-2x-5=4 solve for x and please tell me how you got it

Answer:

1. 12

2. 8

Step-by-step explanation:

\PLEASE MARK BRAINLIEST IT WILL HELP SM

Answer:

600

Step-by-step explanation:

Assume x=target number

55%(x)=300

55%=0.55

0.55x=300

x=300/0.55

x=600

Answer

600

Step-by-step explanation:

Here is the formula/format:

Part             %

------     =    --------

Whole         100

We are trying to find the "whole" in this case, so I did:

330            55

-------   =   -------  (this says that 55% of the number we are looking for is 330)

x                100

Then, I cross multiplied and got: 55x= 33,000

From there, I divided 33,000 by 55 (inverse operations) to get x = 600.

I hope this helps! :)

The least amount of fencing to surround the playground is to use a dimension 130m by 90m

A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. Calculating the perimeter has several practical applications.

The area of the play ground is 16900m². To find the possible dimensions of length and width we find the factors of 16900

The factors are 26×650, 1300× 13, 130×90 and 65×260

The formula of perimeter of a rectangle is 2(l+w)

using all these factors, dimension 130 and 90 will give the least perimeter of 440 i.e 2(130+90)= 440.

Therefore the least dimension for fencing the play ground is 130m by 90m.

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Answer:

Step-by-step explanation:

2) reflexive property

3) Triangle BCD, SSS

4) Angle 3, Angle 2

5) Alternate interior angles theorem

6) If a quadrilateral has 2 pairs of opposite sides that are parallel, the quadrilateral is a parallelogram.

a) The equation 1 has an infinite number of solutions, as both linear functions have the same slope and internet, hence Nyoko is incorrect.

b) Nyoko cannot find a value of b so that the equation has no solutions.

The equation 1 is given as follows:

6x - 5 + 2x = 4(2x - 1) - 1.

Combining the like terms and applying the distributive property, the simplified equations are given as follows:

8x - 5 = 8x - 4 - 1

8x - 5 = 8x - 5.

As they are linear functions with the same slope and intercept, the number of soltuions is of infinity.

The equation 2 is given as follows:

3x + 7 = bx + 7.

A system of linear equations will have zero solutions when:

As they have the same intercept for this problem, it is not possible to attribute a value of b such that the equation will have no solution.

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1/64 fraction is equal to 0.015625 in decimal form.

To change the fraction 1/64 to a decimal, we need to perform division.

1 divided by 64 can be written as:

0.015625

----------

64 | 1.000000

   0

  10

   0

The result of the division is 0.015625. This means that 1/64 is equal to 0.015625 in decimal form.

Note that in this case, we carried the division out to six decimal places, but the question specified that we should carry it out to three decimal places. In that case, we would round the answer to 0.016.

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Answer:

25

Step-by-step explanation:

10+7+8=25 this is because her cat weighs 8 pounds and her dog weighs 10 pounds more so that's 18 lb. after words it says Cameron's dog weighs 7 pounds less than bills so you do 18+7 and that equals 25

Answer:

\(P(A) =\frac{40}{44}\)

Step-by-step explanation:

Ω - is the number of all possible events.

|Ω|=44=|Omega|

A - the event that drawn card from deck isn't an orange card.

|A|=44-4=40

\(P(A)=\frac{|A|}{|Omega|} =\frac{40}{44}\)

Answer:

see explanation

Step-by-step explanation:

(a)

Given y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition when x = 3, y = 18 , then

18 = 3k ( divide both sides by 3 )

6 = k

y = 6x ← equation of proportion

(b)

(i)

when x = 12 , then

y = 6 × 12 = 72

(ii)

when y = 42

42 = 6x ( divide both sides by 6 )

7 = x

Answer:

&usher jxn xviii h h bxjcu hxhxh ucjcucjj cjdnjxj j uidusijxkd

The graph of the inequality is a straight line that passes through point 3 and represents the solution set.

A mathematical statement known as an inequality in mathematics examines two values or quantities and determines whether they are equal or not. Ranges of values or equation solutions can also be described by inequality. Inequality x 10 defines all x values that are less than or equal to 10, whereas inequality x > 3 represents all x values that are more than 3. For a visual representation of the range of values that fulfil an inequality, inequality's can be graphed on a number line.

