To add 10 + 25 + 75, Damon first added 25 and 75. Which property did Damon use to add mentally?

A. Commutative Property of Addition
B. Distributive Property
C. Associative Property of Addition
D. Identity Property of Addition

Answer:

7/12

Step-by-step explanation:

1/4 +1/3

We need to get a common denominator of 12

1/4*3/3 = 3/12

1/3 *4/4 = 4/12

3/12+4/12 = 7/12

Answer:

The answer is 7/12.

Explanation:

1/3 = 4/12

1/4 = 3/12

4 + 3 = 7

Answer:

  11/10

Step-by-step explanation:

Your calculator will tell you that √58 ≈ 7.62 and √42 ≈ 6.48. The difference of these numbers is ...

  7.62 -6.48 = 1.14 ≈ 1.1

The difference is about 11 tenths.

_____

You should be able to count the divisions on the number line to arrive at this conclusion.

⇒ 1.2  is your answer.

Answer:

-38

Step-by-step explanation:

Answer:

The answer you should get is 9:3

Step-by-step explanation:

Answer:

The answer is C

Step-by-step explanation:

I just did it and got it right.

Answer:

8 acres of land they did not plant the corn.

Step-by-step explanation:

GIven:

There are 25 acres of land on a farm.

The owners planted corn on 68 percent of the land.

Now, to find the acres they did not plant the corn.

Total acres of land on the farm = 25 acres.

Rate of land owners planted the corn = 68%.

Now, to get the acres of land owners planted the corn:

[tex]68\%\ of\ 25\\\\=\frac{68}{100} \times 25\\\\=0.68\times 25\\\\=17\ acres.[/tex]

Thus, 3.4 acres of land owners planted the corn.

Now, to get the acres land owners did not planted the corn we subtract the acres of land owners planted the corn from the total acres of land:

[tex]25\ acres-17\ acres\\\\=8\ acres.[/tex]

Therefore, 8 acres of land they did not plant the corn.

Answer:

48

Step-by-step explanation:

tell me if im wrong pls

Answer:

Scalene Triangle

Step-by-step explanation:

If you mark the points on the graph, all three sides have different lengths and angles, therefor it is a scalene triangle.

It cannot be a right triangke bc there is no right angle, and no obtuse either so that crosses out obtuse as an option as well. In order to be an isoceles triangle it must have two sides of equal length, but it does not.

Answer:

The slope of the line on this graph is 1/2.

Step-by-step explanation:

From (-4, 0), go up 2 units to (-4, 2), then go right 4 units to (0, 2). So the slope of this line is 2/4 = 1/2.

Answer:

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

4x4 = 16

Answer:

A

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

5×3=15

7×3=21

Answer:

Step-by-step explanation:

a) The denominators of variable terms is 5 and 3

As both are prime, least common denominator = 5*3 = 15

b) The denominators of constant terms is 7 and 3

Least common denominator = 7*3 = 21

Answer:

50.24

Step-by-step explanation:

Take the diameter and multiply by 3.14 so 16 times 3.14

Answer:

State that the circunference of a circle is equal to:

[tex]C=\pi d[/tex], where C is the circumference and d is the diameter

So, once d = 16 in

Therefore, [tex]C=16\pi[/tex] in

Answer:

9.434 X 10^66

Step-by-step explanation:

2.34 X 10^65  +  9.2 X 10^66    (First, you have to manipulate the exponents to bring them to the same index, i.e. the same power)

We can say that 2.34 X 10^65 = 0.234 X 10^66

Now that the indexes are equivalent, we can proceed to add the two bases together.

0.234 X 10^66  +  9.2 X 10^66

= (0.234  +  9.2) X 10^66

= 9.434 X 10^66

The sum of [tex]\(2.34 \times 10^{65}\)[/tex]and [tex]\(9.2 \times 10^{66}\)[/tex] is[tex]\(9.434 \times 10^{66}\)[/tex]

When adding numbers in scientific notation, it's crucial to align their exponents. In the case of[tex]\(2.34 \times 10^{65}\)[/tex] and [tex]\(9.2 \times 10^{66}\),[/tex] they don't initially share the same exponent. To rectify this, we need to adjust the first number.

