3 years ago

Let a = {1, 2, 3, 4, 5} and b = {2, 4}. what is a ∩ b?

1 answer:

8 0

That upside down u looking thing is the " intersection " of sets a and b. That means only the numbers that are in both sets.
answer is : 2,4

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Solve this formula for the velocity for (d)<br><br> Show your work

Vinvika [58]

Answer:

d = vt

Step-by-step explanation:

Step 1: Write equation

v = d/t

Step 2: Multiply both sides by t

vt = d

Step 3: Rewrite

d = vt

7 0

3 years ago

Four glasses of milk and 2 snack bars have a total of 72 carbohydrates (carbs), and 2 glasses of milk and 3 snack bars have a t

Travka [436]

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Step-by-step explanation:

Let,

Glass of milk = x

Snack bar = y

According to given statement;

4x+2y=72 Eqn 1

2x+3y=64 Eqn 2

Multiplying Eqn 2 by 2

$2(2x+3y=64)\\4x+6y=128\ \ \ Eqn\ 3$

Subtracting Eqn 1 from Eqn 3

$(4x+6y)-(4x+2y)=128-72\\4x+6y-4x-2y=56\\4y=56$

Dividing both sides by 4

$\frac{4y}{4}=\frac{56}{4}\\y=14$

Putting y=14 in Eqn 1

$4x+2(14)=72\\4x+28=72\\4x=72-28\\4x=44$

Dividing both sides by 4

$\frac{4x}{4}=\frac{44}{4}\\x=11$

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

6 0

3 years ago

I’m so confused I don’t know how to subtract fractions. What is 2+2-1 2/3

Alexxandr [17]

Answer:

its 7/3 or you could put 2 1/3

Step-by-step explanation:

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3 years ago

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What is the answer to 5/12 x6

tester [92]

Answer:

2.5

Step-by-step explanation:

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3 years ago

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Root of the equation 0=2x+8

Alinara [238K]

What exactly is it asking for

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3 years ago