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3 years ago

................. plz let only deltaalex answer:) don’t trust anyone on here but them!

Mathematics

1 answer:

nevsk [136]3 years ago

3 0

Answer:

Step-by-step explanation:

oh law of sines soo sin(A) / a = Sin(B) / b

2a)

here DE = side f then let's find that side with law of sines and plug side f in as 'a' in law of sines , so

Sin(28) / a = Sin(54) / 31 ( where a = f = DE )

can you do the algebra here Emily? or do you want me to show that?

Sin(28) *31 / Sin(54) = a

17.989 =a

18.0 =a (rounded to nearest 10th)

DE = 18.0 m

2b)

find RT where RT = side a

since they give use 2 of the other sides of the triangle we can quickly figure out the S angle. 180 = 71+62+S so S = 47° ( I'm going kinda fast b/c I don't know how much time you have :? )

then Sin(A) /a = Sin(B) / b

Sin(47) / a = Sin(62) / 29

Sin(47) *29 / Sin(62) = a

24.020 = a

RT = 24.0 meters ( rounded to nearest 10th )

2c)

they want us to find ∠X with law of sines soo

I'll just use the letter they give us for variables

Sin(X) / x = Sin(Y ) / y

Sin(X) = x* Sin(y) / y

X = arcSin [ 14 * Sin(108) / 34 ]

X = arcSin [ 0.3916115]

X = 23.0548°

X= 23° ( rounded to nearest degree )

2d)

they ask us to find ∠E

I'll , again, use the letter they give us for variables

Sin(E) / e = Sin( F ) / f

Sin(E) / 18 = Sin(78) / 30

E = arcSin[ 18 * Sin(78) / 30 ]

E = arcSin [ 0.5868856 ]

E = 35.936 °

E = 36 ° ( rounded to nearest degree )

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PLEASE HELP IVE BEEN STUCK ON THIS FOR SO LONG! ILL GIVE BRAINLIEST HELP ASAP PLEASE

yawa3891 [41]

Answer:

It would be A

Step-by-step explanation:

If you are minusing by 5 in the equation then that means that they graph has gone down by 5 units not up. and since 4x and is positive and -2x is negative the graph would flip over the years axis

4 0

3 years ago

A box is contructed out of two different types of metal. the metal for the top and bottom, which are both square, costs $3 per s

zysi [14]

Let x ft be the length of the base square and y ft be the height of the box.

The volume of the box is

$V=x\cdot x\cdot y\ ft^3.$

Since the box has a volume of 15 cubic feet, then

$x^2y=15,\\ \\y=\dfrac{15}{x^2}.$

You need to construct two squares from the metal that cost $3 per square foot.

The area of each square is $x^2\ ft^2$ and the total cost for these two squares is $2\cdot x^2\cdot 3=6x^2.$

The area of each side face is $x\cdot y=x\cdot \dfrac{15}{x^2}=\dfrac{15}{x}.$ Then the total cost for sides is $4\cdot \dfrac{15}{x}\cdot 10=\dfrac{600}{x}.$

Let S(x) be the function that represents total cost of the box, then

$S(x)=6x^2+\dfrac{600}{x}.$

Find the derivative:

$S'(x)=12x-\dfrac{600}{x^2}.$

When $S'(x)=0,$ then $12x-\dfrac{600}{x^2}=0,\\ \\12x^3=600,\\ \\x^3=50,\\ \\x=\sqrt[3]{50}\ ft.$

The dimensions of the box are:

length and width - $\sqrt[3]{50}\ ft$

height - $\dfrac{15}{\sqrt[3]{2500}}\ ft.$

4 0

3 years ago

saw5 [17]

Answer:

A. The number of boxes that can be packed by Ryan and Daniel each increases over time. Daniel's function has a greater rate of

change than Ryan's function indicating that Daniel can pack more boxes per hour.

Step-by-step explanation:

Given

Ryan: 3 boxes per hour

Daniel: $y = 4h$

Required

True statement about their functions

First, we calculate Ryan's function.

