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3 years ago

Its 94 i said it first tho so does that mean i get brainliest

Mathematics

1 answer:

Softa [21]3 years ago

3 0

Answer:

YA if you said it first ya you are supposed to get brainlies ONLY if the question says will give brainliest if your right

Step-by-step explanation:

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If three corresponding sides of one triangle are proportional to three sides of another, then the triangles are similar. always

mezya [45]

<span>If three sides are proportional their angles must be identical therefore they are always similar.</span>

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3 years ago

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What are rational and irrational numbers ?

lbvjy [14]

Rational: Any number that can be expressed as a fraction (or a ratio.)
Irrational: Not rational, any number that can't be written down as a fraction. Some examples include $\pi (3.1415926...)$ , $\sqrt{2}$ , and so on.

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Given the function g(x) = 6^x, Section A is from x = 1 to x = 2 and Section B is from x = 3 to x = 4.

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Section A and B
$\frac{36 - 6}{2 - 1} = 30 \\ \frac{1296 - 216}{4 - 3} = 1080$

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4 years ago

Alex has saved $776 at the bank. He wants to save $3620 for a trip to California. What

Feliz [49]

Answer:

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Step-by-step explanation:

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3 years ago

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Write an equation of a parabola that passes through (3,-30) and has x-intercepts of -2 and 18. Then find the average rate of cha

Nookie1986 [14]

Answer:

The equation of the parabola is $y = \frac{2}{5}\cdot x^{2}-\frac{32}{5}\cdot x -\frac{72}{5}$ . The average rate of change of the parabola is -4.

Step-by-step explanation:

We must remember that a parabola is represented by a quadratic function, which can be formed by knowing three different points. A quadratic function is standard form is represented by:

$y = a\cdot x^{2}+b\cdot x + c$

Where:

$x$ - Independent variable, dimensionless.

$y$ - Dependent variable, dimensionless.

$a$ , $b$ , $c$ - Coefficients, dimensionless.

If we know that $(3, -30)$ , $(-2, 0)$ and $(18, 0)$ are part of the parabola, the following linear system of equations is formed:

$9\cdot a +3\cdot b + c = -30$

$4\cdot a -2\cdot b +c = 0$

$324\cdot a +18\cdot b + c = 0$

This system can be solved both by algebraic means (substitution, elimination, equalization, determinant) and by numerical methods. The solution of the linear system is:

$a = \frac{2}{5}$ , $b = -\frac{32}{5}$ , $c = -\frac{72}{5}$ .