x + y = 5.90
2x + 4y = 16.80

Answer:

The answer is b) Solve the unequality

Other than the unit of measurement i am genuinely confused by this because (as far as I know) there is no possible way of figuring this out. The unit is obviously meters but I have no idea what the answer is. You should ask your teacher to explain it to you because it's confusing.

We can approximate this value using a calculator to get the final answer as: \[\text{Distance}\approx 7.90\] Therefore, the distance between the given points is approximately 7.90 units.

To find the distance between two given points in a coordinate plane, we use the distance formula. This formula is based on the Pythagorean theorem, which states that in a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. In this case, the two sides are the horizontal and vertical distances between the two points.

We simply substitute the values of the given points in this formula to find the distance between them.In this particular case, we are given two points $t(13,\ 1.6)$ and $v(5.4,\ 3.7)$. We substitute these values in the distance formula and simplify to get the answer. Since the coordinates are given in decimal form, we round off the answer to two decimal places. This gives us an approximate answer of 7.90 units, which is the distance between the given points.

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The given equation is 7(x+4) = -21 . Therefore, the value of x is 7

In mathematics, an equation is a formula that connects two expressions with the equal sign = to indicate that they are equal. An equation is made up of two expressions joined by an equal sign ("="). Expressions for both sides of the equals sign are called the "left side" and the "right side" of the equation. Many times the right side of the equation is assumed to be zero. Assuming this does not reduce generality, this can be achieved by subtracting the right side from both sides.

According to the Question:

The given equation is:

   7(x+4)= -21

⇒ 7x + 28 = -21

⇒ 7x = -49

⇒ x = 7

Complete Question:

Solve the Equation : 7(x+4)= -21

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The equation of the tangent line to the curve `y = 2ex cos(x)` at the point (0,2) is given by `y = 2ex + 2`.

To find an equation of the tangent line to the curve at the given point (0,2) whose equation is given by `y = 2ex cos(x)`, we need to determine the derivative `y'` of `y = 2ex cos(x)` first. Using the product rule, we have;

`y = 2ex cos(x)`...let `u = 2ex` and `v = cos(x)`, then `u' = 2ex` and `v' = -sin(x)`.`y' = u'v + uv'` `= 2ex cos(x) - 2ex sin(x)` `= 2ex(cos(x) - sin(x))`

Therefore, the derivative of `y = 2ex cos(x)` is `y' = 2ex(cos(x) - sin(x))`.

The equation of the tangent line to the curve at the point (0,2) is obtained by using the point-slope formula, which is given by: `y - y1 = m(x - x1)`where `(x1,y1)` is the point of tangency, `m` is the slope of the tangent line.

Substituting the values of `m`, `x1` and `y1`, we obtain: `m = y' |(0,2)` `= 2e(1 - 0)` `= 2e`Using the point-slope formula with `(x1,y1) = (0,2)` and `m = 2e`, we have: `y - 2 = 2e(x - 0)` `y - 2 = 2ex` `y = 2ex + 2`

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First let's define recursive and explicit functions.

In explicit functions, you can find the value of any term in the sequence, and in recursive function you can find the value of a term if you have the value of the term before.

So h(x) is an explicit function, because you can use any value of x to find the value of any h(x).

Also, h(x) is a geometric function, because its value increases exponentially. In order to be an arithmetic function, the difference of two consecutive values needs to be the same, and this doesn't happen in h(x).

So the answer is the fourth option.

We're 95% confident that the true population mean is between 31.361 and 37.039 minutes, with a margin of error of 2.839 minutes.

To find the t-value from the t-distribution table, we need to know the degrees of freedom. Since we have a sample size of 22, the degrees of freedom are 22-1=21. Looking up the t-value with 21 degrees of freedom and a 95% confidence level, we get 2.080.

Plugging in this value, we get:

CI = 34.2 ± 2.080*(7.1/√22)

CI = 34.2 ± 2.839

Therefore, the 95% confidence interval for the population mean commute time to work is (31.361, 37.039). This means that if we were to take many random samples of size 22 from the population and construct a 95% confidence interval for each sample, 95% of those intervals would contain the true population mean.

The margin of error of y is the amount added and subtracted from the sample mean to get the upper and lower bounds of the confidence interval. In this case, the margin of error is 2.839 minutes.

This means that we're 95% confident that the true population mean commute time to work is between 31.361 and 37.039 minutes, with a margin of error of 2.839 minutes.

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Answer:

x = 60

Step-by-step explanation:

That square on the angle means 90 degrees so since the other angle is 30 that means x has to be 60

(a) The total number of possible outcomes of the experiment is 25 outcomes .

(b) The probability of the event that the first ball drawn is blue is 2/5 .

In the question ,

it is given that ,

the number of blue balls in the urn = 2 ( b1 and b2)

the number of white balls in the urn = 3 (w1 , w2 and w3)

also given that ,

one ball is drawn, its color is recorded and is replaced in urn. then another ball is drawn and the color is recorded .

Part(a) ,

the total number of possible outcomes for experiment will be

b1b1, b1b2, b1w1, b1w2, b1w3

b2b1, b2b2, b2w1, b2w2, b2w3

w1b1, w1b2, w1w1, w1w2, w1w2

w2b1, w2b2, w2w1, w2w2, w2w3

w3b1, w3b2, w3w1, w3w2, w3w3 .

So , total number of outcomes is = 25 .

Part(b) ,

From Part(a) , we can see that the outcomes with first ball blue are

b1b1, b1b2, b1w1, b1w2, b1w3

b2b1, b2b2, b2w1, b2w2, b2w3,

the number of outcomes with first ball blue is = 10 .

So , the probability = (number of outcomes with first ball blue)/(total number of outcomes) .

= 10/25

= 2/5 .

Therefore , total number of outcomes is 25 and the probability that first ball is blue is 2/5 .

The given question is incomplete , the complete question is

An urn contains two blue balls (denoted b1 and b2) and three white balls (denoted w1,w2, and w3). one ball is drawn, its color is recorded, and it is replaced in the urn. then another ball is drawn and its color is recorded.

(a) let b1w2 denote the outcome that the first ball drawn is b1 and the second ball drawn is w2. because the first ball is replaced before the second ball is drawn, the outcomes of the experiment are equally likely. the total number of possible outcomes of the experiment is         .

(b) consider the event that the first ball that is drawn is blue. what is the probability of the event ?

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The probability that the mean battery life would be greater than 1173.8 minutes is 0.9588

We can solve this problem using the central limit theorem, which tells us that the distribution of sample means from a population with a known variance becomes approximately normal as the sample size increases.

The standard error of the mean can be calculated as

SE = σ / sqrt(n)

where σ is the population standard deviation, n is the sample size

Here, we are given that the population variance is 8100, so the population standard deviation is the square root of 8100, which is 90.

SE = 90 / sqrt(72) = 10.6066

Next, we need to standardize the sample mean using the z-score formula

z = (X - μ) / SE

where X is the sample mean, μ is the population mean.

Here, the population mean is given as 1192 minutes and the sample mean we are interested in is 1173.8 minutes.

z = (1173.8 - 1192) / 10.6066 = -1.7356

We want to find the probability that the sample mean is greater than 1173.8 minutes. Since we have a negative z-score, we need to find the area to the right of this value on a standard normal distribution. We can use a z-table or a calculator to find this probability.

Using a standard normal distribution table, we find that the area to the right of z = -1.7356 is 0.9588.

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The correct answer is not listed among the given options. The area of triangle ABC is approximately 220.5 square inches.

To find the area of triangle ABC, we can use the fact that the area of similar triangles is proportional to the square of their corresponding side lengths.

Since triangle ABC is similar to triangle PRT, we can set up the following proportion:

(AB/PR)² = Area of triangle ABC/Area of triangle PRT

Given that AC = 15 inches and PT = 6 inches, we can substitute these values into the proportion:

(AB/6)² = Area of triangle ABC/24

Simplifying the equation, we have:

AB²= 24 * 36
AB² = 864

Taking the square root of both sides, we find:

AB ≈ 29.4 inches

Finally, we can find the area of triangle ABC by substituting AB into the formula:

Area of triangle ABC = (1/2) * AC * AB
Area of triangle ABC = (1/2) * 15 * 29.4
Area of triangle ABC ≈ 220.5 square inches

Therefore, the area of triangle ABC is approximately 220.5 square inches.

In conclusion, the correct answer is not listed among the given options. The area of triangle ABC is approximately 220.5 square inches.

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Answer:

Step-by-step explanation:

Here, we want to graph the given equations

1. y = 2x - 3

The general form of the equation of a straight line is;

y = mx + b

m is the slope and b is the y-intercept

To plot the line, we need the x intercept and the y-intercept

At the x-intercept, the value of y is zero

at the y-intercept . the value of x is zero

From the equation, we have the y-intercept as -3

To get the x-intercept, set y = 0

0 = 2x - 3

2x = 3

x = 3/2

x = 1.5

so to graph the line, we have to join the points ;

(0,-3) and (1.5,0)

b) y = -3x + 2

The y-intercept is 2

To get the x intercept, set y = 0

0 = -3x + 2

3x = 2

x = 2/3

so, we have to join the points (2/3,0) and (0,2)

We have the lines plotted as an attachment

-2 1/5

at least I think so lol

The metric system is defined as the decimal system of units based on the meters, kilograms, and second as the units of length, mass, and time respectively. The imperial system is defined as the measurement system used in countries like the UK, Liberia, Myanmar, etc. that uses units like an inch, pound, ton etc.

