Write an expression for the following situation: 4 less than 20 times some number.

A. 20-x-4
B. 20 + x - 4
C. 20x - 4
D. 20 - x + 4

The sum of the reciprocal of the two numbers is 44.

Let a and b be the two number

It is given that the sum of the number is equal to 44 times their product.

So from this, we get an equation:

a + b = 44 ab -------(1)

Now we have to find the sum of the reciprocal of the two numbers.

1/a + 1/b = b + a/ ab

            = a + b / ab -------(2)

As from equation (1) we have

a + b/ ab = 44

Now put this value in equation (2) we get

1/a + 1/ b = 44

Therefore the sum of the reciprocal of the two numbers is 44.

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Answer:

The least coomon denominator is 12, so

9/12 and 10/12

The degree measure of each angle in the triangle is

∠H = 59°

∠F = 39°

Angle sum property of triangle says that sum of all the triangle is always equal to 180°

∠G is given to us as 90°

So by applying the property we an say that

90 + (3x - 14) + (5x - 16) = 180

8x = 180 - 90 + 14 + 16

8x = 120

x = 15

∠H =  5x - 16

∠H = 5*15 - 16

∠H = 75 - 16

∠H = 59°

∠F = 3x - 14

∠F = 3*15 - 14

∠F = 45 - 14

∠F = 39°

Therefore ∠H = 59° and ∠F = 39°

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The number of shares he buy is $615.

Given that Barney just bought stock in Purple Dinosaur Industries and he paid a total of $7,380 and the price of the stock is $12 for one share.

We want to find the number of shares Barney buys.

The total amount barney should pay is $7380.

The price of the stock for one share is $12.

The total number of shares barney buy is 7380/12=615.

Hence, the number of shares barney should buy when he paid a total $7380 and the price of stock for one share is $12 is $615.

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Answer:

146 degrees

Step-by-step explanation:

Sum of all triangle angles equal 180 degrees

We know 2

56 and 90 so we add them

90+56=146

Now we subtract to 180 to find the third angle of the triangle

180-146=34

To find x we gotta subtract 34 from 180 since it’s on a flat plane

180-34=146

angle x=146 degrees

hopes this helps please mark brainliest

The expectation of getting correct option out of total choice of 5 question.

Probability is the ratio of number of favorable outcomes to the total number of outcomes.It can not be more than 1.

we have five question each of them has four choice, two out of them are correct.

Number of correct choice in one question = 2

Total number of choice in a question = 4

probability to get correct option of one question = 2/4 = 0.5.

Then the probability of 5 question = 5(0.5) = 2.5

Thus, the expectation of correct choice is 2.5.

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The expressions 25x−(6x+12) and (25x−6x)+12 are equivalent expressions.

In this question we have been given two expressions 25x−(6x+12) and (25x−6x)+12

We know that the associative property of addition.

For any real numbers a, b, c

a + (b + c) = (a + b) + c

Consider an expression,

25x − (6x + 12)

= (25x - 6x) + 12                   ..........(Associative property)

Therefore, the expressions 25x−(6x+12) and (25x−6x)+12 are equivalent expressions.

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z = 134 (number of mezzanine units sold)

b = 834 (number of balconies sold)

m = 1120 (number of main floor sales)

Equations:

60m + 42b + 40z = 107,588

m = b + z + 152

b = 3z + 432

Substitute for "b" to get m = 4z + 584

------

Substitute for m and b and solve for "z"::

60(4z+584) + 42(3z+432) + 40z = 107588

240z + 35040 + 126z + 18144 + 40z = 107588

406z + 53184 = 107588

406z = 54404

z = 134 (# of mezzanine sold)

Solve for "b" and for "m" using z = 134

b = 3(134) + 432

b = 834 (# of balcony sold)

m = 834 + 134 + 152

m = 1120 (# of main floor sold)

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Answer:

Step 2 is incorrect

Step-by-step explanation:

Step 2 is where you are distributing out -5. Step 2 should be distribution rather than division property of equality.

The sample size required in this case is 71 pupils, which must be tested in order for the margin of error to be equal to 3 points.

When it comes to statistics, selecting a relatively small representative sample and conducting hypothesis testing on it typically makes it easier to analyze a large population. By boosting the sample size, the margin of error, which represents the sampling procedure's statistical precision, can be decreased.

From standard normal tables,

P( -2.326 < Z < 2.326) = 0.98 here

The sample size required here is computed as:

n = [(z * α) / МОЕ]² = [(2.326 * 18) / 5]² = 70.12

Therefore, the required sample size, in this case, is 71.

