y=x^{2}+2x-1
find the following
AOS, Vetex,Roots,Domain,Range, postive/negative, y-intercept

Answer:

The perimeter is 16 yards.

_

Step-by-step explanation:

♤You can solve using the pythagorean theorem.

♡We will be using the variable 'x' to represent the variable 'b' in the picture provided.

◇In the pythagorean theorem, a and b represents bases while the c represents the hypotenuse (diagonal).

\( {a}^{2} + {b}^{2} = {c}^{2} \\ {x}^{2} + {12}^{2} = {20}^{2} \\ {x}^{2} + 144 = 400 \\ \frac{ \: \: \: \: \: - 144 = - 144}{ {x}^{2} = \sqrt{256} } \\ x = 16\)

Approximately 90% of scores fall below this value, and the highest 10% of scores fall above it.

To find the z-score that separates the highest 10% of scores from the lowest 90%, we can use a standard normal distribution table or calculator.

From the table, we can find that the z-score associated with the highest 10% of scores is 1.28, which means that approximately 10% of scores fall above this value.

To find the z-score that separates the highest 10% from the lowest 90%, we need to subtract the z-score associated with the highest 10% from 0. This is because the area under the curve to the left of the z-score represents the percentage of scores that fall below that value. So, if we subtract the area to the right of the z-score associated with the highest 10% from 1, we get the area to the left of that z-score, which is the percentage of scores that fall below it.

Therefore, the z-score that separates the highest 10% of scores from the lowest 90% is:

z = 0 - 1.28 = -1.28

This means that approximately 90% of scores fall below this value, and the highest 10% of scores fall above it.

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Given:

Divide a nonzero whole number by a unit fraction.

Example 1: whole number 32, unit fraction = 1/2

Example 2: whole number 2, unit fraction = 1/5

Example 3: whole number = 20, unit fraction 1/3

The quotient is greater than the whole number

The line /TV/ that we have been asked to find from the information is the question is obtained as 7.

The sine rule, also known as the law of sines, is a trigonometric formula used to find an unknown side or angle in a triangle. It states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is equal for all three sides of the triangle.

We know that the missing angle U is obtained from;

180 - (58.3 + 80)

= 41.7°

Then;

8.9/Sin 58.3 = /TV//Sin 41.7

/TV/ = 8.9 Sin 41.7/Sin 58.3

/TV/ = 5.9/0.85

= 7

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\(QUESTION:\)

a body of mass 10kg at rest is subjected force of 16N. Find the kinetic energy at end of 20s.

\(SOLUTION:\)

\(Given\) \(that:\)

» Finding for the acceleration:

\(a=F/m\)

\(a=16N/10kg\)

\(a=1.6/s^2\)

» Then velocity after 20 seconds will be:

\(v=u+at\)

\(v=0+1.6m/s^2(20s)\)

\(v=32/s^\)

» Now , Finding for the kinetic energy:

\(K=1*2mv^2\)

\(K=1/2(10)(32)^2\)

\(K=5(1024)\)

\(K=5120\) \(J\)

\(ANSWER:\)

===================================

\( \large \sf \underline{Problem:}\)

===================================

\( \large \sf \underline{Answer:}\)

\( \huge \qquad \quad \sf{5,120 \: Joules}\)

===================================

\( \large \sf \underline{Solution:}\)

Firstly, find the acceleration:

Secondly, the velocity after 20 seconds will be:

Lastly, find the kinetic energy:

Hence, the kinetic energy at the end is 5,120 Joules.

===================================

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Answer:

1 - 2/3 = 1/3

Step-by-step explanation:

1            3         3                         2            1                 2

-      x     -     =    -            -             -      x     -         =      -

1            3         3                         3            1                 3

3/3 - 2/3 = 1/3

Answer:

D) (8,-22)

Step-by-step explanation:

I used my graphing calculator.

Answer:

D

Step-by-step explanation:

Answer:

£990

Step-by-step explanation:

£11000 * 2.25% * 4 = £990

Answer:

1.5, -1.5

Step-by-step explanation:

Using the quadratic formula, you should have a plus, and minus solution. These should be your answers.

