Exercice n'11: Calcule:
A = 19+ (8-25);
B=(-15+6)-(23-18)
C = (154-6) +3-(-9+7):
D=-13+ (5+8)-(-4+8)
E = (-5)-(17+ (-13))-((-8) - (+2)):
F = (12-(-3)) - (12-(-3))
G=15-(-3-((+12)-16)):
H=-12-(-15 +30) -(65-20) - 20

Answer:

He can buy 8 pounds

Step-by-step explanation:

13.75/5=2.75

22/2.75=8 or 8 pounds the to check your answer 2.75x8=22

The slope of the line = change in y / change in x = 4/3.

The slope of a line is the rise over the run, which is the change in y/change in x = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]

To calculate the slope of the line that is given, chose any two points on the line as plotted in the given graph, say:

(30, 20) = [tex](x_1, y_1)[/tex]

(60, 60) = [tex](x_2, y_2)[/tex]

Substitute each of these values into the slope formula, [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]:

Slope for the given line (m) = (60 - 20)/(60 - 30)

Slope for the given line (m) = 40/30

Slope for the given line (m) = 4/3.

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There is a mistake in the first step. The correct way to add the linear expression is (−3.78b + 12) − (4.82b − 16) = -8.6b + 18

An expression is used to show the relationship between the variables.

The linear expression to add is as follows: (−3.78b + 12) − (4.82b − 16)

Firstly we open the bracket on the right side by multiplying the negative sign by the numbers in the brackets.

(−3.78b + 12) − (4.82b − 16)

−3.78b + 12 - 4.82b + 16

Combine like terms

−3.78b + 12 - 4.82b + 16

-3.78b - 4.82b + 12 + 16

Add the like terms

-3.78b - 4.82b + 12 + 16

-8.6b + 18

Therefore, she made the mistake in the first step.

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Nathan's salary is $48 and Will's salary which three times of Nathan's salary is $144.

What is salary?

An employment contract may include a salary clause as a type of recurring payment from an employer to an employee. In contrast, piece wages are paid separately for each job, hour, or other unit rather than on a regular schedule. Salary can also be seen from the perspective of operating a corporation as the expense of obtaining and keeping employees to carry out operations; this is known as a personnel expense or salary expense. Payroll accounts are used in accounting to record salaries.

It is given in the question that Will's salary is three times Nathan's salary.

So, lets assume that Nathan's salary is X it implies that Will's salary will be 3 times X = 3X

Together they earn $ 192.

So,

X + 3X = 192

4X = 192

X = 192/4

X = 48

Therefore, Nathan's Salary is $48

Since, Will's salary is 3 times of Nathan's salary,

So,

Will's salary = 3 (48) = 144

Therefore, Will's Salary is $144

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Answer: Look at photo. Your y intercept is -1 and the line goes up 4 and right 1.

Step-by-step explanation: Look at your last number, the -1. That should be on the y axis. Put that number there and then take 4x which can also be read as 4/1x and from the point of -1, go up 4 and right 1.

Answer:

you gave no context....so ill just guess 3.

Yes, I do agree with Jamie.

1 is NEITHER a prime number NOR a composite number.

Reason for agreeing:-

We know that a PRIME NUMBER is any given number that has only one as a factor. I.e it is only divisible by 1 AND ITSELF.

And, a COMPOSITE NUMBER is any number that is divisible by a number other than one and itself.

Here in the case of 1, we see that it is divisible by 1 and itself, and since it cannot have any other factor we can't put in either of the two categories

Due to length restrictions, the table of the transformed graph is shown in the explanation section. The equation of the transformed graph is g(x) = 3 · x.

In this question we find the representation of a line on a Cartesian plane and its corresponding table and we need to determine the table of the image of such function. The transformed graph is the result of dilating the original graph by a factor of 3. The value of g(x) is equal to three times the value of f(x):

       x                                       g(x)

     - 2                                       - 6

     - 1                                        - 3

       0                                         0

       1                                          3

       2                                         6

The equation of the original graph is f(x) = x and the equation of the transformed graph is g(x) = 3 · x.

