3 years ago

Identify the number of decimal places in each factor.

Mathematics

1 answer:

const2013 [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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Luba_88 [7]

The first two is wrong, the last two is one of the right ones, I think it’s c

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3 years ago

Find the x-intercepts for the parabola defined by the equation below. y = 3x2 + 18x + 15

Readme [11.4K]

Using quadratic formula
x = [-18 +-sq root (324 -4 *3*15)] / 2*3
x = [-18 +-sq root (144)]/6
x1 = (-18 + 12) / 6 = -1
x2 = (-18 -12) / 6 = -30/6 = -5

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3 years ago

A building is 70 feet tall. A blueprint of the building represents that length as 7 inches. What is the scale of the blueprint

matrenka [14]

Answer:

The scale of the blueprint is 10x smaller

Step-by-step explanation:

Divide. 70 divided by 7 is 10

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3 years ago

Solve the exponential equation. 8x = 1/4 -2 -2/3 2/3

Karolina [17]

Answer:

$\large\boxed{x=-\dfrac{2}{3}}$

Step-by-step explanation:

$8^x=\dfrac{1}{4}\\==============\\\\8=2^3\\\\\dfrac{1}{4}=\dfrac{1}{2^2}=2^{-2}\\\\===============\\\\(2^3)^x=2^{-2}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\2^{3x}=2^{-2}\iff3x=-2\qquad\text{divide both sides by 3}\\\\x=-\dfrac{2}{3}$

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3 years ago

Graph the set of points. Which model is most appropriate for the set?

Mila [183]

Answer:

A. quadratic

Step-by-step explanation:

the four points forms a curve that is parallel (parabola). quadratic is the shape of a curve like that

and exponential is only a curve

linear is like a straight line

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3 years ago