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Anastaziya [24]
3 years ago
9

HELP When does expanding and simplifying a(b + c) result in a positive value for ac?

Mathematics
1 answer:
Reil [10]3 years ago
7 0

Answer:

When c and a are positive or both are negative

Step-by-step explanation:

negative times negative equals positive so if a was negative and c was negative -a*-c= ac

Of course positive times positive equals negative so if a and c were positive we could do

a*c= ac

Hope I could help !

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+4,000 / 28,573,199 = [45]

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Whenever the population standard deviation is unknown, which distribution is used in developing an interval estimate for a popul
r-ruslan [8.4K]

Answer:

The t-distribution is used.

Step-by-step explanation:

When we dont know the standard deviation of the population, we use the t-distribution(t-table).

Otherwise, the z-distribution(z-table) is used.

So the answer to this question is the t-distribution.

4 0
3 years ago
JK = 7x + 9<br> JL = 114, and<br> KL = 9x + 9,<br> Find KL.
VikaD [51]

Answer:

KL= 63

Step-by-step explanation:

JK=7x+9 , JL=114 , KL=9x+9 ( if the points are on the same line and point J at the end point and K in the middle)

*J_______________________K___________________________L

JL=JK+KL

114=7x+9+9x+9

114-18=16 x

16x=98

x=98/16=6

KL= 9x+9

KL=9(6)+9

KL= 63

8 0
3 years ago
Need help asap please
Rzqust [24]

Answer:

Option 3

Step-by-step explanation:

The number on the inside is the dividend and the number on the outside is the divisor. So we just have to place the dividend on the top and the divisor on the bottom.

7 0
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4. What's the area of the above figure, which has sides of length 6 and 8?
ANTONII [103]

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48

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To get the area of anything you multiply the width by the length.

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