Two fifths of the 40 students earned an A, what percent of the students earned an A

How to solve:

    Let's follow his process step-by-step to analyze what property is being used. The breakdown is as follows:

Jayden's work

Set up equation                                                     9(2 + 7x)

Step 1                                                                      9(7x + 2)

Step 2                                                                     9(7x) + 9(2)

Step 3                                                                      (9*7)x + 18

Breakdown

Set up equation                                                     9(2 + 7x)

Step 1: Commutative Property of Addition

This property states that when adding, the order of the numbers being added does not matter, and are therefore interchangeable.

Original equation: 9(2 + 7x)

Equation's formula: a(b + c)

Changed equation: 9(7x + 2)

Equation's formula: a(c + b)

By swapping the b and c values in the parentheses, Jayden is demonstrating the Commutative Property. Both will still produce the same sum.

Step 2: Distributive Property of Multiplication

This property states that the sum of two addends that are multiplied by the same number is equal to the product of that number multiplying the sum of both addends.

Original equation: 9(7x + 2)

Equation's formula: a(c + b)

Changed equation: 9(7x) + 9(2)

Equation's formula: a(c) + a(b)

By splitting the parentheses and multiplying each term separately, Jayden is demonstrating the Distributive Property. Both will produce the same product.

Step 3: Associative Property of Multiplication

This property states that the product of three terms, where one is outside of the parentheses multiplying the other two, is not affected by changing which term is on the outside of the parentheses.

Original equation: 9(7 * x) +18

Equation's formula: a(c*x) + (ab)

Changed equation: x(7*9) + 18

Equation's forumula: x(c*a) +18

By swapping the 9 and x variables, Jayden is demonstrating the Associative Property. Both will produce the same product.

Simplified:

Step 1 - Commutative Property

Step 2 - Distributive Property

Step 3 - Associative Property

Answer:

The length of the car affects how fast it travels down the ramp

Step-by-step explanation:

It does not tell us the length

The length of the car affects how fast it travels down the ramp cannot be concluded by the given table.

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

The mass of the car affects how fast it travels down the ramp can be concluded from the table given.

The car with more mass will travel the fastest down the ramp can be concluded from table or data given.

The length of the car affects how fast it travels down the ramp can not be concluded by the given data as there is no length given in the table.

The car with the least mass will travel slowest down the ramp also be concluded from the data.

Hence, the length of the car affects how fast it travels down the ramp cannot be concluded by the given table.

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Answer:

16.2 = [tex]\frac{81}{5}[/tex] and 121 = [tex]\frac{121}{1}[/tex]

Step-by-step explanation:

16.2 can be simplified to its fraction form, which is [tex]\frac{81}{5}[/tex]

121 is already simplified since it is a whole number, but its fraction form would be [tex]\frac{121}{1}[/tex]

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(I hope this helped & good luck! <3)

Answer:

y ≤ 0

Step-by-step explanation:

y ≤ 0

< or >: dashed line

≤ or ≥: solid line

≤ or <: shade below the line

≥ or >: shade above the line

Here we have:

a solid like (possibilities: ≤ or ≥)

shades below the line (≤)

Final answer, y ≤ 0

Hope this helps!

Answer:

The inequality is D) y is less than or equal to 0

Step-by-step explanation:

The yellow shaded area is on the 0 line and below it, making it less than or equal to 0.

-I hope this helps!

Answer:

y=2x

Step-by-step explanation:

We need to first find the slope. Lets get two points and apply the slope formula.

(1,2) and (2,4)

Rise: 2

Run: 4

Slope: 2

Then, lets use the standard way of showing a linear equation.

y=mx+b

y=2x+0

Answer:

its 8^8

Step-by-step explanation:

Answer:

112.9 cubic meters

Step-by-step explanation:

Formula for Sphere: (4/3) * π*r*3

Since the hemisphere is half of the sphere, plug in variables and multiply.

Answer:its a

Step-by-step explanation:beause i need points for free answers

Answer:

e

Step-by-step explanation:

Question A: Mai pumped 10 gallons out of her pool. This meaning she is taking out water or a negative sign. She does this in a period of 5 minutes.

The expression should be:

-10 / 5 = -2 | 10 / 5 = 2

so basically either -2 or 2

Question B: Tony added 3 fish to his pond each day for 21 days.

This meaning you have to multiply 3 x 21 or add 3 twenty-one times.

3 x 21 = 63 | 3 + 3 + 3 + 3 + 3 + 3 + 3...

Either method coming to a total of 63.

Answer:

A And D

Step-by-step explanation:

THOSE ARE THE CORRECT ANSWER.

