I need help please please please

Answer:

incomplete question friend

By increasing the irrigation efficiency from 69% to 81%, 607.14 inches of water could be saved.

To find out how much water could be saved by increasing the irrigation efficiency, follow these steps:
Calculate the total amount of water needed for the 83 acres of grapes with the current irrigation efficiency:
  Total water needed (net) = 83 acres * 34 inches/acre = 2822 inches.

Calculate the actual amount of water used with 69% irrigation efficiency:
  Actual water used = 2822 inches / 0.69 = 4089.86 inches
Calculate the new amount of water used if the irrigation efficiency is increased to 81%:
  New water used = 2822 inches / 0.81 = 3482.72 inches.

Determine the amount of water saved by comparing the actual water used with the new water used:
  Water saved = 4089.86 inches - 3482.72 inches = 607.14 inches.

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Answer:

Step-by-step explanation:

34/3 is a fraction.

Any number that can be expressed as a fraction is a rational number.

Correct choice is C

Answer:

he needs 9 cans

Step-by-step explanation:

first,

43L/5L

= 8.6 cans

8.6 cans is not logical therefore u need to round up to 9 cans

Answer:

Step-by-step explanation:

4x + 3 + 2x + 21 = 180

6x + 24 = 180

6x = 156

x = 26

4(26) + 3 = 107

2(26) + 21 = 73

Answer:

The answer is -576

Step-by-step explanation:

-24×+24

–×+= –

-24×24= -576

Answer: 0.3

Hope this helps.

Answer:

0.3

Step-by-step explanation:

It would take the automated car wash 20 hours to wash 120 cars.

What is rate ?

In general, a rate is a measure of how much of something happens within a certain period of time. It can be thought of as a ratio that compares two different units of measurement.

In the context of the problem, the rate at which the automated car wash can wash cars is the number of cars that it can wash per unit of time.

The rate at which the automated car wash can wash cars is 30 cars per 5 hours. To find out how long it would take to wash 120 cars, we can use the formula:

Time = (Number of cars / Rate)

Time = (120 cars / 30 cars per 5 hours)

Time = (120/30) * 5 hours

Time = 20 hours

So it would take the automated car wash 20 hours to wash 120 cars.

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The rate at which the automated car wash can wash cars is 30 cars per 5 hours. To find out how long it would take to wash 120 cars, we can use the formula:

Time = (Number of cars / Rate)

Time = (120 cars / 30 cars per 5 hours)

Time = (120/30) * 5 hours

Time = 20 hours

So it would take the automated car wash 20 hours to wash 120 cars.

Answer:

D

Step-by-step explanation:

i think its D :)

Answer:

D

Step-by-step explanation:

The surface area of the rectangular prism is 88 square inches.

Given that:

Length, L = 6 inches

Width, W = 2 inches

Height, H = 4 inches

Let the prism with a length of L, a width of W, and a height of H. Then the surface area of the prism is given as

SA = 2(LW + WH + HL)

SA = 2(6 x 2 + 2 x 4 + 4 x 6)

SA = 2 (12 + 8 + 24)

SA = 2 x 44

SA = 88 square inches

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Answer:

please see detailed description below

Step-by-step explanation:

equation on straight line is given by y = mx + c (where m is gradient-slope, c is y-axis intercept).

our slope, m, is found by picking two sets of coordinates.

let's pick the two dotted points on the diagram.

(-2 ,0) and (0, -3)

slope = (change in y values) / (change in x values)

= (-3 - 0) / (0 - -2)

= -3 /(0 + 2)

= -3 /2

the graph crosses the y-axis at y = -3.

the equation of the line is y = (-3/2)x - 3

the slope is -3/2

Answer:

-3/2

Step-by-step explanation:

slope=,∆in y axis/∆in x axis

(-3-0)/0-(-2)

-3/(0+2)

=-3/2

Answer:

f-1(x) = (x - 16)/40

B

Step-by-step explanation:

Call f(x) = y

Interchange x and y

x = (5y + 2)*8             Remove the brackets

x = 40y + 16               Subtract 16 from both sides

x - 16 = 40y                Interchange the left and right sides

40y = x - 16                Divide by 40

y = (x - 16)/40

f-1(x) = (x - 16)/40

The set of all linear combinations of the given set of vectors forms a line, a plane, or all of ℝ³.

To determine whether the set of all linear combinations of a given set of vectors in ℝ³ forms a line, a plane, or all of ℝ³, we need to examine the span of the vectors.

