/x!

P(X ≤ x) = Σ (e^-λ)(λ⁻ˣ)/x! (Summation From 0 to x)

But the probability required is that the messages thay come in an hour is between 15 and 20, that is, P(15 < X < 20)

P(15 < X < 20) = P(X < 20) - P(X ≤ 15)

These probabilities will be evaluated using a cumulative frequency calculator.

P(X < 20) = 0.65092

P(X ≤ 15) = poissoncdf(18, 15) = 0.28665

P(15 < X < 20) = P(X < 20) - P(X ≤ 15) = 0.65092 - 0.28665 = 0.36427.

You can use the Poisson distribution calculator here

https://stattrek.com/online-calculator/poisson.aspx

4 0
3 years ago
Factor 26r3s + 52r5 – 39r2s4.
algol [13]

Answer:

13r²(2rs + 4r³ - 3s⁴)

Step-by-step explanation:

In equation 26r³s + 52r⁵ - 39r²s⁴;

The GCF of 26, 52, and 39 = 13

The GCF of r³, r⁵ and r² = r²

The GCF of s, (no "s"), and s⁴ = no "s" (Since one of the number doesn't have "s")

Now we can factor out 13r² from all three expressions;

26r³s + 52r⁵ - 39r²s⁴

=> <em>13r²(2rs) + 13r²(4r³) - 13r²(3s⁴)</em>

To factor it all together;

<u>13r²(2rs + 4r³ - 3s⁴)</u>

Hope this helps!

7 0
3 years ago
James works at a grocery store. He makes $6.20 per hour and works 30 hours each week. How much money will james make in a 4-week
lara31 [8.8K]

It is a very simple question to answer.

Obviously first we can calculate his weekly earnings and then multiply them by 4 to calculate his total earnings over the course of 4 year period.

So as he makes 6.2$ an hour. He will make 6.2 * 30 = 186 $ a week as that is the number of hours he works in a week.

Now we can multiply this by 4 to calculate his over all earnings. So 186 * 4 = 744.

4 0
3 years ago
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