(9- 1x +2x) - (2x square - 3x +5) ​

The percentage of failures, if the minimum for a pass is 35 marks, is given as follows:

80%.

A percentage is obtained applying a proportion, as the percentage is given by the division of the number of desired outcomes by the number of total outcomes, and then multiplied by 100%.

The total number of students is given as follows:

42 + 38 + 120 + 84 + 48 + 36 + 32 = 400.

The minimum grade for a pass is of 35 marks, hence, considering all the measures in the 31-40 range as passing, the number of students that passed is given as follows:

120 + 84 + 48 + 36 + 32 = 320.

Hence the percentage of students that passed is given as follows:

P = 320/400 x 100% = 0.8 x 100% = 80%.

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Answer:

She bought it at Rs.6140

Here we have an arithmetic sequence where we just need to add 5 to each term to get the next one.

The actual pattern seems to be:

-4, 1, 6, 11, 16

This seems to be an arithmetic sequence, to check that, just take any pair of consecutive terms and take the difference between them.

For the first two:

1 - (-4) = 5

For the second two:

6 - 1 = 5

For the third two:

11 - 6 = 5

And so on.

So we just add 5 to the previous term to get the next one, that is the pattern.

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The length of the metal bar if The sides of the cuboid are 2 m, 3 m, and 4 m, is 5.4 meters approximately so, option C is correct.

A shape created by stacking numerous congruent rectangles on top of one another. The resultant shape is known as a cuboid. Take a look at the following cuboid to see how it displays its three dimensions: length, width, and height.

Given:

The sides of the cuboid are 2 m, 3 m, and 4 m,

Calculate the length of the metal bar as shown below,

The length of the metal = √(2² + 3² + 4²)

The length of the metal = √(4 + 9 + 16)

The length of the metal = √29

The length of the metal = 5.38 meter

Thus, the length of the metal bar is 5.4 meters.

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Answer:

9

Step-by-step explanation:

(2² x ² / xy²) ²

x=3 y=2

9

I don't know is it correct or not

Answer:

There are infinite answer for this.  Here are a few.

6/3, 10/5, 0.5, 100/50, 25/50, -10/-5

Step-by-step explanation:

8³/30 is the expression in simplified form of 2/135*6 - 3√15*6.

The simplest form of a fraction is one with a relatively prime numerator and denominator. It indicates that, other than 1, there is no common factor between the fraction's numerator (upper part or top) and denominator (lower part or bottom).

The reduced form of a fraction is another name for its simplest form. For instance, the simplest form of a fraction with a common factor of 1 is 3/4 However, because 2/4 can be further condensed and written as 1/2, it is not the simplest form. In this case, we can also state that 1/2 and 2/4 are equivalent fractions.

Given to find the expression in simplified form

2/135 *6 - 3√15 *6

6(2/135-3√15)

6(2/3√15-3√15)

6(2/3√15×3√15 - 3√15/ 3√15)

6(2×3√15/135- 3√15/1)

6(2×3√15/3√15- 3√15/1)

6(2- 3√15)

8³/30

Thus, 8³/30 is the expression in simplified form of 2/135*6 - 3√15*6.

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Answer:

y = 2x + 1

explanation:

y = mx + b

y = 2x + b

y = 2x + b

7 = 2*3 + b [Plugged in 3 for x and 7 for y]

7 = 6 + b

1 = b

Answer: (3,7)Every point on a horizontal line has the same y-value. Use the y-value of the point to find the equation of the horizontal line.

y=7

Step-by-step explanation:

Answer:

Step-by-step explanation:

a) To prove that PQ || AB, we can use the fact that in any parallelogram, the opposite sides are parallel and equal. Therefore, since AD is parallel to AB, the line PQ which connects the midpoint of AD to the opposite corner A will also be parallel to AB.

b) To prove that PO = 1/2 CD, we can use the fact that in any parallelogram, the diagonals bisect each other. Therefore, since AC and BD intersect at O, PO must be equal to 1/2 of its length. Since the length of CD is twice that of PO, it follows that PO = 1/2 CD.

The area of the shaded region ECODF is given by  8√2 - 4 - π units and rounding it to the nearest tenth we get, 4.2 units.

From the given diagram we can deduce that -

Area(ECODF) = Area(ABFE) − Area(OAC) − Area(OBD) − Area(CAE)− Area(DBF)

OA = OB = 2√2

⟹AB = EF = 4√2

AE = BF = 2

Area(ABFE) =2 × 4√2 = 8√2

Now, AC = BD =2

OC = OD = [tex]\sqrt{(2\sqrt{2})^{2} - 2^{2}}[/tex]

=√(8−4)

= √4

= 2

Area(OAC) = Area(OBD) = 12 × 2 × 2 = 2

Triangles  OAC  and  OBD  are isosceles right triangles:

∠OAC = ∠OBD = 45°  

Sectors  CAO  and  DBF  have central angles:

∠CAE = ∠DBF = 90°  − 45° = 45°

Area(CAE) = Area(DBF) = 45/360 × π(2^2) = π/2

hence, the area of region ECODF is given by -

Area(ECODF) = 8√2 - 2(2) - 2(π/2)

Area(ECODF) = 8√2 - 4 - π

and rounding it to the nearest tenth we get, 4.2 units.

