IM BAD AT MATH HELP ME

Answer:

The answer you are looking for is x = 3/10

Step-by-step explanation:

D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

72/x = 3.6/0.015 // - 3.6/0.015

72/x-(3.6/0.015) = 0

72/x-240 = 0

72*x^-1 = 240 // : 72

x^-1 = 10/3

-1 < 0

1/(x^1) = 10/3 // * x^1

1 = 10/3*x^1 // : 10/3

3/10 = x^1

x = 3/10

x = 3/10

Answer:

x=0.3

Step-by-step explanation:

\(\frac{72}{x} = \frac{3.6}{0.015} \\\\\frac{72*0.015}{3.6} =x\\x=0.3\)

a)  P(X₁ = 3; X₂ = 4; X₃ = 2, and X₄ = 6), Probability = 0.0170 and b) P(X₁ = 3), Probability = C₃(0.2) (0.8) = 0.2501

Guests ordering a certain type of particular computer, 20 order an upgraded plates card, 30 order redundant memory, 15 order both the upgraded plates card and redundant memory, and 35 order neither. Fifteen orders are named at arbitrary. Let X₁, X₂, X₃, X₄ denote the separate figures of orders in the four given orders:

a) P(X₁ = 3; X₂ = 4; X₃ = 2, and X₄ = 6),

Probability = 0.0170

b) P(X₁ = 3)

Probability = C₃(0.2) (0.8)

= 0.2501

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The value of the inverse function at x = 4 is:

\(y = g^-^1^(^4^) =-5\)

From the attachment of graph :

Points available on the graph 'g' are (-5, 4), (-2, 1), (0, -1), (4, -2).

Since, rule to get the points lying on the graph of the inverse of the given function is,

(x, y) → (y, x)

And, (x, y) is the function of g and (y , x) is the inverse function of the g.

By the given rule, points on \(g^-^1^(^x^)\)  will be,

(4, -5), (1, -2), (-1, 0), (-2, 4)

Therefore, value of the inverse function at x = 4 will be:

\(y = g^-^1^(^4^) =-5\)

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Answer:

  (x, y) = (-1, 5)

Step-by-step explanation:

You want to solve this system of equations by substitution.

The idea of substitution means we want to replace an expression in one equation for an equivalent expression based on the other equation.

Here, the second equation gives an expression equivalent to "y", so we can use that expression in place of y in the first equation:

  5x +2(-2x +3) = 5 . . . . . . . . (-2x+3) substitutes for y

  x +6 = 5 . . . . . . . . . . simplify

  x = -1 . . . . . . . . . subtract 6

  y = -2(-1) +3 = 5 . . . . . use the second equation to find y

The solution is (x, y) = (-1, 5).

__

Additional comment

Choosing substitution as the solution method often works well if one of the equations gives an expression for one of the variables, or if it can be solved easily for one of the variables. The "y=" equation is a good candidate for providing an expression that can be substituted for y.

Any equation that has one of the variables with a coefficient of +1 or -1 is also a good candidate for providing a substitution expression.

  4x -y = 3   ⇒   y = 4x -3 . . . . . for example

The attached graph confirms the solution above.

Answer:

42

Step-by-step explanation:

One angle of a regular pentagon = 108°

One angle of a regular hexagon = 120°.

One angle of a square = 90°

∴ ∠BAC = 360 – (108 + 20 + 90) 360 – 318 = 42°

Yes, i agree with hector. The polygon in above figure is irregular due to unequal side lengths and Hector also states that it is not regular or irregular.

A polygon is a 2-D geometric figure that has a finite number of sides. The sides are equal in length. It is a closed shape formed by end to end joining of straight line segments. For examples of regular polygons are square, rhombus, equilateral triangle, etc.

An irregular polygon, also called a non-regular polygon. It is a shape that does not have all sides of equal length and all angles of equal. For examples scalene triangle, rectangle, kite etc. are examplses of irregular polygon.

Now, we have a polygon present in above figure. As we see that this figure has 8 sides and length of one side is equal to its opposite side, but all sides are not equal length. So, it is an irregular polygon. Hector also states that above figure is irregular polygon. Hence, i agree with hector.

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Complete question:

Hector states that the figure to the above is a polygon is not regular. Do you agree with hector. Explan

Answer:  16° F

Step-by-step explanation:

30-15=16

Answer:

No

Step-by-step explanation:

Since \(2^2+3^2 \neq 5^2\), the side lengths do not satisfy the Pythagorean theorem.

Answer:

Point K is located at -6.

Step-by-step explanation:

-15+9=-6

Point K is located at -6.

Answer:

8.4 cm^3 to the nearest tenth.

Step-by-step explanation:

The ratio of the volumes of the 2 cones is the ratio of the cubes of their radii.

So:

5^3 / 2^3 = 131 / v

v = 2^3 * 131 / 5^3

= 8 * 131 / 125

= 8.384.

