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Dominik [7]
3 years ago
8

Please help I’ll give brainliest if you explain.

Mathematics
1 answer:
madam [21]3 years ago
6 0

Answer:

B

Step-by-step explanation:

there are four girls in total, and Martina is most probably a girl too. only 1 girl out of the four girls will be chosen so probability is 1/4

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Find a.b. a=[6,-2,3], b=[2,5, -1]
kotykmax [81]

Answer:

a.b=[-1]

Step-by-step explanation:

This is a dot product of a and b

a.b =[6,-2,3].[2,5, -1] = [12-10-3] =[-1]

7 0
3 years ago
When they arrived in Philadelphia, Tyler’s family took a taxi to a museum. The taxi charged $2.70 per mile, and they paid the dr
shtirl [24]

Answer:

5 miles

Step-by-step explanation:

To find how many miles it is from the train station to the museum we first have to subtract the tip from the total fair and you get 13.50 and then you divide 13.50 by 2.70 to get the number of miles and you get 5.

3 0
3 years ago
The length of a rectangle is 3 cm less than twice the width. If the perimeter is 42 cm, what is the length of the rectangle?
larisa [96]

Answer:

The length is 13

Step-by-step explanation:

w+w+l+l= perimeter

if the length is 3m less than twice the width then let's do some math.

42 divided 2 =21. so the width and length of one side have to equal 21. For example, let's use 8 as the width. The length would be twice(16) minus three(13) 13 plus 8 is 21. WOW it equals half of it so no we know the length is 13 and the wdith is 8.

6 0
3 years ago
The number x is reduced by 25% and then halved
Maksim231197 [3]
Since it says the number  x , this means x represents a number , reduced by 25 means that this is most likely half of 25 so whats half of 25%?

well 5 * 5 = 25 , so here is your answer  = 5

8 0
4 years ago
Jerome takes a math course and a science course for summer school. For every 3 hours Jerome spends studying math, he studies sci
gulaghasi [49]

Answer:

he studies his math for 15 hours

Step-by-step explanation:

4 0
3 years ago
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