A quadrilateral whose diagonals do not always bisect each other is a rectangle.

A rectangle is a quadrilateral with four right angles. The diagonals of a rectangle are perpendicular to each other and bisect each other, but not all quadrilaterals with perpendicular diagonals and diagonals that bisect each other are rectangles. For example, a square is a type of quadrilateral with perpendicular diagonals and diagonals that bisect each other, but it has four congruent sides and four right angles, unlike a rectangle.

The word "rectangle" comes from the Latin words "rectus," meaning "right," and "angulus," meaning "angle." This reflects the fact that a rectangle has four right angles.

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Answer:

-5, -2, -2/5, 5/2, 5.2

Step-by-step explanation:

Answer:

x+ 3/2y= 15

Step-by-step explanation:

8x+12y=120

To put the equation into standard form, the leading coefficient has to be 1. So, divide the whole equation by 8.

x+ 3/2y= 15

Mean is used to measure the center of a set of values. It is good for summarizing values which are generally pretty similar to each other.

Mean is more usually referred to as the average. It is calculated by adding up all of the values and dividing by the total number of values. It is a good way for summarizing the center of values which are commonly very similar to each other.

The mean is the most often used measure of central tendency since it uses all values in the data set to give us an average. For data from skewed distributions, the median is better than the mean because it is not influenced by large values.

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Although part of your question is missing, you might be referring to this full question: _________ is used to measure the center of a set of values. It is good for summarizing values that are generally pretty similar to each other.

Answer:

5 hours and 8 minutes is what I got, but i'm not really sure so only put that answer if someone else got that to. (The upcoming and this sentence is pre-written and copy and pasted in every brainly question or comment I write or answer.) If this answer helped you please consider giving it brainliest.

- •Trix•

( Yes I know my - •Trix• thingy is not my user but its what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)

Answer:

reflection over x axis then horizontal stretch by factor of 8/5

Step-by-step explanation:

f(x)=x

h(x) = -f(x)  ... reflection over x axis   (x,y) -> (x,-y)

-f(x) -> g(x) = (-5/8x) ...0 < |5/8| <1  ... horizontal stretch   (x,-y) -> (x / (5/8) , -y)

The linear function of the profit p in terms of the number of computers(x) sold per month is:

F(p)= 4x +1300;

Profit made on selling 450 computers a month = 2500

profit made on selling 600 computers a month= 3100

Then let F(p) be the function representing the profit in terms of the computers sold

Where the number of computer sold are a variable of x

Then,

F(p): 450x = 2500

F(p): 600x = 3100

Using two-point form as both are proportional

y - 3100 = 3100-2500/600-450(x-450)

y - 3100 = 600/150(x-450)

y-3100= 4(x-450)

y-3100= 4x - 1800

y=4x + 3100 - 1800

y = 4x + 1300

where y=F(p) i.e the profit made on the sale of x number of computers per month.

so,

F(p)= 4x +1300;

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There are no solutions to the equation f(x) = g(2).

Given:

f(x) = -0.05x³ - 0.3x² + x - 1

g(2) = |1.1x| + 5.6

To find the solutions to the equation f(x) = g(2), we substitute x = 2 into both functions and equate them:

f(2) = g(2)

Substituting x = 2 into f(x):

f(2) = -0.05(2)³ - 0.3(2)² + 2 - 1

f(2) = -0.05(8) - 0.3(4) + 2 - 1

f(2) = -0.4 - 1.2 + 1

f(2) = -1.6

Substituting x = 2 into g(2):

g(2) = |1.1(2)| + 5.6

g(2) = |2.2| + 5.6

g(2) = 2.2 + 5.6

g(2) = 7.8

Now we can set -1.6 equal to 7.8 and solve for x:

-1.6 = 7.8

This equation has no solution.

Therefore, there are no solutions to the equation f(x) = g(2).

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Answer:

425

Step-by-step explanation:

It will take approximately 39.532 days for $9500 to earn $800 at an annual interest rate of 8.25%.