Let's denote the set of vectors as S = {v₁, v₂, v₃}.

If the span of S is a line, it means that all linear combinations of the vectors lie on a single line in ℝ³. Mathematically, this implies that the vectors v₁, v₂, and v₃ are linearly dependent, and we can express one of them as a linear combination of the other two.

If the span of S is a plane, it means that all linear combinations of the vectors lie on a two-dimensional plane in ℝ³. In this case, the vectors v₁, v₂, and v₃ are linearly independent.

If the span of S is all of ℝ³, it means that any vector in ℝ³ can be expressed as a linear combination of v₁, v₂, and v₃. In other words, the vectors span the entire three-dimensional space.

To determine which case applies, we need to check the linear dependence or independence of the vectors v₁, v₂, and v₃. If they are linearly dependent, the span will be a line; if they are linearly independent, the span will be a plane; and if they span all of ℝ³, the span will be all of ℝ³.

So, let's examine the linear dependence or independence of the vectors.

If we have a set of vectors {v₁, v₂, v₃} in ℝ³, we can create a matrix A with these vectors as columns:

A = [v₁ v₂ v₃]

We can then perform Gaussian elimination or use other techniques to determine the linear dependence or independence of the columns of A. If any of the columns can be expressed as a linear combination of the others, the vectors are linearly dependent; otherwise, they are linearly independent.

If the vectors are linearly dependent, the span will be a line. If they are linearly independent, we proceed to check if they span all of ℝ³. To do this, we check if the matrix A is full rank, i.e., if its columns are linearly independent. If the matrix A is full rank, the span will be all of ℝ³; otherwise, the span will be a plane.

So, by performing the necessary calculations, you can determine whether the set of all linear combinations of the given set of vectors forms a line, a plane, or all of ℝ³.

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Answer:

12

Step-by-step explanation:

204÷17=12

Answer:

128

Step-by-step explanation:

two twenty dollars which is 40,five dollars 5,three one dollars which is 3,two twenty five cents which is 25+25=50,three ten cents which is 3×10=30

40 +5+3+50+30

=128

To simplify the expression (3 / (1 - cos x)) - (3 / (1 + cos x)) using the fundamental identities, we can combine the fractions and apply trigonometric identities to simplify further.

Combine the fractions: To combine the fractions, find a common denominator. In this case, the common denominator is (1 - cos x)(1 + cos x).

Apply the fundamental identity: Use the trigonometric identity (a - b)(a + b) = a^2 - b^2 to simplify the denominator. The expression becomes:

(3(1 + cos x) - 3(1 - cos x)) / ((1 - cos x)(1 + cos x))

Simplify the numerator: Distribute and simplify the numerator to obtain:

(3 + 3cos x - 3 - 3cos x) / ((1 - cos x)(1 + cos x))

Cancel out like terms: Simplify further by canceling out like terms in the numerator:

0 / ((1 - cos x)(1 + cos x))

Simplified result: The simplified expression is 0. Since the numerator is 0, the entire expression evaluates to 0.

Therefore, the simplified form of the given expression is 0.

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Answer: 39

Step-by-step explanation:

10+17+20+13=60

180/60=3

3*13=39

If the average waiting time in the line is 18 minutes, it is not possible to determine the number of customers at the carwash without additional information such as the service rate or arrival rate.

The number of customers at the carwash depends on various factors such as the service rate, arrival rate, and the distribution of service times. Without knowing these factors, it is not possible to accurately determine the number of customers at the carwash.

However, we can make some general observations. If the service rate is high, it is likely that the waiting time will be lower, and hence, the number of customers at the carwash will be lower. On the other hand, if the service rate is low, the waiting time will be higher, and hence, the number of customers at the carwash will be higher.

Similarly, if the arrival rate is high, the number of customers at the carwash will be higher, and if the arrival rate is low, the number of customers will be lower. Therefore, to determine the number of customers at the carwash, we need to know both the arrival rate and the service rate.

In conclusion, knowing only the average waiting time in the line is not sufficient to determine the number of customers at the carwash. Additional information such as the arrival rate and service rate is required to make an accurate estimation.

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The opposite of smth on a number line.

