Help pls… I can’t again… btw there is 2 pages

Answer:

Step-by-step explanation:

We can use the formula:

average speed = (speed downstream + speed upstream) / 2

We are given the speed downstream is 8 miles per hour and the speed upstream is 2 miles per hour. Therefore,

average speed = (8 + 2) / 2 = 5 miles per hour

So the answer is (B) 5.0 miles per hour to the nearest tenth.

The solution of the evaluated expression, 1 / 3 x² for x = 6 is 12.

An expression is a combination of numbers, variables and operations such as addition, subtraction, multiplication, division etc.

To evaluate an expression means to find the value of the expression when the variable is replaced by a given number.

Therefore, let's evaluate the expression as follows:

1 / 3 x² for x = 6

Hence, let's substitute the value of x in the expression.

1 / 3 (6)² = 1 / 3 (36) = 12

learn more on expression here: https://brainly.com/question/30944447

#SPJ1

the length of the rectangle is 9 units

the width of the rectangle is 2 units

the area of the rectangle is 18 square units

the area of the triangle is 9 square units

to find the length and width just count the number of units along the bottom and along the side. To find the area of the rectangle, do the length times the width. To find the area of the triangle divide the area of the rectangle by 2

As a consequence, in a triangle with angles 30-60-90 and legs 6 long and x short, x is equal to 2√3  and y is equal to 12.

Three-sided polygons, which are closed plane figures with straight edges, include triangles. One of the most fundamental and significant geometric and mathematical shapes, triangles have a wide range of useful characteristics and applications. Typically, a, b, and c are used to denote the triangle's three edges, and A, B, and C are used to denote the triangle's three angles. A triangle's inner angles are always added up to 180 degrees.

given

The percentage of the side lengths in a triangle with sides of 30-60-90 is:

Hypotenuse Means 1: Long leg: Short leg: 3: 2

In this quadrilateral, we have the following:

Hypotenuse = y; short limb = x; long leg = 6.

With the number mentioned above, we can write:

x : 6 : y = 1 : √3 : 2

For x and y, we can use cross-multiplication to get the following result:

x/1 = 6/√3

y/2 = 6/1

When we simplify these formulae, we obtain:

x = 6/√3 = 2√3

y = 12

As a consequence, in a triangle with angles 30-60-90 and legs 6 long and x short, x is equal to 2√3  and y is equal to 12.

To know more about triangle visit:

https://brainly.com/question/2773823

#SPJ1

Answer:

Step-by-step explanation:

To start, let's use algebra to set up some equations based on the information we have. We know that Trip has a total of 15 coins and their total value is 95 cents. Let's call the number of nickels Trip has "n" and the number of dimes "d". Then we can write:

n + d = 15 (since Trip has a total of 15 coins)

0.05n + 0.1d = 0.95 (since the total value of the coins is 95 cents)

Next, we know that four of the coins are each worth twice as much as the rest. Let's call the value of the "rest" coins "x". Then the value of the four coins that are worth twice as much is 2x. We can set up an equation based on the total value of the coins using these values:

4(2x) + 11x = 95

Simplifying this equation, we get:

19x = 95

x = 5

Now we know that each of the "rest" coins is worth 5 cents. We can substitute this value into the equation for the total value of the coins to get:

4(2*5) + 11(5) = 95

Simplifying this equation, we get:

40 + 55 = 95

So our values for n and d are correct: Trip has 11 nickels and 4 dimes.

To justify this argument, we can use a proof by contradiction. Suppose that Trip had a different number of nickels or dimes. If Trip had more than 11 nickels, then the total value of the nickels alone would be greater than 55 cents, which is impossible since the total value of all the coins is only 95 cents. Similarly, if Trip had more than 4 dimes, then the total value of the dimes alone would be greater than 40 cents, which is also impossible. Therefore, Trip must have exactly 11 nickels and 4 dimes, and our argument is justified.

Answer:

[tex]( \frac{1}{2} + a) {}^{2} [/tex]

Step-by-step explanation:

There's your answer

Cameron can use the boards as they are for his corner shelves.

To determine if the triangular boards can be used for Cameron's corner shelves, check if they satisfy the condition for the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Let's check each combination of sides:

18 inches + 18 inches = 36 inches > 24 inches (satisfied)

18 inches + 24 inches = 42 inches > 18 inches (satisfied)

18 inches + 24 inches = 42 inches > 18 inches (satisfied)

Therefore, all three combinations of sides satisfy the triangle inequality theorem, and the triangular boards can be used for Cameron's corner shelves.