To find the number of days it will take for $9500 to earn $800 at an annual interest rate of 8.25%, we need to use the formula for simple interest:

Interest = Principal * Rate * Time

In this case, we are given the interest ($800), the principal ($9500), and the annual interest rate (8.25%). We need to solve for time.

Let's denote the time in years as "t". Since we're looking for the number of days, we'll convert the time to a fraction of a year by dividing by 365 (assuming a standard 365-day year).

$800 = $9500 * 0.0825 * (t / 365)

Simplifying the equation:

800 = 9500 * 0.0825 * (t / 365)

Divide both sides by (9500 * 0.0825):

800 / (9500 * 0.0825) = t / 365

Simplify the left side:

800 / (9500 * 0.0825) ≈ 0.1083

Now, solve for t by multiplying both sides by 365:

0.1083 * 365 ≈ t

t ≈ 39.532

Therefore, it will take approximately 39.532 days for $9500 to earn $800 at an annual interest rate of 8.25%.

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Answer:

I assume the answer is D. Haven't done box plots in years tho.

The nth harmonic number is defined as the sum of the reciprocals of the first n positive integers. We can calculate the nth harmonic number using the formula Hn=1+1/2+1/3+...+1/n.

Sure, I'll be glad to help you out!In mathematics, the nth harmonic number is defined as the sum of the reciprocals of the first n positive integers.

The nth harmonic number is defined to be:

$$H_n=1+\frac{1}{2}+\frac{1}{3}+\cdots+\frac{1}{n}$$

Now,  to understand the concept in detail.

For this purpose, let's consider an example:

If we want to find the 5th harmonic number, then we use the formula as shown below:

$$H_5=1+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}$$

Simplifying the above expression we get:

$$H_5=\frac{1}{1}+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}$$$$\frac{1}{1}+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}=\frac{60}{60}+\frac{30}{60}+\frac{20}{60}+\frac{15}{60}+\frac{12}{60}$$$$

=\frac{137}{60}$$

Therefore, the 5th harmonic number is 2.2833.

Now, The nth harmonic number is defined as the sum of the reciprocals of the first n positive integers. We can calculate the nth harmonic number using the formula Hn=1+1/2+1/3+...+1/n.

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Answer:

45 minutes.

Step-by-step explanation:

Yesterday, he made 6 keychains in 30 minutes.

Hugo wants to make 9 keychains today. We need to find how long will it take him to make the keychains.

6 keychains = 30 minutes

1 keychains = (30/6) minutes

For 9 keychains,

\(9\ \text{keychains}=\dfrac{30}{6}\times 9\\\\=45\ \text{minutes}\)

So, to make 9 keychains, it will take 45 minutes.

Answer: 6

Step-by-step explanation:

Since the 3 semicircles are identical, we know that each semicircle has a diameter of 4, meaning they each have a radius of 2.

We can use the fact that (arc length of semicircle) = (pi)(r) to get the arc length of each to be 2pi.

Meaning 2pi + 2pi + 2pi = 6pi.

The friend has to save for 5 and 2/3 of a month to in order to make up the remaining 85 to get the 125 headphone.

An inequality that consists of two or more parts is called a compound inequality. Either "or" or "and" may be used in these components. A number between 5 and 10 could be used as x in an inequality, for instance, if it states that "x is larger than 5 and less than 10". Any time one of the two inequalities is true when the two inequalities are united by the word or, the compound inequality is solved. The two separate solutions have been combined to form the final answer. Inequalities that are separated by "and" or "or" form a compound inequality. The intersection of the inequality graphs is shown by the graph of a compound inequality with a "and."

Cost of the headphone 125.

What the friend have: 40.

What need to save: 125-40 = 85

Let x = amount to be saved per month

Months to save up the 85 is 15

The equation would be 15 x = 85

Therefore x = 85/15

Which is 5 2/3 months.

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Answer:

Step-by-step explanation:

We know that:

Work:

Hence, it will take 1 week for both classmates to catch up with each other. Now, let's substitute the value of w into the first equation to find how many tests have each child passed.

Hence, each child has passed about 9 tests.

Hoped this helped.

\(BrainiacUser1357\)

Answer:

12 inches

Step-by-step explanation: