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3 years ago

Which one of these relations are functions ? Please helpppp fast

Mathematics

1 answer:

vampirchik [111]3 years ago

4 0

Answer:

the 4th and 6th one

Step-by-step explanation:

A function is when there are x- and y-values but each x value has only 1 y-value

Simple: If the x-value is repeated its not a function

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4) solve it a) 3x-2÷5=2

VMariaS [17]

Answer:

$\frac{(3x - 2)}{5} = 2 \\ 3x - 2 = 10 \\ 3x = 2 + 10 \\ 3x = 12 \\ x = \frac{12}{3} \\ \boxed{x = 4}$

<u>x=4</u> is the right answer.

3 0

3 years ago

The total cost of a jacket and a pair of shoes was $52.95. If the price of the jacket was $3.87 less than the pair of shoes, wha

abruzzese [7]

The price of jacket was $24.54

Step-by-step explanation:

Let,

Cost of jacket = x

Cost of pair of shoes = y

According to given statement;

x+y=52.95 Eqn 1

x = y-3.87 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

$(y-3.87)+y=52.95\\y-3.87+y=52.95\\2y=52.95+3.87\\2y=56.82\\$

Dividing both sides by 2

$\frac{2y}{2}=\frac{56.82}{2}\\y=28.41$

Putting y=28.41 in Eqn 2,

$x=28.41-3.87\\x=24.54$

The price of jacket was $24.54

Keywords: linear equation, division

Learn more about linear equations at:

#LearnwithBrainly

8 0

3 years ago

Round 1,393 to the nearest thousand

myrzilka [38]

The answer is 1,000 4 or below you round down and 5 or higher you round up

6 0

3 years ago

Read 2 more answers

Determine whether the statement below is true or false. <br> 7C5 = 7C2

tia_tia [17]

True

Step-by-step explanation:

I double checked it I'm positive

4 0

3 years ago

Read 2 more answers

How would I solve number six?

Basile [38]

Answer:

Angle ABC is equal to 130.4°

Step-by-step explanation:

When an angle is bisected, it is divided into two equal parts, so if BD bisects ∠ABC, then the two angles that add up to it, ∠ABD and ∠DBC, must be equivalent.

We know that ∠ABD equals 65.2, so that must mean that ∠DBC also equals 65.2.

Here is our equation:

∠ABC=∠ABD+∠DBC

After substituting, we will get

∠ABC=65.2+65.2=130.4

130.4° is the measure of ∠ABC.

6 0

3 years ago

Read 2 more answers