Learn more on triangular boards here: https://brainly.com/question/3308386

#SPJ1

The percentage did the total yield, by weight, of her fruit harvest declined by approximately 24%, which is option B.

what is percentage ?

Percentage is a way of expressing a number or quantity as a fraction of 100. It is often denoted by the symbol % (percent). For example, 50% means 50 out of 100, or 50/100, or the equivalent fraction 1/2.
Percentages are commonly used in many real-world situations, such as in finance, statistics, and everyday life. They are often used to express changes, differences, or ratios between two values.

According to the question:

To solve this problem, we need to calculate the total weight of fruit harvested in the first year and the total weight of fruit harvested in the second year, and then calculate the percentage decline.

Total weight of fruit harvested in the first year = 40 + 12 = 52 pounds

After a 25% decline, the weight of pears in the second year = 40 - 0.25(40) = 30 pounds

After a 20% decline, the weight of plums in the second year = 12 - 0.20(12) = 9.6 pounds

Total weight of fruit harvested in the second year = 30 + 9.6 = 39.6 pounds

Percentage decline in the total yield of fruit harvest = [(52 - 39.6)/52] x 100% = 23.8%

Therefore, the answer is approximately 24%, which is option B.

To know more about Percentage visit:
https://brainly.com/question/28998211
#SPJ1

Answer:

x=3

Step-by-step explanation:

Let's assume that the customer ordered x burrito bowls.

The cost of x burrito bowls at $6.50 each is 6.50x.

The cost of the plate of corn tacos is $12.96.

The total cost of the order is $32.46.

So we can set up the equation:

6.50x + 12.96 = 32.46

Subtracting 12.96 from both sides, we get:

6.50x = 19.50

Dividing both sides by 6.50, we get:

x = 3

Therefore, the customer ordered 3 burrito bowls.

Your number line can be broken apart by using a measuring thing like a scale.

What is a number line?

By aligning the numbers on a line, a number line allows you to visualize the size of the numbers. Typically horizontal in shape, a number line has zero in the center. The numbers are increasing and positive as you move to the right. The numbers rise and become more and more negative as you move to the left.

Why do we need a number line?

Number lines offer a method for mentally adding and subtracting. It's simple to imagine them as a type of support system for those in need, but this is untrue. These are crucial because they encourage effective mental arithmetic techniques, according to research.

So by using a scale you can measure the distance accurately and place the numbers in accurate positions.

To know more about number line visit:

https://brainly.com/question/16191404

#SPJ1

False, the given two proportions are not equal.

In this section, the terms ratio and percentage are defined. Both ideas play a significant role in mathematics. Many examples where the notion of the ratio is highlighted may be found in daily life, such as the rate of speed (distance/time) or price (rupees/meter) of a substance.

An equation known as proportion shows that the two ratios presented are equal to one another.

The two given proportions are:

100/210 = 290/340

Simplifying the two we have:

100/210 = 10/21

290/340 = 29/34

We see that the simplified form of the two proportions are different.

Hence, False, the two proportions are not equal.

Learn more about proportion here:

https://brainly.com/question/7096655

#SPJ1

Answer:

The answer could be any number, with the variable x (not x^2, x^3, x^#). So it can be, for example, 6x, 8x, 109x, etc., as long as the variable is the same in each number.

Bank A's CD would earn a greater amount of interest than Bank B's CD.

The interest is greater by $369.91

To determine which CD will earn the greater amount of interest, we can calculate the interest earned by each CD over the 3-year period.

For Bank A's CD, the interest earned would be:

I = P * r * t

I = $12,000 * 0.03 * 3

I = $1,080

For Bank B's CD, the interest earned would be:

A = P * (1 + r/n)^(nt)

A = $12,000 * (1 + 0.025/12)^(123)

A = $12,710.09

The interest earned on Bank B's CD would be the difference between the total amount earned and the original principal:

I = A - P

I = $12,710.09 - $12,000

I = $710.09

Hence, Bank A's CD would earn a greater amount of interest

The interest is greater by

$1,080 - $710.09

= $369.91

Learn more on Calculating which bank's CD will earn greater amount of interest here: https://brainly.com/question/29529281

#SPJ1

Answer:

Step-by-step explanation:

Here are the step-by-step instructions to find the number of ear cleanings that the groomer gave:

Start with the given number of nail trims, which is 15.

Divide the number of nail trims by 5 to find out how many groups of 5 nail trims there are. This gives us: 15 ÷ 5 = 3.

Multiply the number of groups of 5 nail trims by the corresponding ratio of ear cleanings per 5 nail trims, which is 3. This gives us: 3 × 3 = 9.

This means that for every 5 nail trims, the groomer gave 3 ear cleanings, and since the groomer gave 15 nail trims, they gave 9 ear cleanings in total.

So, the pet groomer gave 9 ear cleanings in total.

Answer:

We can start by setting up a ratio of the number of fruit skewers made to the number of liters of milkshake made:

fruit skewers : milkshake = 202020 : 444

Simplifying this ratio by dividing both sides by 444, we get:

fruit skewers : milkshake = 455 : 1

This means that for every 1 liter of milkshake made, Atilio makes 455 fruit skewers. Therefore, if Atilio makes 202020 liters of milkshake, they would make:

202020 x 455 = 91919100

So, Atilio would make 91919100 fruit skewers for the party.

Step-by-step explanation:

To find the circle with center (3, -4) and radius 64, we again replace 64 with 64² in the equation, and get:

(x - 3)² + (y + 4)² = 4096

Several everyday items, such as turning ceiling fans, turning car wheels, spinning windmill blades, and turning gas turbine gears, exhibit circular motion. Another is an earth-orbiting satellite that was built by people.

The equation (x + 3)² + (y - 4)² = 64 represents a circle with center (-3, 4) and radius 8.

To find the circle with center (-3, 4) and radius 64, we replace 64 with 64² in the equation and get:

(x + 3)² + (y - 4)² = 4096

This circle has center (-3, 4) and radius 64.

To find the circle with center (3, -4) and radius 8, we replace (x + 3) with (x - 3) and (y - 4) with (y + 4) in the equation, and get:

(x - 3)² + (y + 4)² = 64

This circle has center (3, -4) and radius 8.

To find the circle with center (3, -4) and radius 64, we again replace 64 with 64² in the equation, and get:

(x - 3)² + (y + 4)² = 4096

This circle has center (3, -4) and radius 64.

To know more about circular visit:

https://brainly.com/question/13731627

#SPJ1

The clerk did not give Mary any change, so that is the correct response.

A price decrease from the normal or list amount or a proportional deduction from such a debt account, typically applied in exchange for on-time or cash payments.

The total cost of the shirt and three skirts before the coupon is:

$22.65 + 3($33.31) = $122.58

With the 10% discount, the total cost becomes:

$122.58 - 0.1($122.58) = $110.32

To find out how much change the cashier gave back to Mary, we need to subtract the total cost from the amount of money Mary's mom gave her:

$100.00 - $110.32 = -$10.32

Since the result is negative, it means Mary did not have enough money to pay for her purchases and would have to give the cashier an additional $10.32 to cover the full cost of her shopping.

Therefore, the answer is that Mary did not receive any change from the cashier.

To know more about Discount visit:

https://brainly.com/question/7459025

#SPJ9

The man's daily wage is given as follows:

$42.

The wages are obtained applying the proportions in the context of the problem.

The woman receives $24 for 8 hours of work, hence her hourly wage is given as follows:

24/8 = $3 per hour.

(Hourly wage = Total wages/total hours).

Their wages per hour are in the ratio 7:5, hence the man's hourly wage is obtained multiplying the woman's hourly wage by 7/5, hence:

7/5 x 3 = 21/5 = $4.2 per hour.

The man works 10 hours a day, hence the daily wage is given as follows, multiplying the hourly wage by 10:

10 x 4.2 = $42.

More can be learned about proportions at https://brainly.com/question/24372153

#SPJ1

Using the given ratio we will see that each kilogram costs 15 dollars.

We know that coffee at $12 per kg is mixed with coffee at $16 per kg in the ratio of 1: 3.

Then we have 4 kilograms, and the total cost of these 4 kg is:

1*$12 + 3*$16 = $60

Dividing that between the 4 kilograms:

$60/4 = $15

Each kilogram costs 15 dollars.

Learn more about ratios at.

https://brainly.com/question/2328454

#SPJ1

Answer:

Rosa must save at least $85 to purchase a new MP3 player.

The word "at least" indicates that the amount Rosa needs to save is not less than $85, but it could be more than $85.

Therefore, the inequality that represents the amount of money Rosa must save is:

C) m ≥ 85

This is because the amount Rosa saves, represented by "m", must be greater than or equal to $85 in order to afford the MP3 player.

(a) One patient did not receive the medication.

(b) One patient did not get either the medicine or the placebo.

(c) None of the patients took the drug or experienced migraines (or both).

(d) One patient who received a placebo experienced no migraines.

A variable in algebra is an alphabet that is used to symbolize the unknowable integer. It stands in for the value. An amount that can fluctuate depending on the mathematical issue is referred to as a variable. The generic letters x, y, and z are frequently employed in mathematical expressions and equations. A variable, then, is a symbol denoting a number whose value is unknown.

from the question:

(a)

Logical expression: ∀x D(x)

Negation: ¬(∀x D(x))

Applying De Morgan's law: ∃x ¬D(x)

One patient did not receive the medication.

(b)

Logical expression: ∀x (D(x) ∨ P(x))

Negation: ¬(∀x (D(x) ∨ P(x)))

Applying De Morgan's law: ∃x ¬(D(x) ∨ P(x))

Applying De Morgan's law: ∃x (¬D(x) ∧ ¬P(x))

One patient did not get either the medicine or the placebo.

(c)

Logical expression: ∃x (D(x) ∧ M(x))

Negation: ¬∃x (D(x) ∧ M(x))

Applying De Morgan's law: ∀x ¬(D(x) ∧ M(x))

Applying De Morgan's law: ∀x (¬D(x) ∨ ¬M(x))

None of the patients took the drug or experienced migraines (or both)

(d)

Logical expression: ∀x (P(x) → M(x))

Using the conditional identity: ∀x (¬P(x) ∨ M(x))

Negation: ¬∀x (¬P(x) ∨ M(x))

Applying De Morgan's law: ∃x ¬(¬P(x) ∨ M(x))

Applying De Morgan's law: ∃x (P(x) ∧ ¬M(x))

One patient who received a placebo experienced no migraines.

To know more about the variable visit:

brainly.com/question/29827463

#SPJ9

complete question;

In the following question, the domain of discourse is a set of male patients in a clinical study. Define the following predicates:

P(x): x was given the placebo

D(x): x was given the medication

M(x): x had migraines

Translate each statement into a logical expression. Then negate the expression by adding a negation operation to the beginning of the expression. Apply De Morgan's law until each negation operation applies directly to a predicate and then translate the logical expression back into English.

Sample question: Some patient was given the placebo and the medication.

∃x (P(x) ∧ D(x))

Negation: ¬∃x (P(x) ∧ D(x))

Applying De Morgan's law: ∀x (¬P(x) ∨ ¬D(x))

English: Every patient was either not given the placebo or not given the medication (or both).

(a)Every patient was given the medication.

(b)Every patient was given the medication or the placebo or both.

(c)There is a patient who took the medication and had migraines.

(d)Every patient who took the placebo had migraines. (Hint: you will need to apply the conditional identity, p → q ≡ ¬p ∨ q.)

Answer:

55 KG

Step-by-step explanation:

To convert pounds to kilograms, we can use the conversion factor 1 kg = 2.2 lbs.So,121 lbs = (121 lbs) * (1 kg/2.2 lbs)Simplifying the expression, we have121 lbs ≈ 55.0 kgRounding to the nearest tenth, we get the final answer:121 lbs ≈ 55.0 kg

Answer:

To convert 121 pounds into kilograms, we can use the conversion factor:

1 kg = 2.2 lb

Dividing both sides of this equation by 2.2, we get:

1 lb = 0.454545 kg (rounded to the nearest tenth, this is 0.5 kg)

Therefore, we can convert 121 pounds to kilograms by multiplying by 0.454545:

121 lb * 0.454545 kg/lb = 54.884545 kg

Rounding this to the nearest tenth gives:

54.9 kg

Therefore, 121 pounds is approximately equal to 54.9 kilograms when rounded to the nearest tenth.

intercept - means to cross through

answer = a - the graph crosses the x=axis

Therefore, there are 278,256 different ways for 5 students to form a group from a class of 34 students.

