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3 years ago

PLS HELP ASAP

Mathematics

2 answers:

cestrela7 [59]3 years ago

8 0

Here is a video that can also explain this question

Lunna [17]3 years ago

6 0

Answer: 75°

Since the acute angle is measured between the angles of 0° and 90°, 75° is inbetween those specified numbers meaning it can be an acute angle

Step-by-step explanation:

Acute angles come facing all different directions, different degrees, and even different sizes, but the one thing that they all have in common is that they measure less than 90°. You can use a protractor to measure the angle to be sure the angle is less than 90°

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Explain why the graphing calculator cannot be used to solve or approximate solutions to all polynomial equations.

Lelu [443]

Let's put it this way: If you plot a few non-x-intercept points and then draw a curvy line through them,you will not know if you got the x-intercepts even close to being correct. <span>The only way you can be sure of your x-intercepts is to set the quadratic equal to zero and solve. So its a matter of guessing from the pictures. Basicaly said, the calculator won't give you the exact result.</span>

4 0

4 years ago

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Lisa, a researcher at the Centers for Disease Control and Prevention, is studying the growth of a bacteria. She starts her exper

goblinko [34]

Answer:

776

Step-by-step explanation:

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3 years ago

The range of y = - 32x ^ 2 + 90x + 3

mariarad [96]

Given:

The given function is:

$y=-32x^2+90x+3$

To find:

The range of the given function.

Solution:

We have,

$y=-32x^2+90x+3$

It is a quadratic function because the highest power of the variable x is 2.

Here, the leading coefficient is -32 which is negative. So, the graph of the given function is a downward parabola.

If a quadratic function is $f(x)=ax^2+bx+c$ , then the vertex of the quadratic function is:

$Vertex=\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)$

In the given function, $a=-32,b=90,c=3$ .

$\dfrac{-b}{2a}=\dfrac{-90}{2(-32)}$

$\dfrac{-b}{2a}=\dfrac{-90}{-64}$

$\dfrac{-b}{2a}=\dfrac{45}{32}$

The value of the given function at $x=\dfrac{45}{32}$ is:

$y=-32(\dfrac{45}{32})^2+90(\dfrac{45}{32})+3$

$y=\dfrac{2121}{32}$

The vertex of the given downward parabola is $\left(\dfrac{45}{32},\dfrac{2121}{32}\right)$ . It means the maximum value of the function is $y=\dfrac{2121}{32}$ . So,

$Range=\left\{y|y\leq \dfrac{2121}{32}\right\}$

$Range=\left(-\infty, \dfrac{2121}{32}\right ]$

Therefore, the range of the given function is $\left (-\infty, \dfrac{2121}{32}\right ]$ .

8 0

3 years ago

A survey was done that asked people to indicate whether they preferred to ride a street bike or a mountain bike.

tigry1 [53]

Answer : option d

The results of the survey are shown in the two-way table.

To determine the relative frequency of a person over 30 years old who prefers to ride a mountain bike, we look at the data given for mountain bike that is over 30 years old

Over 30 years old, mountain bike is 26

Now we add all the data given in the table and divide 26 by total to get relative frequency

58 + 164 + 216 + 26 = 463

Relative frequency (over 30 years 0ld ) = $\frac{26}{463}$

So answer is divide 26 by 463

6 0

4 years ago

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3. During a particular year, 42 graduating boys chose to attend a 4-year college,

Mama L [17]

Answer:

girls are more likely to choose a 4-year college, while boys are more likely to choose a 2-year college

Step-by-step explanation:

hope this helps :]

3 0

3 years ago