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3 years ago

School started at 8:05 a.m and ended at 2:40p.m. the work below shows Erica's calculation of the length of the school day

Mathematics

1 answer:

harina [27]3 years ago

7 0

Answer:

B. She subtracted the end time from the start time and

D. She did not account for a.m. and p.m. in the start and end times.

Step-by-step explanation:

The school started at 8:05 a.m. and ended at 2:40 p.m.

And the length of the school day is calculated by Erica and it is shown in the attached photo.

See the attached photo.

Erica has done two errors which are

B. She subtracted the end time from the start time and

D. She did not account for a.m. and p.m. in the start and end times. (Answer)

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A square lawn has a length of 8 feet and a width of 8 feet. Eight researchers each examine a randomly chosen

Goshia [24]

The best approximation to the number of seedlings that are at least 2 inches high in the entire lawn is:

D. 6,400

<h3>Total Seedlings Calculation.</h3>

To identify the total number of seedling in the entire lawn, first you must add all the seedling counted by the researchers:

Counted seedlings = 82 + 87 + 95 + 99 + 102 + 106 + 111 + 115
Counted seedlings = 697

Now, you must divide 697 in the number of regions taken by the researchers ( in this case were 8), this to obtain the average:

Average seedlings by region = $\frac{697}{8}$
Average seedlings by region = 87.125

Now, how we know, the entire lawn has a length of 8 feet and a width of 8 feet, it means 64 regions of one feet by one feet, by this reason, we multiply the average of seedlings by the whole regions in the lawn:

Number of seedlings in the lawn = 87.125 * 64
Number of seedlings in the lawn = 5576

Taking into account the average of seedlings is 5576, the best approximates of seedlings that are at least 2 inches high in the entire lawn is 6400.

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1 year ago

Solve for x -6x + 14<-28 AND 3x + 28 < 25

MAVERICK [17]

Answer:

Treat the lesser than sign as an equal sign. What you do to one side, you do to the other. Isolate the variable x. Do the opposite of PEMDAS.

PEMDAS = Parenthesis, Exponents ( & roots), Multiplication, Division, Addition, Subtraction.

Solve -6x + 14 < -28

First, subtract 14 from both sides:

-6x + 14 (-14) < -28 (-14)

-6x < -42

Next, divide -6 from both sides to isolate the variable x. Note that when you divide (or multiply) by a negative number, you must flip the greater than or less than sign.

(-6x)/-6 < (-42)/-6

x > (-42)/(-6)

x > 7

x > 7 is your answer.

Solve 3x + 28 < 25

First, subtract 28 from both sides.

3x + 28 (-28) < 25 (-28)

3x < -3

Isolate the variable x. Divide 3 from both sides. Note that because you aren't dividing by a negative number (rather a positive 3), you do not flip the sign.

(3x)/3 < (-3)/3

x < (-3)/(3)

x < -1

x < -1 is your answer.

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2 years ago

What would you choose as x in the given series of clicks to calculate formulas automatically: file < options < x < auto

Leona [35]

We should choose Formulas as X in the given series of clicks to calculate formulas automatically.

File < Options < (A) Formulas < Automatic

<h3>What are Formulas?</h3>

In science, a formula is a concise way of symbolically expressing information, such as a mathematical formula or a chemical formula.
In science, the term formula refers to the general construct of a relationship between given quantities.
In mathematics, a formula is an identity that equates one mathematical expression to another, the most important of which are mathematical theorems.
A formula (also known as a well-formed formula) is a logical entity that is constructed using the symbols and formation rules of a given logical language.

We should choose Formulas as X in the given series of clicks to calculate formulas automatically.

Therefore, File < Options < (A) Formulas < Automatic

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The complete question is given below:

What would you choose as X in the given series of clicks to calculate formulas automatically: File < Options < X < Automatic?

a. Formulas

b. Language

c. Proofing

d. Advanced

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1 year ago

1. What is a stock? a. A bank account b. A type of bank c. Shares that are given to only rich people who own companies d. Shares

Sophie [7]

Answer:

Step-by-step explanation:

Stocks represent ownership in companies. Anyone can purchase publicly traded stock shares.

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2 years ago

45% of ____ is 396 what is the blank?

Alenkasestr [34]

Answer: 880. Divide .45 from 396 to get 880.

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2 years ago

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