Pls help me this and explain for me pls

Answer:

21 students earn the reward

Step-by-step explanation:

15% is equivalent to the fraction 3/20 so, you must divide 140 by 20 then multiply by 3 to get the final answer of 21 students.

15% = 3/20
140 divided by 20 = 70
70 x 3 = 210
210 divided by 10 = 21

In conclusion, your answer would be that 21 students get the Presidential Physical Fitness Award.


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Answer:

21 students earn the reward

Step-by-step explanation:

15% is equivalent to the fraction 3/20 so, you must divide 140 by 20 then multiply by 3 to get the final answer of 21 students.

15% = 3/20

140 divided by 20 = 70

70 x 3 = 210

210 divided by 10 = 21


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Step-by-step explanation:

Answer:

Z+12a−z+8+12−+8

Step-by-step explanation:

Z+8−6(z−2a)+5z

+8−6(−2)+5

Z+8−6(−2a+z)+5z

+8−6(−2+)+5

Z+8−6(−2a+z)+5z

+8−6(−2+)+5

Z+8+12a−z+8+12−

Answer:

Z + 8 + 12a − z

12a + 8

Step-by-step explanation:

Answer:

-8xy^5-6xy^4

Step-by-step explanation:

-10xy^5+(2x^3)(y^2)-(6x^2)(y^2)

-10xy^5+2xy^5 -6xy^4

-8xy^5-6xy^4

This should be good but if your teacher requires it just put 0 with the exponent in descending order

Answer:

Answering on an Alt account to give brainliest :p

Step-by-step explanation:

a. Length of segment PM=21cm and length of segment PL = 24.6cm.

In geometry, a segment is a part of a line that is bounded by two distinct endpoints and contains all the points between them. It can also be defined as the portion of a line that connects two points.

(a) Using the given information, PQ=42cm and we can see that M is midpoint of PQ. Therefore we can use midpoint formula

PQ=PM+MQ

42=2PM

PM=42/2

PM=21

(b) We used the property that the perpendicular bisector of a chord passes through the center of the circle, which means that LP is the perpendicular bisector of PQ.

(c) We used the Pythagorean theorem again to solve for PL.

\(PL^2 = PM^2 + LM^2\\\\PL^2 = 21^2 + 13^2\\\\PL^2 = 610\\\\PL = \sqrt{(610)\)

PL ≈ 24.6 cm

(d)

\(PM^2=PL^2-LM^2= 610-169=441\\\\PM=21\)

Using the fact that LP is the perpendicular bisector of PQ, we can split PQ in half to get two segments of length 21. Then, using the Pythagorean theorem in right triangle LPL', where L' is the midpoint of PQ, we can solve for PL.

PL ≈ 24.6 cm

Therefore, the length of PL is approximately 24.6 cm.

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Answer:

The answer is 75/50

Step-by-step explanation:

Answer:

75/W = 150/100

75/W = 3/2

W x 75/W = W x 3/2

75 = 3W/2

2 x 75 = 2 x 3W/2

150 = 3W

so the answer should be 50 = W

Answer:

-166.6666667

Step-by-step explanation:

the full step u r welcome

Answer:

  (a)  four and eighty three hundredths with the three repeating

Step-by-step explanation:

The mixed number 4 5/6 will have a repeating decimal fraction, so finite-length decimals will not express it exactly.

  4 5/6 = 4 +5/6 = (4×6)/6 +5/6 = (24+5)/6 = 29/6 . . . . . not 6/29

As you can see from the long division (attached), the decimal fraction will have repeating 3s.

  \(4\dfrac{5}{6}=4.833... =\boxed{4\dfrac{83.\overline{3}}{100}}\)

The exact value of four and five sixths is represented as "six twenty ninths." So, the correct answer is 2.

The value "four and five sixths" is a mixed number. It consists of a whole number part (4) and a fractional part (5/6).

