What is mixed fraction in Maths for Class 7?.

The value of √N is 3.16159

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a² + b² = c².

Given here: A quadrilateral WXYZ with ∠Z=75 and ∠X=105

Let P be a point on ZW such that ZP=x and WP=4-x, then we form a right-angled triangle ΔZPY with tan 15°=x/PY

∴ PY=x/tan 15

       =3.732x

Now using Pythagoras' theorem we get ZY as

 [tex]\sqrt{13.927x^2+x^2} \\=\sqrt{14.92x^2}\\ =3.862641x[/tex]

Now let's connect the diagonal ZX we get the right triangle ZWX

Thus using Pythagoras' theorem we get

ZX=[tex]\sqrt{4^2+4^2}[/tex]

    =4√2

Again let Q be an extension such that YQ=4-x & ∠YXQ=75°

Thus Sin 75=4-x/√N

            √N=4-x/0.965923

squaring both sides we get N=(4-x)²/0.9330127........(1

Now using the Pythagoras theorem in ΔZYX we get

√N=

[tex]\sqrt{ZX^2-ZY^2} \\=\sqrt{32-14.92x^2} \\[/tex]

⇒N=32-14.92x²..,.......2)

Thus equation two values of N we get

(4-x)²/0.9330127=32-14.92x²

16-8x+x²=29.8564-13.920549x²

14.921x²-8x-13.856=0

Thus using the quadratic formula we get the value of x as

x= 8±29.85 /29.84

x=1.2684  (∵ Distance cannot be negative)

∴ Value of N=32-14.92×1.2684

                    N=13.075

                   √N=3.6159

Hence, The value of √N is 3.16159

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Yes, the distributive law is followed by the addition arithmetic operation. 

Distributive Property of Multiplication Over Addition: This implies that the operation involves dividing or distributing the things. The distributive law applies to addition and subtraction arithmetic operation.

For example, let us multiply 8 by the sum of (20 + 3). Mathematically, we can represent this as 8 (20 + 3). First, use the distributive property to multiply each addend by 8. This is called distributing the number 8 over two addenda and then adding their products. That is, multiplication of 8(20) and 8(3) will be performed first, then addition. The result is 8 (20) + 8 (3) = 160 + 24 = 184.

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Answer:

he did 89.5 hours in total

Step-by-step explanation:

Using umitary mwthod we get

4. 1

358. x

soling it

4x=358

or,x=358÷4

or,x=89.5 hours

©Thank You

Answered By Solution 49

The answer is 89.5 because it's 358 divided by 4.

The elimination method is used to solve a linear system using multiplication.

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When drawing horizontal or vertical lines with a triangle, you need to use two triangles at the same time. You can draw lines at angles of 30, 45, 60, and 90 degrees by combining the two.

Additionally, the values of the side lengths of this triangle are always inversely proportional to one another. and x2 is the side length that is in opposition to the 90-degree angle. likewise, the side length that is in opposition to the 90-degree angle is 72. Additionally, the side length at the opposite end of the 45-degree angle is 2.

Tips for Remembering the 30-60-90 Triangle Rule Remembering the ratio 1 is all it takes to remember the 30-60-90 triangle rules: √3 : 2, and being aware that the longest side length is always in opposition to the largest angle (90 degrees) and the shortest side length is always in opposition to the shortest angle (30 degrees).

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Answer:

x = 100

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. In this case, you will add 10 to both sides of the equation, to isolate x:

x - 10 = 90

x - 10 (+10) = 90 (+10)

x = 90 + 10

x = 100

x = 100 is your answer to the equation.

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Answer: what do you have to do

Step-by-step explanation:

Answer: 9 hours

Step-by-step explanation: To find the answer, I did:

315 / 35 = ? * 1

=9 * 1

= 9

I divided the 315 by the 35 because that would give us how many hours she drives. (at a constant rate) So, given that, I got 9. I hope this helped!

Answer:

5/9

Step-by-step explanation:

The scale factor which was used to reduce the picture include the following: B. 1/4.

In Geometry, a scale factor can be defined as the ratio of two corresponding side lengths or diameter in two similar geometric figures such as airplanes, which can be used to either horizontally or vertically enlarge (increase) or reduce (decrease or compress) a function that represents their size.