In 1 hour, he can pack 3 boxes.

In hours, he can pack 3h boxes.

So, the equation is:

$y = 3h$

So, we have:

$y = 3h$ ---- Ryan

$y = 4h$ --- Daniel

Both functions represent direct proportional functions.

So, when h increases y also increases.

However, Daniel's function has a greater rate of change because $y = 4h$ implies that he can pack 4 boxes per hour while Ryan can pack 3.

3 0

3 years ago

HELP FAST ILL MAKE BRAINIEST Mr. McClellan compared the weights (in pounds) of pairs of elk antlers dropped at Mount St Helens N

Anika [276]

a.1 Line plot for eight of elk antler pairs at Mount St Helens NVM

The diagram is shown in figure 1.

a.2 Weight of elk antler pairs at Rocky Mountain NP

The diagram is shown in figure 2.

b. Calculate the following for each set of data:

We can found the mean (µ) of a set of data points by adding them up and dividing by the number of data points.

b.1 Purple Mean:

Set: $\{34, 34, 30, 30, 30, 28, 28, 26\} \rightarrow \frac{34+34+30+30+30+28+28+26}{8} \rightarrow \boxed{\mu=30}$

b2. Red Mean:

Set: $\{40, 38, 36, 36, 36, 36, 34, 32\} \rightarrow \frac{40+38+36+36+36+36+34+32}{8} \rightarrow \boxed{\mu=36}$

b.3 Red Median

The Median is the middle of a sorted list of numbers. The median of a finite list of numbers can be found by arranging all the numbers from smallest to greatest. So, arranging the red set we have:

$\{32, 34, 36, 36, 36, 36, 38, 40\}$

Given that the number of elements is pair, the median can be solved as follows:

 $\overline{x}=\frac{x_{(n/2)}+ x_{((n/2)+1)}}{2}$

∴ $n=8$
∴ $x_{(n/2)}=x_{(4)}=36$
∴ $x_{((n/2)+1)}=x_{(5)}=36$

Then:

$\overline{x}=\frac{36+36}{2}=36$

b.4 Purple MAD

The Mean Absolute Deviation (MAD) is when you find the distance of each data point from the mean and then find the mean of those distances. So:

$\{34, 34, 30, 30, 30, 28, 28, 26\}$ has $\mu=30$
$distances=\{4, 4, 0, 0, 0, 2, 2, 4\} \rightarrow \frac{4+4+0+0+0+2+2+4}{8}= \boxed{MAD=2}$

b.5 Red MAD

$\{40, 38, 36, 36, 36, 36, 34, 32\}$ has $\mu=36$
$distances=\{4, 2, 0, 0, 0, 0, 2, 4\} \rightarrow \frac{4+2+0+0+0+0+2+4}{8}= \boxed{MAD=1.5}$

c. Calculate the means-to-MAD ratio for the two areas of collection

c.1 Purple set:

The ratio is the relationship between the mean and the MAD indicating how many times the first number contains the second, so:

$\frac{\mu}{MAD}= \frac{30}{2}=\boxed{15}$

c.2 Red set:

$\frac{\mu}{MAD}= \frac{36}{1.5}=\boxed{24}$

d. What inference can be made about the areas in regard to weight of dropped elk antlers?

MAD tells us how far, on average, all values are from the middle. So, in the example weight of elk antler pairs at Mount St Helens NVM are, on average, 2 away from the middle. On the other hand, weight of elk antler pairs at Rocky Mountain NP are, on average, 1.5 away from the middle. So, we can assure that elk antler pairs at Rocky Mountain NP weighs more than elk antler pairs at Mount St Helens NVM.

3 0

3 years ago

Which property is shown below?

EastWind [94]

A. Associative Property is your answer

Associative Property states that no matter which terms are within the parenthesis, they will all arrive to the same answer (such as shown above).

hope this helps

8 0

4 years ago

Read 2 more answers