Answer:

3units, 4units, 8 units and 12units, 6units, 4units. Aka A and D

Step-by-step explanation:

Answer:

Step-by-step explanation:

To find the value of x, isolate it on one side of the equation.

3/4x+9=3

First, subtract by 9 from both sides.

3/4x+9-9=3-9

Solve.

3-9=-6

Rewrite the problem down.

3/4x=-6

Multiply by 4 from both sides.

4*3/4x=4(-6)

Solve.

3x=-24

Then, you divide by 3 from both sides.

3x/3=-24/3

Solve.

Divide these numbers goes from left to right.

-24/3=-8

x=-8

Variables and negative signs should appear in the answer.

I hope this helps you! Let me know if my answer is wrong or not.

Answer:

x = -8

Step-by-step explanation:

Subtract 9 both sides:

⇒ 3/4x + 9 = 3

⇒ 3/4x + 9 - 9 = 3 - 9

Simplify the L.H.S and the R.H.S:

⇒ 3/4x = -6

Use cross multiplication:

⇒ 3x/4 = -6

⇒ 3x = -6 × 4

Simplify the R.H.S:

⇒ 3x = -6 × 4

⇒ 3x = -24

Divide 3 both sides:

⇒ 3x/3 = -24/3

⇒ x = -8

Answer:

uh

Step-by-step explanation:

You have to find how many different outcomes there are in all.

Bowl or Cone (2)

Ice Cream Flavors: Chocolate, Vanilla, and Strawberry (3)

Toppings: Chocolate syrup, Caramel, and Marshmallows (3)

(2)(3)(3) = 18

There are 18 different outcomes in all

Answer:

That's right, if that's what you're asking... Or I'm wrong, but good luck!

Step-by-step explanation:

Answer:

the answer  is infinity

Step-by-step explanation:

Answer:

-0.5

Step-by-step explanation:

Could I get a Brainliest?

Answer:

He owes $6.50.

Step-by-step explanation:

You didn't give that answer in the multiple choice answers, but yet there are four options and only two of them are different.

Answer:

92.5 square inches

Step-by-step explanation:

Area of square:

10 * 10 = 100 square inches

Area of right triangle:

(1/2) * 5 * 3 = 7.5 square inches

Area of figure:

100 - 7.5 = 92.5 square inches

Answer:

D) None of the above

Step-by-step explanation:

Let's use process of elimination!

A) Vertical angles are opposite angles formed by two intersecting lines. These two are adjacent, therefore rendering this statement false.

B) Complementary angles are two adjacent angles that add up to 90 degrees. There is no proof that m∠a+∠b=90°, therefore this statement is false.

C) Supplementary angles are two adjacent angles that add up to 180 degrees. Assuming A∈ED, this statement is false as well.

D) None of the answers above are correct.

Hope this helps! :D

<3

Answer: its ether a or b

Step-by-step explanation:

Answer:

ARIA= LxH/2
A= 21x8/2 = 168/2=84cm

Step-by-step explanation:

Answer:

84cm

Step-by-step explanation:

AREA= LxH/2

A= 21x8/2 = 168/2=84cm

Answer:

(x+13)/-7 = -4

Step-by-step explanation: ? or 15 if thats an answer

Answer:

c

Step-by-step explanation:

The surface area of the square pyramid is 1040 ft² in the given figure.

The total surface area of the given pyramid can be expressed as:

Surface area of a square pyramid = A + (1/2) p × s

where A is the base area, p is the perimeter of the base, and s is the slant height

As per the question, we have

length (l) = 20 ft

base perimeter (p) = 4l = 4 × 20 = 80 ft

base area (A) = l² = 20² = 400 ft²

slant height (s) = 16 ft

Substitute the values in the formula for surface area:

Surface area = 400 + 1/2 × 80 × 16

Surface area = 400 + 1280/2

Surface area = 400 + 640

Surface area = 1040 ft²

Thus, the surface area of the square pyramid is 1040 ft².

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Answer:

equation 3 is correct

Step-by-step explanation:

Answer:

Number 3 is true.

Step-by-step explanation:

Equation 1 is 823543, so that is incorrect.

Equation 2 equals 1, wrong.

Equation 3 is 1/49. 7 multiplied by itself (7 x 7) is 49. This is correct

Equation 4 is 1/33232930569601, nowhere near the answer.

Answer:

the answer is bag b because there is more cauculators

Step-by-step explanation:

Step-by-step explanation:

Let the number be x

10% of x = 15

10/100 × x= 15

⅒ × x = 15

x= 15×10

x=150

Answer:

75% of both days combined.

Step-by-step explanation:

75%= day 1 + day 2. (1 day =100%) 75%/200% 75/2=32.5/100

32.5%