Question

What is 12815 − 7 + 715 + 15? Simplify your answer.(1 point)
Responses

20 15/15


21

35


41 15/15
Answer
What is 12 8/15 − 7 + 7/15 + 15? Simplify your answer.(1 point)
Responses

20 15/15

21

35

41 15/15
Answer
How should you group the following expression to make it easiest to add? 18 − 9 4/9 + 7/9 − 8(1 point)
Responses

(18 − 9 − 8) + (−4/9 + 7/9)

(18 − 8) + (−9 4/9 + 7/9)

(18 − 8 − 9)

(8 − 18) + (4/9 + 7/9)
Answer
What should you do if a place value is missing a number?(1 point)
Responses

Remove the last digit(s) in the number that has the additional place values,

Nothing.

Subtract without it.

Add a zero.
Answer
What is −18.1−5? (1 point)
Responses

23.1

13.1

−23.1

−13.1
Answer
What is −189.987−30.87? (1 point)
Responses

−159.117

220.857

−220.857

159.117
Answer
What is 8 − 7 1/4?(1 point)
Answer
What is 8 − 7 1/4? (1 point)
Answer
What is −4 5/11 − 2 4/11? (1 point)
Answer
What is −4 5/11 − 2 4/11?(1 point)
Answer
What is −6 7/12 − 4 1/3? (1 point)
Answer
What is 907.907−709.709?(1 point)
Answer
What is 90.897−81.725? (1 point)
Answer
How does the mass of the Earth compare to the mass of moon? (1 point)
Responses

The mass of the Earth is about 40 times the mass of the moon.

The mass of the Earth is about 50 times the mass of the moon.

The mass of the Earth is about 80 times the mass of the moon.

The mass of the Earth is about 70 times the mass of the moon.
Answer
Why are there craters on the surface of the moon? (1 point)
Responses

Craters were created when sinkholes formed after rainstorms on the moon.

Craters developed from deep waterspouts in oceans on the moon.

Craters resulted when meteoroids crashed into the surface of the moon.

Craters formed when acidic water dissolved the surface of the moon.
Answer
A student creates a Venn diagram depicting two objects in the solar system. On one side of the Venn diagram, the student writes “have surface features such as mountains, valleys, and volcanoes,” and on the other side of the Venn diagram, the student writes “unable to land on because there is no solid surface.”

Which two objects is the student comparing?

(1 point)
Responses

Earth and Venus

Inner and Outer Planets

Sun and Planets

Moon and Earth
Answer
Which of the following best describes the make up of Saturn's rings? (1 point)
Responses

solid bands of sand and dust that formed from the start of the universe

debris and rocks from other planets that orbit around Saturn

dust, rock, and ice particles that orbit due to Saturn's gravity

material from comets that have passed through Saturn's atmosphere
Answer
Which of the following explains why history is divided into eras? (1 point)
Responses

to help understand each event that occurred in that time period to give an in-depth picture


to help historians organize history and highlight common characteristics and turning points

The people who lived the history divided it up into eras for future historians to study.

to group events and dates in periods that cannot overlap with other periods of time
Answer
Identify two possible names for the era of Texas history that lasted from 1865 to 1900. (1 point)
Responses

the era of the Texas Republic or Early Statehood

the era of Reconstruction or the Age of Oil

the era of Cotton, Cattle, and Railroads or the Jim Crow era

the Civil Rights era or the era of Texas Conservatism
Answer
Identify the era when crop farming and permanent settlements were first introduced to Texas. (1 point)
Responses

the Spanish Colonial era

the era of Indigenous Texas

the Age of Contact era

the era of Cotton, Cattle, and Railroads
Answer
What colony was Texas part of before 1821?(1 point)
Responses

New England

New Spain

New Mexico

New Amsterdam
Answer
When was Texas its own country?(1 point)
Responses

1718 to 1821

1836 to 1845

1821 to 1836

1845 to 1860
Answer
Which description defines a sequence of events?(1 point)
Responses

the order in which things happen

the person writing down what happens

the place and time in which things happen

the people making things happen
Answered by GPT 3.5
The simplified answer is 12815.
Answered by GPT 3.5
To simplify the expression, we first convert the mixed number 12 8/15 to an improper fraction:

12 8/15 = (12 * 15 + 8)/15 = 188/15

Next, we add all the fractions together:

188/15 - 7 + 7/15 + 15

To add the fractions, we need a common denominator. We can use 15 as the common denominator for all fractions:

(188 - 7*15 + 7 + 15*15)/15

Simplifying the numerator:

(188 - 105 + 7 + 225)/15 = 315/15

Finally, we simplify the fraction 315/15:

315/15 = 21

So, the simplified answer is 21.
Answered by GPT 3.5
To make it easiest to add the expression 18 − 9 4/9 + 7/9 − 8, you should group it in a way that allows you to simplify each part separately.

Option 1: (18 − 9 − 8) + (−4/9 + 7/9)
This groups the subtraction together and the addition of the fractions together.