Answer:

Absolute value is the distance of a number from zero

Step-by-step explanation:

for example 5 is 5 from zero -1000 is 1000 from zero absolute value will always be positive

Answer:

The equation of the line with a slope of 3 that passes through (-4,-7) is;

Explanation:

We want find the equation of the line with;

Using the point slope form of linear equation;

substituting the given values into the equation above we have;

Above is a point slope form of the equation.

solving further we have;

The equation of the line with a slope of 3 that passes through (-4,-7) is;

Based on the fact that Jessica and her best friend split the money and were able to get $16.32, the total amount that they found was $32.64

The fact that they split the money evenly means that they split it in half which each person getting the same amount.

This means that the total amount they found was twice the amount that Jessica and her best friend got.

The total amount found is therefore:

= Jessica's share + Best friend's share

= 16.32 + 16.32

= $32.64

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Answer: \(\dfrac{121}{10}\ \text{Pounds}\)

Step-by-step explanation:

Given

The weight of John's backpack is

\(5\ \dfrac{1}{2}=\dfrac{5\times 2+1}{2}=\dfrac{11}{2}\ \text{Pounds}\)

Weight of Tyrone's backpack is

\(6\ \dfrac{3}{5}=\dfrac{6\times 5+3}{5}=\dfrac{33}{5}\ \text{Pounds}\)

Combined Weight of two

\(\Rightarrow \dfrac{11}{2}+\dfrac{33}{5}=\dfrac{11\times5+33\times 2}{10}\\\Rightarrow \dfrac{121}{10}\ or\ 12\ \dfrac{1}{10}\ \text{Pounds}\)

the total weight of the boy's backpack is 121/10

the first step is to convert the fraction from mixed fraction to proper fraction

5 1/2

= 11/2

6 3/5

= 33/5

the total weight of the boys can be calculated as follows

= 11/2 + 33/5

= 55 + 66/10

= 121/10

Hence the total weight of the boy's backpack is 121/10

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Explicación paso a paso:

Dado

an = n + 3

bn = 5n-1

a) an-bn = n + 3- (5n-1)

= n + 3-5n + 1

= n-5n + 3 + 1

= -4n + 4

an-bn = 4-4n

b) an + 3bn = (n + 3) +3 (5n-1)

= n + 3 + 3 (5n) +3 (-1)

= n + 3 + 15n-3

= n + 15n + 3-3

= 16n + 0

= 16n

an + 3bn = 16n

3) Dado a1 = 1, a2 = 1

an = an-1 + an-2

Debemos escribir los primeros ocho términos de la secuencia.

a3 = a3-1 + a3-2

a3 = a2 + a1

a3 = 1 + 1

a3 = 2

a4 = a3 + a2

a4 = 2 + 1

a4 = 3

a5 = a4 + a3

a5 = 3 + 2

a5 = 5

a6 = a5 + a4

a6 = 5 + 3

a6 = 8

a7 = a6-a5

a7 = 8 + 5

a7 = 13

a8 = a7 + a6

a8 = 13 + 8

a8 = 21

Por tanto, los primeros ocho términos de la secuencia son 1, 1, 2, 3, 5, 8, 13 y 21

Step-by-step explanation:

100% = $1100

1% = 100%/100 = 1100/100 = 11

how many % are $600 ?

that is how often does 1% fit into $600 ?

600 / 11 = 54.545454... %

rounded that means 55%.

so, the making down percentage is then the difference

100% - 55% = 45%

Answer:

I think it's 68 degrees sorry if im not right

The measures of central angle x if Line segment PQ is a diameter of circle A is 68°, so option B is correct.

The diameter of a circle, measured from edge to other, includes its entire length from center to center. This length right here is the entire thing. The letter "d" stands for a circle's diameter.

Given:

The angle = 112°,

As we can see that the sum of the given angle and x angle is a sum of linear pair angle, and it is equal to 180°.

So,

x + 112 = 180

x = 180 - 112

x = 68°

Therefore, the measure of central angle x if Line segment PQ is a diameter of circle A is 68°.

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Answer:

8(n/4)

Step-by-step explanation:

the answer is A) 12 cm (rounded to the nearest whole number).

The circumference of a circle can be found using the formula C = 2πr, where C is the circumference, r is the radius, and π is the mathematical constant pi (approximately equal to 3.14).

In this case, if the radius of the circle is 6 cm, we can substitute this value into the formula to find the circumference: C = 2π(6 cm) = 12π cm.

This means that the circumference of the circle is 12 times the value of pi, or approximately 37.68 cm (rounded to two decimal places).

Therefore, the answer is A) 12 cm (rounded to the nearest whole number).

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