Which of these parts of an informational text supports a central idea?(1 point)
Responses
dialogue
dialogue
citation of sources
citation of sources
transitions
transitions
evidence
evidence
How does the author of a text develop central ideas?(1 point)
Responses
by organizing the text into sections and subsections with headings
by organizing the text into sections and subsections with headings
by choosing a title that clearly states what the topic is
by choosing a title that clearly states what the topic is
by stating a central idea at the beginning of each paragraph
by stating a central idea at the beginning of each paragraph
by building the text around evidence in the form of supporting details
by building the text around evidence in the form of supporting details
Which one of the 5W + H questions does the following statistic answer?
The world's fastest roller coaster reaches a speed of almost 150 miles per hour, requiring thrill-seekers to wear goggles when they ride!
(1 point)
How
How
When
When
Who
Who
Where
Where
Which piece of evidence best supports the central idea?
Central idea: Playing video games can be good for children.
(1 point)
Video games give older children a chance to make social interactions and continue imaginative play.
Video games give older children a chance to make social interactions and continue imaginative play.
Children can become overly consumed and too focused while playing video games.
Children can become overly consumed and too focused while playing video games.
Some children may have trouble with mood swings after turning off video games.
Some children may have trouble with mood swings after turning off video games.
Video games can improve hand-eye coordination and problem-solving skills, but not as much as playing outdoors.
Video games can improve hand-eye coordination and problem-solving skills, but not as much as playing outdoors.
Use the additive inverse to find 8.76−26.54.(1 point)
The additive inverse of a number is the number that when added to the original number, gives a sum of zero.
To find the additive inverse of a number, we change the sign of the number, so if the number is positive, it becomes negative, and if the number is negative, it becomes positive.
For the expression 8.76 - 26.54, we can find the additive inverse of 26.54 by changing its sign to -26.54.
Now, we can rewrite the expression as 8.76 + (-26.54).
Adding these two numbers, we get -17.78.
Therefore, 8.76 - 26.54 is equal to -17.78.
Use the additive inverse to find −12 2/3−(−8 5/6). Write the answer as a mixed number.(1 point)
To find the additive inverse of a number, we change the sign of the number. In this case, we need to find the additive inverse of -8 5/6.
To change the sign of a mixed number, we change the sign of the whole number and the sign of the fraction.
The additive inverse of -8 5/6 is 8 5/6.
Now, we can rewrite the expression -12 2/3 - (-8 5/6) as -12 2/3 + 8 5/6.
To add these mixed numbers, we need to have the same denominator. The least common multiple of 3 and 6 is 6.
Converting -12 2/3 to the same denominator, we get -12 4/6.
Now we can add the mixed numbers:
-12 4/6 + 8 5/6 = -4 9/6.
Simplifying this mixed number, we get -4 3/2 as the answer.
What is the absolute value of subtracting these rational numbers on a vertical number line diagram? −22−1 1/2
To find the absolute value of subtracting two rational numbers, we subtract the numbers and then take the absolute value of the result.
To subtract -22 and -1 1/2, we need to convert -1 1/2 to a fraction.
-1 1/2 can be written as -3/2.
Now, subtracting -3/2 from -22, we get -22 - (-3/2) = -22 + 3/2.
To add these numbers, we need a common denominator. The least common multiple of 2 and 2 is 2.
-22 can be written as -44/2.
Now, we can add the fractions:
(-44/2) + (3/2) = (-44 + 3)/2 = -41/2.
Taking the absolute value of -41/2, we get | -41/2 | = 41/2.
Therefore, the absolute value of subtracting -22 and -1 1/2 is 41/2.
Subtract 12−(−8).
To subtract 12 - (-8), we can simplify the expression by adding the opposite of the second number.
The opposite of -8 is 8. So, we have:
12 + 8 = 20
Therefore, 12 - (-8) is equal to 20.
Use the additive inverse to find −123.45−(−234.76).(1 point)
To find the additive inverse of a number, we change the sign of the number. In this case, we need to find the additive inverse of -234.76.
The additive inverse of -234.76 is 234.76.
Now, we can rewrite the expression -123.45 - (-234.76) as -123.45 + 234.76.
To add these numbers, we simply add the decimals:
-123.45 + 234.76 = 111.31
Therefore, -123.45 - (-234.76) is equal to 111.31.
One reason animal cells don't need a central vacuole is because they often have smaller vacuoles for storage. What is another reason animal cells don't need central vacuoles?(1 point)
Responses
Animal cells have cell walls.
Animal cells have cell walls.
Animals do not produce their own food.
Animals do not produce their own food.
Animal bodies have skeletons or other means of providing structure.
Animal bodies have skeletons or other means of providing structure.
Animal cells are round.
