Is 2/7 a rational number?

What is its decimal expansion?

Answer:

-2 =x

Step-by-step explanation:

2 (x + 3 )= -x⁣

Distribute the 2

2x+6 = -x

Subtract 2x from each side

2x+6-2x = -x-2x

6 = -3x

Divide each side by -3

6/-3 = -3x/-3

-2 =x

Answer:

x = -2

Step-by-step explanation:

2 (x + 3) = -x

2x + 6 = -x

    - 6     -6

2x = -x - 6

+x    + x

3x = -6

---    ----

3      3

x = -2

Answer:

Answer:

AB=24.5

Step-by-step explanation:

5x+7=7x

7=2x

x=3.5

7(3.5)=24.5

Answer:

[tex]\boxed {\boxed {\sf 3060 \textdegree}}[/tex]

Step-by-step explanation:

The sum of a polygon's interior angles is found using this formula:

[tex]180 \textdegree (n-2)[/tex]

where n is the number of sides. This polygon has 19 sides.

[tex]n=19[/tex]

[tex]180 \textdegree*(19-2)[/tex]

[tex]180 \textdegree*(17)[/tex]

[tex]3060 \textdegree[/tex]

The sum of the interior angles is 3,060 degrees.

Answer:

The fucntion of number one exchange

Step-by-step explanation:

I took the iready and got 100%

Answer:

the answer is

a^2 + b^2 = c^2

5^2 + b^2 = 13^1

25 + b^2 = 169

b^2 = 144

b = 12  

or

The ladder is the hypotenuse, and the two legs are distance from the wall and height of the wall. If it is moved 5 feet away, it will reach 12 feet high, for 5^2+12^2=13^2.

Step-by-step explanation:

Answer:

the answer is no

Step-by-step explanation:

im not writing an essay sorry

Answer:

20% Chance he will choose a red card.

Answer: 50% chance that he will flip a tails and

33.3% chance of picking red

Step-by-step explanation:

Answer:

-3 > -8

-4 < 10

0 > -1

-5 = -5

Step-by-step explanation:

one is bigger than the other hopes this helps

Answer:

soh cah toa

to find a use sin =opp/hyp

sin 32=opp or a /hyp

sin 32*hyp=9.53

then to find b you can pythagorean theorem or just use cah or cos =adj/hyp

same process as above only using cos instead of sin

you get 15.3

then a^2+b^2=c^2

9.53^2+15.3^2=18^2 just to check or to use to find either a or b given c and either a or b

Step-by-step explanation:

Answer:

Step-by-step explanation:

They are both 25.

Why because in a 45, 45, 90 triangle the formula to find the three sides is a, a, a√2.

Answer:

$360

Step-by-step explanation:

Convert 15% to decimal by dividing 15 by 100 to get 0.15

Multiply 2400 and 0.15 which gets us 360.

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer: Rate of change is 35 miles per hour

Step-by-step explanation:

Miles at 10 hours: 350

Answer:

slope 70 i belive

10 hours 350

Step-by-step explanation:

Answer: 234

Step-by-step explanation:

Answer:

7.5

Step-by-step explanation:

mean= sum all/number of all

(2+8+6+8+6+8+10+12)/8=

60/8=7.5

Answer:

10%

Step-by-step explanation:

Answer:

10% of the pupils have not finished their assignment.

Step-by-step explanation:

3/30 kids have not finished their assignment.

3/30 = 1/10 = 10/100 = 10%

Hope this helps!

From V

Answer:

The equation is to solve this is: 600t + 100c is greater than or equal to 11000

Step-by-step explanation:

Answer:

600t + 100c > 11000

Step-by-step explanation:

got it right on delta math hope this helped

Answer:

4.66666667

Step-by-step explanation:

Answer:

Lesser = -490

Greater x = 100x

Step-by-step explanation:

The zeros is basically the opposite numbers to make the equation equal to 0.

We have -10x^2(I believe it's a power)

and we have + 490

so,

-10x^2 = -100x

So the opposites to make those is:

+ 100x because, -100x + 100x = 0

and -490 because, 490 - 490 = 0.

Answer:

w > 2

Step-by-step explanation:

Answer:

w>2 I hope it helps you!

Answer:

If i did my math correctly, It should be 3 ppl

Step-by-step explanation:

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

The height [tex]h(t)[/tex] of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation [tex]h(t) = 3 +90\cdot t -16\cdot t^{2}[/tex], where [tex]t[/tex] is time in seconds. After how many seconds will the ball be 84 feet above the ground.

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

[tex]3+90\cdot t -16\cdot t^{2} = 84[/tex]

[tex]16\cdot t^{2}-90\cdot t +81 = 0[/tex] (1)

By Quadratic Formula:

[tex]t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}[/tex]

[tex]t_{1} = 4.5\,s[/tex], [tex]t_{2} = 1.125\,s[/tex]

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Answer: x - 4

The missing dimension of the prism is A

because the volume of the rectangular prism equals the product of the sides, we have:

V = (x - 1)(x - 3)A

but V = x³ - 8x² + 19x - 12

=> x³ - 8x² + 19x - 12 = (x - 1 )(x - 3)A

⇔ x²(x - 1) - 7x(x - 1) + 12(x - 1) = (x - 1)(x - 3)A

⇔ (x² - 7x + 12)(x - 1) = (x - 1)(x - 3)A

⇔ (x² - 3x - 4x + 12)(x - 1) = (x - 1)(x - 3)A

⇔ (x - 3)(x - 4)(x - 1) = (x - 1)(x - 3)A

⇒ A = x - 4

Step-by-step explanation:

Answer:

11 cm

Step-by-step explanation:

the other two choices are too short

If 30 is the hypotenuse, the other two sides must exceed 30.

Answer:

C-11cm

Step-by-step explanation:

The sum of two sides of a triangle must always be bigger than the third!

3+20 is less than 30

6+20 is less than 30

11+20 is greater than 30!

Hope this helps :)

Answer:

C

Step-by-step explanation:

First we need to find W. You can do that by dividing 47.25 by 5.25.

47.25 / 5.25 = 9

So W = 9.

Now we do both equations to see which one is correct.

Equation A: 3/4 × 9 = 6 3/4, which is true.

Equation B: 9 - 10.24 = -1.24, which is also true.

Therefore, both equations give you the same solution, C.

Answer:

A) 8

Step-by-step explanation:

Answer:

Divide by 80 on both sides

Answer:

- g - 6 ≤ 10.5

Step-by-step explanation:

Answer:

-g-6 is less than or equal to 10.5

Step-by-step explanation:

replace the g with 5.