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Liula [17]
3 years ago
12

HELp please!!!!!!!!!!!!!!!!!!!!!!11

Mathematics
1 answer:
grandymaker [24]3 years ago
3 0

Answer:

it’s 15x+30y-220

Step-by-step explanation:

Because you distribute and then you add the like terms

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Last one, use trigonometry to help you solve for y given that one side is 4 and there is an angle of 50 degrees.
Ostrovityanka [42]

Answer:

y = 6.22

You can solve this in two ways.

1.) Use SOH CAH TOA:

I typically start off by labeling the sides of the triangle with H (hypotenuse), O (opposite), and A (adjacent). Because I need to figure out what y is when given an angle and 4, I will use CAH, or cosine.

\cos(angle)  =  \frac{adjacent}{hypotenuse}

\cos(50)  =  \frac{4}{y}

\cos(50)  \times y = 4

y =  \frac{4}{ \cos(50) }

y = 6.22

2.) Use Law of Sines:

Solve for the last angle inside the triangle first.

180 - (50 + 90) = 40

Then use the angle you found (40°) in the equation.

\frac{4}{ \sin(40) }  =  \frac{y}{ \sin(90) }

\frac{4}{ \sin(40) }  \times  \sin(90)  = y

y = 6.22

3 0
3 years ago
Write the equation of the line through points (2, 4) and (4, 8)
Vlad [161]
Y = 4x - 4
Hope this helps

7 0
3 years ago
Simplify 3 to the 2nd Power Multiplied by 3 to the 5th Power Multiplied by 3 to the Negative 3rd Power
sweet [91]
The answer is 81.

Hope this helps.
6 0
4 years ago
* Hello I'm giving ALOT of points to the one who can answer this question with an ANSWER & a STEP-BY-STEP EXPLAINATION so th
tangare [24]

Answer:

From the graph and data points, you can observe that Group B has a HIGHER range and has a greater variability. so it's NOT 1. 4. or 3. THEREFORE it's 2.

Explanation:

You start out by finding the mean (finding the sum of the data values and then dividing the sum by the number of data values)

and subtracting the first plot by the last in each graph.

(at least I think)

I've been through this topic. (it was a long time ago since I'm now in highschool so this might be different now as the grading curriculum has changed)

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3 years ago
One the first day he had 575 birds. On the second day he adds a scarecrow and reduces the number of birds by one fifth. How many
velikii [3]
460 birds on the second day
3 0
3 years ago
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