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VashaNatasha [74]
3 years ago
8

Helpppppppppp mehhhhh plz

Mathematics
1 answer:
Goshia [24]3 years ago
4 0
Let's start off with a simple y-intercept form.

y=mx + b
b represents the y intercept so we can substitute it with 2.
y = mx + 2
the point we are given, (1,1) is really just an x and y value. We can also substitute this into the equation.
y = x + 2

Now that we have some type of equation, we can convert it to the form shown in the answer choices by subtracting y from both sides.
0 = x - y + 2
Hope this helps!
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This is my last question please help !
chubhunter [2.5K]

Answer:

try the third option

Step-by-step explanation:

At least I'm trying

8 0
3 years ago
Please help me with this homework
Tresset [83]
Hmmm... Maybe divide all the numbers by four and if u get an event number, then that will be your answer!!!
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Car A travels 20 mph faster than Car B. In the same time that Car A travels 252 miles, Car B travels 196 miles. Find their speed
RoseWind [281]

<u>Answer:</u>

A = 70

B = 90

<u>Step-by-step explanation:</u>

We know that Car A travels 20 mph faster than Car B.

Assuming the speed of Car B to be x and the speed of Car A to be x+20, we can write:

\frac{196}{x} =\frac{252}{x+20}

Taking the reciprocal of both sides to make x the subject:

196(x+20)=252x

196x+3920=252x

252x-196x=3920

56x=3920

x=70 ---> speed of Car A

Finding the speed of Car B: x+20 = 70+20=90

Therefore, the speed of Car A = 70 and the speed of Car B = 90.

8 0
3 years ago
Which is equivalent to 1.04?
Elodia [21]

Answer:

104/100 is equivalent to 1.04

Step-by-step explanation:

7 0
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F(x)=-x^2+8x+15 ...?
rusak2 [61]
Here i how I would do it:<span>f(x)=−<span>x2</span>+8x+15</span>
set f(x) = 0 to find the points at which the graph crosses the x-axis. So<span>−<span>x2</span>+8x+15=0</span>
multiply through by -1<span><span>x2</span>−8x−15=0</span> <span>(x−4<span>)2</span>−31=0</span> <span>x=4±<span>31<span>−−</span>√</span></span>
So these are the points at which the graph crosses the x-axis. To find the point where it crosses the y-axis, set x=0 in your original equation to get 15. Now because of the negative on the x^2, your graph will be an upside down parabola, going through<span>(0,15),(4−<span>31<span>−−</span>√</span>,0)and(4+<span>31<span>−−</span>√</span>,0)</span>
To find the coordinates of the maximum (it is maximum) of the graph, you take a look at the completed square method above. Since we multiplied through by -1, we need to multiply through by it again to get:<span>f(x)=31−(x−4<span>)2</span></span><span>
Now this is maximal when x=4, because x=4 causes -(x-4)^2 to vanish. So the coordinates of the maximum are (4,y). To find the y, simply substitute x=4 into the equation f(x) to give y = 31. So it agrees with the mighty Satellite: (4,31) is the vertex.</span>
8 0
3 years ago
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