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3 years ago

The expression - 270+ 13m represents a submarine that began at a depth of 270 feet below sea

Mathematics

1 answer:

Kobotan [32]3 years ago

8 0

Answer:

The submarine would be 179 feet below sea level

Step-by-step explanation:

m = 7

13 x 7 = 91

-270 + 91 = -179

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A tree casts a 25 foot shadow. At the same time of day, a 6 foot man standing near the tree casts a 9 foot shadow. What is the a

AysviL [449]

So, the man is 6 feet, but casts a 9 foot shadow. So, you divide 25 by 9, and then you would find it goes into it 2.8 times, so round and get 3 if you want,or keep it. And then 12, or round to 13.

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3 years ago

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60 inches = ______ feet ? Please do a step-by-step explanation (no multiple choice)

Firdavs [7]

60 inches = ____ feet ?

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2 years ago

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How can I find the unknown side lengths when given the area or circumference of a figure?

ad-work [718]

Answer:

Set up the area/circumference equations using x as the unknown variable. Then, solve for that variable and apply the correct unit.

Step-by-step explanation:

For example,

Find the side length of a square with an area of 49 square centimeters.

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3 years ago

Plot and connect the following points: P(1, −4), Q(5, −2), R(9, −4), S(7, −8), and T(3, −8). Give the best name for the polygon,

Citrus2011 [14]

Answer:

The area of the pentagon is = 31.5

Step-by-step explanation:

First, we determine the perimeter of the "Pentagon" drawn in the attachment:

$p=4+4+4+4.5+4.5=21$

Now, we'll check the formula for pentagons:

$a=\frac{perimeter x apothem}{2}$

we calculate the apothem by placing a 90° angle in one of the sides of the shape. It is equal to:

apothem=3

then, we can substitute the values in the formula

$a=\frac{21(perimeter) x 3(apothem)}{2} =\frac{63}{2} =31 \frac{1}{2} or 31.5$

Let me know if you have questions :D

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3 years ago

How are discontinuities and zeros created in rational expressions, and in what ways can they be accounted for graphically?

pshichka [43]

Discontinuities can be recognized by observing at asymptotes. An asymptote is a line where the space between the curve and the line go to zero as single or both of the x or y coordinates inclines to infinity. Graphically, they're holes in the graph. Zeroes are points wherever the graph hits the x axis.

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4 years ago