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Semmy [17]
3 years ago
9

Help pls fast and give me the steps -15a-19-35=-84

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
8 0

Answer:

a=2

Step-by-step explanation:

-15a-19-35=-84

-15a-19=-49

-15a=-30

a=2

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Equation for ( 6, 13) ( 7900, 5 )
tia_tia [17]

For this case we have that by definition, the equation of the line in the slope-intersection form is given by:

y=mx+b

Where:

m: It is the slope of the line

b: It is the cut-off point with the y axis

We have the following points through which the line passes:

(x_ {1}, y_ {1}) :( 6,13)\\(x_ {2}, y_ {2}): (7900,5)

We find the slope of the line:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {5-13} {7900-6} = \frac {-8} {7894} = - \frac {4} {3947}

Thus, the equation of the line is of the form:

y = - \frac {4} {3947} x + b

We substitute one of the points and find b:

13 = - \frac {4} {3947} (6) + b\\13 = - \frac {24} {3947} + b\\13+ \frac {24} {3947} = b\\b = \frac {51335} {3947}

Finally, the equation is:

y = - \frac {4} {3947} x + \frac {51335} {3947}

Answer:

y = - \frac {4} {3947} x + \frac {51335} {3947}

5 0
3 years ago
Find the area of a circle with a diameter of 16.
tangare [24]

Answer:

Step-by-step explanation:

Area of circle:

<em>area = π · r · r</em>

<em>Radius=  </em>\frac{16}{2}= 8

3.14\times { 8  }^{ 2  } = 200.96 cm^2\\

<em></em>

8 0
2 years ago
Can someone help me solve this question? It’s similar to the previous ones! Thank you!
luda_lava [24]

Answer:

\boxed{\sf \ \ \ (-2x+-9)(1x+3)=-2x^2-15x-27 \ \ \ }

the coefficient c is -27

Step-by-step explanation:

hello

(-2x+-9)(1x+3)=(-2x-9)(x+3)=-2x(x+3)-9(x+3)=-2x^2-6x-9x-27\\=-2x^2-15x-27

hope this helps

8 0
3 years ago
1. What was the second of two crucial events that increased U.S. concerns about the spread of
sineoko [7]
1. the answer is D 
2. You are correct it is vietnam
3. the answer is 1947
4 0
3 years ago
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A car company charges a $45 fee to use their vehicle. They also charge an additional $0.35 per mile write a function that models
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.35x+45=y
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