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adelina 88 [10]
3 years ago
11

A swim instructor had a contest to see how many seconds her students could hold their breath underwater. The results from the co

ntest are shown in the list below. 17, 34, 40, 41, 50, 50, 53, 56, 57, 58, 64, 70

Mathematics
2 answers:
OverLord2011 [107]3 years ago
6 0
The correct answer is D
atroni [7]3 years ago
4 0

D is the correct answer.

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Can you simplify -3.2/0.8​
Vlad1618 [11]
<h3>Answer:   -4</h3>

Explanation:

Move the decimal point to the right one spot for each value

-3.2 turns into -32

0.8 turns into 8.0 which is the same as 8

That means the given fraction is the same as -32/8 which simplifies into -4

3 0
3 years ago
Solve the following system using the elimination method: 2x-4y=2 -4x+6y=-4
Tomtit [17]

Answer:

(1, 0)

Step-by-step explanation:

Given the 2 equations

2x - 4y = 2 → (1)

- 4x + 6y = - 4 → (2)

Multiplying (1) by 2 and adding to (2) will eliminate the x- term

4x - 8y = 4 → (3)

Add (2) and (3) term by term

(- 4x + 4x) + (6y - 8y) = (- 4 + 4), simplifying gives

- 2y = 0 ⇒ y = 0

Substitute y = 0 in (1) or (2)

Substituting in (1) gives

2x - 0 = 2, that is

2x = 2 ( divide both sides by 2 )

x = 1

Solution is (1, 0 )

3 0
3 years ago
The difference of the degree of polynomials 3xy^2 and 2x is
sergejj [24]

Step-by-step explanation:

You have studied polynomials consisting of constants and/or variables combined by addition or subtraction. The variables may include exponents. The examples so far have been limited to expressions such as 5x4 + 3x3 – 6x2 + 2x containing one variable, but polynomials can also contain multiple variables. An example of a polynomial with two variables is 4x2y – 2xy2 + x – 7.

Many formulas are polynomials with more than one variable, such as the formula for the surface area of a rectangular prism: 2ab + 2bc + 2ac, where a, b, and c are the lengths of the three sides. By substituting in the values of the lengths, you can determine the value of the surface area. By applying the same principles for polynomials with one variable, you can evaluate or combine like terms in polynomials with more than one variable

8 0
2 years ago
What is the measure of the sides of a square with an area of 49 inches
Lunna [17]

Answer:

7 inches

Step-by-step explanation:

area of square=l^2

49=l^2

\sqrt{49=l

7=l

therefore the sides of a triangle is 7 inches.

7 0
3 years ago
Read 2 more answers
Will give brainliest!!! Determine the answer to (−5) + 4 and explain.
algol13

Answer:

The answer is -1 because adding onto a negitive number makes the number go towards 0

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
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