Animals do not produce their own food.
Which cells contain chloroplasts?(1 point)
Responses
cells in plant roots and stems
cells in plant roots and stems
cells in plant leaves
cells in plant leaves
cells in animal brains
cells in animal brains
cells in animal muscles
cells in animal muscles
cells in plant leaves
If a particular cell is known to be round and incapable of producing its own food, which one of these organelles would you assume the cell must have?(1 point)
Responses
chloroplast
chloroplast
cell wall
cell wall
plasma membrane
plasma membrane
central vacuole
central vacuole
plasma membrane
Which statement is correct about organelles that provide energy? (1 point)
Responses
They are responsible for protein synthesis.
They are responsible for protein synthesis.
They are found only in animal cells.
They are found only in animal cells.
They are found only in plant cells.
They are found only in plant cells.
They are responsible for cellular respiration.
They are responsible for cellular respiration.
Which structure separates an animal cell from its surrounding environment? (1 point)
Responses
central vacuole
central vacuole
plasma membrane
plasma membrane
nuclear membrane
nuclear membrane
Golgi apparatus
Golgi apparatus
plasma membrane
Which organelle is responsible for transporting lipids in the cell? (1 point)
Responses
rough ER
rough ER
mitochondrion
mitochondrion
nucleus
nucleus
Golgi apparatus
Golgi apparatus
Which statement is correct about rough ER and smooth ER?(1 point)
Responses
Rough ER transports proteins, and smooth ER contains ribosomes.
Rough ER transports proteins, and smooth ER contains ribosomes.
Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
Rough ER contains ribosomes, and smooth ER transports proteins.
Rough ER contains ribosomes, and smooth ER transports proteins.
Rough ER transports materials other than proteins, and smooth ER contains ribosomes.
Rough ER transports proteins, and smooth ER contains ribosomes.
How would you group the following expression to make it easier to add?
18−949+79−8
(1 point)
Responses
(18 − 9 − 8)+(−49+79)
(18 − 9 − 8)+(−49+79)
(18 − 8)−(949+79)
(18 − 8)−(949+79)
(18 − 8 − 9)
(18 − 8 − 9)
(8 − 18)+(49+79)
(8 − 18)+(49+79)
(18 − 9 − 8)+(−49+79)
What is 12 8/15−7+7/15+15
in simplest form?
To simplify the expression 12 8/15−7+7/15+15, we need to convert the mixed numbers to improper fractions and then find a common denominator to add or subtract.
12 8/15 can be written as (12 * 15 + 8)/15 = 188/15.
7 can be written as 7/1.
7/15 remains the same.
15 can be written as 15/1.
Now, we can add or subtract the fractions:
188/15 - 7/1 + 7/15 + 15/1
To find a common denominator, we can multiply the denominators together, which gives us 15 * 1 * 15 * 1 = 225.
Multiplying the numerators and keeping the common denominator, we have:
(188 * 15 - 7 * 225 + 7 * 15 + 15 * 225) / 225
Simplifying the numerator:
(2820 - 1575 + 105 + 3375) / 225
(3825 + 105) / 225
3930 / 225
Now, we can simplify the fraction by reducing it:
3930 divided by 225 equals 17 remainder 105.
Thus, the fraction is 17 and 105/225.
In simplest form, the expression 12 8/15−7+7/15+15 is equal to 17 105/225.
What is 12 8/15−7+7/15+15
in simplest form?(1 point)
Responses
35
35
411515
41 and 15 over 15
201515
20 and 15 over 15
21
To simplify the expression 12 8/15 - 7 + 7/15 + 15, we need to perform the operations in the correct order.
First, we need to add the numbers within the mixed numbers to get a single fraction.
12 8/15 can be written as (12 * 15 + 8)/15 = 188/15.
Now, we can add the fractions and whole numbers:
188/15 - 7 + 7/15 + 15
To simplify this expression, we need to find a common denominator.
The common denominator of 15 and 1 is 15.
188/15 - 7/1 + 7/15 + 225/15
Now, we can add the fractions:
(188 - 105 + 7 + 225)/15
Combining the numerators:
(320 + 225)/15
545/15
In simplest form, 545/15 can be reduced by dividing both the numerator and denominator by their greatest common divisor, which is 5.
545/15 = (545 ÷ 5) / (15 ÷ 5) = 109/3
Therefore, the expression 12 8/15 - 7 + 7/15 + 15 simplifies to 109/3.
nope
Apologies for the mistake. Let's solve the expression correctly.
To simplify the expression 12 8/15 - 7 + 7/15 + 15, we need to perform the operations in the correct order.
First, let's convert the mixed numbers to improper fractions.
12 8/15 is equivalent to (12 * 15 + 8)/15, which simplifies to 188/15.