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Answer:

y=3(500)

Step-by-step explanation:

I think this is ans but i do not know the ans.

Answer:

150 and 2/3 or 150.6666...

Step-by-step explanation:

1/6 + 1/2 = 1/6 + 3/6.

1/6 + 3/6 = 4/6 = 2/3

150 + 2/3 = 150 and 2/3

Mark as brainliest please

Answer: exact form is 452/3

decimal form is 150.6

Step-by-step explanation:

The name for the angle <2&<7 is an alternate interior angle by a transversal x.

It is defined as the angles when two lines intersect each other and at the intersecting point, some pair of angles are formed which we call vertically opposite angles, as the name describes that they have vertically opposite angles.

The angle pairs are given.

From the diagram:

<2&<7 = Alternate interior angle by a transversal x

<5 & <8 = Consecutive exterior angle by a transversal x

<9 & <16 = Consecutive exterior angle by a transversal x

<1 & <3 = Corresponding angles by transversal x

<4 & <3 = Adjacent angle by transversal g

<14 & <15 = Consecutive interior angle by a transversal y

Thus, the name for the angle <2&<7 is an alternate interior angle by a transversal x.

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A triangle is a closed polygon having number of sides exactly 3. Example - Equilateral Triangle, Isosceles Triangle, and etc.

The triangles are congruent when two pairs of corresponding angles and one pair of corresponding sides (between the angles) are both equal and the side is known as Included Side.

While, The triangles are congruent when two pairs of corresponding angles and one pair of corresponding sides (not between the angles) are both equal and the side is known as Angle Angle Side.

When two lines are perpendicular to each other, then they form Right Angles which are 90° in measure.

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To determine the price per ounce walter paid to ship the package you can use cross multiplication.

If 5.5 ounces ______$2.53

Then 1 ounce______$x

He will pay $0.46 per ounce

Answer:

To divide polynomials using long division, first divide the first term of the dividend by the first term of the divisor. This is the first term of the quotient. Multiply the new term by the divisor, and subtract this product from the dividend. This difference is the new dividend.

Answer:

24

Step-by-step explanation:

If the ratio of racers to divers is 6:2 then compare that to 18:x

6 times 3 is 18

2 times 3 is 6

x is 6

Now add 6 and 18

You get 24

Let g = cost of granola bars

b = cost of a bottle of water

10g+12b = 23

5g + 4b = 10

Multiply the second equation by -2

-10g -8b = -20

Add this to the first equation

10g+12b = 23

-10g -8b = -20

---------------------

4b = 3

Divide by 4

4b/4 = 3/4

b = 3/4 or .75

Now find g

5g + 4(3/4) = 10

5g + 3 = 10

5g = 7

g = 7/5

g = 1.4

We want to find 1g+ 1b

1.4+ .75 =2.15

Part B

We want our income to be at least 150

The cost of granola bars is 1.4 and we are selling x of them

The cost of water is .75 and we are selling y of them

It must be at least >=

1.4x + .75y >= 150

The square of any odd number is not always one more than a multiple of 8. The proposition is false.

Natural numbers can be divided into even numbers (i.e. 2, 4, 6) and odd numbers (i.e. 1, 3, 5). Let be n an element of the set of even numbers and the element 0, such that odd numbers are of the form:

x = 1 + n

Then,

(1 + n)²

1 + 2 · n + n²

If 1 + 2 · n + n² is one more than a multiple of 8, then we find the following relationship:

1 + 2 · n + n² = 8 · x + 1, where x is a natural number.

2 · n + n² = 8 · x

For x = 1:

2 · n + n² = 8

n² + 2 · n - 8 = 0

(n + 4) · (n - 2) = 0

Then, the least even number is 2 and the least odd number is 3. This implies that the proposition is not observed for (1 + n) = 1. Therefore, the proposition is false.

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Dennis's curtain company needs 252 feet long fabric to make 63 curtains.

Given,

The length of a curtain = 43 inches

Number of curtains they want to make = 63

We have to find the length of fabric in foot needed to make 63 curtains.

