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Mathematics

2 answers:

zubka84 [21]3 years ago

8 0

It’s 5 to 10 seconds EXPLANATION: if you were to go from 49 feet in the air to 19 feet in the air, which means you descended, You would’ve gone -30 feet in 5 seconds. This means that for you to go from 19 to 20 feet in 5 seconds, you would’ve gone through the least change.

Y_Kistochka [10]3 years ago

3 0

Answer:

5 to 10 seconds

Step-by-step explanation:

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2(z – 10) = -4<br> (ignore this)

sukhopar [10]

2(z-10)=-4
2z-20=-4
2z=16
z=8

3 0

3 years ago

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A parallelogram has an area of x^2 + 9x - 36. A. What are expressions for the length and width of the parallelogram?B. If x is a

katrin2010 [14]

Step-by-step explanation:

$Area \: of \: parallelogram \\ = {x}^{2} + 9x - 36 \\ = {x}^{2} + 12x - 3x - 36 \\ = x(x + 12) - 3(x + 12) \\ = (x + 12)(x - 3) \\ \implies \\ length = (x + 12) \: units \\ width = (x - 3) \: units \\$

For this parallelogram to exist least value of x should be 4.

Because if x = 3

(x - 3)= 3 - 3 =0

Thus width of parallelogram would become zero as a result area of parallelogram would become zero i. e. Parallelogram won't exist.

8 0

3 years ago

Calculate 4 raise to power 2 multiply by 5 raise to poer 2 minus 18 raise to power 2

Paladinen [302]

Answer:

Step-by-step explanation:

4^2 x 5^2 - 18^2

PEMDAS is our acronym for order of operations: Parentheses, exponents, multiplication, division, addition, subtraction.

Since we have no parentheses, we'll calculate the numbers and exponents (PEMDAS) first. "to the power of 2" is also called "squared" and means multiplying that number by itself.

(4x4) x (5x5) - (18x 18)

=16 x 25 - 324

Now we multiply: (PEMDAS)

= 400 - 324

then subtract: (PEMDAS)

=76

3 0

3 years ago

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Which whole-number values of x make the inequality 3x -2 < 12 true?

Rufina [12.5K]

3x - 2 < 12
3x < 12 + 2
3x < 14
x < 14/3
x < 4 2/3......whole-number value = 4