What number decreased by 3.5 equals 12.7?

Answer:

no, no, yes, no

Step-by-step explanation:

Starting with <EDG=43

You need to find <CDF. AB is a straight line, making it 180.

ADC=90 and FDB=20

180-90-20 to get CDF

70=CDF 70 doesnt equal 43

CDF and EDG are not congruent.

Find EDA. GC=180 ADC= 90 EDG=45

180-90-45

45

you can also see that ADC and EDG are adjacent angles and if you look, GDA makes up a right angle which is 90 so you could subtract the 45 from that to get 45 as well.

ADB=180

45+133=178

no

We already figured out that CDF=70

70+20=90 so yes.

BDG is obviously a right angle but looks can be deceiving so math wise

AEG is 90 and AB is 180

180-90=90

so BDG is 90

20+90+43=180

155=180

no

Answer:

Your answer option is B) (2,2)

Answer:

Step-by-step explanation:Coordinate geometry is one of the most important and exciting ideas of mathematics. In particular it is central to the mathematics students meet at school. It provides a connection between algebra and geometry through graphs of lines and curves. This enables geometric problems to be solved algebraically and provides geometric insights into algebra.

The invention of calculus was an extremely important development in mathematics that enabled mathematicians and physicists to model the real world in ways that was previously impossible. It brought together nearly all of algebra and geometry using the coordinate plane. The invention of calculus depended on the development of coordinate geometry.

Answer:   C. Amy used the incorrect inequality symbol. The solution set should be [1.25, ∞)

Step-by-step explanation:

Answer:

Amy used the incorrect inequality symbol. The solution set should be [1.25, ∞).

Step-by-step explanation:

edge

Answer: 10 1/2 miles

1 hour= 5 miles

2 1/2 hrs = 10 1/2 miles

Answer:

62.44

Step-by-step explanation:

Line up the decimals and then add them up like usual, and then place the decimal where it should go. THen you get your answer.

Hope this helped!

Answer:

62.44

Step-by-step explanation:

line the decimals up

57.42

+1.02

58.44

now add 4

58.44

+4.00

62.44

Answer:

Quadrants I and II.

O: (-2, 2)

N: (-2, 4)

M: (1, 4)

P: (1, 2)

Step-by-step explanation:

When rotating about the origin 90 degrees in a counterclockwise direction, focus on the coordinates of one point on the preimage at a time. So, the x-coordinate on the image will be the opposite of the y-coordinate of the preimage, and the y coordinate of the image will be the x-coordinate of the preimage. That sounds complicated so here is an example from the problem.

O is a point on the preimage. Its coordinates are (2, 2). To find the x-coordinate, take the opposite of the image's y-coordinate. The y-coordinate is 2, so it will be a -2 x-coordinate on the image. To find the y-coordinate on the image, take the x-coordinate of the preimage (O). The x-coordinate of O is 2, so the y-coordinate of the image will be 2. Combine those together and after a 90 degree counterclockwise rotation, you get a point of (-2, 2)

Answer:

Step-by-step explanation:

when rotate counterclock wise 90 degrees:

(x,y)⇒(-y,x)

points                            (2,2)        (4,2)          (2,-1)          (4,-1)

CCW90 degrees           (-2,2)      (-2,4)         (1,2)           (1,4)

CCW 270 degrees        (2,-2)       (2,-4)        (-1,-2)         (-1,-4)

(x,y)⇒(y,-x)   the shape will be in quadrant 3 and 4

Answer:

9.0×10^3K/moles

Step-by-step explanation:

ionization energy of these electrons = Energy of photons - kinetic energy of the electrons

Given

Kinetic energy of electron = 1.34×10^5

Energy of photons = 1.43 x 105 kJ/mole

Required

Ionization energy of these electrons

Ionization energy of these electrons = 1.43×10^5-1.34×10^5

ionization energy of these electrons = 0.09×10^5 kJ/mol

= 9.0 × 10^3 kJ/mol

Hence the ionization energy of these electrons is 9.0×10^3K/moles

Answer is A .

Explaination = 4x+12 < ( i cant type it with a line below but remember it has it)  -8                    

Answer:

2. Georgia colony

3. Massachusetts Bay Colony

4.   New York

5. Charter of Pennsylvania

6. May 4, 1776

7. Swedes colony

8. Rhode Island colony and Connecticut colony

9. New York

10. Plymouth colony

11. Maryland and Virginia colony were both founded in 1776

12. 1732 - 1215 = 517

Hope this helps, could sure use brainliest after this:)

Answer:

thank YOU

Step-by-step explanation:

Answer:

BET LETS GO

Step-by-step explanation:

In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line. The slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between any two distinct points on a line.

