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Vesna [10]
3 years ago
14

Help with 12 ASAP!! Hehkehkyegykegktkbetkbwtkwvtkhtekethkhwtktbw I don’t understand!!

Mathematics
1 answer:
Sever21 [200]3 years ago
7 0
2.3
2 4/5 = 2.8
2.6

least to greatest : 2.3, 2.6, 2 4/5

I find that if u turn them into decimals, it is easier to compare them
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Kitty [74]
I think it is B -2 < x < 2
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2 years ago
Naomi plans to attend a four-year college that costs a total of $21,800 per year. Her family invests $9,500 in an account that e
ki77a [65]

Answer:

its on google

Step-by-step explanation:

5 0
3 years ago
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The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by: P(c) = -12c^2
Ksenya-84 [330]

Answer:

The maximum power generated by the circuit is 300 watts.

Step-by-step explanation:

A quadratic function is one that can be written as an equation of the form:

f (x) = ax² + bx + c

where a, b and c (called terms) are any real numbers and a is nonzero.

In this case, f(x) is P(c) [the power generated], x is the current c (in amperes), a = -12, b = 120 and c = 0.

The vertex is a point that is part of the parabola, which has the value as ordered  minimum or maximum function. If the scalar a> 0, the parabola opens or faces up and the vertex is the minimum of the function. In contrast, if a <0, the parabola opens downward and the vertex is the maximum of the function.

The calculation of the vertex, which in this case will be the maximum of the function, is carried out as follows:

  • The value of x, in this case the value of current c in amperes, can be calculated with the formula c=\frac{-b}{2*a} . In this case: c=\frac{-120}{2*(-12)} So c= 5 amperes. The current is 5 amperes.
  • The value of y, in this case the value of the electric current in watts, is obtained by substituting the value of c previously obtained in the function. In this case: P(5)= -12*5²+120*5. So P(5)= 300 watts

<u><em>The maximum power generated by the circuit is 300 watts.</em></u>

7 0
3 years ago
Solve by the substitution method. Show your work for full credit.<br> y = 3x – 12<br> 2x – 3y = -13
denis23 [38]
Hello
y=3x-12
2x-3(3x-12)=-13
==>2x-9x+36=-13
==>-7x=-49
==>x=7
y=3*7-12
==>y=9

4 0
3 years ago
Solve 1/3x-6=2/3. answer plz
MaRussiya [10]

Answer: -16

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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