Please help it about calculus

Answer:

r ≤ 0

Step-by-step explanation in image.

Answer:

r<0

Step-by-step explanation:

r-(-1)<1

the oposite of -1 is 1

r+1<1

subatract 1 from both sides

r<1-1

subatract 1 from 1 to get 0

r<0

The total amount of money that they hared is 13000.

What is amount?

The amount of something is how much there is, or how much you have, need, or get. He needs that amount of money to survive. [ + of] I still do a certain amount of work for them.

Ann, ben and cheryl hare ome money in the ratio 3:7:10

Ben receive £650 more than Ann.

Ann = 3*650=1950

ben= 7*650=4550

cheryl hare ome = 10*650= 6500

The total amount of money that they hared 1950+4550+6500= 13000.

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speed of plane's ground = 155.769 Km/h

Speed is the rate at which an object travels along a path over time, whereas velocity is the speed and direction of an item's motion. In other words, speed is a scalar value, but velocity is a vector.

Units of speed = meter per second

So ln [tex]$\triangle A O B$[/tex], we have

[tex]$$[/tex]A=65[tex]^{\circ}+45^{\circ}=110^{\circ} \\[/tex]

O A=[tex]150 \mathrm{~km} / \mathrm{h} \\[/tex]

A B=15 [tex]\mathrm{~km} / \mathrm{h}[/tex]

[tex]\end{aligned}[/tex]using cosine Rule

[tex]\cos A=\frac{O A^2+A B^2-O B^2}{2(O A)(A B)} \\[/tex]

[tex]\cos 110^{\circ}=\frac{(150)^2+(15)^2-O B^2}{2(150)(15)} \\[/tex]

[tex]4500 \cos 110^{\circ}=22500+225-0 B^2 \\[/tex]

[tex]-1539.09064=22725-0 B^2 \\[/tex]

[tex]O B^2=22725+1539.09064 \\[/tex]

[tex]O B^2=24,264.0906 \\[/tex]

[tex]O B=155.769351 \approx 155.769 \mathrm{~km} / \mathrm{hr} \\[/tex]

[tex]O B \approx 17 \mathrm{k}[/tex]

using sine rule

[tex]\frac{\sin (A O B)}{15}=\frac{\sin A}{O B} \\[/tex]

[tex]\frac{\sin (A O B)}{15}=\frac{\sin 110^{\circ}}{155.769351} \\[/tex]

[tex]\sin (A O B)=\frac{15 \sin 110^{\circ}}{155.769351}=\frac{14.0953893}{155.769351}[/tex]

[tex]\sin (A \cap B)=0.0904888491 \\[/tex]

[tex]A O B=\sin ^{-1}(0.0904888491) \\[/tex]

[tex]A D B=5.19173084^{\circ} \\[/tex]

[tex]A O B=5.2^{\circ}[/tex]

Direction of plane [tex]=65^{\circ}+5.2^{\circ} \\[/tex] = [tex]=70.2^{\circ}[/tex]

Direction N = 70.2° E

speed of plane's ground [tex]$=155.769 \mathrm{~km} / \mathrm{h}$[/tex]

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Answer: 1 Student

Step-by-step explanation:

Hope this helps!

The probabilities for the given problem is calculated as 0.081 and 0.06 respectively.

Probability is the branch of Mathematics that deals with the measurement of the chance of occurrence of a random event.

The probability of any event always lie in the close interval of 0 and 1 [0,1].

The zero value of probability indicates that the event will not happen while its value equal to one indicate that it will happen.

Given that,

There are 3 blue marbles, 5 red marbles and 4 green marbles.

Then, the total number of marbles is 12.

The given problem can be solved as follows,

Part A:

The probability of getting 1 blue and 2 green marbles is,

P( 1 blue and 2 green) = (³C₁ × ⁴C₂)/¹²C₃

                                     = ( 3 × 6)/ 220

                                     = 9/110

                                     = 0.081

Part B:

The probability of selecting one blue marble = 3/12 = 1/4

After one blue marble is selected, the remaining number of marbles is 11.

Thus, probability of selecting 3 red marbles is,

⁵C₃/¹¹C₃

= 10/165

= 0.06

Part C:

In the Part A the probability is calculated by taking the ratio of total number of ways of selecting 3 marbles and the number of ways of selecting 1 blue and 2 green marbles.

And, in Part B the number of ways is calculated from the remaining number of marbles after one blue marble is chosen.

Hence, the probabilities for the given parts in the question are 0.081 and 0.06 respectively.

