please help me with kahn academy

Answer:

3x^2-6x+3=0

x^2-2x+1=0

x^2-x-x+1=0

x(x-1)-(x-1)=0

(x-1)(x-1)=0

x=1,1

so x has only one answer

so it intersects only one time

Answer:

32

Step-by-step explanation:

18 +2(7).

2 x 7 = 14

18 + 14 = 32.

Answer:

1:x=4

2:-4/3

Step-by-step explanation:

Answer:

[tex]V=V_{1}+V_{2}=96+36=132\: cm^{3}[/tex]

Step-by-step explanation:

We can divide it into two parts:

First, we can fin the volume of the parallelepiped:

h1 = 16 cm

w1 = 2 cm

d1 = 3 cm

[tex]V_{1}=h_{1}*w_{1}*d_{1}=16*2*3=96\: cm^{3}[/tex]

Now, the volume of the second parallelepiped is:

h2 = (8-2) cm = 6 cm

w2 = 2 cm

d2 = 3 cm

[tex]V_{2}=h_{2}*w_{2}*d_{2}=6*2*3=36\: cm^{3}[/tex]

Finally, the total volume will be the addition of these two volumes.

[tex]V=V_{1}+V_{2}=96+36=132\: cm^{3}[/tex]

I hope it helps you!

Answer:

h = 2.5 in

Step-by-step explanation:

v = bwh

20 = 2x4xh

h = 2.5 in

Answer:

b.

Step-by-step explanation:

Answer:

45/5 or 45

Step-by-step explanation:

5x9=45   45/9=9

so therefore there are 45 , 1/5 in 9

The number of times a fraction number 1/5 is present in the integer number 9 will be 45 times.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The number of times a fraction number 1/5 is present in the integer number 9 is calculated by the division of the number 9 by the fraction number 1/5. Then we have

⇒ 9 / (1/5)

⇒ 9 x 5

⇒ 45

The number of times a fraction number 1/5 is present in the integer number 9 will be 45 times.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Answer:

Option C (on the example above) which is q(x)=4(0.5)^x+3

Step-by-step explanation:

Answer:

23:18 23 to 18 23/18

Step-by-step explanation:

So really there is no step by step process. You just need to know the ways to write ratios!

Hope this helps!!

Answer:

(3a + 2)(a + 3)

Step-by-step explanation:

Answer:

The answer is 9

Step-by-step explanation:

Multiplying by 1/72 is the same as dividing by 72. When you multiply 648 by 1/72, think of it as multiplying

[tex]\frac{648}{1}[/tex] x [tex]\frac{1}{72}[/tex] which equals...[tex]\frac{648}{72}[/tex]. If you have a calculator, at that point, you can just divide 648 by 72. If not, you can use standard division.

Hope this helps!

Answer:

The two trains are closing the initial distance between that of 280 miles by the sum of their two speeds. 80mph + 60mph = 140 mph. With the speed that the distance between the trains is closing, we can divide the starting distance to find out the number of hours until the trains pass. 280 miles / 140 mph = 2 hours. Since the trains left at 3:00 and will pass each other in 2 hours, they will pass each other at 5:00.

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

1 times 3 + 12 times 3 = 39

Answer:

39 maybe

Step-by-step explanation:

12×3=36

3×1=3

36+3=39

Answer:

52.36%

Step-by-step explanation:

First, you need to find the radius of the circle. You can do this by using the Pythagorean theorem, which states a^2+b^2=c^2. In this case, a and b are equal to 1.2 and 1.6, and c is the radius of the circle. Plugging in we get 1.2^2+1.6^2=c^2 or 1.44+2.56=c^2 or 4=c^2. Finding the square root of both sides of the equation, we find that 2=c. Now that we have the radius, we can find the area of the circle. The area of a circle is expressed as πr^2, and plugging in 2 for r we get an area of 4π, or ~12.56637. Now all we do is divide 12,56637 by 24 and get what percentage of the area of the triangle the circle covers, which is roughly 0.5236, or 52.36%