Answer:

y = 2x + 1

Step-by-step explanation:

Slope formula is y2-y1/x2-x1

-5-3/-3-1

-8/-4

2

Thus, the slope is 2 (m = 2)

Find the y intercept.

y = 2x + b

3 = 2(1) + b

3 = 2 + b

1 = b

y = 2x + 1

Best of Luck!

Answer:

77

Step-by-step explanation:

Add all the numbers up, then divide it by how many numbers there are in the set.

Answer:58?

Step-by-step explanation:

[tex](2x + 12)^{\circ} + 32^{\circ} = 90^{\circ}\\2x + 12^{\circ} + 32^{\circ} = 90^{\circ}\\2x = 90^{\circ} - 12^{\circ} - 32^{\circ}\\2x = 46^{\circ}\\x = 23^{\circ}[/tex]

Answer:

  I. APY = (1 +r/n)^n -1

  II. 4.0474%

  III. 4.0487%

  IV. 4.0398%

  V. Account B

Step-by-step explanation:

I. The expression is ...

  APY = (1 +r/n)^n -1

__

II–IV. See the attached. (When calculations are tedious and repetitive, a spreadsheet is helpful.)

__

V. The account compounded quarterly has the highest APY, account B.

Answer:

x = 1

Step-by-step explanation:

first you distribute :  3(x + 1) -> 3x  -2(x - 1) -> -2x + 2

next you combine like terms : 2 + 6 = 8

3x + 3 = -2x + 8

subtract 3 from both sides : 3x = -2x + 5

add 2x to both sides : 5x = 5

divide both sides by 5 and you get :  x = 1

Hope this helps :")

Answer:   16

============================================

Explanation:

The full expanded expression is 4x^2-16x+16

Which you can get through these steps

(2x-4)^2

(2x-4)(2x-4)

y(2x-4) ...... let y = 2x-4

2xy - 4y

2x( y ) - 4( y )

2x( 2x-4) - 4( 2x-4 ) .... plug in y = 2x-4

4x^2 - 8x - 8x + 16

4x^2 - 16x + 16

The question is an illustration of expansion and factorization.

The last term of the expression is 16.

We have:

[tex](2x - 4)^2[/tex]

Expand

[tex](2x - 4)^2 = (2x - 4) \times (2x - 4)[/tex]

Further expand

[tex](2x - 4)^2 = 2x(2x - 4) - 4(2x - 4)[/tex]

Open brackets

[tex](2x - 4)^2 = 4x^2 - 8x - 48x + 16[/tex]

[tex](2x - 4)^2 = 4x^2 - 56x + 16[/tex]

Hence, the last term of the expression is 16.

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Answer:

D- The x-intercept is (-3,0), and the y-intercept is (0,12).

Step-by-step explanation:

right on plato/edmentum

The solution is Option D.

The x-intercept is ( -3 , 0 ), and the y-intercept is ( 0 , 12 )

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of the line be f ( x ) = y

And , the equation is

f ( x ) = 4x + 12

So , y = 4x + 12

To find the x intercept of the line ,

Substitute the value of y = 0

So , 0 = 4x + 12

Subtracting 12 on both sides , we get

4x = -12

Divide by 4 on both sides , we get

x = -3

Therefore , the x-intercept is ( -3 , 0 )

Now , To find the y intercept of the line ,

Substitute the value of x = 0

So , y = 12

Therefore , the y-intercept is ( 0 , 12 )

Hence , The x-intercept is ( -3 , 0 ), and the y-intercept is ( 0 , 12 )

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Answer:

32 degrees

Step-by-step explanation:

If lines r and t are parallel then it would be 180-148

Answer:

C

Step-by-step explanation:

We know that the volume of a cylinder is given by the formula:

[tex]V=\pi r^2h[/tex]

And we want to find the expression that represents the volume when the radius is (x+8) and the height is (2x+3).

So, let's substitute (x+8) for r and (2x+3) for h. This yields:

[tex]V=\pi (x+8)^2(2x+3)[/tex]

Let's expand.

