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xeze [42]
3 years ago
9

What is the difference between –4 and 6??

Mathematics
1 answer:
MatroZZZ [7]3 years ago
6 0
The answer would be -10
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Solve the following formula for x y = 7 m x − 8 b
katovenus [111]

Answer: It depends on which variable you're solving for.

Step-by-step explanation:

Solving for b: b=7/8mx + -1/8xy

Solving for m: m=xy+8b

                             ______

                                   7x

Solving for x: x=-8b

                           ___

                          -7m+y

Solving for y: y=7mx-8b

                           ______

                                 x

7 0
2 years ago
Find the x-intercepts of the parabola with vertex (-4,2) and y-intercept (0,-30). Write your answer in this form: (x1, y1),(x2,
Ainat [17]
Vertex form of a parabola 
<span>y = a (x - h)^2 + k </span>

<span>where (h, k) is the vertex </span>
Substituting the values of h and k.
we get, 

<span>y = a(x + 4)^2 + 2 </span>

<span>substituting in the point (0, -30) for  x and  y
</span><span>-30 = a (0 + 4)^2 + 2 

</span>solve for a,

<span>-30 = 16 a + 2 </span>
<span>-32 = 16 a </span>
<span>-2 = a </span>

<span>y = -2(x + 4)^2 + 2 </span>

<span>Put y = 0 </span>

<span>-2 x^2 - 16 x - 30 = 0 </span>
<span>-2(x^2 + 8 x + 15) = 0 </span>
<span>x^2 + 8 x + 15 = 0 </span>
<span>(x + 3)(x + 5) = 0 </span>

<span>x = -3
x = -5</span>
3 0
3 years ago
Pls help need it ASAP can’t figure it out
Pie

Answer:

-25

Step-by-step explanation:

10^2 ÷ -2^2 = -25

That's why the answer is -25.

4 0
2 years ago
Can someone pls help for brainlest
Sav [38]

Answer:

The answer is 74.24 square millimeters

8 0
2 years ago
What is 25% of 200?<br> I need help pleaseeeeeeeeeeeeeee!
victus00 [196]
25/100*200 gives the answer which is 50
8 0
3 years ago
Read 2 more answers
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