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Ainat [17]
3 years ago
10

the product of 4 numbers,a,b,c,and d, is a negative number the table shows one combination of positive and negative signs of the

four numbers that could produce a negative product.complete the table to show seven other possible combinations.
Mathematics
1 answer:
ser-zykov [4K]3 years ago
7 0
<span>When you multiply numbers, two negative signs cancel each other out. Therefore if four of the numbers are negative the product is positive. If either one or three numbers are negative, the product is negative.
   
1.a negative, b positive, c positive, d positive
   
2.a positive, b negative, c positive, d positive
   
3.a positive, b positive, c negative, d positive
   
4.a positive, b positive, c positive, d negative
   
5.a positive, b negative, c negative, d negative
   
6.a negative, b positive, c negative, d negative
   
7.a negative, b negative, c positive, d negative
   
8.a negative, b negative, c negative, d positive</span>
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Solve #2 with an explanation please
KatRina [158]
The fence is 210 ft long.
There is a post every 3.5 ft.
If you divide 210 ft by 3.5 ft, you get the number of spaces between posts.
(210 ft)/(3.5 ft) = 60
The fence starts with a post. Then there is 3.5 ft of fencing. Then there is another post. Then there is another 3.5 ft of fencing followed by a post. In total there are 61 posts.

Here's another way of thinking of why you end up with 60 posts.
For each 3.5 ft of fencing, you place a post at the end of the fencing.
Since there are 60 3.5-ft-long pieces of fencing, there will be 60 posts, one at the end of each piece of fencing. The first thing that is done is to put the initial post before any fencing is put up. The first post plus 60 more posts add up to 61 posts.

Now that you see why there are 61 posts, we can calculate their cost.
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5 0
3 years ago
A line contains the point (4, 2) and has a slope of −3.
Naya [18.7K]

Answer: the equation is y = - 3x + 14

Step-by-step explanation:

The equation of a straight line can be represented in the slope intercept form as

y = mx + c

Where

c represents the y intercept

m represents the slope of the straight line.

The slope of the given line is - 3 and it contains the point (4, 2)

To determine the y intercept, we would substitute m = - 3, x = 4 and

y = 2 into y = mx + c. It becomes

2 = - 3 × 4 + c

2 = - 12 + c

c = 12 + 2

c = 14

The equation becomes

y = - 3x + 14

8 0
3 years ago
must a function that is decreasing over a given interval always be negative over that same interval explain
kolbaska11 [484]

check the picture below.


notice, a function that is decreasing, namely  have a negative slope, doesn't have to be negative.

8 0
3 years ago
Read 2 more answers
Please help!!
postnew [5]

2  \frac{5}{8}  \div 2  \frac{1}{2}
Change the mixed fractions to improper fractions.
To do this, multiply the whole number part by the denominator. Add that to the numerator. Then write the result on top of the denominator.

You would now have:
\frac{21}{8}  \div  \frac{5}{2}
Change the division sign to a multiplication sign by turning the second fraction upside down.
That is,
\frac{21}{8}  \times  \frac{2}{5}

The answer is:
\frac{42}{40}

This can be simplified to:
\frac{21}{20}



8 0
3 years ago
There are seven days how many days are there in 16 weeks
Leya [2.2K]
There are 112 days in 16 weeks because all you have too do is take 16 and multiply it by 7 which gets you 112. Hope this helped.
4 0
2 years ago
Read 2 more answers
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