The volume of smaller cone is 8.4 cm³

The volume of a cone formula is given as one-third the product of the area of the circular base and the height of the cone. According to the geometric and mathematical concepts, a cone can be termed as a pyramid with a circular cross-section. By measuring the height and radius of a cone, you can easily find out the volume of a cone. If the radius of the base of the cone is "r" and the height of the cone is "h", the volume of cone is given as V = (1/3)πr²h.

By applying Pythagoras theorem on the cone, we can find the relation between volume and slant height of the cone.

We know, h² + r² = L²

⇒ h = √(L² - r²)

where,

h is the height of the cone,

r is the radius of the base, and,

L is the slant height of the cone.

The volume of the cone in terms of slant height can be given as V = (1/3)πr²h = (1/3)πr²√(L² - r²).

Given:

The ratio of the volumes of the 2 cones is the ratio of the cubes of their radii.

Then,

5³ / 2³ = 131 / v

v = 2³ * 131 / 5³

v = 8 * 131 / 125

v = 8.384 cm³

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The solution for x is x ≤ -3/4.

a relationship between two expressions or values that are not equal to each other is called 'inequality.

To solve for x in the inequalities:

5x - 4 ≥ 12 and 12x + 5 ≤ -4

We'll solve each inequality separately:

5x - 4 ≥ 12

Adding 4 to both sides, we get:

5x ≥ 16

x ≥ 16/5

So the first inequality is solved for x as x ≥ 16/5.

Now, 12x + 5 ≤ -4

Subtracting 5 from both sides, we get:

12x ≤ -9

x≤ -9/12

x≤ -3/4

The only values of x that satisfy both inequalities are those that are less than or equal to -3/4.

Therefore, the solution for x is x ≤ -3/4.

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The probability that the number drawn is a multiple of 2 or 3 is 8/15 or 0.53.

This can be easily found by finding the number of multiples of 2 and 3 between 1 and 15 and adding them together. The multiples of three go from 3 to 15 and therefore there are 5 such numbers. The multiples of two go from 2 to 14 and hence there are 7 such numbers. Therefore, when we add these two numbers together, we get 12.

This is the total number of multiples of 2 or 3 between 1 and 15. We divide this by the total number of elements in the box, which is 15, to get the probability that the number drawn is a multiple of 2 or 3. This comes out to be 8/15 or 0.53.

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Answer:

7.5 laps

Step-by-step explanation:

First, you wanna figure out how many yards is in one lap

to do this, you would multiply 100 and 4 (four because there's four equal sides  in one lap)

100 x 4 = 400

You know their speed is 5 yards per second, so you wanna find out how many seconds they will be running

to do this, you multiply 60 (sixty because there's sixty seconds in one minute) and 10 (ten because that's the given amount of minutes)

60 x 10 = 600 seconds

now to found out how much they will run in 10 minutes you will multiply 600 by 5

600 x 5 = 3000 yards

now to find how many laps this is, you can divide 3000 yards by 400 yards

3000 ÷ 400 = 7.5 laps

Answer: all of the above

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

20 kilograms

Step-by-step explanation:

Answer:

About 19.95 kilograms

Step-by-step explanation:

Hope this helped! :)

Answer:

Step-by-step explanation:

They're both right angle triangles and have the same length and size , hence congruency

Answer:

80

Step-by-step explanation:

(●'◡'●)

\(\tt \dfrac{2.7}{2.5}=\dfrac{6.2}{AC}\\\\AC=5.740\)

Answer:

y=6

Step-by-step explanation:

Im assuming this is standard form. Simply set the y value to 0, and solve for x.

-2x+3(0)=-12

This can be rewritten as:

-2x=-12

divide by its coefficient, (-2)

y=6

I hope this helped you :)

Answer: 3.56 units^2

Step-by-step explanation:

\($$Given:\\In circle L:$$\begin{aligned}&\Rightarrow \angle K L M=34 \\&\Rightarrow K L=6 \text { units }\end{aligned}$$From the given figure, finding area of sector KLM:$$\begin{aligned}&\Rightarrow A=\frac{\angle K L M}{360} \times 2 \pi r \\&\Rightarrow A=\frac{34}{360} \times 2 \times 3.14 \times 6 \\&\Rightarrow A=3.56 \text { units}^2\end{aligned}$$\)

Factorial design are useful in testing theories because they enable researchers to investigate a theory's construct validity. so the correct answer  is option  (a).

A key technique for identifying the impact of numerous variables on a response is the factorial design. Traditionally, experiments are planned to ascertain how one variable affects just one response.

The corpus of knowledge supporting the analysis and application of test results. The definition and measurement of reliability are of primary relevance. Classical test theory, generalizability theory, and item response theory are examples of theoretical frameworks.

a) They enable academics to investigate a theory's construct validity.

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Answer:

1. 63.08 Rs

2. 5.03 Rs

3. 25.2 Rs

Explanation: answer to Q1 is already given.

Q2.=petrol price December2013 - December2011

=78.56-73.53

=5.03 Rs.

Q3.=Diesel price Aug '14 - Jan '11

=67.26-42.08

=25.2 Rs.

sorry idk the answer of Q4.