First, express[tex]\(2.34 \times 10^{65}\)[/tex]as [tex]\(0.234 \times 10^{66}\)[/tex], moving the decimal point one place to the left. Now, both numbers are in the form[tex]\(A \times 10^{66}\),[/tex]making them compatible for addition.

Next, add the coefficients:[tex]\(0.234 + 9.2 = 9.434\).[/tex]

So, the result is[tex]\(9.434 \times 10^{66}\).[/tex] This number is significantly larger than either of the original numbers. In essence, we're combining a quantity in the tens (0.234) with one in the tens of billions (9.2), resulting in a massive number in the tens of billions of billions (9.434) times 10 raised to the power of 66.

In practical terms, this means that if you were to multiply[tex]\(2.34 \times 10^{65}\)[/tex]by 10 and then add[tex]\(9.2 \times 10^{66}\)[/tex]to it, you would have [tex]\(9.434 \times 10^{66}\)[/tex] as your final answer. This demonstrates the remarkable flexibility and ease of handling extremely large numbers using scientific notation.

Learn more about Scientific Notation here:

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Step-by-step explanation:

Given

x = -2

Now

y = 3x - 2

= 3 * (-2 )-2

= -6 - 2

= -8

System #1

2x + 3y = 12   and  4x + 3y = 18

I'd use elimination on this one; we subtract equations and the 3y disappears,

2x = 6

x = 3

3y = 18-4x = 18 - 4(3) = 18 = 12 = 6

y = 2

System #2

y = 2x +1  and  y =-3x -2

Here I'd use elimination; we have two things equal to y, we eliminate y by setting the right sides equal to each other,

2x + 1 = -3x - 2

5x = -3

x = -3/5

y = 2x+1 = -1/5

check y=-3x -2 = 9/5 - 10/5 = -1/5, good

System #3

x = 2y + 5  and x + 3y = 25

Here I'd use substitution.   The first equation is for x in terms of y; if we substitute it into the second equation we'll just have an equation in y.

(2y + 5) +3y = 25

5y + 5 =25

5y = 20

y = 4

x = 2y+5 = 13

Answer:

6

Step-by-step explanation:

Answer:

180 degrees

Step-by-step explanation:

It is a half circle

Answer:

Step-by-step explanation:

When solving algebra, it is important the we follow the steps in correct order and check our answer at the end.

Step 1: Simplify by combining like terms

y = -x/2 + 5/4 + 8y = -25

Step 2: Substitute

y = -25

-25 = -x/2 + 5/4 + 8(-25)

-25 = -x/2 + 5/4 + -200

-25 = -x/2 - 198 3/4

Step 3: Answer

x = -347 1/2

Step 4: Check

y = 3/2x + 5/4 −2x + 8y = −25

-25 = 3/2(-347 1/2) + 5/4 −2(-347 1/2) + 8(-25)

-25 = -25✔️

Step 5: Verified Answer

x = -347 1/2

I'm always happy to help :)

Answer:

D

Step-by-step explanation:

The first unknown integer will be x. The second one will be y.

x^2 - xy = 100

This is the same one as

x^2 - xy - 100 = 0

Answer:

1/12 of the original

Step-by-step explanation:

If you split 1/4 into 3 equal pieces, then each friend gets 1/12 of the original cake

Answer:

b

Step-by-step explanation:

he payed 8.10$

bobby wasted 14.4 on the red ribbon

bobby wasted 6134.4  on yellow ribbon

together he wasted 6148.8

Answer:

$ 8.1

Step-by-step explanation:

To find 4 1/2 ft of cable wire you need to find what one foot of cable wire is which is $1.80.

So now add $1.80 four times:

1.80 + 1.80 + 1.80 + 1.80 =  7.20

It will cost $7.20 for four feet of cable wire

Now you have to do a half of $ 1.80

1.8 / 2 = 0.90

Now add 7.2 and 0.90 together

7.2 + 0.9 = 8.10

So Peter would need to buy $ 8.10 of cable wire for 4 1/2 ft.

d = kv

Substitute the 60 and 120 in.