Mathematically, the scale factor of a geometric figure can be calculated by dividing the dimension of the image by the dimension of the pre-image (original figure):

Scale factor = Dimension of image/Dimension of pre-image

Scale factor = 4/16 = 5/20

Scale factor = 1/4.

Therefore, this photo was reduced by a scale factor of 1/4.

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Answer choices are:

4

1/4

12

1/12

No, 39 is not a perfect square number because it can't be equal to square of any integer.

An integer that can be expressed as the square of another integer is called a perfect square. In other words, a perfect square is the square of an integer such as 1 = 1², 4 = 2², 9 = 3², 16= 4², , forward. Thus , perfect square formula is written as N = x², where x is any integer. I have the number 39 and I need to check if it is a perfect square. For this we can take the square root of this number. A number is a perfect square if its square root is an integer. So, √39 = √3×13

= 6.2449 ( using calculator)

Which is not an integer, so it is not a perfect square.

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A linear equation is an equation in which the highest power of the variable is 1 and a nonlinear equation is an equation in which the highest power of the variable is greater than 1.

A linear equation example:

y = 2x + 3

This is a linear equation in one variable, x. The highest power of x is 1 and the coefficient of x is 2.

A nonlinear equation example:

y = x^2 + 3x + 2

This is a nonlinear equation in one variable, x. The highest power of x is 2 and the coefficient of x is 1.

Another example of nonlinear equation is:

y = x^3+3x^2-5x+1

This is a nonlinear equation in one variable, x. The highest power of x is 3 and the coefficient of x is 1.

Note that the linear equation can be in any number of variables, and the nonlinear equation can also be in any number of variables, but the degree of the polynomial should be greater than 1.

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Three numbers that would not be appropriate for the input (x) on a function table for this equation would be:

1. A negative number, such as -5. This is because the number of hives cannot be negative, it is a physical quantity.

2. A non-integer, such as 3.5. This is because the number of hives cannot be a fraction or decimal, it is a whole number.

3. A number greater than 1, such as 2. This is because in the context of the problem, one hive is assumed, and the function is describing the production of one hive.

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The difference between the smallest 6-digit number with five different digits and the greatest 5-digit number with four different digits is 358.

The aim is to find the largest 5-digit number with four different digits and the smallest 6-digit number with five different digits, and then we need to find how many numbers are between these two values.

Let's start by finding the smallest 6-digit number with five different digits.

We know that 0 is the smallest digit that can not be used in the highest place value, so we will consider the next smallest digit, 1; therefore, it can be used in the highest place value.

Thus, we can create the required 6-digit smallest number with 0 and 1.

Hence, the smallest 6-digit number is 100234.

Now, we will discover the largest 5-digit number.

As we know, the largest digit is 9, which can be used anywhere. So, we will form the largest 5-digit number with the digit 9.

Thus, the largest 5-digit number is 99876.

Now, calculate the difference between these two numbers.

So, we can determine the difference between the smallest 6-digit number and the largest 5-digit number by subtracting the smallest from the largest.

Thus, we get,

⇒100234 - 99876

⇒358

Hence, 358 is the difference between the smallest 6-digit with five different digits and the largest 5-digit number with four different digits.

--The given question is incomplete; the complete question is

"What is the difference between the smallest 6-digit number with five different digits and the greatest 5-digit number with four different digits?"--

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Answer:

A. See attached graph

B. [tex]\boxed{y = 0.12x^2+ 12}[/tex]

C. [tex]\boxed{160\;square\;feet}[/tex]

Step-by-step explanation:

Consider the figure which shows the cross-sectional view of the parabolic tunnel as viewed from the entrance

A. See attached graph

B. The parabola is drawn with the y-axis as the axis of symmetry.

The x-intercepts are at (-10, 0) and (10, 0)

The vertex is at (0, 12)

The vertex form equation for a parabola is
y = a(x - h)² + k

where (h, k) is the vertex - the (x, y) coordinates of the vertex

Here h = 0, k = 12

So the parabola equation is:

y = a(x - 0)² + 12

y = ax² + 12

To find a, plug in one of the x-intercepts, say (10, 0)

We get

0 = a(10)² + 12

0 = 100a + 12

100a = -12

a = -12/100 = -0.12

Therefore the equation of the parabola is
[tex]\boxed{y = 0.12x^2+ 12}[/tex]

