Please please please help me thanks

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

5 0

Answer:

1. 57 2. 81

Step-by-step explanation:

71x2=142 256-142=114/2= 57

5103/63= 81

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3 years ago

A substance has a density of 0.70 g/mL, if it has a volume of 3.0 mL, what is its mass?

Naddika [18.5K]

Answer:

Step-by-step explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

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3 years ago

Given a quadratic function in vertex form:

Alja [10]

Answer:

See below

Step-by-step explanation:

A vertical stretch takes place when $a\cdot f(x)$ given that $|a| > 1$

A vertical compression takes place when $a\cdot f(x)$ given that $0 < |a| < 1$

A vertical stretch is different than a horizontal compression:

In a vertical stretch, the input stays the same, but the output is multiplied by the scale factor
In a horizontal compression, the output stays the same, but the input is multiplied by the scale factor

A reflection across the x-axis means that the output, our y-variable, is the opposite sign. This means that all values of $a$ must be negative such that $a\cdot f(x)$ as mentioned in parts A and B. Also, in part C, since our scale factor is negative, the output is the only one being multiplied by the scale factor.