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Answer:

63.2%

Step-by-step explanation:

percentage increase= (Increase \ old number) * 100

= {(19 -7)/ 19} * 100

= (12\19) * 100

=63.16 %

Answer: BELOW

Step-by-step explanation:

m<1 62°

m<2 39°

m<3 26°

m<4 55°

m<5 55°

m<6 35

A triangle is equal to 180° so you keep adding angles till you have all your answers.

Answer:

no solution to the equation

Step-by-step explanation:

Answer:

no solution to the equation

Answer: -6 and 5

Step-by-step explanation:

-6 and 5

x+y = -1

xy = -30

x=-1-y

y(-1-y)=-30

-y^2-y=-30

-y^2-y+30=0

(y-5)(5+6)

y=5,-6

The unknown angle in the triangle is as follows:

A triangle is a polygon with three sides. The sum of angles in a triangle is 180 degrees.

A triangle can be named base on it's angles or sides. They include equilateral triangle, scalene triangle, Isosceles triangle, Right triangle, Acute triangle etc

Therefore, let's solve the angle C of the triangle as follows;

m∠C = 2x

x + 2x + 3x = 180

6x = 180

divide both sides by 6

x = 180 / 6

x = 30

Therefore,

m∠C = 2x = 2(30) = 60 degrees.

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Answer:

c) 72-34=38

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

5x = 6x - 3

6x - 5x = 3

x = 3

The equation is $1.75+$0.85m= $8.75, after solving the value m =8.24 miles.

An algebraic expression contains one or more variables along with numbers show the equality among them.

we use equation to determine an unknown value. we create equation based on a mathematical statement and finally solve it.

The following is the solution of equation of the statement given in question.

Given, fee per mile = $0.85

Charges = $1.75

Total cost of ride = $8.75

let, m is the number of miles travelled

Now, the equation is $1.75+$0.85m = $8.75

                  after solving     0.85m = 7.00

                             m = 8.24 miles

hence, the Uber travelled 8.24 miles

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The image point of (9,3) after the transformation r x-axis is (-9, -3 ).

The transformation of a function may involve any change.

Usually, these can be shift horizontally (by transforming inputs) or vertically (by transforming output), stretching (multiplying outputs or inputs) etc.

Since we know that Horizontal shift (also called phase shift):

Left shift by c units:

y=f(x+c) (same output, but c units earlier)

Therefore, Under a counterclockwise

a point (x, y ) → (- x, - y ) , thus

(9, 3 )→ (-9, -3 )

Therefore, the image point of (9,3) after the transformation r x-axis is (-9, -3 ).

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Answer: increasing by 0.25

Step-by-step explanation:

Answer:

It should be 5/6

Step-by-step explanation:

:)rawr

Answer:

28

Step-by-step explanation:

[tex]80 \times \frac{35}{100 } \\ = 28[/tex]

Answer:

28

Step-by-step explanation:

From the given pie chart:

If a total of 80 people were surveyed, to find the number of people in the sample that chose blue, simply find 35% of 80:

[tex]\begin{aligned}\implies \sf 35\%\;of\;80 & = \sf \dfrac{35}{100} \times 80\\\\&= \sf \dfrac{35 \times 80}{100} \\\\&= \sf \dfrac{2800}{100} \\\\&=\sf 28\end{aligned}[/tex]

Therefore, 28 people from a total of 80 surveyed chose blue as their favorite color.

The 4th term and the 6th term in the sequence are 1 and 5/6

From the question, we have the following parameters that can be used in our computation:

Tn= (4 + n)/2n

The 4th term and the 6th term in the sequence means that

n = 4 and n = 6

Substitute the known values in the above equation, so, we have the following representation

n = 4:

T(4) = (4 + 4)/2(4)

Evaluate

T(4) = 1

n = 6:

T(6) = (4 + 6)/2(6)

Evaluate

T(6) = 5/6

Hence, the terms are 1 and 5/6

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Answer:

13179

Step-by-step explanation:

It says half of the children are boys, which means division

26358 divided by 2 is 13179

Answer:

13,179

Step-by-step explanation:

the answer is 13,179 because 26,358 divided by 2 is 13,179

2=1/2

to get the slope of any straight line, we simply need two points off of it, for Juliana and Emiliano let's use those points in the picture below.

