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3 years ago

Please make an explanation, I haven’t learned much on this before

Mathematics

1 answer:

Montano1993 [528]3 years ago

3 0

Answer:

Triangle: 4

Trapezoid: 3.8

Step-by-step explanation:

All you need to find is what of the three or four adds to the perimeter

3+5 is 8

So 12-8 is 4

So the ? is 4

8.3 plus 3.8 plus 8.3 is 20.4

24.2-20.4 is 3.8

Hope this helps!

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RATIONAL

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3 years ago

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Which choices are equivalent to the product below √2•√3 •√8

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3 years ago

You have to be at your job by 9 a.m. every morning. If it takes you 15 minutes to

ElenaW [278]

Answer:

8:10am

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You have to leave home because it takes you 15 minutes to walk to the bus stop so that will be 8:25am

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3 years ago

X = y^2 - 1

ohaa [14]

Answer: The correct option is (B) $2y^2-y-6=0.$

Step-by-step explanation: We are given the following system of equations :

$x=y^2-1~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\2x-y=4~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)$

We are to find the equation that could be the result of using substitution to solve the above system.

Substituting the value of x from equation (i) in equation (ii), we get

$2x-y=4\\\\\Rightarrow 2(y^2-1)-y=4\\\\\Rightarrow 2y^2-2-y=4\\\\\Rightarrow 2y^2-y-2-4=0\\\\\Rightarrow 2y^2-y-6=0.$

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Option (B) is CORRECT.

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3 years ago

You roll a pair of number cubes.What is the probability of getting even numbers on both cubes?

andreev551 [17]

Answer:

1/4 or 25%

Step-by-step explanation:

Let's see, we want to know probability of an event in which we roll two even numbers.

"We know that probability is defined as number of desired outcomes divided by all possible outcomes"

e - even number

o - odd number

our desired outcome: (e, e) total of 1

all possible outcomes: (e, e), (e, o), (o, e), (o,o) total of 4

that gives us 1/4

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4 years ago