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VARVARA [1.3K]
3 years ago
6

15. Simplify the expression below. Show your work. –(–7y - 24)

Mathematics
2 answers:
Kisachek [45]3 years ago
8 0

–(–7y - 24)

1. distribute the negative

7y+24


hope this is what you were asking.

Alborosie3 years ago
5 0

7y+24 would be the correct answer

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There are 96 people consisting of 48 married couples in a room. Assuming that no husband or wife shakes thr others hand but ever
NikAS [45]

Answer:

4512 handshakes

Step-by-step explanation:

We are told in the question, that there are

96 people in the room = 48 couples

Assuming that no husband or wife shakes each others hand but everyone else shakes hands exactly once

This means

48 couples will shake 94 people because they are excluded

This is calculated as

48 × 94 = 4512 handshakes

6 0
3 years ago
Factor the expression: u·(u−v)+v·(v−u)
kaheart [24]

The answer is: (u - v)^2

5 0
3 years ago
**view image**
vladimir1956 [14]

The chart has been completed in the picture attached.

Step-by-step explanation:

Step 1:

It is given that the number of bacteria doubles every 6 hours.

So if there are 1 million now, in 6 hours there would be double that i.e. 2 million and it will go on.

Step 2:

As the first column says the number of 6-hour periods, the second column is the actual number of hours.

So the second column is multiples of 6 so the second column is filled with;

0, 6, 12, 18, 24, 30, 36, 42 and 48.

Step 3:

The current population is calculated by multiplying the previous population by 2.

For 0 hours, the population = 3 million,

For 6 hours, the population = 2(3) = 6 million,

For 12 hours, the population = 2(6) = 12 million,

For 18 hours, the population = 2(12) = 24 million,

For 24 hours, the population = 2(24) = 48 million,

For 30 hours, the population = 2(48) = 96 million,

For 36 hours, the population = 2(96) = 192 million,

For 42 hours, the population = 2(192) = 384 million, and

For 48 hours, the population = 2(384) = 768 million.

So at the end of 48 hours, there will be approximately 768 million bacteria on the pinhead.

8 0
3 years ago
Which conclusion is supported by the data from the multiple-year samples? Check all that apply
dedylja [7]

Answer:

B and C

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Based on the table of values below, find the slope between points where x = 1 and where x = 4.
Andre45 [30]
\bf \begin{array}{llll}
x&\boxed{1}&3&\boxed{4}\\\\
y&\boxed{8}&6&\boxed{-1}
\end{array}\\\\
-------------------------------\\\\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
&({{ 1}}\quad ,&{{ 8}})\quad 
%   (c,d)
&({{ 4}}\quad ,&{{ -1}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{-1-8}{4-1}\implies \cfrac{-9}{3}\implies -3
7 0
3 years ago
Read 2 more answers
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