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Nuetrik [128]
3 years ago
11

28x^2 - 5x - 3 = 0 what is the answer

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

x=

3 /7

or x=

−1 /4

Step-by-step explanation:

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Evaluate the integral x^3 (x 4 −8)^44 dx by making the substitution u = x^4 - 8
Eduardwww [97]

Answer:

(x^4-8)^45 /180 +c

Step-by-step explanation:

If u=x^4-8, then du=(4x^3-0)dx or du=4x^3 dx by power and constant rule.

If du=4x^3 dx, then du/4=x^3 dx. I just divided both sides by 4.

Now we are ready to make substitutions into our integral.

Int(x^3 (x^4-8)^44 dx)

Int(((x^4-8)^44 x^3 dx)

Int(u^44 du/4)

1/4 Int(u^44 dul

1/4 × (u^45 / 45 )+c

Put back in terms of x:

1/4 × (x^4-8)^45/45 +c

We could multiply those fractions

(x^4-8)^45 /180 +c

5 0
3 years ago
Solve the equation for a.
nataly862011 [7]

Answer:

a=-7.68

Step-by-step explanation:

3a+13.61=-9.43

               -13.61

_____________

               -23.04

3a=-23.04

-23.04/3= -7.68

7 0
3 years ago
The ratio of white socks to brown socks is <br> PLZ HELP ASAP
Alex73 [517]

Answer:

0.875 is the ratio from white to brown socks.

6 0
3 years ago
An example of coefficient math problem
spayn [35]
The number that is being multiplied by the variable ( the letter) so like if you have 2X the 2 is the coefficient
8 0
3 years ago
12. What is the solution of the system of equations?
Nina [5.8K]

Answer:

no solution

Step-by-step explanation:

Hi there!

We are given this system of equations:

y=-2x+5

y=-2x+20

and we want to find the solution (the point in which the lines intersect)

There are 3 ways to solve a system, but let's use substitution in this case

Both equations are set to y, so they should be equal to each other via a property known as transitivity (if a=b and b=c, then a=c)

-2x+5=-2x+20 (the same as y=y)

Now let's solve for x

add 2x to both sides

5=20

In this case, we got an untrue statement. If this happens, then the lines won't intersect.

If they won't intersect, there's <u>no solution </u>

Hope this helps!

6 0
3 years ago
Read 2 more answers
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