To represent this value exactly, you need to find a fractional form where the numerator (top part) is 5 and the denominator (bottom part) is 6, which is 5/6.

In fractional form, it's represented as 5/6. However, you can also express it as a decimal, which is approximately 0.8333 when rounded to four decimal places.

So, "four and five sixths" can be expressed as:

- Fraction: 5/6

- Decimal (approximate): 0.8333

The other options provided:

- "Four and eighty-three hundredths with the three repeating" does not accurately represent "four and five sixths."

- "4.8" represents "four and eight-tenths," which is different from "four and five sixths."

- "484%" represents 484 percent, which is not the same as "four and five sixths."

Therefore, "six twenty ninths" or 5/6 is the correct representation for "four and five sixths" in fractional form.

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Answer:

I believe the answer is 20.35 x \(10^{4}\).

Step-by-step explanation:

The result of multiplying 40 by the distance to the finish line is equal to the total distance covered.

To calculate the product of 40 and the distance to the finish line,

1. Determine the distance to the finish line. This could be measured in any unit of length, such as meters or feet.

2. Take the value of the distance to the finish line and multiply it by 40. This can be done by simply multiplying the two numbers together.

  Result = Distance to finish line * 40

3. Perform the multiplication to find the product. The result will be the total distance covered from the starting point to the finish line.

For example, if the distance to the finish line is 100 meters:

  Result = 100 * 40

         = 4000 meters

  Therefore, the product of 40 and the distance to the finish line is 4000 meters.

Remember to adjust the units of the result based on the units used for the distance to the finish line.

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Answer: 4

Step-by-step explanation: Divide 28 by 7

Answer:

6/32 or 3/16 chance

Step-by-step explanation:

Adding all of the marbles up we get our total, 32.

We have 6 blue marbles so 6/32 or 3/16 chance of picking a blue marble.

Answer:

6/32 or u can simplify it to 3/16

Plzzzzz give me Brainliest!!!!!  

The equation that can be paired with x + 2y = 5 to create an inconsistent system is given by:

2x + 4y = 3.

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

An inconsistent system is a system that has no solutions, and it happens when the coefficients of x and y are multiples, and the independent terms are not.

Hence:

x + 2y = 5.

2x + 4y = 3.

Is inconsistent, as the variables are each multiplied by 2, but the independent term is not.

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Answer:

A

Step-by-step explanation:

Edge.

For given function g(x) = x^4 - 2x^3 - 3x the value of x such that g'(x) = 12 is x = 2.24

In this question, we have been given a function g(x) = x^4 - 2x^3 - 3x

We need to find the value of x such that g'(x) = 12

First we find the derivative of given function g(x) with respect to x

g'(x) = 4x³ - 6x² - 3

When g'(x) = 12

4x³ - 6x² - 3 = 12

4x³ - 6x² - 3 + 3 = 12 + 3

4x³ - 6x² - 15 = 0

After solving given polynomial we get,

x = 2.24

Therefore,  the value of x is 2.24

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The required area of the composite figure is given as 625.3 square feet.

GIven that,
A composite figure is given, as a rectangular slab with a square pyramid placed over it, the surface area of the figure is to be determined.

Surface area is defined as the area of the surface that is uncovered.

Here,
The area of the composite figure is given as,
Area = 4[5×5/3] + 2[12×4] + 2[5×4] + 12×5 + 7×5
Area = 100/3 + 96 + 401 + 60 + 35
Area = 33.3 + 592
Area = 625.3 square feet.

Thus, the required area of the composite figure is given as 625.3 square feet.

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The value of 6x is 102.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

x=51/3

For 6x put x= 51/3 we get

6x = 6 x 51/3

6x = 2 x 51

6x = 102

Or, \(x^6\) = \((51/3)^6\)

\(x^6\) = 17,596,287,801 / 531,441

Hence, the value of 6x = 102.

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This restricted portion of the fundamental niche that Chthamalus can effectively utilize in the presence of competition is referred to as its realized niche.