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The complete question is -

Circles centered at $A$ and $B$ each have radius 2. Point $O$ is the midpoint of $\overline{AB}$, and $OA = 2\sqrt2$. Segments $OC$ and $OD$ are tangent to the circles centered at $A$ and $B$, respectively, and $\overline{EF}$ is a common tangent. What is the area of the shaded region $ECODF$? Round your answer to the nearest tenth.

The function with which the projectile is moving is P(t) = 5t - t², where P(t) represent the height and t represent the time.

For t > 5 the value of P(t) will be negative , but distance travelled can not be negative.

an expression, rule, or law in mathematics that establishes the relationship between an independent variable and a dependent variable (the dependent variable). Functions can be found everywhere in mathematics, and they are essential for building physical connections in the sciences. The modern definition of function was first proposed in 1837 by the German mathematician Peter Dirichlet:

A variable y is said to be a function of the independent variable x if there is a correlation between them such that a rule determines a particular value of y whenever a numerical value is assigned to x.

The function is P(t) = 5t - t²

here for t > 5 the value of P(t) will be negetive , but distance travelled can not be negetive.

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Complete question--

Answer:

b. 1/12

Step-by-step explanation:

There are 3 choices for the type of bread and 4 choices for the type of filling, for a total of 3*4=12 possible sandwiches. If you are only interested in sandwiches made with tuna filling, then there are 3 choices for the type of bread (rye, wheat, or white) that the sandwich can be made with. Therefore, the probability of getting a tuna sandwich on any type of bread is 3/12=1/4. The probability of getting a tuna sandwich on wheat bread specifically is 1/4, so the answer is b. 1/12.

Answer:

Step-by-step explanation:

15

Answer: The answer is 30

Step-by-step explanation: Just do 2 times 3. 10 times

Answer:

130

Step-by-step explanation:

add 140 and 90

subtract 230 from 360

1. If Julia drives 10 km due west of her home. the total distance that she has travelled from his house is 18.02 km.

2.  The length of the side opposite the 250 angle to the nearest is-60.41.

1. Total Distance

Pythagorean theorem

D²= a² + b²

D² = 10² + 15²

D²= 100+225

D = √325

D = 18.02 km

2. Length

tan(250) = side opp/side adj

Side opp = 15×tan(250)

Side opp = 15× (-4.02728264508)

Side opp = -60.41

Therefore the distance  is 18.02 km and the length is -60.41.

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The function g(x) can be expressed as g(x) = a(x - h) + k, where a is the coefficient of x (which is 1 for f(x) = x^2), h is the horizontal shift, and k is the vertical shift.

To translate a function 6 units left, we need to shift it horizontally by -6 units. So, h = -6.

Since the function g(x) is a translation of f(x), a and k will have the same values as in f(x). In this case, a = 1 and k = 0.

Therefore, the function g(x) that represents the translation 6 units left of f(x) is:

g(x) = a(x - h) + k

= 1(x - (-6)) + 0

= 1(x + 6) + 0

= x + 6

the answer is: g(x) = x + 6

By taking a quotient, we will see that each one of the 140 people got  GH¢0.67

We know that some people wants to divide equally the amount of GH¢40.00 between a total of 140 people, then we only need to take the quotient:

GH¢40.00/140

Assuming you can't use a calculator, the division is as follows:

40/140   (i removed the units so it is easier to read)

We can simplify the fraction as:

40/140 = 4/14

4/14 = 2/7

Now we could say that each person got GH¢ 2/7

Or write that fraction as 2/7 = 0.67

Each person got GH¢0.67

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The higher R-squared value of the multiple regression model with the higher order independent variable implies that the linear model is not the best fit and that a more complex model is needed to better explain the data

1. Multiple regression models involve fitting a model that includes one or more independent variables to predict a dependent variable.

2.A value of X to a higher power, such as X squared, for an independent variable in a multiple regression model indicates that the relationship between the independent and dependent variables is not linear.

3. If this model produces a higher value of R-squared than a linear model, it means that it is a better fit for the data.

4. However, it does not necessarily imply that the linear model's residual plot is not randomly distributed around the zero line.

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Answer:

1/2

Step-by-step explanation:

Perpendicular slopes must be opposite reciprocals of each other (their product should equal -1), so first find the slope of the line in the graph.

Slope = rise / run = -2 / 1 = -2

If the slope of the perpendicular line is m, we know -2m=-1. Dividing both sides by -2, we get m = 0.5 = 1/2

The statistical measurement used by the stores to order the shoes to determine the appropriate sizes is mode.

It is referred to as the mode value and is defined as the data's highest frequency as well as how frequently the element appears in the data set. The value that appears most frequently in a given set is the mode. Additionally, we can refer to the value or number in a data collection that occurs more frequently as the mode or modal value.

When a department store is ordering line of shoes, the store needs to collect the data and analyze the representation and organization.

Hence, mode is the correct answer.