C. The cross-sectional area is given by the formula:

D.  To find the area of the parabola between x = -10 and x = 10 which forms the base of the parabola, you can use the formula
[tex]A = \dfrac{2}{3}bh\\\\[/tex]

where b is the base length and h is the height

Using the values for b = 20 and h = 12 we get

[tex]A = \dfrac{2}{3}\cdot 20 \cdot 12 = 160 \textrm { square feet}[/tex]

Using the definite integral, let's find the area between x = -10 and x = 10

I am not going through every step but leading you to the final answer

[tex]\int _{-10}^{10}\left(\:-0.12x^{2\:}+\:12\right)dx\\\\\\\textrm{We have}\\\\0.12\cdot \int _{-10}^{10}x^2dx=0.12\left[\frac{x^3}{3}\right]_{-10}^{10}\\\\[/tex]

[tex]=0.04\left[x^3\right]_{-10}^{10}\\\\= 80\\\\[/tex]

Therefore
[tex]-0.12\cdot \int _{-10}^{10}x^2dx = -80[/tex]

[tex]\int _{-10}^{10}12dx = \left[12x\right]_{-10}^{10} = 240[/tex]

So total area = -80 + 240 = 160 square feet

Ans: Cross sectional area = [tex]\boxed{160\;square\;feet}[/tex]

Answer:

m = 24

Step-by-step explanation:

To solve the equation m/3-7 =1, we can start by isolating m on one side of the equation. To do this, we will add 7 to both sides of the equation:

m/3 - 7 + 7 = 1 + 7

m/3 = 8

The next step is to multiply both sides of the equation by 3 to get rid of the fraction:

m/3 * 3 = 8*3

m = 24

So the solution to the equation is m=24

Answer:

2.74

Step-by-step explanation:

Answer: 2.74

Step-by-step explanation: When it says 1/5 of this number, you just divide it by the denominator (5) So, 13.7 / 5 = 2.74. To check, we multiply 2.74 by the denominator. (5) We get 13.7. This makes the statement true. I hope this helped!

The algebraic expression to represent the total cost of joining the gym using "m" as a variable would be: 100 + (30m)

An equation is a mathematical statement that asserts the equality of two expressions. It is written in the form of "left-hand side = right-hand side," where both sides are expressions that are made up of numbers, variables, and mathematical operations.

The algebraic expression to represent the total cost of joining the gym using "m" as a variable would be:

100 + (30m)

This represents the one-time fee of $100 to join plus the monthly fee of $30 multiplied by the number of months, represented by the variable "m".

Thus, The algebraic expression to represent the total cost of joining the gym using "m" as a variable would be: 100 + (30m)

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Using "m" as a variable, the algebraic expression for the total expense of joining the gym would be: 100 + (30m)

This is the sum of the $100 one-time joining fee and the $30 per month price, multiplied by the variable "m," which stands for the number of months.

Therefore, using "m" as a variable, the algebraic expression to represent the overall expense of joining the gym would be: 100 + (30m)

The equivalent expression of (-7 + 2i) + 6i- (11-15)  is -3 + 8i.

Two algebraic expressions are said to be equivalent if their values obtained by substituting the values of the variables are same. In other words, equivalent expression are usually the same.

We can know the equivalent expression of (-7 + 2i) + 6i- (11-15) by simplifying it.

Hence, let's simplify (-7 + 2i) + 6i - (11 - 15) as follows:

Therefore,

(-7 + 2i) + 6i - (11 - 15)  = -7 + 2i + 6i - 11 + 15

combine like terms

-7 + 2i + 6i - 11 + 15 = -7 + 15 - 11 + 2i + 6i

Hence,

-7 + 15 - 11 + 2i + 6i = -3 + 8i

Therefore,

(-7 + 2i) + 6i - (11 - 15) = -3 + 8i

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Answer: -7/3

Step-by-step explanation:

y/3 - 8 = -15

y/3 = -7

y = -7/3

The correct way to write greater than 35 is A > 35 where it tells that A having greater value than 35.

In mathematics,

→The greater than symbol (>) is used to indicate that one value is larger than another. For example, if we say "A > B," this means that the value of A is greater than the value of B.

→The less than symbol (<) is the opposite, it indicates that one value is smaller than another. For example, if we say "A < B," this means that the value of A is less than the value of B.

→The greater than or equal to symbol (≥) indicate that one value is larger than or equal to another. For example, if we say "A ≥ B," this means that the value of A is greater than or equal to the value of B.

