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mariarad [96]
3 years ago
11

In the equation 4x2-5x=21, what is the value of b? 4 -5 -21

Mathematics
1 answer:
Aliun [14]3 years ago
7 0
4x^2-5x-21 is of the form ax^2+bx+c, a quadratic equation.

so b in this case is -5
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which equations are equivalent to 3/4+m=-7/4 check all that apply m=10/4 m=-10/4 m=-5/2 11/4+m=-1/4 -5/4+m=-15/4 m+2=-0.5 Help f
Alecsey [184]

Answer:

The correct choices are; B,C,E, and F.

Step-by-step explanation:

The given equation is;

\frac{3}{4}+m=-\frac{7}{4}

We solve for m to obtain:

m=-\frac{7}{4}-\frac{3}{4}=-2.5

We also solve the remaining equations to see which ones give the same result.

A: m=\frac{10}{4} =2.5

B:m=-\frac{10}{4} =-2.5

C:m=-\frac{5}{2} =-2.5

D: \frac{11}{4}+m=-\frac{1}{4}

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m=-\frac{15}{4}+\frac{5}{4}=-2.5

F: m+2=-0.5

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The equivalent equations are; B,C,E, and F.

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