The Metric and Imperial systems are both systems of measurement. That is, they are not just one unit of measure, but are correlated systems of many units of measure – measuring length and area, weight and mass, volume, force, temperature etc.

The imperial system of measurement is defined as a system that originated in Britain and came to formal use in the early 19th century with the Weights and Measures Act of 1824 and 1878. It uses some of the commonly used units there like an inch, ton, pound, gallon, pint, etc.

Most countries use the metric system which uses the measuring units such as meters and grams, and adds prefixes like kilo, milli, and centi to count orders of magnitude.

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Using the given digits only once , the four 2 digit prime numbers are 23 , 41 , 59 , 67  and the the sum of the 4 prime numbers is 190 .

Prime Numbers can be defined as numbers that is greater than 1 and whose only factors are 1 and itself .

For Example : 2 is prime number , 11 is a prime number .

In the question ,

9 digits are given as 1, 2, 3, 4, 5, 6, 7, and 9  

we have to form 4 two - digit prime numbers , using each digit only once ,

So , the prime numbers using the given digits using the digits only once is

(i) 23

(ii) 41

(iii) 59

(iv) 67

and the sum of the 4 prime numbers is = 23 + 41 + 59 + 67

= 190

Therefore , the 4 prime numbers are 23 , 41 , 59 , 67 and their sum is 190 .

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Answer:

C) festive

Step-by-step explanation:

I'm not completely sure but it's the best choice!

Hope this helps! :)

tell me if i'm wrong

Answer:

The value of x in centimeters is 22.5 cm

Step-by-step explanation:

The corresponding sides of the similar triangles are proportion which means have equal ratios

∵ Δ ABC is similar to Δ FGH

∵ AB and FG are corresponding sides

∵ BC and GH are corresponding sides

∵ AC and FH are corresponding sides

→ That means the ratios between them are equal

∴ \(\frac{AB}{FG}\)  =  \(\frac{BC}{GH}\)  =  \(\frac{AC}{FH}\)

∵ AB = 6 cm and FG = 15 cm

∵ BC = 5 cm and GH = 12.5 cm

∵ AC = 9 cm and FH = x

→ Substitute them in the rule above to find x

∴ \(\frac{6}{15}\)  =  \(\frac{5}{12.5}\)  =  \(\frac{9}{x}\)

→ By using cross multiplication with the 1st and 3rd ratios

∵ 6 × x = 15 × 9

∴ 6x = 135

→ Divide both sides by 6 to find x

∵ \(\frac{6x}{6}\) = \(\frac{135}{6}\)

∴ x = 22.5 cm

∴ The value of x in centimeters is 22.5 cm

If a power series matches a function f(x) exactly everywhere, then the radius of convergence is infinite.

This means that the power series converges for all values of x. In other words, the power series can be used to approximate the function f(x) with arbitrary accuracy for any value of x.

This is a very powerful tool in mathematics and has many practical applications in science, engineering, and other fields.

The proof that a power series with infinite radius of convergence matches a function f(x) exactly everywhere is based on the fact that a power series is a sum of infinitely many terms, each of which is a polynomial in x.

By adding up these polynomials, we can approximate any function f(x) to an arbitrary degree of accuracy. The only limitation is that we need to know the coefficients of the power series,

which can be obtained by differentiating or integrating the function f(x) or by using other mathematical techniques. Once we have the coefficients, we can plug them into the power series formula and get an exact match for the function f(x).

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Answer:

The 12th Term is 67.

The width of pool deck is 7 ft and new dimensions of pool and deck are 21 ft and 35 ft .

In the given question we have,

Area of whole background ( pool + deck) = 1176 ft²------(1)

Area is a two dimensions quantity . so, we work here in 2-D.

length of pool = 28 ft , width of pool= 14 ft

let the width of deck be x ft . Now, the new dimensions are following

length of pool and deck = 28 + x + x = (28+2x ) ft

width of pool and deck = 14 + x + x = (14+ 2x) ft

here, 2x include in lenth and width for surronding deck.

total area of pool and deck ( backyard ) = lenth × width = 1176 ft² ( from (1) )

(28+2x) ( 14+2x) = 1176 ----(2)

Now, we shall solve above equation (2) and find out value of x

28×14 + 56x + 28x + 4x^2 = 1176

=> 4x²+ 84x + 392 - 1176 = 0

=> 4x² + 84x - 784=0 => x² + 21x - 196 = 0

=> x²+ 28x - 7x - 196 = 0 => x(x+ 28) - 7(x+28)=0

=> (x+28) (x-7) = 0

either x + 28= 0 or x - 7 = 0 =>either x= -28 or x= 7

but width can't be negative value so, discard

x= -28.

