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Vitek1552 [10]
2 years ago
14

Mrs. Hamilton tallies her students test grades in the table below. What percent of the class received an A or a B?

Mathematics
2 answers:
sertanlavr [38]2 years ago
7 0

Answer:

J. 40%

Step-by-step explanation:

12 students received an A or B. There are 30 students.

12/30=0.40

=40%

Anuta_ua [19.1K]2 years ago
3 0

Answer:

The correct answer would be 30%

Hope this helps!

Mark me brainliest if I'm right :)

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How many gallons of water will be in the fish tank after 3 minutes? how can you explain your answer
Lera25 [3.4K]

The question is incomplete, the complete question is;

If in 0.5 min the tank gets 0.8 gallons of the water then

how many gallons will be in 1 min ?

how many gallons will be in 3 min?

and how long it takes for 40 gallons?

Answer:

1.6 gallons

4.8 gallons

25 mins

Step-by-step explanation:

This question has to do with proportion.

If it takes 0.5 mins for the tank to get 0.8 gallons

in 1 minute the tank will get 0.8 * 1/0.5 = 1.6 gallons

In 3 minutes the tank will get 3 * 1.6 gallons = 4.8 gallons

if it takes 1 min to get 1.6 gallons

it will take x mins to get 40 gallons

x = 1 * 40/1.6 = 25 mins

5 0
2 years ago
Line AB goes through the points A (0, –4) and B (6, 2). Which equation represents line AB?
insens350 [35]

Answer:

Option C) y + 4 = x

Step-by-step explanation:

We are given the following information in the question:

Line AB goes through the points A (0, –4) and B (6, 2).

We can use the two-point form of equation of straight line.

The equation of line is given by:

(y-y_1) = \displaystyle\frac{y_2-y_2}{x_2-x_1}(x-x_1)

where, (x_1,y_1), (x_2.y_2) is the point through which the line passes.

The equation of line is:

(y+4) = \displaystyle\frac{2+4}{6-0}(x-0)\\\\(y+4)= x\\y = x-4

Thus, the equation of line AB is given by Option C) y + 4 = x

7 0
2 years ago
Read 2 more answers
Answer the questions below about Line 1 and Line 2 shown below.
givi [52]
  1. The expression was rewritten using the commutative law of addition.
  2. Line 1 says 3 + 4, which could be represented using dots as ••• + •••• for a total of 7 dots.
  3. Line 2 says 4 + 3, which could be represented using dots as •••• + ••• for a total of 7 dots.

<h3>What is the commutative law of addition?</h3>

The commutative law of addition is also referred to as the law of cumulative addition and it states that if two numbers are added together, then, the outcome is equal to the addition of their interchanged position because addition is considered as a binary operation.

This ultimately implies that, the sum of addends would always be the same (equal) regardless of their arrangement in accordance with the commutative law of addition. Mathematically, the commutative law of addition can be represented using the following formula:

A + B = B + A.

In this context, we can reasonably infer and logically deduce that the given expression was rewritten using the commutative law of addition.

In conclusion, Line 1 says 3 + 4, which could be represented using dots as ••• + •••• for a total of 7 dots. Line 2 says 4 + 3, which could be represented using dots as •••• + ••• for a total of 7 dots.

Read more on commutative law of addition here: brainly.com/question/778086

#SPJ1

6 0
1 year ago
Nicole has evaluation scores of 93, 88, 76. Her fourth evaluation will be averaged with her previous three scores
Fofino [41]

Answer:

Is there more to the question?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I NEED HELP ASAP!!!!
Degger [83]
I hope this helps you!

4 0
3 years ago
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