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andreyandreev [35.5K]

3 years ago

8

The table shows the current grades in one of the math classes and one of the science classes at a local high school. Find P(grad

e of B | science class).

2 answers:

Alenkinab [10]3 years ago

8 0

Hey, did you ever figure it out?

max2010maxim [7]3 years ago

4 0

Answer:

.667

Step-by-step explanation: 8/12 i may be wrong but 0.154 is def wrong

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21. For the following exercises, use the descriptions of each pair of lines given below to find the slopes of Line 1 and Line 2.

dybincka [34]

Answer:

The given lines are perpendicular.

Step-by-step explanation:

In the question, two lines are given as line 1 passes through (1,7) and (5,5). Whereas, line 2 passes through (-1,-3) and (1,1).

It is required to find the slope of given lines and figure out whether they are perpendicular, parallel or neither.

To solve this question, first find the slope of both lines. Check if their product is equal to -1, then they are perpendicular. If the slopes are equal the lines are parallel.

Step 1 of 2

Find the slope of first line.

$\begin{aligned}m_{1} &=\frac{5-7}{5-1} \\m_{1} &=\frac{-2}{4} \\m_{1} &=-\frac{1}{2}\end{aligned}$

Step 2 of 2

Find the slope of first line.

$\begin{aligned}&m_{2}=\frac{1-(-3)}{1-(-1)} \\&m_{2}=\frac{4}{2} \\&m_{2}=2\end{aligned}$

And

$\begin{aligned}&m_{1} m_{2}=-\frac{1}{2}(2) \\&m_{1} m_{2}=-1\end{aligned}$

Since, both slopes are reciprocal of each other.

Therefore, the lines are perpendicular.

6 0

2 years ago

a person bought 8 items at a market and received $8 in change. if each item was priced at $4, how much did the person give the v

mariarad [96]

If a person bought 8 items and each item was priced at $4, that means the total amount spent was $32.

$(8)(4)=32$

The person received 8 dollars in change. This means that the person payed 8 dollars more than what they spent. Well, we just found out how much they spent, so we can find out how much money the person gave the vendor.

Let p = amount of money paid by the person.

$32+8=p$

$p=40$

The person gave the vendor $40.

3 0

3 years ago

Digby wants to determine how many calories are in his bag of chips. Which calorimeter should he use?

KiRa [710]

Answer:

b. bomb calorimeter

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers

A metric unit of length that is equal to one thousandth of a meter is.......

12345 [234]

The metric unit of length that is equal to one thousandth of a meter is a millimeter. 1 meter = 1000 millimeter

hope this helps

3 0

4 years ago

Read 2 more answers

Find both inequality 2c-7\>9 and 5d+7/<32

solong [7]

2c -7 >= 9

2c >= 16

c >= 8

5d + 7 <= 32

5d <= 25

d <= 5

normal arthematic except diving over -1 or flipping (taking inverse -1) flips the operator

3 0

3 years ago