The given inequality is 4x - 2 < 10

The inequality can be written as:

4x < 10 + 2

4x < 12

x < 3

Hence, the graph of the inequality is a straight line that passes through point 3 and represents the solution set.

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Answer:

\( m\angle PRQ =49\degree \)

Step-by-step explanation:

\( m\angle PSQ = 360\degree - (128\degree + 134\degree )\)

\( m\angle PSQ = 360\degree - 262\degree \)

\( m\angle PSQ = 98\degree \)

Now, by inscribed angle theorem:

\( m\angle PRQ = \frac{1}{2} \times m\angle PSQ \)

\( m\angle PRQ = \frac{1}{2} \times 98\degree \)

\( m\angle PRQ =49\degree \)

The volume of the pyramid is approximately 574,533.33 cubic meters.

To find the volume of a pyramid, you use the formula: V = (1/3) × base area × height, where B is the area of the base and h is the height of the pyramid.

Given that the side length of the square base is 140 m and the height is 91 m.

Since the base of the pyramid is a square with a side length of 140 m, we can find its area by multiplying the side lengths: B = 140m x 140m = 19,600 square meters.
By calculating this expression, you'll find the volume of the pyramid.

Now we can plug in the values for B and h into the formula: V = (1/3)(19,600 square meters)(91 meters) = 574,533.33 cubic meters.

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The most appropriate choice for Green's Theorem, Cauchy Riemann Equation and Cauchy Goursat Theorem will be given by-

Cauchy Goursat Theorem has been proved using Green's Theorem-

What is Green's Theorem, Cauchy Riemann Equation and Cauchy Goursat Theorem?

Green's Theorem

Let C be a positively oriented, piecewise smooth, simple closed curve in a plane, and let D be the region bounded by C. Then

Green's Theorem states that

\(\int_c (Mdx + Ndy)=\int_D(M_x - N_y)dxdy\)

M and N are functions of x and y

Cauchy Goursat Theorem

If a function f is analytic at all points interior to and on a simple closed contour C, then

\(\int_c f(z) dz = 0\)

Cauchy Riemann Equation

If \(f(z)=u(x,y) + i v(x,y)\) is analytic at z = x + iy then Cauchy Riemann Equation states that

\(u_x = v_y, u_y = -v_x\)

Here,

Let \(f(z) = U(x,y) + iV(x,y)\)

\(U, V, x, y\) are continuous

\(f(z)dz = (U + i V)(dx + i dy)\)

\(f(z) dz = (U dx - Vdy)+i(Vdx + Udy)\)

\(\int_c f(z) dz = \int_c(U dx - Vdy)+i\int_c(Vdx + Udy)\), C is the curve

By Green's Theorem,

\(\int_c f(z)dz = \int_D(U_ydydx - V_xdxdy)+i\int_D(U_xdxdy + V_ydydx)\), D is the surface

\(\int_c f(z)dz = \int_D(-U_y - V_x)dxdy+i\int_D(U_x - V_y)dxdy\)\(\int_c f(z)dz = \int_D(V_x - V_x)dxdy+i\int_D(U_x - U_x)dxdy\)

Since \(f'\) is continuous, \(f\) is analytic

So \(f\) satisfies Cauchy Riemann equation

\(U_x = V_y, U_y = -V_x\)

So,

\(\int_c f(z)dz = \int_D(V_x - V_x)dxdy+i\int_D(U_x - U_x)dxdy\)

\(\int_c f(z)dz = 0\)

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Complete Question

Suppose f is continuously complex differentiable on Ω , and T⊂Ω is a triangle whose interior is also contained in Ω . Apply Green's theorem to show that

\(\int_T\) f(z)dz=0

This provides a proof of goursat’s theorem under the additional assumption that f′ is continuous.

.

Yes, there is a proportion relationship between the number of bushel and acres of land. The relationship is the number of busher is directly proportional to the number of acres of land.