[tex]\stackrel{\textit{\LARGE Juliana}}{(\stackrel{x_1}{2}~,~\stackrel{y_1}{1})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{2})} ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{2}-\stackrel{y1}{1}}}{\underset{run} {\underset{x_2}{4}-\underset{x_1}{2}}} \implies {\Large \begin{array}{llll} \cfrac{1 }{ 2 } \end{array}} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{\LARGE Emiliano}}{(\stackrel{x_1}{1\frac{1}{2}}~,~\stackrel{y_1}{1})\qquad (\stackrel{x_2}{4\frac{1}{2}}~,~\stackrel{y_2}{3})} ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3}-\stackrel{y1}{1}}}{\underset{run} {\underset{x_2}{4\frac{1}{2}}-\underset{x_1}{1\frac{1}{2}}}}\implies {\Large \begin{array}{llll} \cfrac{2}{3} \end{array}}[/tex]

The standard deviation of the scores is  6.48

For given set of scores,  88, 94, 80, 79, 74, and 83

Here, the number of observations = 6

The mean of the scores would be,

μ = Σx/n

μ = (88 + 94 + 80 + 79 + 74 + 83)/6

μ = 498/6

μ = 83

Using the formula of standard deviation,

σ = √((Xi−μ)^2)/n

σ = √[(88 - 83)² + (94 - 83)² + (80 - 83)² + (79 - 83)² + (74 - 83)² + (83 - 83)²]/6

σ = √(252/6)

σ = √42

σ = 6.48

Therefore,  the standard deviation = 6.48

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Answer:

[tex]\huge\boxed{\sf Option \ B}[/tex]

Step-by-step explanation:

= (2x + 4) - (3x² + 2x - 1)

Solve parenthesis

= 2x + 4 - 3x² - 2x + 1

Combine like terms

= -3x² + 2x - 2x + 4 + 1

[tex]\rule[225]{225}{2}[/tex]

Answer:

Step-by-step explanation:

To solve this problem, we need to use the formula for the present value of a lump sum payment: $PV = FV \cdot (1 + r)^{-t}$, where $PV$ is the present value (the lump sum payment that needs to be made), $FV$ is the future value (the amount borrowed), $r$ is the annual interest rate, and $t$ is the number of years the money is borrowed for.In this case, we are given that $FV = 12,000$, $r = 8%$, and $t = 5$ years. Plugging these values into the formula, we get $PV = 12,000 \cdot (1 + 0.08)^{-5} = 12,000 \cdot 0.5987 = 7,184.40$.Therefore, the lump sum payment that needs to be made is $PV = \boxed{7184.40}$. The answer is $\boxed{\text{(a)}\ $16,800.00}$ is incorrect.

We will see that the amount of gasoline increased by 5.25 gallons over that five-day period.

Here we want to study the table to see the total change in the amount of gasoline over the five-day period.

Now we need to study the given graph:

Notice that each day we have the change of that particular day, then we just need to add all of these changes and we will get the total change.

Where the negative numbers mean that the gasoline was used, and the positive numbers represent a charge in the gasoline (so it increases).

C = -1.05 - 1.20 - 0.85 + 10.50 - 2.15 = 5.25

This means that, in total, the amount of gasoline increased by 5.25 gallons over that five-day period.

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Answer:

9

Step-by-step explanation:

4×1/2=2 and adding on 7 would make 9

9

Expressions are mathematical statements without equal signs.

Expressions and Variables

Expressions are simply combinations of different numbers and operators. The reason 4a + 7 qualifies as an expression is because it has 2 values connected by an operator and no equal sign. In this expression, there is multiplication and addition.

Variables are letters in equations or expressions that represent some numerical value. Variables can represent any number, but in this case, we are told a = 1/2.

Solving the Expression

To solve the expression, all we need to do is plug 1/2 into the expression.

Then, multiply,

And add,

So, when a = 1/2, 4a + 7 = 9.

The solution is x²

The monomial that will make the expression as a square of a sum or a difference of trinomial is x²

What is an Equation?

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.

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 data ,

Let the equation be represented as A

Now , a monomial that will make the expression as a square of a sum or a difference of trinomial is calculated as

(a-b)² = a² -2ab + b²

where a² = 36

taking square roots on both sides of the equation , we get

a = 6

-2ab = -12x

So , one of the variable is x

So , substituting the value of b = x , we get

( 6 - x )² = 36 - 12x + x²

Therefore , the value of the monomial is x²

Hence , The monomial that will make the expression as a square of a sum or a difference of trinomial is x²

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After solving the given expression, the value obtained will be equal to 7/12.

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.

Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.

As per the given fraction in the question,

4/6 - 1/12

Take LCM as 12 and then solve,

= (8 - 1)/12

= 7/12

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Answer: Rose got the better deal!

Step-by-step explanation:

Rose got the better deal, she only spent .10 cents for every piece, while joe spent .15 cents and only got 10 pieces.

Answer:

93.331 ft

Step-by-step explanation:

Use the trigonometric function sine (opposite/hypotenuse)

sin(59) = 80

   1           x

You can switch x and sin(59)

x =     80  

     sin(59)

Plug into calculator

x = 93.331 ft