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3 years ago

Help me please i need help

Mathematics

2 answers:

Lana71 [14]3 years ago

8 0

Answer:

k= 70

Step-by-step explanation:

Otrada [13]3 years ago

4 0

K=77-7
K=70
:)))))))))

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Match the change in position of the minute hand with the angle made by the changes.

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One of the quarterbacks last weeks completed 24 out of 30 passes. If he continues that trend this week and he throws the ball 40

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3 years ago

H(x)=-x^2+6x. So what is the value of h(2)

crimeas [40]

✩ Answer:

✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:*

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✩ Step-by-step explanation:

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✺ Quadratic polynomials can be factored using the transformation $ax^2+bx+c=a(x-x_{1})(x-x_{2} )$ , where $x_{1}$ and $x_{2}$ are the solutions of the quadratic equation $ax^2+bx+c=0$ :

$-x^2+6x=0$

✺ All equations of the form $ax^2+bx+c=0$ can be solved using the quadratic formula:

$-b=\frac{+}\\\sqrt{b^2-4ac}\\~~~~~~~~~~~~~2a$

✺ The quadratic formula gives two solutions, one when ± is addition and one when it is subtraction:

$x=\frac{\sqrt{-6\frac{+}\\\sqrt{6^2}}}{2(-1)}$

✺ Take the square root of $6^2$ :

$x=\frac{\sqrt{-6\frac{+}\\{6}}}{2(-1)}$

✺ Multiply $2$ times $-1$ :

$x=\frac{\sqrt{-6\frac{+}\\{6}}}{-2}$

✺ Now solve the equation $x=\frac{\sqrt{-6\frac{+}\\{6}}}{-2}$ when ± is plus. Add $-6$ to $6$ :

$x=\frac{0}{-2}$

✺ Divide $0$ by $-2$ :

$x=0$

-OR-

✺ Now solve the equation $x=\frac{\sqrt{-6\frac{+}\\{6}}}{-2}$ when ± is minus. Subtract $6$ from $-6$ :

$x=\frac{-12}{-2}$

✺ Divide $-12$ by $-2$ :

$x=6$

✺ Optional : Factor the original expression using $ax^2+bx+c=a(x-x_{1})(x-x_{2} )$ . Substitute $0$ for $x_{1}$ and $6$ for $x_{2}$ :

$-x^2+6x=-x(x-6)$

✩ Answer:

✺ Factored Form: $x(x-6)$

✺ Exact Form: $x=6$

✺ Graph Point Form: $x=(6,0)$

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4 years ago

At Northside Middle School, 30 students were surveyed about their favorite type of music. If 2/5 of students surveyed prefer pop

gregori [183]

Answer: 18 students do NOT prefer pop music.

Explanation: 2/5 of 30 students do PREFER pop music, that means the rest, which is 3/5, does NOT prefer pop music
3/5 of 30 is 18
30 divided by 5 x 3 = 18
You can trust this answer
Goodluck!

3 0

3 years ago