Direct proportion or direct variation is the relation between two quantities where the ratio of the two is equal to a constant value.

direct proportion is given as y= kx

Where y and x are the variables and k is constant.

If the bushel of orange is given by x and the acres of land by y

then x= ky

for the expression to be correct the value of k should be thesame

when x= 720 and y = 4

k= x/y

k= 720/4= 180

when x= 1260 and y= 7

k= x/y

k= 1260/7

k= 180

therefore the x is directly proportional to y

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Answer:

Step-by-step explanation:

Volume is the quantity of three dimensional enclosed by a closed surface , for example , the space that a substance or 3D shape excipients or contains .Volume is often quantified numerically using the SI derived unit , the cubic metre.

It is true that the eigenvectors of the covariance matrix are equal to the principal components. Concretely, the first principal component (i.e. the largest eigenvector and associated largest eigenvalue) gives you the direction of the maximum variability in your data

The covariance matrix's eigenvectors are identical to its major components, which is a well-known fact. In more concrete terms, the direction of the most variability in your data is provided by the first principal component, which is represented by the largest eigenvector and related largest eigenvalue. After that, each primary component provides you decreasingly variable output. The fact that each primary component is orthogonal to the others is also important to note.

The above picture was taken from the Principal Component Analysis article on Wikipedia, which I previously referred to. This is a scatter plot of samples having a bivariate Gaussian distribution with a center at (1,3), a standard deviation of 3 roughly in the (0.878, 0.478) direction, and a standard deviation of 1 roughly in the orthogonal direction. The first principal component is the one with a standard deviation of 3, and the second is the orthogonal component. The shown vectors are the eigenvectors of the covariance matrix scaled by the relevant eigenvalue's square root and moved to place their tails at the mean.

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Now,

The cube root of 7 = 7^1/3

= 1.912

I hope it's help you...

Mark me as brainliest...

Answer:

68 percent

Step-by-step explanation:

Answer:

68%

Step-by-step explanation:

Here are the true/false answers to the given statements:• If G is an n-vertex disconnected graph with n 2 edges, then G is planar. - FALSE• If G contains only one cycle, then G is planar. - TRUE• If HC G, then

x(H) ≤ x(G) - TRUE•

If G is an n-vertex graph having k components of odd vertices, then the matching number of G is at most n-k 2 -  If G is a disconnected graph with n vertices and at least n + 2 edges, then G is not a planar graph. Hence the given statement that "If G is an n-vertex disconnected graph with n 2 edges, then G is planar" is false. A graph G is planar if and only if every face of G is bounded by a cycle in G. So, a graph G that contains only one cycle is planar. Hence the given statement that "If G contains only one cycle, then G is planar" is true. The independence number α(G) of a graph G is the size of a maximum independent set in G.

If H is a subgraph of G, then x(H) is called the chromatic number of H. By Brooks' Theorem, if G is a connected graph that is neither a complete graph nor an odd cycle, then

x(G) ≤ Δ(G), where Δ(G) is the maximum degree of G. So, if HC G,

then x(H) ≤ x(G) is true. A matching in a graph is a set of edges such that no two of them share a common vertex. A maximum matching is a matching that contains the largest possible number of edges. So, if G is an n-vertex graph having k components of odd vertices, then the matching number of G is at most n-k 2 is true.

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Answer:

301 plates

Step-by-step explanation:

For numbers between 0 and 9, 1 plate was used each.

This means that 10 plates were used.

For numbers between 10 and 99, 2 plates were used for each.

This means that the number of plates used will be:

2 * 90 = 180 plates

For numbers between 100 and 136, 3 plates were used for each.

This means that the number of plates used is:

3 * 37 = 111 plates

The total number of plates used is therefore:

10 + 180 + 111 = 301 plates

301 plates were used in total.

Expression equivalent to \(\sqrt {-80}\) :

Answer:

x = 3

Step-by-step explanation:

2.5/x = 10/12

Multiply both sides by x

2.5 = 10/12x

Divide both sides by 10/12

3 = x

Answer:

20 or B)

Step-by-step explanation:

88-30= 58

58-38= 20

Jerry sold 20

Hope this helped.

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