Option 2: (18 − 8) + (−9 4/9 + 7/9)
This groups the subtraction and addition of the integers together, and the addition of the fractions together.

Option 3: (18 − 8 − 9)
This groups all the subtraction together.

Option 4: (8 − 18) + (4/9 + 7/9)
This groups the subtraction of the integers together, and the addition of the fractions together.

So, the correct answer is option 1: (18 − 9 − 8) + (−4/9 + 7/9)
Answered by GPT 3.5
To account for a missing number in a place value, you should add a zero.
Answered by GPT 3.5
The correct answer is -23.1.
Answered by GPT 3.5
The correct answer is -220.857.
Answered by GPT 3.5
To subtract a mixed number and a fraction, we need to convert the mixed number to an improper fraction first:

7 1/4 = (7 * 4 + 1)/4 = 29/4

Now we can subtract 29/4 from 8:

8 - 29/4

To subtract fractions, we need a common denominator. In this case, the common denominator is 4:

(32/4) - (29/4)

Subtracting the fractions:

(32 - 29)/4 = 3/4

So, 8 - 7 1/4 = 3/4.
Answered by GPT 3.5
To subtract mixed numbers, we need to convert them to improper fractions first:

- 4 5/11 = - (4 * 11 + 5)/11 = - (44 + 5)/11 = - 49/11
- 2 4/11 = - (2 * 11 + 4)/11 = - (22 + 4)/11 = - 26/11

Now we can subtract them:

- 49/11 - 26/11

The fractions have the same denominator, so we can combine them:

- (49 - 26)/11 = - 23/11

So, -4 5/11 - 2 4/11 = - 23/11.
Answered by GPT 3.5
To subtract mixed numbers, we first convert them to improper fractions:

-4 5/11 = -(4 * 11 + 5)/11 = - (44 + 5)/11 = -(49/11)
-2 4/11 = -(2 * 11 + 4)/11 = - (22 + 4)/11 = -(26/11)

Now, we can subtract these fractions:

-(49/11) - (26/11)

Since the fractions have the same denominator, we can simply subtract the numerators:

-(49 - 26)/11 = -23/11

Therefore, -4 5/11 - 2 4/11 = -23/11.
Answered by GPT 3.5
To subtract mixed numbers, we first convert them to improper fractions:

-6 7/12 = -(6 * 12 + 7)/12 = -(72 + 7)/12 = -79/12
-4 1/3 = -(4 * 3 + 1)/3 = -(12 + 1)/3 = -13/3

Now, we can subtract these fractions:

-(79/12) - (13/3)

To subtract fractions, we need a common denominator. In this case, the common denominator is 12:

-[(79 * 3)/(12 * 3)] - [(13 * 4)/(3 * 4)]

Simplifying the numerators:

-(237/36) - (52/12)

Since the fractions have the same denominator, we can simply subtract the numerators:

-(237 - 52)/36 = -185/36

Therefore, -6 7/12 - 4 1/3 = -185/36.
Answered by GPT 3.5
To subtract decimal numbers, we start by aligning the decimal points:

907.907
- 709.709
----------

Next, we can subtract each place value:

7.907
- 9.709
----------

Since we cannot subtract 9 from 7, we need to borrow from the digit to the left.

We can borrow 1 from the 9 in the hundreds place and add it to the 7 in the tenths place:

6.907
- 9.709
----------

Now we can subtract each place value:

6.907
- 9.709
----------
-2.802

Therefore, 907.907 - 709.709 = -2.802.
Answered by GPT 3.5
To subtract decimal numbers, we start by aligning the decimal points:

90.897
- 81.725
-----------

Next, we can subtract each place value:

.897
- .725
-----------

Since we cannot subtract 7 from 5, we need to borrow from the digit to the left.

We can borrow 1 from the 9 in the units place and add it to the 5 in the tenths place:

10.897
- 81.725
-----------

Now we can subtract each place value:

10.897
- 81.725
-----------
-70.828

Therefore, 90.897 - 81.725 = -70.828.
Answered by GPT 3.5
The correct answer is:
The mass of the Earth is about 80 times the mass of the moon.
Answered by GPT 3.5
The correct answer is: Craters resulted when meteoroids crashed into the surface of the moon.
Answered by GPT 3.5
The student is comparing Earth and Venus
Answered by GPT 3.5
The correct answer is: dust, rock, and ice particles that orbit due to Saturn's gravity.
Answered by GPT 3.5
The correct answer is: to help historians organize history and highlight common characteristics and turning points.
Answered by GPT 3.5
Two possible names for the era of Texas history that lasted from 1865 to 1900 are:

1. The era of Reconstruction or the Age of Oil
2. The era of Cotton, Cattle, and Railroads or the Jim Crow era
Answered by GPT 3.5
The era when crop farming and permanent settlements were first introduced to Texas is the Spanish Colonial era.
Answered by GPT 3.5
Texas was part of New Spain before 1821.
Answered by GPT 3.5
Texas was its own country from 1836 to 1845.
Answered by GPT 3.5
The description that defines a sequence of events is: the order in which things happen.