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2 years ago

Help i'll mark youuuuuuuuuuuuuu

Mathematics

1 answer:

almond37 [142]2 years ago

5 0

Answer:

A. 525 feet

Step-by-step explanation:

If every hour their altitude increased by 135 then their would be an increase of 675 (135 × 5) after 5 hours. To find their altitude 5 hours earlier then you would subtract 675 from their current altitude. 1,200-675=525 feet

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bezimeni [28]

Answer:

Step-by-step explanation:

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4 years ago

I need help in this section please!!

MrRissso [65]

Answer:

$\frac{1}{25}$

Step-by-step explanation:

Probability of first yellow ball $=\frac{total\ yellow\ ball}{Total\ ball}=\frac{2}{10}=\frac{1}{5}$

Since first ball is again placed in the bag

Probability of second yellow ball $=\frac{total\ yellow\ ball}{Total\ ball}=\frac{2}{10}=\frac{1}{5}$

These two are independent events so the probability of both yellow balls= $=\frac{1}{5} \times \frac{1}{5} =\frac{1}{25}$

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3 years ago

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weeeeeb [17]

Answer:

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Step-by-step explanation:

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3 years ago

Which system or equation is represented in the graph?

melamori03 [73]

Answer:

$(A)\displaystyle \begin{array} {ccc} \displaystyle y = - 2 \\ x - 2y = 6\\ \end{array}$

Step-by-step explanation:

<h3>Equation of the blue line:</h3>

since the line is horizontal and passes <u>-</u><u>2</u> the equation of the blue line should be

$\displaystyle \large y = - 2$

<h3>Equation of the red line:</h3>

remember The form of equation of a line

$\displaystyle \boxed{ \displaystyle y = mx + b}$

where m is slope of the line and b is the y-intercept we can clearly see that the red line crosses y-axis at (0,-3) therefore b=-3

to figure out m we can consider the following formula:

$\displaystyle m = \frac{ \Delta y}{ \Delta x}$

from the graph we acquire ∆y=1 and ∆x=2

thus substitute:

$\displaystyle m = \frac{ 1}{ 2}$

so we have figured out m and b

therefore our equation of blue line is

$\displaystyle y = \frac{1}{2} x - 3$

our given options are in standard form so

move -3 to left hand side and change its sign:

$\displaystyle y + 3= \frac{1}{2} x$

cross multiplication:

$\displaystyle 2y + 6= x$

move 6 to right hand side and x to left hand side and change its sign

$\displaystyle - x + 2y = - 6$

multiply both sides by -1:

$\displaystyle x - 2y = 6$

hence, our system of linear equation is

$\displaystyle \begin{cases} \displaystyle y = - 2 \\ x - 2y = 6\\ \end{cases}$

3 0

3 years ago

All of the following proportions are equivalent except

Ira Lisetskai [31]

I think that the answer would be B

6 0

3 years ago