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3 years ago

Simplify the following PLSSSS HELP THIS IS SO HARD jahsjskkaksjakakajakaka

Mathematics

1 answer:

Anastasy [175]3 years ago

3 0

Answer:

A) 6x^8y^5 B) 4x^5z^8 C) 12a^9b7 D) 6s^9t^3

Step-by-step explanation:

you have to simplify all of them . Hope this helps

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A local little league have a total of 90 players, of whom 40% are left-handed. How many left-handed players are there?

nalin [4]

There are 36 left-handed players in the local leave

Step-by-step explanation:

The percentage formula will be used for calculating the number of left-handed people

Given

Total players in a league = 90

Percentage of left-handed players = 40%

So,

$Left-handed\ Players = 40\%\ of\ 90\\= 0.40 * 90\\= 36$

Hence,

There are 36 left-handed players in the local leave

Keywords: Percent, percentage

Learn more about percentage at:

#LearnwithBrainly

6 0

3 years ago

Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a p

balandron [24]

Answer:

the answer is C 25

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

9. What is the likelihood that a randomly selected couple's relationship survived between 90 and 150 days

andrew-mc [135]

Answer:

0.5818

Step-by-step explanation:

Suppose the average teenage romantic relationship is normally distributed with a mean number of 100 days with a standard deviation of 30 days.

Answer:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}\\ \\where\ \mu=mean,\sigma=standard\ deviation, x=raw\ score$

Given that:

$\mu=100\ days,\sigma=30\ days\\\\For\ x=90\\\\z=\frac{90-100}{30} =-0.33\\\\For\ x=150\\\\z=\frac{150-100}{30} =1.67$

Therefore, from the normal distribution table, P(90 < x < 150) = P(-0.33 < z < 1.67) = P(z < 1.67) - P(z < -0.33) = 0.9525 - 0.3707 = 0.5818

7 0

3 years ago

6x - 5y = 11<br> y = 7x + 21<br><br> What is the correct answer to this problem?

evablogger [386]

Answer:

X=-4, y=-7

Step-by-step explanation:

6x-5y=11. 1st equation

y=7x+21 2nd equation

6x-5(7x+21)=11. Sub value of y in 2nd equation (7x+22) into 1st equation

6x-35x-105=11. Solve by distributative property

-29x-105=11. Add x values

-29x=116. add 105 to both sides

x=-4. Solve for x

solve for y:

y=7x+21

y=7(-4)+21

y=-28+21

y=-7

check answer by substituting x and y into either equation

6x-5y=11

6(-4)-5(-7)=11

-24+35=11

11=11

3 0

3 years ago

What is 4.5w=5.1w-30 step by step please

vampirchik [111]

4.5w = 5.1w -30

4.5w - 5.1w = 5.1w - 5.1w -30 (subtracted 5.1w on both sides)

4.5w - 5.1w = -30 (next combine like terms)

-0.6w = -30 (next do the inverse operation of w)

w = -30 ÷ -0.6

w = 50 (it became positive cause minus and minus = positive)

so your final answer is: w = 50

Hope that helps:D

8 0

3 years ago

Read 2 more answers