1 foot = 1/12 inches

Now,

The total length of fabric needed in inches = Number of curtains × Length of 1 curtain = 63 × 48 = 3024 inches

Convert this into feet.

That is,

3024 × 1/12 = 252 feet.

Therefore,

Dennis's curtain company needs 252 feet long fabric to make 63 curtains.

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Answer:

6.75

Step-by-step explanation:

Consider the ratio:

$4.50 : 6 apples

We need to multiply this ratio by a value such that the right side is 9 because there are 9 apples in array p. This value is 9/6 = 3/2.

$4.50 : 6 apples

× 3/2     × 3/2

$6.75 : 9 apples

So, the value of p, or 9 apples, is $6.75, which you will input as 6.75.

We need to use simple division to solve the problem. The number of cards each friend received is 11.

It is said that Landon has 56 cards, he kept 12 cards for himself, so we can subtract 12 cards from the whole lot to get the total number of cards he distributes among his friends.

56-12=44

There are 44 cards that he will distribute among his friends equally, we can get that by simply dividing the total number of cards by the number of friends which is 4.

number of cards for each friend=44/4=11

Therefore the number of cards each friend received is 11.

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The difference in the temperature of Bombay to St. Petersburg is 28° C.

What is the difference between two numbers and how is it calculated?
An arithmetic operation called subtraction simulates the process of deleting items from a collection. The negative symbol, or, denotes subtraction. Subtraction is the process of subtracting a matrix, vector, or other quantity from another according to predetermined criteria in order to find the difference.
Subtracting two numbers from each other is a type of subtraction. The difference between two numbers is calculated by deducting the smaller of the two values from the larger.

Given, the temperature in St. Petersburg = T₁ = -11° C
The temperature in Bombay = T₂ = 17° C
Using general comparison, we get T₂>T₁, since one is positive and the other is negative.
Therefore following available literature,
Difference in temperature = T₂ - T₁ = 17 - (-11) = 17 + 11 = 28° C
Thus, the required difference in temperature of Bombay to St. Petersburg is 28° C.

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The slope of the line is 3/7.

The slope of line will be calculated using the formula :

Slope = [tex] \frac{y_{2} - y_{1}}{x_{2} - x_{1}} [/tex]

The first point is (-2, 7) and second point is (-9, 4). So, [tex] y_{2}[/tex] = 4, [tex] y_{1}[/tex] = 7, [tex] x_{2}[/tex] = -9 and [tex] x_{1}[/tex] = -2. Keep the values in formula to find the values of slope of the line.

Slope = (4 - 7)/(-9 - -2)

Performing subtraction in numerator and denominator

Slope = -3/-7

Cancelling the negative signs we get -

Slope = 3/7

Thus, the slope of the line is 3/7.

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Just here for the points lol

Answer:

x=36

Step-by-step explanation:

(3x+3)^0+x+54= 90

x+54=90

x=90-54

x=36

The set  S:{42} will make the inequality false.

By definition, one can apply any monotonically rising function to both sides of an inequality without affecting how they relate to one another (provided that both expressions are in the domain of that function).

Given inequality is :

3/8 m - 9 < 1/4 m + 2

Solving the inequality we get:

or, m < 40

Therefore of all the elements of the set 42 makes the inequality false.

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Answer:

The last one

Step-by-step explanation:

this is really hard to read but you have to see which y values increase by a constant amount. Only the last case is linear in which each value increases by 3

Answer: 174

Step-by-step explanation: ok so we divide 220 by 11 to get 20 and times that by two to get 20 children on this journey then see that all children paid and 70 percent of adults so 70 percent of 220 is 154 and then 154 + 20 is 174 so thats the number of fares paid

the dimensions of the box that minimize the amount of material used is 4.641cm by 4.641cm by 2.32cm

Let the side of the square base be x

h be the height of the box

Volume V = x²h

50 = x²h

h = 50/x² ..... 1

Surface area =  x² + 2xh + 2xh

Surface area S =  x² + 4xh  ...... 2

Substitute 1 into 2;

From 2; S =  x² + 4xh

S = x² + 4x(50/x²)

S = x² + 200/x

To minimize the amount of material used; dS/dx = 0

dS/dx = 2x - 200/x²

0 = 2x - 200/x²

0 = 2x³ - 200

2x³ = 200

x³ = 100

x = ∛100

x = 4.6416cm

Since V = x²h

50 = 4.642²h

h = 50/21.548

h = 2.32cm

Hence the dimensions of the box that minimize the amount of material used is 4.641cm by 4.641cm by 2.32cm

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The slope of the line is 2 for the equation that is perpendicular.