→The less than or equal to symbol (≤) indicate that one value is smaller than or equal to another. For example, if we say "A ≤ B," this means that the value of A is less than or equal to the value of B.

These symbols are commonly used in mathematical expressions, equations, and inequalities.

To write "greater than 35" in mathematical notation, you would use the greater than symbol (>) followed by the letter 35. For example:

A > 35

This means that A is greater than 35.

Therefore, the correct way to write greater than 35 is A > 35 where it tells that A having greater value than 35.

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Answer:

20 weeks

Step-by-step explanation:

Salma's savings can be represented by the equation S = 35 + 8t, where t is the number of weeks after the beginning of the year.

Henry's savings can be represented by the equation H = 95 + 5t

To determine the number of weeks after the beginning of the year until Salma and Henry have the same amount of money saved, we need to set the two equations equal to each other and solve for t:

35 + 8t = 95 + 5t

3t = 60

t = 20

So it would take Salma and Henry 20 weeks after the beginning of the year to have the same amount of money saved.

The solution set for the given inequality w + 43 ≤ 51 is; w ≤ 8. Hence,

It follows from the task content that the solution set for the given inequality w + 43 ≤ 51 is to be determined and it's solutions be identified among the answer choices.

Given; w + 43 ≤ 51

w ≤ 51 - 43

w ≤ 8.

On this note, the only number which is a solution among the given answer choices is 7 as it is less than 8.

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The value of Cosec2a 1 and the value of Cot2a is also Cot A.

cosec 2A + cot 2A

1/sin2a + cos2a/sin2A

= (1+cos2A)/sin2a

=(1 + 2cos²a -1)/sin2A

=(2cos²A)/sin2A

= (2.cosA.cosA)/2.sinA.cosA

=cosA/sinA

=cotA

A right-angled triangle's hypotenuse to opposite side ratio is a right-angle triangle's trigonometric function known as the reciprocal of sine.

The cosecant of an angle in a right triangle is obtained by dividing the length of the hypotenuse by the length of the other side.

It is written as Cosec and csc on occasion. In trigonometry, it is one of the trigonometric functions.

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Answer:

(1) ... y1 = -2.5, y2 = 4

(2) ... y1 = -2, y2 = 3

(3) ... z1 = -10, z2 = 0

(4) ... x1 = 0, x2 = 3

Hope this helps <3

Step-by-step explanation:

Answer:

1. y= -5/2, 2

2. y= 3, -2

3. z= 0,-10

4. x= 0,3

Step-by-step explanation:

Answer:r=175 this is for IXL I hope this helps

Step-by-step explanation:

r/-25 =-7

Multiply both sides of the equation by -25

-25 times r/-25=-25 time (-7)

Multiplying two negatives equals a positive: (-) times (-) =(+)

25•r/25=-25•(-7)

then

Cancel out the greatest common factor 25

R=-25 times (-7)

Also Multiplying two negatives equals a positive: (-) times (-) =(+)

r=25 times 7

Multiply the numbers 25•7

Then you get

R=175

The required radius of the cylinder that can be covered by the paint is 3.8 feet. Option D is correct.

Franco has enough paint to cover an area of approximately 226 square feet. He needs to paint a cylinder that is 5 feet, and the maximum possible radius of the cylinder that can be covered by the paint is to determined.

Recall that a  cylinder is defined as a 3D solid that keeps two identical bases joined by a curved surface, at a certain distance.

Here,

Franco has enough paint to cover an area of approximately 226 square feet.

Area of the cylinder = 226

πr²h = 226

h = 5 feet and π = 3.14

3.14 * 5 * r² = 226

r² = 226/15.70

r = √14.70

r = 3.80

Thus, the required radius of the cylinder that can be covered by the paint is 3.8 feet. Option A is correct.

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If the degree is odd and and the leading coefficient is negative then the right end of the graph will point down and the left end will point up .

The End Behaviour of the graph of polynomial is said to be defined by the degree and leading coefficient of polynomial .

the end behaviour for the Odd degree polynomial is given as :

(i) If the degree of polynomial is odd and lead coefficient is positive, then the right end of graph will point up and the left end will point down.

(ii) If the degree of polynomial is odd and the lead coefficient is negative, then right end of graph will point down and left end will point up .

So , according to the question , for the given condition , the right end will point down and left end will point up .

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