An art teacher had 16 pieces of blue chalk, 14 pieces of red chalk, and 10 pieces of
yellow chalk. She randomly gives a piece of chalk to each student in her class. What is
the probability that the first student will receive a piece of clue chalk?

Answer:

Replace all occurrences of y with 2x−1 in each equation.

0=0

y=2x−1

Remove any equations from the system that are always true.

y=2x−1

Step-by-step explanation:

Answer:

x=5

y=-2

Step-by-step explanation:

I just took this!

Hope I helped

Answer:

15

Step-by-step explanation:

The Pythagorean's Theorem states that a^2 + b^2 = c^2, so 81 + 144 = 225, and 225 square rooted is 15.

Answer:

15

Step-by-step explanation:

So, to find the hypotenuse you must use the pythagreons theorm:

A^2+B^2=C^2

Now, we knowt hat A and B is the side lengths.(9 and 12)

The hyoptenuse is C.

So, lets plug in our values for A and B, and find C:

A^2+B^2=C^2

=

9^2+12^2=C^2

Now lets square each number except for C, since its a unknown value:

81+144=C^2

Now combine the 144 and 81:

225=C^2

Finally, square root both sides so C^2 becomes C:

15=C

So the answer for the hyotenuse is 15!

Hope this helps!

Step-by-step explanation:

[tex](A-B) = ( - 2, \: - 2, \: - 2, \: - 2)[/tex]

Answer:

720

Step-by-step explanation:

base on my previous learning.. Hope it helps.. correct me if im wrong..

Answer:

12.5%

Step-by-step explanation:

The spinner has 8 equal sections, numbered 1, 2, 3, 4, 5, 6, 7, and 8. The only number greater than 7 is 8. There is 1 number greater than 7.

P(greater than 7)  =  

1

8

Write your answer as a decimal. Then convert your answer to a percentage.

1

8

=  0.125  =  12.5%

P(greater than 7) = 12.5%

Answer:

5. We can already tell from the looks of it that she is using a different number for pi throughout her answers. Therefore it is C

6. 2 x 3.14 x 4.9 = 30.772 rounded would be 31, C is your answer.       *formula of circumference:* pi(3.14 or 22/7 whatever they tell you to use for pi) x 2(its just always there when finding circumference) x radius(half of diameter or already given radius)

7. Let's just find the value of X on the top.

51(given degree) + 90(right angle degree) + X = 180(straight line degree)

51 + 90 + x = 180

141 + x = 180

-141      -141

X = 39

39 is the same to x beneath so therefore the value of x is 39 degrees.

Answer:

2rootover5

Step-by-step explanation:

just use pythagoraus theorem

Answer:

x ≈ 4.5

Step-by-step explanation:

First, use the Pythagorean theorem to find the missing variable with side 8 and hypotenuse 10.

a² + b² = c²

a² + 8² = 10²

Square the variables

a² + 64 = 100

Subtract 64 from both sides.

a² = 36

Take the square root of both sides.

a = 6.

Now we can find the other triangle and we now know that one side is 4 and the hypotenuse is 6.

a² + b² = c²

x² + 4² = 6²

Square the variables.

x² + 16 = 36

Subtract 16 from both sides.

x² = 20

Square root. (refresh if you don't see this part.)

[tex]x=\sqrt{20}\\\text{Factor out a 2.}\\x=2\sqrt{5}[/tex]

Converted to decimal to the nearest tenth, the answer is

x = 4.5.

Now let's prove it.

[tex]a^2+b^2=c^2\\\text{Substitute variables.}\\(2\sqrt{5})^2+4^2=6^2\\\text{Factor the 2 in.}\\(\sqrt{20})^2+4^2=6^2\\\text{Square the variables.}\\20+16=36\\\text{Add.}\\36=36[/tex]

Answer:

1,100.05

Step-by-step explanation:

Answer:

100 feet would make the enclosure the longest

Step-by-step explanation:

The graph shows that at 100 feet the line is at its highest point.