Slope of the line:

Slope of the line refers the change in y coordinate with respect to the change in x coordinate.

Given,

Here we have the equation 3x + 6y = - 72 that is perpendicular to the line.

Now, we need to find the slope of the line from it.

First we have to convert the given equation of line into standard form,

Then we get,

3x + 6y + 72 = 0

Now we know that the slope of the line for this type of equation is,

m = -a/b

Whlie we compare the equation with the standard form ax + by + c = 0,

Then we get the value of a = 3 and b = 6

Therefore, the slope of the line is

m1 = -3/6

m1 =-1/2

Here we need to find the slope of a line which is perpendicular to the given line.

Through the definition we know that product of two perpendicular line is -1.

So,

m1 x m2 = -1

(-1/2) x m2 = -1

m2 = 2

Therefore, the slope of perpendicular line is 2

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The four functions with a local minima are:

y = x², y = |x|, y = sin x, y = cos x

A function f(x) has a local minima if its second derivative, f''(x) > 0 at the point where f'(x) = 0.

We use this to find which among the functions y = x, y = x², y = x³, y = |x|, y = 1/x, y = eˣ, y = √x, y = ln x, y = sin x, y = cos x, y = int(x), y = 1/(1+e⁻ˣ) has a local minima.

y' = 1. There is no point x such that y' = 0. So it has no local minima.

y' = 2x

y' = 0

⇒ 2x = 0

⇒ x = 0

y'' = 2 > 0

So y = x² has a local minima at x = 0

y' = 3x²

y' = 0

⇒ 3x² = 0

⇒ x = 0

y'' = 6x = 0 at x = 0

So y = x³ has no local minima.

i.e., y = x, when x ≥ 0 and y = -x , when x < 0

So y ' = 1, when x ≥ 0 and y' = -1, when x < 0

But at x = 0, y = 0 and y' = 0.

Now y'' = 0 everywhere. But the graph of y = |x| clearly shows that y = |x| has a local minimum at x = 0.

y' = -1/x²

Here, y' is nowhere zero and hence doesn't has a local minima.

y' = eˣ

 eˣ is nowhere zero and hence it does not has a local minima.

y' = 1/2√x

Here also  y' is nowhere zero and hence it does not has a local minima.

y' = 1/x

Here also y' is  nowhere zero and hence it does not has a local minima.

y' = cos x

y' = 0

⇒ cos x = 0

⇒ x = (2n+1)π/2, n = 0,1,2,....

y'' = -sin x

-sin ((2n+1)π/2)  = -1, when n = 0,2,4,... and -sin ((2n+1)π/2)  = 1, when n = 1,3,5,....

So y = sin x has local minima at x = (2n+1)π/2, where n = 1,3,5,....

y' = -sin x

y' = 0

⇒ -sin x = 0

⇒ x = nπ

y'' = -cos x

-cos(nπ) = (-1)ⁿ⁺¹

So, -cos(nπ) = 1, when n = 1,3,5,.... and -cos(nπ) = -1, when n = 0,2,4,...

Hence y = cos x has local minima at x = nπ with n = 1,3,5,....

y' = x

y' = 0

⇒ x = 0

y'' = 1 >0

So y = int (x) has local minima at x = 0

y' = e⁻ˣ/(1+e⁻ˣ)²

y' = 0

⇒ e⁻ˣ/(1+e⁻ˣ)² = 0

⇒ e⁻ˣ = 0

⇒ 1/eˣ = 0 which is not possible anywhere.

Hence y = 1/1+e⁻ˣ has no local minima.

Finally the four functions with local minima are:

y = x², y = |x|, y = sin x, y = cos x

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