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A function's inverse will result in the input and output being in opposite directions. Set the function equal to y in order to use algebra to discover the inverse of the function. After that, switch x and y and find y in terms of x.

Inverse operations are those that are the exact opposite of one another. For instance, division is related to the operation of multiplication, and subtraction is the related to operation of addition.

Therefore, in mathematics, an inverse operation is an operation that reverses the effects of a preceding operation The term "inverse operations" refers to a collection of two opposing operations. As an illustration: The result of adding 5 and 2 pens is 7 pens. Now

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f (x) = 3x - 2

g(x) = 4x + 4

fg (4) = ?

fg (x) = f (4x + 4)

          3( 4x+4) - 2

           12x + 12-2

  fg (x)  =  12x+10

fg(4) =( 12 × 4) + 10

fg(4) = 48 + 10 = 58

B. If two cones have their heights in the ratio 1:3 and radii 3:1, then the ratio of their volumes is 3:1.

This can be determined by using the formula for the volume of a cone, V = (1/3)πr^2h, where r is the radius and h is the height. Since the ratio of the height is 1:3 and the ratio of the radii is 3:1, the ratio of the volumes is 3:1.

To calculate this, we can set up two equations:

V1 = (1/3)πr1^2h1 and

V2 = (1/3)πr2^2h2.

Since the ratio of the height is 1:3, we can set h1=3h2. Substituting this into the equation for V2 and solving for V2/V1, we get

V2/V1 = (r2/r1)^2*(h2/h1).

Since the ratio of the radii is 3:1, we can set r2/r1=3. Substituting this into the equation and simplifying, we get V2/V1 = 3^2*(h2/h1), which is equal to 3^2*1/3=3, which is the same as the ratio of the radii, 3:1. Therefore, the ratio of the volumes is 3:1.

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Answer:

Step-by-step explanation:

a) correct

b) incorrect, its actually approximately 94cm^3

c) correct

d) correct

e) incorrect, its actually around 188cm^3

i tried, i hope this works :)

The real life need to stack ¼ cups in a minute would not be met in the given time after being calculated.

The equivalent of one mini is 60 seconds. The given expressions would be calculated in seconds to find the portion of minutes in each phase.

The actual desire is to Stack 1/4 = 60 seconds

The first attempt = 1/4 for 1/2 ×60 seconds = 30 seconds

The second attempt = 1/4 for 3/10 × 60 secs = 18 secs less than first attempt which is= 30 -18 = 12 secs

Since in both cases 30 and 18 seconds are not up to 1 minute, you weren't able to reach your goal.

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Answer:

4/12, 1/3, 10/30

Step-by-step explanation:

Jan has 12 ounces milkshakes. Four ounces in the milkshake are vanilla and the rest is chocolate. What are 2 equivalent fractions that represent the fraction of the milkshake that is vanilla?

Total in 1 milkshake: 12 oz

Vanilla: 4 oz

Chocolate: 8 oz (12 oz - 4 oz = 8 oz)

The vanilla fraction is

4/12

Reduce 4/12 by dividing the numerator and denominator by 4:

1/3

Multiply the numerator and denominator by 10:

10/30

Here are 3 equivalent fractions of the fraction of vanilla:

4/12, 1/3, 10/30

The solution of the function 3f(1) - 4g(-2)  is -19.

The functions can be solved as follows;

f(x) = 7x - 4

g(x) = 11 - x²

Therefore, let's solve the composite function as follows:

A composite function is generally a function that is written inside another function.

Hence,

3f(1) - 4g(-2) = ?

f(1) = 7(1) - 4 = 7 - 4 = 3

g(-2) = 11 - (-2)² = 11 - 4 = 7

Therefore,

3f(1) - 4g(-2) = 3(3) - 4(7) = 9 - 28 = -19

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It is estimated that there is a 0.039 percent chance that a battery may be deemed defective by the quality control team.

Generally, Probability is the area of mathematics that deals with providing numerical descriptions of the likelihood that an event will take place or the likelihood that a statement will be correct.

A number between 0 and 1 may be thought of as representing the chance of an event happening, with 0 indicating that the occurrence is impossible and 1 indicating that it will definitely happen.

Let's call the probability that a battery is faulty "F" and the probability that it is declared faulty by the quality control team "D." We can then use the following formula to find the probability that a battery is declared faulty:

P(D|F) * P(F) + P(D|not F) * P(not F)

Substituting in the given values, we get:

(0.97 * 0.02) + (0.02 * 0.98) = 0.039

So, the probability that a battery is declared faulty by the quality control team is approximately 0.039

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Answer:%80

Step-by-step explanation: take 83 x 4 (4 being the total number of test) and you get 332, then take the 332 and subtract the current test score (78,88,86). Finally you have your answer, %80

Answer:

He must have a score of 80 or higher.

Step-by-step explanation:

[tex]\frac{86+88+78+x}{4}[/tex] [tex]\geq[/tex] 83

[tex]\frac{252 +x}{4}[/tex] ≥ 83  Multiply both sides by 4

252 + x [tex]\geq[/tex] 332  Subtract 252 from both sides

x [tex]\geq[/tex] 80