To ensure that the margin of error is equivalent to 3 points, 71 students must be assessed.

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COMPLETE QUESTION:

An IQ test is designed to have scores that have a standard deviation of a 10. A simple random sample of students at a torgo university will be given the test in order to construct a 95% confidence interval for the mean 10 of all students at the university. How many students must be tested so that the margin of error will be equal to 3 points? The sample size required for the desired margin of error is.(Round your answer to next whole number.)

Answer: THE ANSWER IS 26

The lengths of the piece she should cut is = 3  2/3

acc to our question-

hence,The lengths of the piece she should cut is = 3  2/3

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Using a proportional relationship, it is found that:

a) The equation is: y = 63/x.

b) When x = 21, the numeric value is of y = 3.

A proportional relationship is a special case of a linear function, with slope represented by the constant of proportionality of k and intercept of 0.

When the two variables are inversely proportional, we have a inverse proportional relationship, in which the output variable y is obtained by the division of k by the input variable x, as follows:

y = k/x.

For this function, when y = 7, x = 9, hence the constant is obtained as follows:

7 = k/9

k = 9 x 7

k = 63.

Hence the equation is:

y = 63/x.

The numeric value of the function when x = 21 is given as follows:

y = 63/21 = 3.

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Answer is (a) The solution set is {x | (-∞,-7)∪(5,12)}.

Given equation,

[tex]\frac{(x-5)(x+7)}{x-12} < 0[/tex]

For values (-∞,-7)

equation stands true

For values (-7,5)

equation stands false

For values (5,12)

equation stands true

For values (12,∞)

equation stands false

Hence, x ∈ (-∞,-7)∪(5,12).

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Step-by-step explanation:

There are 185 marbles in a bag. 40% of the marbles are blue and the rest are of other colours.

a. Find the percentage of marbles that are not blue.

100% - 40% = 60%

b. Find the number of marbles that are not blue​.

60% = 0.6

0.6 * 185 = 111 marbles

Step-by-step explanation:

8x + 24 is a simplified expression.

It is not an equation, so it can't be solved.

There are two terms in 8x + 24, 8x and 24.

The two terms are unlike terms, so they cannot be combined together.

Answer:

£3,774

Step-by-step explanation:

629 students at a school each pay £6 to go on a school trip. How much money do they pay in total?

629 * £6 = £3,774

Answer:

no of students= 629

amount paid each =£6

amount paid by all the students =no of students × amount paid each

:: 629

× 6

£3774

None of the values in the given set makes the inequality false.

Given that,
To check for the expression 5m/6 - 5 < m/2 + 3, whether the set of values S:{−24, 2, 20, 35}  holds or not.

Inequality can be defined as the relation of the equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.

Here,
given expression,
5m/6 - 5 < m/2 + 3
5m/6 - m/2 < 3 + 5
(5m - 6m)/6 < 8
-m < 48
m > -48

Thus, none of the values in the given set make the inequality false.

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The value of the expression in the form of k² will be (T²/4π²)-h²).

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given expression is T² = 4π² (h² + k²). The expression for the value of k² will be calculated as,

T² = 4π² (h² + k²)

(h² + k²) = T² / 4π²

k² =  (T² / 4π²) - h²

Therefore, the value of the expression in the form of k² will be (T²/4π²)-h²).

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The required third number will be 12 when numbers are in the A.P.

An arithmetic sequence is defined as an arrangement of numbers that is in a particular order.

The given data as

first number = - 2

fifth number = 26

Assume that the given numbers are in the A.P.

The formula to find the general term of an arithmetic sequence is,

Tₙ = a₁ + (n-1)d  ...(i)

Substitute the value of n = 5 and a₁ = -2 in the above formula

T₅ = a₁ + (5-1)d

26 = -2 + 4d

4d = 28

d = 7

For finding the third term (number):

T₃ = -2 + (3-1)7

T₃ = -2 + (2)7

T₃ = -2 + 14

T₃ = 12

Therefore, the required third number will be 12 when numbers are in the A.P.

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The numeric values for the population function are given as follows:

To obtain the numeric value of a function or of an expression, each instance of the input variable in the function or in the expression is replaced by the value at which we want to find the numeric value.

