1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Reil [10]
3 years ago
11

Brainliest for right answer!!!

Mathematics
2 answers:
GaryK [48]3 years ago
6 0
Substitution is when you plug in one value of a variable into an equation. In this case the value of y is given. Plug (x+ 6) into the equation: y=-2x - 3

You should get something like this:
x + 6 = -2x - 3
From there you can add 2x to both sides, and subtract 6 from both sides to get this:
3x = -9
Divide both sides by 3
x = -3
Now that you have the value for x, plug -3 into the equation y = x + 6

y = -3 + 6 = 3

The final answer is D) {-3,3}

*btw in case you didn't know this, the first number in an ordered pair is "x" while the second is "y"
Verizon [17]3 years ago
3 0
Let y=x+6 be equation 1...
Replace equation 1 in equation 2
X+6 =-2x-3
X+2x = -3 -6
3x = -9
X = -3
You might be interested in
it is known that the population proton of utha residnet that are members of the church of jesus christ 0l6 suppose a random samp
Lady_Fox [76]

Answer:

0.0838 = 8.38% probability of obtaining a sample proportion less than 0.5.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

Proportion of 0.6

This means that p = 0.6

Sample of 46

This means that n = 46

Mean and standard deviation:

\mu = p = 0.6

s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.6*0.4}{46}} = 0.0722

Probability of obtaining a sample proportion less than 0.5.

p-value of Z when X = 0.5. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.5 - 0.6}{0.0722}

Z = -1.38

Z = -1.38 has a p-value of 0.0838

0.0838 = 8.38% probability of obtaining a sample proportion less than 0.5.

8 0
3 years ago
How many solutions does this equation have?<br><br> –5(6y + 7) = –17y + 7 − 10y
aalyn [17]

Answer:

y=-14

Step-by-step explanation:

3 0
2 years ago
Find the total surface area of the following
xeze [42]

Step-by-step explanation:

The volume of the cone is:

1/3 *π* r² *h =

1/3 *π *4* 2square root of 3=

(8*square root of 3*π)/3

7 0
3 years ago
Expand a logarithmic expression
ivanzaharov [21]

The logarithmic expression is

log (\sqrt{z^5}/(x^3y))

To expand the expression we have to use some properties of logarithm.

We know that log(m/n) = log (m) - log(n)

By using this property we can write,

log(\sqrt{z^5}) - log(x^3y)

Square root means to the power 1/2, so for \sqrt{z^5}, we can write z^(5/2).

log(z^(5/2)) - log(x^3y)

Now we have to use another property of logarithm.

We know that, log(mn) = log(m) + log(n)

So we will use this property to log(x^3y)

log(z^(5/2)) - log(x^3y)

log(z^(5/2)) - (log(x^3) + log(y))

log(z^(5/2)) - log(x^3) - log(y)

Now we have to use another property of logarithm.

We know that, log(a^m) = m log(a)

By using this property we can write,

(5/2)log(z) - 3log(x) - log(y)

This is the required aswer here.

8 0
3 years ago
Read 2 more answers
If the price of a purse increased from $45 to $54, what was the percent of increase
Marrrta [24]
If you set it up in cross multiplication then you would have (x/100 = 45/54) then cross multiply so then i would look like this (54x/4,500) so from there you would divide 54 from 4,500 i hope this helps in any way  oh and it should come up to be 83.3333333 which would be 83% lol
5 0
3 years ago
Read 2 more answers
Other questions:
  • Use mental math to find the difference. 1254 - 320
    12·2 answers
  • Given: WZ perpendicular to WY, WZ bisects VY, and m angle V = 40.
    10·2 answers
  • How many 1/9make up2/6
    15·1 answer
  • 17 to 3 with a total of 740.<br>Equivalent ratios
    12·1 answer
  • Expand by using the distributive property: (a + bc)2x
    7·2 answers
  • Solve each system using substitution: 7x-2y=1 2y=x-1
    7·1 answer
  • The sum of two numbers is 40. The larger number is 10 more than twice the smaller number. Find the numbers
    6·1 answer
  • Answer all please number 2
    6·1 answer
  • hey girlies im bored and need friends add my discord fruitloops#5035 anyone is welcomed. Also enjoy the free points
    11·2 answers
  • If you currently have a (7) in your hand and you were to add two more cards to that (7), but the total sum of the cards is still
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!