Expand the square term first. We can use the perfect square trinomial pattern, which is:

[tex](a+b)^2=a^2+2ab+b^2[/tex]

Here, our a is x and b is 8. So:

[tex]V=\pi (x^2+2(x)(8)+(8)^2)(2x+3)[/tex]

Simplify:

[tex]V=\pi (x^2+16x+64)(2x+3)[/tex]

Expand further. This time, we will use the distribute property. So:

[tex]V=\pi ((x^2+16x+64)(2x)+(x^2+16x+64)(3))[/tex]

Multiply:

[tex]V=\pi((2x^3+32x^2+128x)+(3x^2+48x+192))[/tex]

Combine like terms:

[tex]V=\pi((2x^3)+(32x^2+3x^2)+(128x+48x)+(192))[/tex]

Add:

[tex]V=\pi(2x^3+35x^2+176x+192)[/tex]

Distribute the π:

[tex]V=2\pi x^3+35\pi x^2+176\pi x+192\pi[/tex]

So, our answer is C.

And we're done!

Answer:

C

Step-by-step explanation:

V=πr²h

V=π(x^2+64)h

V=π(x^2+64)(2x+3)

V=π(2x^3+3x^2+128x+192)

C: 2πx³+ 35πx²+176πx+192π

Answer:

See below.

Step-by-step explanation:

The converse of the Pythagorean Theorem tells us that if the sum of the square of the two shorter lengths is equivalent to the square of the longest length, then the triangle is indeed a right triangle.

We have the side lengths (x²-1), (2x), and (x²+1).

We can see that our hypotenuse will be (x²+1), since it will always yield the largest value for x.

So, we can use the Pythagorean Theorem:

[tex]a^2+b^2=c^2[/tex]

Substitute (x²-1) and (2x) for a and b, and substitute (x²+1) for c:

[tex](x^2-1)^2+(2x)^2\stackrel{?}{=}(x^2+1)^2[/tex]

Square each expression:

[tex](x^4-2x^2+1)+(4x^2)\stackrel{?}{=}(x^4+2x^2+1)[/tex]

Combine like terms:

[tex]x^4+(-2x^2+4x^2)+1\stackrel{?}{=}(x^4+2x^2+1)[/tex]

Add:

[tex]x^4+2x^2+1\stackrel{\checkmark}{=}x^2+2x^2+1[/tex]

We can see that the resulting equations are equivalent, proving that the triangle is indeed a right triangle.

And we're done!

Sorry.. Good Luck with the answer tho!...

(a)The population of the city after 30 years will be 463708.566 as per exponential growth.

(b) The value of the exponential 'r' is 4.5%.

"Exponential growth is a process that increases quantity over time."

Here, f(x) = a(1 + r)ˣ

f(x) = exponential growth function

a = initial amount

r = growth rate

x = number of time intervals

(a)The population of the city is (A) = 256,000.

The rate of increase of population per year is (r) = 2% = 0.02.

Time period (n) = 30 years.

Therefore, the population after 30 years

= A(1 + r)ⁿ

= 256000(1 + 0.02)³⁰

= 463708.566

(b) Let, the total bacteria is x.

The rate of increase of bacteria per day is = r%

Time period (n) = 32 days.

Total increased in bacteria in 32 days = 309%.

After 32 days, the total number of bacteria is

= x + (x × 309/100)]

= x + 3.09x

= 4.09x

Therefore,

4.09x = [tex]x(1 + r)^{t}[/tex]

⇒ [tex](1 + r)^{32}[/tex] = 4.09

⇒ (1 + r ) = 1.045

⇒ r = 0.045

⇒ r = 4.5%

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Answer:

4

Step-by-step explanation:

The Significant Figures are 9 8 0 7

Answer:

the answer is 6a^2- 3ax+ 3a

Answer:

11

Step-by-step explanation:

W^7/W^-2=W^7+2=W^9 ( when divide subtract the exponent (7-(-2))

W^?/W² = W^?-2

W^9=W^(?-2)

9=?-2

?=11

W^7/W^-2 = W^11/W²

Answer:

11

Step-by-step explanation:

totally didnt look at someone elses answer ;)

Answer:

9

Each value is 3 times the number on the ratio.

10 x 3 = 30.

So, the ratio for oranges would be 9 because:

3 x 3 = 9.

So, the answer is 9.

Answer:

i hope it helps

Step-by-step explanation:

0.000074

Explanation:

7.4

×

10

−

5

To write in standard notation, move the decimal point on

7.4

over as many times as the power of ten given.

Move to the left if the given power has a negative exponent

Move to the right if the given power has a positive exponent

Therefore:

7.4

×

10

−

5

=

0.000074