Answer:

a^2-12a+36

Step-by-step explanation:

;)

Answer: 3/4

Step-by-step explanation:

1/6 = 2/12

2/12 + 1/12 (the brother and the mom’s pieces) = 3/12->1/4

1 - 1/4 =3/4

Answer:

B. The 5-year term would be $ 1,186.80 lower

Step-by-step explanation:

The repayment parameters of the $10,000 loan Trey qualifies for are given as follows;

The loan interest rate = 4.29%

The monthly payments for the 5 year loan term = $185.48

The monthly payments for the 10 year loan term = $102.63

The total repayment amount for the 5 year loan term, '[tex]A_{5 \ years}[/tex]' is given as follows;

[tex]A_{5 \ years}[/tex] = $185.48 × 5 × 12 = $11,128.8

While the total repayment amount for the 10 year loan term, '[tex]A_{10 \ years}[/tex]' is given as follows;

[tex]A_{10 \ years}[/tex] = $102.63 × 10 × 12 = $12,315.6

The difference between the total repayment for the 10-year term and the 5-year term loan, [tex]A_{10 \ years}[/tex] - [tex]A_{5 \ years}[/tex], is given as follows;

[tex]A_{10 \ years}[/tex] - [tex]A_{5 \ years}[/tex] = $12,315.6 - $11,128.8 = $1,186.80

Therefore, the 5-year term is lower than the 10-year term by $1,186.80

Answer:

yes, it is true because a supplimentary angle is 180 degrees and if their is an acute angle then it is less than 90 degrees which means you subtract that by 180 and you get a number over 90 and an obtuse angle is over 90 which means the other side of the acute angle is obtuse. And the suppliment to an acute angle is always over 90 degrees

Hope it helps!

can I get brainliest?

Answer:

Hello.....

15/5

Step-by-step explanation:

thanks

Answer:

3

Step-by-step explanation:

here's your solution

=>. first u have to find out the root of 225

which is 15

=> and also root of 15 which is 5

=> now,we have to divide 15 by 5

=> hence, answer is 3

hope it helps

Answer:

The two numbers are 18, and 81.

step-by-step explanation:

If you divide both sides of the ratio by 2 to get 4.5/1, you can then graph that as y=4.5x, finally you just find two numbers that have a difference of 63, which in this case is 18, and 81.

Answer:

Step 2

Step-by-step explanation:

Janet replaced 43 from 12 out of nowhere, and there is nothing in the problem indicating that 43 should be changed into 12.

Answer:

  (d)  80 square units

Step-by-step explanation:

As with many composite area problems, this can be worked any of several ways. The attached shows trapezoid ABCE, from which triangle CDE can be removed to get the desired area.

The relevant formulas are ...

  A = (1/2)(b1 +b2)h . . . . . . area of a trapezoid

  A= (1/2)bh . . . . . . . . . . . . area of a triangle

__

Here, the trapezoid has bases 12 and 2, and height 12, so its area is ...

  A = (1/2)(12 +2)(12) = 84 . . . . square units

The triangle has a base of 4 and a height of 2, so its area is ...

  A = (1/2)(4)(2) = 4 . . . . square units

Then the area of the desired figure is ...

  84 - 4 = 80 . . . . square units

Answer:

D

Step-by-step explanation:

The .87 represents that the new value is 87% of the previous value, thus decaying exponentially. B decays linearly and the other two are exponential growth functions.

Answer:

8 x 8 x 8 x 8 = 4096

Step-by-step explanation:

Its an exponent which means you multiply 8 by itself 4 times to get 4096.

Answer:

answer is 1

Step-by-step explanation:

Let's solve your equation step-by-step.

2g−(−1)=3

Step 1: Simplify both sides of the equation.

2g+1=3

Step 2: Subtract 1 from both sides.

2g+1−1=3−1

2g=2

Step 3: Divide both sides by 2.

2g/2 = 2/2

g=1

Answer:

-3071/16

Step-by-step explanation:

Hope this helps, if you wrote it wrong or need help understanding please let me know!