120 = k * 60

k = 2

So, d = 2v

If v is 65, what is d?

2 * 65 = 130 miles

Final answer:

The distance Joseph travels before stopping for lunch varies directly with his speed. The equation that relates distance, d, and speed, v, is d = 2v. At a speed of 65 mph, Joseph would travel 130 miles before stopping for lunch.

Explanation:

Joseph's road trip scenario involves a direct variation between the distance traveled, d, and the speed, v, at which he travels. Since we know that he travels 120 miles at a speed of 60 mph, we can write the equation of direct variation as d = kv, where k is the constant of variation.

To find the value of k, we use the information given: d = 120 miles when v = 60 mph. So, we have 120 = k ×60.

To find k, we divide both sides by 60: k = 120 / 60 = 2. This tells us that the distance traveled varies with twice the speed. Thus, the equation relating d and v is d = 2v.

To determine how far Joseph would travel before stopping for lunch at a rate of 65 mph, we substitute v with 65 into the equation: d = 2 ×65, which calculates to d = 130 miles.

Answer:

Answers are below

Step-by-step explanation:

       3y = 10 - x

2x + 6y = 7                 This set is correct because it is lined up correctly.

      y =  13 - 2x

4x - y = -1                    This set is also correct because it is lined up correctly.

The equations that have no solutions are:

x + 4y = 23

   - 3x = 12y +1         These equations don't touch

       3y = 10 - x

2x + 6y = 7              These equations don't touch

If these answers are correct, please make me Brainliest!

Answer:

x + 4y = 23

- 3x = 12y +1

3y = 10 - x

2x + 6y = 7

Step-by-step explanation:

Answer:

Ans- A

Step-by-step explanation:

When you have a quadratic like this, f(x) = [tex]x^{2}[/tex] + x - 12,

factorize it first.

Then you'll get f(x)= (x-3)*(x+4)

Finally, you set:

0= (x-3)*(x+4)

Just use the null factor law, and there you go.

x= 3 or x=-4

Have a nice day :)

The zeros of the given quadratic equation is equivalent to 3 and -4. Option A

Given the quadratic equation below:

f(x) = x² + x - 12

Factorising the expression, we will have:

f(x) = x² + 4x - 3x - 12

Factor

f(x) = (x² + 4x) - (3x  + 12)

f(x) = x(x+4) - 3(x + 4)

f(x) = (x - 3)(x+4)

If f(x) = 0

(x - 3)(x+4) = 0

x = 3 and -4

Hence  the zeros of f(x) = x^2 + x - 12 are 3 and -4.

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Answer:

32.692307692308%

Step-by-step explanation:

Let's go over the facts we know:

- There are 13 hearts in a deck of cards, 2 through ace

- There are 4 "2's" in a deck of cards, one for each suit

- There are 52 cards in a standard deck

The first step is to find the ratio.

Add the 13 hearts to the 4 "2's" to get the amount of cards to be drawn.

13 + 4 = 17.

Based on this, we know the ratio of hearts and "2's" to total cards is 17:52.

In other words, there is a 17 out of 52 chance that the card drawn will be a heart or a 2.

Now, we need to convert it to a percentage. To do so, divide 100 by 52. We get 1.92307692308. Now, multiply both 52 and 17 by 1.92307692308, and put the product with 17 as the numerator of the fraction and the product with 52 as the denominator. We get 32.692307692308/100. As a percent, this is written as 32.692307692308%

Therefore, the final answer is 32.692307692308%.

Answer:

if barbecue chips don't have any votes then D is the answer, if they do have votes then the answer may be A

Step-by-step explanation:

Answer:

Its barbecue crisps because no one choosed it !

Step-by-step explanation:

Answer:

wait is that rlly u?

Step-by-step explanation:

its me ethan

Answer:

r=67.2

Step-by-step explanation:

Answer:

r = 67.2

Step-by-step explanation:

8.25r = 554.4

divide 8.25 from both sides

r = 554.4/8.25 = 67.2

r = 67.2