The weaker competitor is forced to retreat to a more restricted niche (its realized niche) than it would inhabit in the absence of the competition when interspecific interactions result in competitive exclusion.

For Chthamalus, a typical intertidal barnacle animal categories, its key specialty alludes to the full scope of ecological circumstances and assets it is hypothetically fit for taking advantage of without rivalry. Chthamalus would occupy its entire fundamental niche in the absence of competition.

However, Chthamalus is outcompeted and forced to withdraw from a portion of its fundamental niche when competing with a stronger competitor, such as Balanus, the dominant barnacle species. This limited part of the essential specialty that Chthamalus can actually use within the sight of contest is alluded to as its acknowledged specialty.

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Based on the information, the height of point A is 6 feet above ground and the length of OB is approximately 88 feet.

b) At t = 0.25 seconds, the approximate coordinates of the ball are (11, 13.5).

At t = 0.5 seconds, the approximate coordinates of the ball are (22, 12).

At t = 0.75 seconds, the approximate coordinates of the ball are (33, 9).

At t = 1 second, the approximate coordinates of the ball are (44, 6).

At t = 1.25 seconds, the approximate coordinates of the ball are (55, 3).

At t = 1.5 seconds, the approximate coordinates of the ball are (66, 0).

At t = 1.75 seconds, the approximate coordinates of the ball are (77, -3).

At t = 2 seconds, the approximate coordinates of the ball are (88, -6).

The height of the ball will be negative when it reaches point B again after traveling from A to B, assuming it follows the same path.

The time it takes for the ball to reach its maximum height and return to the ground will be approximately 2 seconds.

When the ball has coordinates (88, 0), it has reached the ground at point B, and its horizontal distance traveled is 88 feet.

At t = 0, the ball is at point A, which is 6 feet above the ground. This is because it was thrown from that height, and the time elapsed is not enough for gravity to affect its height yet.

Yes, the graph allows us to make predictions about the height of the ball at all points. However, the accuracy of the predictions may depend on the assumptions and approximations made about the ball's initial velocity, air resistance, and other factors.

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The lowest score on the exam cannot be determined from the given grouped frequency distribution table thus the correct answer is c. Cannot be determined.

In the given grouped frequency distribution table, the scores are divided into intervals or classes, such as 50-59, 60-69, 70-79, and so on. The frequency column tells us how many scores fall within each interval. For example, there are 4 scores that fall within the 50-59 interval, and 3 scores that fall within the 90-99 interval.

However, we do not know the exact scores that make up each interval. For example, the 70-79 interval could contain scores ranging from 70 to 79, or it could contain scores like 71, 75, and 78, or any other combination of scores that falls within that range. Without knowing the individual scores, we cannot determine the lowest score on the exam.

Therefore, the correct answer is option c, “Cannot be determined.”

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Answer:

2 aliens are green.

Step-by-step explanation:

0.05 * 40 = 2

Answer:

50

Step-by-step explanation:

Answer:

£45.84375

Step-by-step explanation:

To top up the tank he needs:

1200 - 450 = 750 liters

Since the price of oil is 81.5p per liter and he gets a 7.5% discount, the discount per liter is:

81.5 x 7.5/100 = 6.1125p

Since he needs 750 liters, the discount in total is:

6.1125 x 750 = 4584.375p

Since 1p = £0.01

The discount he gets in £ is:

4584.375 x 0.01 = £45.84375

Step-by-step explanation:

w - 7/10 = 13/8

w = 13/8 + 7/10

w = 65/40 + 28/40

w = (65+28/40

w = 93/40

Answer:

−2⋅(10z  2 −49z+56)

Step-by-step explanation:

\( \: \)

A/an database schema diagram can be used to show how the tables in a database are defined and related.

This type of diagram provides a visual representation of the structure and organization of the database. It illustrates the tables ,and  their attributes, and the relationships between them.

