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3 years ago

10

Mathematics

2 answers:

shutvik [7]3 years ago

6 0

Answer:15

Step-by-step explanation:

pshichka [43]3 years ago

3 0

The answer is 15 hope it helps

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Just need help with questions 11 and 12 need help fast

bulgar [2K]

You can see if their angles are equal to each other

5 0

4 years ago

Help please!!!!!!!!!!!!!

n200080 [17]

Answer:

A. Nothing, Paul is correct

Step-by-step explanation:

Tangent to a circle is a line that touches the circle at one point. At the point of contact, tangent to a circle is always perpendicular to the radius.
If two tangents are drawn from a common external point to a circle, then the two tangents have equal tangent segments.
Tangent segment means line joining to the external point and the point of contact to the circle.

7 0

4 years ago

Can someone please help me with these questions?

nikitadnepr [17]

QUESTION 1

The given function is

$y = - 6x - 13$

The domain of this function refers to all values of x for which y is defined.

The given function is defined for all real values of x.

The domain is all real numbers.

The correct answer is A

QUESTION 2

The equation in column 1 is

$y = - 2 {x}^{2} - 4x + 12$

We obtain the vertex form as follows;

$y = - 2( {x}^{2} + 2x) + 12$

$y = - 2( {x}^{2} + 2x + {1}^{2}) - - 2 {(1)}^{2} + 12$

$y = - 2({(x + 1)}^{2}) + 2 + 12$

$y = - 2({x + 1)}^{2} + 14$

The x-value of the vertex is -1.

The equation in column 2 is

$y = {x}^{2} - 4x + 3$

We can also find the x-value of the vertex using the formula,

$x = - \frac{b}{2a}$

$x = - \frac{ - 4}{2(1)}$

$x = 2$
The correct answer is

B) The value found in column #1 is less than the value found in column #2

QUESTION 3

The height of the ball is modeled by

$h(t) = - 16 {t}^{2} + 64t$
where t equals the time in seconds and h(t) represents the height of the ball at time t seconds.

The axis of symmetry can be found using the formula,

$t = - \frac{b}{2a}$

$t = - \frac{ 64}{2( - 16)}$

$t = 2$

The correct answer is

A) t=2; it takes 2 seconds to reach maximum height and 2 seconds to fall back to the ground

QUESTION 4

The equation of axis of symmetry is given by the formula,

$x = - \frac{b}{2a}$

For the axis of symmetry of a given quadratic function to be zero, then the b-value of quadratic function should be zero.

The only equation from the given options whose b-value is zero is

$y = {x}^{2} + 2$

The axis of symmetry is

$x = - \frac{0}{2(1)}$

$x = 0$

The correct answer is C

3 0

3 years ago

What triangle is formed by the points (3,2), (4,7), and (5,6)?

Sophie [7]

Answer:

Scalene Triangle

Step.-by-step explanation:

Calculate the lengths of the sides:

Side 1 = √((4-3)^2+(7-2)^2) = √26.

Side 2 = √((6-7)^2+(5-4)^2) = √2.

Side 3 = √((6-2)^2+(5-3)^2) = √20.

So each side is different in length and so its a scalene triangle.

5 0

3 years ago

A Pearson correlation (symbolized by the letter r) is normally used to summarize the association, or correlation, between two va

avanturin [10]

Answer:

False

Step-by-step explanation:

We are given the following in the question:

Pearson correlation = 1.30

Pearson coefficient:

The range of Pearson coefficient is from [-1,1]
A positive correlation means that an increase in one quantity leads to an increase in another quantity
A negative correlation means with increase in one quantity the other quantity decreases.
+1 tells about a a perfect positive linear relationship and −1 indicates a perfect negative linear relationship.

Since, the given coefficient of Pearson does not lies in the range, it cannot express relation between two quantities.

Thus, a value of 1.30 does not indicates a strong correlation.

Thus, the given statement is false.

5 0

3 years ago