The function giving the population after t years is defined as follows:

[tex]P(t) = \frac{340}{1 + 6e^{-0.45t}}[/tex]

The initial population is the numeric value at t = 0, that is, the lone instance of t is replaced by zero, hence:

[tex]P(0) = \frac{340}{1 + 6e^{-0.45(0)}} = \frac{340}{7} = 49[/tex]

After eight years, the population is given by the numeric value at t = 8, hence:

[tex]P(8) = \frac{340}{1 + 6e^{-0.45(8)}} = 292[/tex]

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For the given coordinates of the vertices of trapezoid EFGH and E'F'G'H' the following statement is true and explain the relationship correctly :

"Trapezoid EFGH is not congruent to trapezoid E′F′G′H′ because there is no sequence of rigid motions that maps trapezoid EFGH to trapezoid E′F′G′H′.

trapezoid E F G H, is not congruent to , trapezoid E prime F prime G prime H prime, because there is no sequence of rigid motions that maps , trapezoid E F G H, to , trapezoid E prime F prime G prime H prime,"

As given in the question,

Trapezoid EFGH with coordinates of  vertices:

E(−8, 8), F(−4, 12), G(−4, 0), and H(−8, 4).

Trapezoid E'F'G'H' with coordinates of  vertices:

E′(−8, 6), F′(−5, 9), G′(−5, 0), and H′(−8, 3).

First option is not correct as there is no translation.

Third, Fourth, and Fifth options are not correct as both the trapezoids are not congruent.

Only option second describe it correctly which is:

Both the trapezoid are not congruent as there is no sequence of rigid motion that maps EFGH to E'F'G'H'.

Therefore, for the given coordinates of the vertices of trapezoid EFGH and E'F'G'H' the following statement is true and explain the relationship correctly :

"Trapezoid EFGH is not congruent to trapezoid E′F′G′H′ because there is no sequence of rigid motions that maps trapezoid EFGH to trapezoid E′F′G′H′.

trapezoid E F G H, is not congruent to , trapezoid E prime F prime G prime H prime, because there is no sequence of rigid motions that maps , trapezoid E F G H, to , trapezoid E prime F prime G prime H prime,"

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The simplification of the trigonometric expression (sec(t) - cos(t))/sin(t) is; tan (t)

There are different trigonometric ratios such as;

sin x

tan x

cos x

sec x

cosec x

cot x

Now, we want to simplify the trigonometric expression;

(sec(t) - cos(t))/sin(t)

We know that;

sec (t) can be written as 1/cos t

Thus;

(sec(t) - cos(t))/sin(t) = [(1/cos t) - cos t]/ sin t

= (1/(sint cos t) - cos t/ sin t

= (1 - cos²t)/(sin t cos t)

= sin²t/(sin t cos t)

= sin t/cos t

= tan t

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Answer:

yes for helena: not sure for edwin

Step-by-step explanation:

for helena, it would be a 270 cc rotation and then scale

for edwin, again im not sure, but it could be a refection and then scale

Answer:

y=-0.4x - 1.2

A line parallel to the line 4x + 7y = 49 - 2x + 4y must have a slope of - 2.

We know lines have various types of equations, the general type is

Ax + By + c = 0, and the equation of a line in slope-intercept form is

y = mx + b.

Where slope = m and b = y-intercept.

the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at x = 0.

Given a line that is 4x + 7y = 49 - 2x + 4y.

7y - 4y = - 2x - 4x + 49.

3y = - 6x + 49.

y = - 2x + 49/3.

Now, lines parallel to each other have the same slope.

Now if we simply the given options none of the lines have a slope of - 2 so none of the given lines are parallel to the line 4x + 7y = 49 - 2x + 4y.

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The record-holder ate 6.205 kilograms of hot dogs.

We are given that 73/10 hotdogs per minute is the record for the most hot dogs eaten and one hot dog and bun has a mass of 85 grams. Also, one kilogram is equal to 1,000 grams. Solving this problem would involve converting units.

In order to find out how many kilograms of hot dogs the record holder ate, we first need to convert 85 grams to kilograms. Since a kilogram is equal to 1,000 grams, 85 grams = 85 / 1,000 = 0.085 kilograms.

Then, we multiply 0.085 by 73 to get 6.205. We can conclude that the record-holder ate 6.205 kilograms of hot dogs.

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The slope of the line that passes through (1, 1)  and (7, 5) is 2/3

From the question, the points are given as

a. (1, 1) and (7,5)

Rewrite the above points properly

So, we have the following ordered pairs

(1, 1) and (7,5)

The slope of the line is then calculated using the following slope equation

Slope = (y₂ - y₁)/(x₂ - x₁)

Where

(x, y) = (1, 1) and (7,5)

Substitute the known values in the above equation

So, we have the following equation

Slope = (5 - 1)/(7 - 1)

Evaluate

Slope = 2/3

Hence, the slope of the line is 2/3

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Possible question

Find the slope of the line that passes through a. (1, 1) and (7,5)