The database schema diagram helps in the  understanding the logical design of the database, including primary keys, for  foreign keys, and the connections between different tables. It allows developers, database administrators, and stakeholders to visualize the database structure and serves it as a reference for in  designing, modifying, and querying the database effectively.

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The given information can be expressed as follows: The probability that the first coin comes up head = p1. The probability that the second coin comes up head = 0.4.Now, we can find the probability of not getting heads in any of the tosses as follows: Prob. of not getting heads in the first toss = (1-p1)(0.6)Prob. of not getting heads in the second toss = (0.4)(0.4)The probability of not getting heads in any of the tosses = (1-p1)(0.6)(0.4)(0.4)The probability of getting at least one head in any of the tosses = 1 - (1-p1)(0.6)(0.4)(0.4)Therefore, the expected value of the number of tosses until we get at least one head is the reciprocal of this probability, which is given as follows: Expected value = [1/{1 - (1-p1)(0.6)(0.4)(0.4)}].

Using the formula for variance, we can now calculate the variance as follows: Variance = [1 - {1/{1 - (1-p1)(0.6)(0.4)(0.4)}}] / {[1/{1 - (1-p1)(0.6)(0.4)(0.4)}}]²= 1 / {[1 - (1-p1)(0.6)(0.4)(0.4)]} - 1= 1 / {1 - 0.24p1} - 1= {1 - 1 + 0.24p1} / {1 - 0.24p1}= 0.24p1 / {1 - 0.24p1}Hence, the variance of the number of tosses is 0.24p1 / {1 - 0.24p1}.

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Answer:

3.625 would be the correct answer.

Step-by-step explanation:

The ratio of corresponding sides for the given similar triangles is 2/5.

In the given options, the ratio of corresponding sides is provided for each set of similar triangles. Let's analyze each option to determine the correct ratio:

a. 10

This option only provides a single number and does not specify the ratio of corresponding sides. Therefore, it is not the correct answer.

b. 4/5

This option provides the ratio 4/5 for the corresponding sides of the similar triangles. However, the ratio can be simplified further.

To simplify the ratio, we divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 4 and 5 is 1.

Dividing 4 and 5 by 1, we get:

4 ÷ 1 = 4

5 ÷ 1 = 5

Therefore, the simplified ratio is 4/5.

c. 10/85

This option provides the ratio 10/85 for the corresponding sides of the similar triangles. However, this ratio cannot be simplified further, as 10 and 85 do not have a common factor other than 1.

Therefore, the correct ratio of corresponding sides for the given similar triangles is 2/5, as determined in option b.

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The zero's of the polynomial 4x² - 4x - 8 are as follows:

x = 2 or x = -1

Zeros of a polynomial can be defined as the points where the polynomial becomes zero as a whole. In other words, the zeros of a polynomial p(x) are all the x-values that make the polynomial equal to zero.

Therefore, let's find the zero's of the polynomial.

4x² - 4x - 8 = 0

divide through by 4

x² - x - 2 = 0

x² + x - 2x - 2 = 0

x(x + 1) -2(x + 1) = 0

(x - 2)(x + 1) = 0

Therefore,

x = 2 or x = -1

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The zeros of polynomial 4x² - 4x - 8, are 2 and -1. The relationship between the zeros and coefficients are 1 and -2.

Let the given polynomial be p(x) = 4x² - 4x - 8

To find zeros, take p(x) = 0

Factorizing the equation,

4x² - 4x - 8 = 0

4(x² - x - 4) = 0

x² - 2x + x- 2 = 0

x(x-2) + 1(x-2) = 0

(x-2) (x+1) = 0

∴ x=2 and x=-1

The roots of 4x² - 4x- 8 are 2 and -1

Relationship between the sum of zeros and coefficients:

-Coefficient of x/ coefficient of x²

(-1) + 2 = -(-4)/4 = 1

Relation between the product of zeros and coefficients:

Constant/ coefficient of x²

(-1) × 2 = -8/4 = -2

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