Answer:

B

Step-by-step explanation:

Answer:

Each pencil was 3$

Step-by-step explanation:

the total amount spent is $29 and a magazine only cost $5 and she bought it pencils which brought the total to $29 the question is how much was each pencil.

The amount she spent on pencil is the total amount - $5 which is $29 - $5 which is $24 and we are told that she bought a total number of 8 pencils. the cost of each pencil will be 24/8 which is $3

Answer:

Muercury 3

Venus 6

Mars 2

pluto 5

Jupiter 1

Nucleus4

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

Answer:

Hello! answer: 186

7 3/4 × 2 × 12 = 186

Hope that helps!

Answer:

6

Step-by-step explanation:

Answer:

In this expression the highest degree of polynomials = 6 due to because see in the one of terms constains the power of x to be as 4 and y to be as 2 Therefore the highest degree of polynomials in all terms is 4+2 = 6

Hope it helps

Answer:

last one

Step-by-step explanation:

Answer:

D. -5-3

Step-by-step explanation:

Answer: c

Step-by-step explanation: layout B needs about 2.3m more fencing.

Answer:

C

Step-by-step explanation:

Answer:

step-by-step-explaination:

y=2.2

Answer:

Take the square root of each side of the equation to set up the solution for

x

(

3

x

−

5

)

2

⋅

1

2

=

±

√

19

Remove the perfect root factor

3

x

−

5

under the radical to solve for

x

.

3

x

−

5

=

±

√

19

The complete solution is the result of both the positive and negative portions of the solution.

Tap for more steps...

x

=

√

19

3

+

5

3

,

−

√

19

3

+

5

3

The result can be shown in multiple forms.

Exact Form:

x

=

√

19

3

+

5

3

,

−

√

19

3

+

5

3

Decimal Form:

x

=

3.11963298

…

,

0.21370035

…

The solutions of the of the equation are,

⇒ x = 3.12

⇒ x = 0.21

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The expression is,

⇒ (3x - 5)² = 19

Now,

We can simplify the expression for the solutions as;

⇒ (3x - 5)² = 19

Take square root both side,

⇒ √(3x - 5)² = √19

⇒ (3x - 5) = √19

Add 5 both side,

⇒ 3x - 5 + 5 = √19 + 5

⇒ 3x = √19 + 5

⇒ 3x = ± 4.36 + 5

⇒ 3x = 4.56 + 5

⇒ 3x = 9.36

Divide by 3;

⇒ x = 9.36 / 3

⇒ x = 3.12

And, 3x = - 4.56 + 5

3x = 0.64

x = 0.64/3

x = 0.21

Thus, The solutions of the of the equation are,

⇒ x = 3.12

⇒ x = 0.21

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ7

Answer:

A, D, F.

Step-by-step explanation:

Answer:I think the answer is  5/12.

Step-by-step explanation:

Sorry if I am wrong. :) but it should be correct.

Answer:

ans is 5 -¹⁸ thanks for asking

Answer:

y=7/4x–5/2

Step-by-step explanation:

You must find the slope first, let it be m

[tex]m = \frac{y2 - y1}{x2 - x1} \\ = \frac{8 - ( - 6)}{6 - ( - 2)} \\ = \frac{14}{8} \\ = \frac{7}{4} [/tex]

then insert tu the formula y=mx+c to find the c (c is the intercept of y axis) choose any point that you want. i use (6,8)

[tex]y = mx + c \\ 8 = \frac{7}{4} (6) + c \\ c = - \frac{5}{2} [/tex]

so the equation is

[tex]y = \frac{7}{4} x - \frac{5}{2} [/tex]

Answer:

1. Y = 1/2x + 2

2. X = 20 - Y = 12

Step-by-step explanation:

1. The other formulas clearly don't fit.

2. Simply fill in 20 for X and solve the formula.

Answer:

Step-by-step explanation:

D po hehe..tiwala lang

Answer:

The area is 51 units squared.

Step-by-step explanation:

Since you are finding the area of a triangle, you first start with 12 x 8.5 = 102.

Then, you divide 102 in half, since the shape is a triangle. So, 102 ÷ 2 = 51.

So the answer is 51 units squared.

Hope this helps!