Hence, the width of pool deck is 7 ft.

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Yes, the mean and standard deviation of a sampling distribution can be calculated even if the population is not normal.

However, it is important to note that certain conditions must be met for the sampling distribution to be approximately normal, particularly when the sample size is large due to the Central Limit Theorem.

Assuming the sampling distribution meets the necessary conditions, here's how you can calculate the mean and standard deviation:

Mean of the Sampling Distribution:

The mean of the sampling distribution is equal to the mean of the population. Regardless of the population's distribution, the mean of the sampling distribution will be the same as the mean of the population.

Standard Deviation of the Sampling Distribution:

If the population standard deviation (σ) is known, the standard deviation of the sampling distribution (also known as the standard error) can be calculated using the formula:

Standard Deviation (σ_x(bar)) = σ / √n

where σ_x(bar) represents the standard deviation of the sampling distribution, σ is the population standard deviation, and n is the sample size.

If the population standard deviation (σ) is unknown, you can estimate the standard deviation of the sampling distribution using the sample standard deviation (s). In this case, the formula becomes:

Standard Deviation (s_x(bar)) = s / √n

where s_x(bar) represents the estimated standard deviation of the sampling distribution, s is the sample standard deviation, and n is the sample size.

It is important to keep in mind that these calculations assume that the sampling distribution is approximately normal due to the Central Limit Theorem. If the sample size is small or the population distribution is heavily skewed or has extreme outliers, the sampling distribution may not be approximately normal, and different techniques or approaches may be required to estimate its properties.

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Answer:

3

Step-by-step explanation:

x/1= 9/3

solve to get 3

Answer:

X = 3

Step-by-step explanation:

1. Find the difference between 1 and 3. The larger triangle is being multiplied by 3

2. To find x you must divide 9 by 3 since the bigger triangle is 3 times bigger then the smaller one. X then equals 3

Hope that helps

Let me know if it is confusing

Answer:

7

Step-by-step explanation:

x + 4y = 12

4y = -x + 12

Line G:

y = -1/4x + 3

Line H:

y = 4x + b

-5 = 4(-3) + b

-5 = -12 + b

7 = b

Answer:

correct bayan HAHAHAHAHAHA

Answer:

Yes

Step-by-step explanation:

4 times 932073 equals 3728292

Answer:

yes

Step-by-step explanation:

3,728,292 / 4 = 932,073

92 is divisible by 4.

92 / 4 = 23

Answer:

-3

Step-by-step explanation:

- 9/4 X 4/3

-9 X 1/3 =

-3

I hope this helps! If it does could you please mark me brainliest?

Answer:

5

Step-by-step explanation:

..................

Answer:

4 is the answer

Step-by-step explanation:

the answer is 4

19.89% is the percentage decrease of the depth of the lake from January to August.

A quantity or ratio can be expressed as a percentage of 100 by using the word "percentage." Comparing two or more numbers and illustrating how significantly one number differs from the other in proportion to the whole is a popular usage for this technique. If a baseball originally costs $12 and is discounted by 20%, for instance, its new price would be $12 x 20/100 = $2.40 less than the original price. In other words, after the reduction, the ball will cost $12 - $2.40 = $9.60. A percentage may often be determined by dividing a quantity by its entirety and multiplying the result by 100. For instance, if a baseball bat costs $100 and is reduced by 30%, its new cost would be $100 x 30/100, which equates to $30 less.

How to solve?

The depth of the lake decreased by 943 - 754.4 = 188.6 feet from January to August.

The percentage decrease is (188.6 / 943) x 100 = 19.89%

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The future value of the investment when Jack is ready to purchase the vacation home is $44,924.

To solve this problem, we can use the formula for future value of an annuity:

FV = Pmt x [(1 + r)^n - 1] / r

Where:

Pmt = $1000 (quarterly contribution)
r = 0.021 (annual interest rate)
n = 40 (number of quarters until Jack turns 50)

Plugging in the numbers, we get:

FV = $1000 x [(1 + 0.021)^40 - 1] / 0.021
FV = $44,924.38

Therefore, the future value of Jack's investment, rounded to the nearest dollar, is $44,924. So the correct answer is $44,924.

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