Next, we can add the fractions and whole numbers:
188/15 - 7 + 7/15 + 15
To simplify this expression, we need to find a common denominator.
The common denominator of 15 and 1 is 15.
188/15 - 7/1 + 7/15 + 225/15
Now, let's combine the numerators:
(188 - 7 + 7 + 225)/15
Applying the subtraction and addition:
(188 + 225)/15
413/15
Therefore, the simplified form of the expression 12 8/15 - 7 + 7/15 + 15 is 413/15.
JoJo had 1 1/2
cups of sugar. She used 3/4
cup for her cookies. How much does she have left?
To find out how much sugar JoJo has left, we need to subtract the amount she used from the amount she initially had.
JoJo had 1 1/2 cups of sugar, which can be written as 3/2 in improper fraction form.
She used 3/4 cup of sugar.
To subtract 3/4 from 3/2, we need to find a common denominator, which in this case is 4.
Multiplying the numerator and denominator of 3/2 by 2, we get 6/4.
Now we can subtract the fractions:
6/4 - 3/4 = 3/4.
Therefore, JoJo has 3/4 cup of sugar left.
−1/4+−3/5=
(1 point)
To simplify the expression -1/4 + -3/5, we need to find a common denominator for the two fractions. In this case, the common denominator is 20, which is the least common multiple of 4 and 5.
Multiplying the numerator and denominator of -1/4 by 5, we get -5/20.
Multiplying the numerator and denominator of -3/5 by 4, we get -12/20.
Now, we can add the fractions:
(-5/20) + (-12/20) = -17/20.
Therefore, -1/4 + -3/5 simplifies to -17/20.
The temperature in the evening was 5° F. Overnight the temperature dropped 9 degrees. What is the new temperature?(1 point)
To find the new temperature after the overnight drop of 9 degrees, we need to subtract 9 from the initial temperature of 5 degrees.
5 - 9 = -4
Therefore, the new temperature is -4 degrees Fahrenheit.
What is 8 − 7 1/4
To subtract mixed numbers, we need to convert them to improper fractions and then find a common denominator to perform the subtraction.
8 can be written as 8/1.
To convert 7 1/4 to an improper fraction, we multiply the whole number by the denominator and add the numerator:
7 * 4 = 28
28 + 1 = 29
So, 7 1/4 is equivalent to 29/4.
Now, we can subtract the fractions:
8/1 - 29/4
To find a common denominator, we multiply the denominators: 1 * 4 = 4.
Now, we can rewrite the expression with a common denominator:
(8/1) * (4/4) - 29/4
Simplifying:
32/4 - 29/4
Subtracting the numerators:
(32 - 29)/4 = 3/4
Therefore, the result of 8 - 7 1/4 is 3/4.
What is −4 5/11 − 2 4/11?
To subtract mixed numbers, we need to convert them to improper fractions and then find a common denominator to perform the subtraction.
To convert -4 5/11 to an improper fraction, we multiply the whole number by the denominator and add the numerator:
-4 * 11 = -44
-44 + 5 = -39
So, -4 5/11 is equivalent to -39/11.
To convert 2 4/11 to an improper fraction, we multiply the whole number by the denominator and add the numerator:
2 * 11 = 22
22 + 4 = 26
So, 2 4/11 is equivalent to 26/11.
Now, we can subtract the fractions:
-39/11 - 26/11
To subtract these fractions, the denominators are already the same, so we can simply subtract the numerators:
(-39 - 26)/11 = -65/11
Therefore, the result of -4 5/11 - 2 4/11 is -65/11.
What is −6 7/12 − 4 1/3?
To subtract mixed numbers, we need to convert them to improper fractions and then find a common denominator to perform the subtraction.
To convert -6 7/12 to an improper fraction, we multiply the whole number by the denominator and add the numerator:
-6 * 12 = -72
-72 + 7 = -65
So, -6 7/12 is equivalent to -65/12.
To convert 4 1/3 to an improper fraction, we multiply the whole number by the denominator and add the numerator:
4 * 3 = 12
12 + 1 = 13
So, 4 1/3 is equivalent to 13/3.
Now, we can subtract the fractions:
-65/12 - 13/3
To find a common denominator, we multiply the denominators: 12 * 3 = 36.
Now, we can rewrite the expression
Which of the following do scientists believe about Homo sapiens?
(1 point)
Responses
They were the earliest ancestors of modern human beings.
They were the earliest ancestors of modern human beings.
They arose in different parts of the world at the same time.
They arose in different parts of the world at the same time.
They arose in Africa and spread to the rest of the world.
They arose in Africa and spread to the rest of the world.
They once lived in Africa but were replaced by modern humans.