Find the y-intercept of the line: 4x−2y+7=0

A solution that is used to kill bacteria is tested. This solution kills the following percentage of bacteria in six trials: 85,

Paha777 [63]

80,84,85,86,87,90

minimum = 80
Q1 = 84
Q2 (median) = (85 + 86) / 2 = 171/2 = 85.5
Q3 = 87
maximum = 90
Q1 Q2 Q3
^___^_______^
--80-----| ___|_______ | -----90
^ ^ ^
84 85.5 87

80, minimum, is on outside of box (before Q1)......84 (Q1) is where box starts.....85.5 (median or Q2) is inside the box.....87 (Q3) is the end of the box......90, maximum, is outside the box (after Q3)

6 0

3 years ago

Two Friends share 7 cookies equally.how many cookies does each Freind get ? Fraction form

shtirl [24]

The answer to your question is 3 1/2

7 0

3 years ago

Read 2 more answers

Answer plz this is on khan academy

Vera_Pavlovna [14]

Answer:

A

Step-by-step explanation:

This graph represents the inequality x < 2. you may be confused as to why the answer is not x ≤ 2, but the circle at the start of the line is not shaded in. This tells us that an answer to this inequality cannot be x

7 0

3 years ago

Which statement explains the difference between a line and a segment?

Mekhanik [1.2K]

Answer:

A

Step-by-step explanation:

7 0

3 years ago

The triangles are similar. What is the value of x? Enter your answer in the box. x = two right triangles. the larger triangle ha

grandymaker [24]

<h2>Answers:</h2>

These problems can be solved by the Thales’s Theorem, which states:

Two triangles are similar when they have equal angles and proportional sides

In addition, if two triangles are similar, their angles are similar as well. This means that the relation between two sides of the big triangle is equal to the relation between two sides of the small triangle, as follows:

$\frac{B}{A}=\frac{b}{a}$

Knowing this, lets’s begin with the answers:

1. For this first problem, see the first figure attached. There are shown the two triangles, and we are told both are similar, this means (according the prior explanation above) that we can use the Thale’s Theorem to find $x$ .

Therefore, we can establish a relation between two sides of the big triangle which is equal to the relation between two sides of the small triangle; in this case let’s use $B$ and $C$ for the first triangle and $b$ and $c$ for the second:

$\frac{C}{B}=\frac{c}{b}$

$\frac{6x+28}{96}=\frac{25}{24}$

Now we find $x$ :

$6x+28=\frac{(25)(96)}{24}$

$6x+28=100$

$6x=100-28$

$x=\frac{72}{6}$

$x=12$

Finally, the value of $x$ is 12 units.

2. For this problem, see the second figure attached. In order to find the values of the segments BE and EC, we will use two sides of each triangle (ABE and DCE) according to the Thale’s Theorem:

For the segment BE:

$\frac{BE}{10}=\frac{x+3}{4}$