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Anuta_ua [19.1K]
3 years ago
15

Y=−5x2+ 6x− 3 y=−4x− 3 using elimination or subsutution

Mathematics
2 answers:
Elena-2011 [213]3 years ago
4 0

Step-by-step explanation:

My math is terrible but I think u should eliminate and substitute.

Irina-Kira [14]3 years ago
3 0

I think the answer is:2x-4y=13

START BY USING BODMAS

  1. <em>Brackets</em>
  2. <em>of</em>
  3. <em>division</em>
  4. <em>multiplication</em>
  5. <em>addition</em>
  6. <em>subtraction</em>

<em>y</em><em>=</em><em>-</em><em>(</em><em>10</em><em>)</em><em>+</em><em>6</em><em>x</em><em>-</em><em>3y</em><em>=</em><em>-</em><em>4x</em><em>-3</em>

<em>{</em><em>3</em><em>+</em><em>10</em><em>=</em><em>13</em><em>}</em>

<em>{</em><em>3y</em><em>+</em><em>y</em><em>=</em><em>4y</em><em>}</em>

<em>{</em><em>6x</em><em>-4x</em><em>=</em><em>2x</em><em>}</em>

<em>4y</em><em>=</em><em>+</em><em>2x</em><em>-13</em>

<em>=</em><em>2x</em><em>-4y</em><em>=</em><em>13</em><em> </em>

<em>I'M</em><em> </em><em>NOT</em><em> </em><em>SURE</em><em> </em><em>OF</em><em> </em><em>THE</em><em> </em><em>ANSWER</em><em> </em><em>THOUGH</em>

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The middle note C has a frequency of 262 hertz and can be modeled using a sine function with an amplitude of 1.5, where x is tim
MrRissso [65]

Answer:  f(x) = 1.5*sin(x*2*pi/0.0038s)

Step-by-step explanation:

A sine function is:

f(x) = A*sin(c*x + f)

Where A is the amplitude, we know that it is 1.5

c is a constant that depends on the frequency.

f is a phase.

As there is no mention of a phase, we can assume f = 0.

Then our function is:

f(x) = 1.5*sin(c*x)

now let's find the value of c.

We know that the frequency is 262hz.

Then the period can be calculated with the equation:

T = 1/f.

T = 1/262 Hz = 0.0038 seconds.

Now, the period of a sin function is 2*pi.

whit pi = 3.14159265358979.....

Then we have that:

sin(0) = sin(c*0.0038s)

sin(0) = sin(2*pi)

then:

c*0.0038s = 2*pi

c = 2*pi/0.0038s

Then the function is:

f(x) = 1.5*sin(x* 2*pi/0.0038s)

3 0
3 years ago
Read 2 more answers
What is 3 4/8-2 6/8= but in a fraction way
Veronika [31]
For 2 6/8 it is 22/8 and for 3 4/8 it is 28/8 and if you subtract them it would be 6/8
hope this helps!



3 0
3 years ago
Read 2 more answers
A pizza restaurant is located in a town with a population density of 1000 people per square mile. What delivery radius will allo
erastova [34]

The delivery radius which will allow the pizza restaurant to deliver to approximately 20,000 people is 2. 5 miles

<h3>What is population density?</h3>

Population density can be defined as the number of individuals within a species in a specific geographic area.

The formula for population density is expressed as;

Population density = Number of people/Land area

Where;

  • Number of people = 20000
  • Population density = 1000

Land area = 20000/ 1000

Land area = 20 square miles

But ;

Area = πr²

Substitute the value of area in the formula

20 = 3. 142 × r²

r² = 20/ 3. 142

r² = 6. 37

r  = √6. 37

r = 2. 5 miles

Thus, the delivery radius which will allow the pizza restaurant to deliver to approximately 20,000 people is 2. 5 miles

Learn more about population density here:

brainly.com/question/13902749

#SPJ1

4 0
1 year ago
Find the measure of the missing angle using the triangle angle sum theorm.
3241004551 [841]
A triangle is always 180 degrees so if we add 127+20 we’d get 147. 180-147 is 33 degrees. the missing angle is 33
8 0
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Andrea has a yard shaped like parallelogram ABCD. The garden area, parallelogram EFGB, has an area of 105 ft2004-05-02-04-00_fil
Lynna [10]

The area of a parallelogram is simply calculated using the formula:

A = b * h

Where,

b = length of the base = 45 ft

h = height which is perpendicular to the base = 21 ft

Using the formula, we calculate the total area of the yard.

A = b* h

A = 45 ft * 21 ft

A = 945 ft^2

Now we don’t want to sod the Garden area for the most obvious reason. The garden has an Area of 105 ft^2, we subtract this to the total area giving us,

Area to sod = 945 ft^2 – 105ft^2

<span>Area to sod = 840 ft^2</span>

5 0
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