What is the value of x in log2 (x) – 3 = 1?

Answer:

x= 3, y= -1

Step-by-step explanation:

Let's solve your system by substitution.

2x−5y=11 and −2x+3y=−9

Solve x in 2x-5y=11

2x-5y=11 (add 5y to both sides)

2x = 5y + 11 (divide 2 by both sides)

x=5/2y + 11/2

substitute 5/2y+11/2 for x in -2x+3y=-9

-2x+3y=9

-2 (5/2y+11/2)+3y=-9

-2y-11=-9 (simplify both sides)

-2y-11=-9 (add 11 to both sides)

-2y=2 (divide both sides by -2)

y=-1

substitute your y (-1) in x = 5/2y + 11/2

x = 5/2y + 11/2

x=5/2(-1)+11/2

x=3

therefore, y= -1 and x = 3

Answer:

7. 12*(2+2^3)               8. 7^2+(1-5)*3

Answer:

35

Step-by-step explanation:

a negative and a negative equals a positive

Answer:

A

Step-by-step explanation:

wednesday thursday and friday amount to 60%

Answer:

16

Step-by-step explanation:

square root of 16 is 4, and 4^2 = 16

Answer:

16

Step-by-step explanation:

The square cancels out the square root.

Look at the attached picture ⤴

Hope it will help u....:)

Answer:

A. (x + 3)² - 2

B. (-3,-2); min

C. x = -3

Step-by-step explanation:

x² + 6x + 7

x² + 2(x)(3) + 3² - 3² + 7

x² + 2(x)(3) + 3² - 9 + 7

(x + 3)² - 2

Vertex: (-3 , -2)

It's a concave up, so minimum

Line of symmetry is x = h

x = -3

Upon calculating the volume of the given cylinder and comparing it with each option, it is determined that none of the provided cylinders have the same volume as the cylinder with a height of 32 meters and a diameter of 20 meters.

The question is asking which cylinders have the same volume as a cylinder with a height of 32 meters and a diameter of 20 meters. To find this out, we first calculate the volume of the given cylinder. The formula for the volume of a cylinder is[tex]V = \(\pi r^2h\)[/tex], where V is the volume, [tex]\(r\) i[/tex]s the radius of the base, and h is the height of the cylinder. In this case, the radius (half of the diameter) is 10 meters, so the volume is:

[tex]V = \(\pi (10)^2 \times 32\) = 320\(\pi\) cubic meters.[/tex]

Now, let's check each option:

Therefore, none of the provided options have the same volume as the given cylinder.

The cylinders with heights and diameters of 16 meters and 40 meters, and 128 meters and 10 meters, respectively, have the same volume as the given cylinder.

To find cylinders with the same volume as the given cylinder (height = 32m, diameter = 20m), we calculate its volume and compare it with the volumes of the listed cylinders. Cylinders with heights and diameters of 16 meters and 40 meters, and 128 meters and 10 meters, have the same volume as the given cylinder.

The question involves finding which cylinders have the same volume as a cylinder with a height of 32 meters and a diameter of 20 meters. To solve this, we first calculate the volume of the given cylinder using the formula for the volume of a cylinder, V = πr²h, where r is the radius (half of the diameter) and h is the height.

The volume of the given cylinder is V = π(10²)(32) = 320π cubic meters. We then apply the same formula to each of the listed cylinders, converting dimensions to the same units where necessary, to identify which ones have the same volume.

Therefore, the cylinders with heights and diameters of 16 meters and 40 meters, and 128 meters and 10 meters, respectively, have the same volume as the given cylinder.

Answer:

A B D F

Step-by-step explanation:

just did it

Answer:

Step-by-step explanation:

Answer: About 2.875 times more than a hummingbird

Step-by-step explanation: The way you can solve this problem is just by dividing 82,800 by 28,800. If you want to check your work multiply 28,800 and 2.875.

A bee flaps its wings approximately 3 times faster than a hummingbird.

Bee: 82,800 times/hour ≈ 8.3 × 10^4 times/hour

Hummingbird: 28,800 times/hour ≈ 2.9 × 10^4 times/hour

Now, let's compare the two estimates:

8.3 × 10^4 (bee) is approximately 3 times faster than 2.9 × 10^4 (hummingbird).

So, a bee flaps its wings about 3 times faster than a hummingbird.

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Answer:

area = base × height

substitute the value for the area and base and solve.

height = area ÷ base

Answer: 4(5) 20 5(4)

Step-by-step explanation: PERIOD

Answer:

B: 4(5)

C: 20

D: 5(4)

   Mark brainliest pls

Step-by-step explanation:

I got it correct on edge

Answer:

B      

y=7x +100

Step-by-step explanation:

$100 for one room

1 or more kids

$7 per kid

so, the answer is y= 7x + 100

Answer:

Option C is the correct answer.

Step-by-step explanation:

Since a random number generator is used to select a single number between 1 and 28, inclusively;

For a fair decision to be made during the process, the number of persons in the set must be a divisor of 28.

Let's list the divisors of 28:

The divisors of 28 are {1, 2, 4, 7, 14, 28}

The only option that contains one of the divisors is option C which is 7.

Answer:

2.4

Step-by-step explanation:

Answer:

To convert to a decimal, divide numerator by denominator.

To convert the decimal to a percentage multiply by  

100

%

Explanation:

5

12

=

0.416666

...

...

.

0.41666

...

.

.

×

100

%

=

41.66666

%

...

.

.

Rounding off to nearest percent gives

42

%

Step-by-step explanation:

Answer:

3.  1/2                4.    13/20

Step-by-step explanation:

Those are the only one I know, sorry :/

Answer:

Touches only.

Step-by-step explanation:

It only touches the curve at one point. The line is a tangent to the curve and does not cross it.