Factorial, followed by an exclamation point, is the sum of all positive integers that are less than or equal to a specific positive integer in mathematics. Factorial seven is therefore represented by the symbol 7!, which is made up of the letters 1 2 3 4 5 and 7. By definition, factororial 0 is equal to 1.

The number of ways to form a group of 5 students out of a class of 34 students can be calculated using the combination formula:

C(34, 5) = 34! / (5! (34-5)!) = (34 × 33 × 32 × 31 × 30) / (5 × 4 × 3 × 2 × 1) = 278,256.

Therefore, there are 278,256 different ways for 5 students to form a group from a class of 34 students.

To know more about factorial visit:

https://brainly.com/question/1483309

#SPJ1

The monthly payments are $248.53.

The total amount that he will pay $14911.8.

The amount of interest is $4911.8

What is the interest rate?

The amount of interest due each period expressed as a percentage of the amount lent, deposited, or borrowed is known as an interest rate. The total interest on a loaned or borrowed sum is determined by the principal amount, the interest rate, the frequency of compounding, and the period of time the loan, deposit, or borrowing took place.

The formula of monthly payment is

P = [tex]\frac{r (PV)}{1-(1-r)^{-n}}[/tex]

r is the rate of interest.

PV is the present value

n is the number of terms.

The bank offers you an installment loan with an interest rate of 17% over a 60-month term. The cost of the car is $10,000.

PV = $10,000

n = 60

r = 17%/12 = 0.17/12

The monthly installment is

P = [tex]\frac{ \frac{0.17}{12}\times 10000}{1-(1- \frac{0.17}{12})^{-60}}[/tex]

P = 248.53

The monthly installment is $248.53.

Total payment is (60 ×$248.53) = $14911.8

The interest is $(14911.8 - 10000) = $4911.8

To learn more about interest monthly instalments, click on the below link:

https://brainly.com/question/15574786

#SPJ1

By answering the above question, we may state that As a result, $35.40 interest in simple interest is due for the use of the funds.

Divide the principal by the interest rate, the length of time, and other factors to arrive at simple interest. Simple return = principal + interest + hours is the marketing formula. This method makes it easiest to compute interest. The most typical technique to figure out interest is as a portion of the principle sum. He will only pay his share of the 100% interest, for example, if he borrows $100 from a buddy and promises to pay it back with 5% interest. $100 (0.05) = $5. When you borrow money, you must pay interest, and when you give it out, you must charge interest. Interest is often determined as an annual percentage of the loan total. The interest on the loan is this percentage.

For simple interest, use the formula:

I = P * r * t

where I represents the amount of interest payable, P the amount borrowed, r the interest rate, and t the length of time in years.

Inputting the values provided yields:

I = $590 * 0.03 * 2

I = $35.40

As a result, $35.40 in simple interest is due for the use of the funds.

To know more about interest visit:

https://brainly.com/question/28792777

#SPJ1

Answer:

Below

Step-by-step explanation:

Slope,m, is the 'x' coefficient =  -1   for this line   y = -x+4-2

Answer:

The scale of measurement used by the researcher is interval scale as the data is continuous and there are equal intervals between the values.

Mean = (1+2+4+5+7+11)/6 = 5

Median = (4+5)/2 = 4.5

Mode = There is no mode in the data set as none of the numbers are repeated.

Range = maximum value - minimum value = 11 - 1 = 10

Sample Variance = ((1-5)^2 + (2-5)^2 + (4-5)^2 + (5-5)^2 + (7-5)^2 + (11-5)^2)/(6-1) = 14.67

Standard Deviation = sqrt(sample variance) = sqrt(14.67) = 3.83

Mean + 2SD = 5 + 2*3.83 = 12.66, rounded to the nearest integer = 13.

According to the Empirical Rule, 68% of the sample lies within 1 standard deviation of the mean. Therefore, we need to find the values that are 1 standard deviation away from the mean:

Lower limit = Mean - SD = 5 - 3.83 = 1.17, rounded to the nearest integer = 1.

Upper limit = Mean + SD = 5 + 3.83 = 8.83, rounded to the nearest integer = 9.

So the number of leaves associated with 68% of the sample is between 1 and 9.

Step-by-step explanation: