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vichka [17]
3 years ago
11

A=3 and b= -1 what is 2a - 3b

Mathematics
2 answers:
Mrrafil [7]3 years ago
7 0
So it’s 6 - -3 which is 6 + 3 which is 9
nika2105 [10]3 years ago
7 0

Answer:

9

Step-by-step explanation:

Substitte 3 in for a and -1 in for b

2a-3b

2(3)-3(-1)

6-(-3)

9

Hope this helps!

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Could someone please help me
spin [16.1K]

Answer:

A is correct since,

x>-3 and x<1

x=(-2,-1,0)

|x+1|<2

|-2+1|<2

|-1|<2

1<2

|-1+1|<2

|0|<2

0<2

|0+1|<2

|1|<2

1<2

Therefore A is correct

please mark me brainliest

8 0
2 years ago
the manager of a grocery store has taken a random sample of 100 customers the average length of time it took these 100 customers
lora16 [44]

Answer:

with a .95 probability, the sample mean will provide a margin of error 0.196

Step-by-step explanation:

margin of error (ME) from the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in the .95 confidence level (1.96)
  • s is the population standard deviation (1 min.)
  • N is the sample size (100)

ME=\frac{1.96*1}{\sqrt{100} }=0.196

95% confidence interval for check-out time would be 3 ±0.196 min

8 0
4 years ago
What is the probability that a randomly chosen person from this group is a
SVEN [57.7K]

Answer:

0.26 or C

Step-by-step explanation:

Basically you would do the sophomores that attended the jazz band concert (35) and divide that by the total number of students. (137) - - 35 ➗ 137 = .2554744526 round that to .26 or 0.26

5 0
3 years ago
Place decimal points in 431 and 205 so that the difference of the two numbers is 16.19
Gnoma [55]

Answer:

Step-by-step explanation:

Note that 20 (an approximation for 205) less 4 (an approx. for 431) comes out to 16.

This tells us that the proper placement of the decimals is

20.50

-   4.31

----------

and this comes out to 16.19.

7 0
4 years ago
which will have a higher effective interest rate a payday loan for $1700 that is due in 16 days with a fee of $100, or a payday
Fantom [35]
1700 that is due in 14 days with a fee of 100$ because it’s a shorter time period
7 0
3 years ago
Read 2 more answers
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