If you have a ball resting on a table the table is a tangent to the curve of the ball.

Answer: A. 330 m/s

Just took a test on it

Answer: A

Step-by-step explanation:

Answer: Is true sometimes.

Step-by-step explanation:

I guess that here we have two matrices, A and B, that are nxn.

We can see that if those matrices can conmutate, then we can try it with some simple matrices.

[tex]A = \left[\begin{array}{ccc}1&0\\0&-1\end{array}\right] . B = \left[\begin{array}{ccc}2&0\\1&1\end{array}\right][/tex]

Here, we would have that:

[tex]AB = \left[\begin{array}{ccc}2&0\\-1&-1\end{array}\right][/tex]

[tex]BA = \left[\begin{array}{ccc}2&0\\1&-1\end{array}\right][/tex]

You can see that AB and BA are different, then the statement is not always true.

But it is true sometimes, if A or B are the identiti, then I*A = A*I, in this case would be true.

It is also true if A and B are diagonal matrices, let's prove it:

[tex]A = \left[\begin{array}{ccc}a&0\\0&b\end{array}\right] , B = \left[\begin{array}{ccc}c&0\\0&d\end{array}\right][/tex]

[tex]AB = \left[\begin{array}{ccc}ac&0\\0&bd\end{array}\right] = BA[/tex]

Answer:

(-5, -2)

Step-by-step explanation:

3x+4y=-23

x=3y+1

since we have what x is, we need to subsitute

3( 3y+1) + 4y= -23

no we need to multiply the number inside the parenthesis by 3

9y + 3 + 4y= -23

combine like terms ( add the numbers or variables that look alike)

9y+4y is 13y

13y+3= -23

since we need to get the y alone we need to subtract 3 on both sides since its the opposite of adding

13y+3-3=-23-3

13y= -26

now we divide 13 on both sides to get Y alone

13y/13= -26/13

y= -2

now since we have y we need to substitute it to find x

x= 3y+1

x= 3( -2) +1

now we mutliply 3 with -2

x= -6 +1

x=-5

those are ur answers

y= -2

x= -5

hope this helped:D

Answer:

x = -5

y = -2

Step-by-step explanation:

The ratio of the perimeter of one face for the two cubes is 1/2, the ratio for the total surface area is 1/4, and the ratio for the volume is 1/8.

The student wants to find the ratios of the perimeter of one face, the total surface area, and the volume of two similar cubes having side length ratio of 1/2.

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Answer:

C. The set of all points in a plane for which the sum of the distances

to two fixed points equals a certain constant

C. The set of all points in a plane for which the sum of the distances

to two fixed points equals a certain constant is the best definition.

An ellipse is a curve formed by a plane, that intersects a cone at an angle with respect to the base. It is a curve surrounded by two focal points. Ellipse is a locus of points, the sum of whose distances from two foci is constant.

An ellipse is a circle that has been stretched in one direction, to give it the shape of an ova

An ellipse has an eccentricity less than one, and it represents the locus of points, the sum of whose distances from the two foci of the ellipse is a constant value. A simple example of the ellipse in our daily life is the shape of an egg in a two-dimensional form and the running tracking in a sports stadium.

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same. The elongation of an ellipse is measured by its eccentricity

An ellipse has a simple algebraic solution for its area, but only approximations for its perimeter (also known as circumference), for which integration is required to obtain an exact solution.

The standard equation for an ellipse, x 2 / a 2 + y2 / b 2 = 1, represents an ellipse centered at the origin and with axes lying along the coordinate axes. In general, an ellipse may be centered at any point, or have axes not parallel to the coordinate axes.

To learn more about Ellipse, refer

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Answer:

The system of equations as described:

y = (-3/4)x + 3

y = -12

Combining two equations, we have:

=> -12 = (-3/4)x + 3

=> -15 = (-3/4)x

=> x = -15 x (-4/3) = 20

=> Solution is (20, -12)

=> Option A is correct.

Hope this helps!

:)

Step By Step:

The equations given to us are:

y = (-3/4)x + 3

y = -12

Now that we have y we can change that to -12

-12 = (-3/4)x + 3

-15 = (-3/4)x

x = -15 x (-4/3) = 20

This would give us (20, -12)

Answer

Hope this helps

give brainliest if you please

Answer:

Chicago after 8 hrs it dropped to 8 degrees and at pittsburgh after 8hrs passed it reached to 8degrees outside

so after 8hrs the cities reached the same temperature which is 8degrees

Step-by-step explanation:

10-1=9 then 9-1=8

1= each degree that dropped every 4 hours

Answer:

you need to the prime number to get the sum for the distance between 1 and v.

Step-by-step explanation:

Natural numbers are what you use when you are counting one to one objects. You may be counting pennies or buttons or cookies.

If you want to find the numbers between the two you will need an expression to consolidate your question as an example 3r, 6y, 2by in order to find the Natural number between these three questions you need to use equations such as 3r*2by+6y therefore would be 6br + 2y.

A Prime number is a natural number of a particular kind . Any natural number is equal to 1 times itself.

3x + 18 = 147

3x = 129

x = 43

Answer:

3x + 18 = 147

Step-by-step explanation:

Answer:

C) 50x

D) x(75 - 25)

Explanation:

Use distribution to simplify:

x · 75 = 75x

x . 25 = 25x

75x - 25x

75x - 25x = 50x

Answer:

C and D

Step-by-step explanation:

75x - 25x

75 - 25 = 50

Write in terms of x

50x

Find the options that match this answer

a: 50 (not always equal to 50x)

b: 100 (not always equal to 50x)

c: 50x (always equal to 50x)

d: x ( 75 - 25 ) = x ( 50) = 50x (always equal to 50x)

C and D are equivalent to the answer, 50x

Hope this helps :)