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4 years ago

Which ordered pair is a solution of the equation y = 3x+5

Mathematics

1 answer:

Daniel [21]4 years ago

7 0

Answer:

All you have to do is insert the first value where the x is, and the second value where the y is.

y = 3x + 5

11 = 3(2) + 5

11 = 6 + 5

11 = 11

So, this is right.

Now, let's check (3,13)

y = 3x + 5

13 = 3(3) + 5

13 = 9 + 5

13 = 14

This is NOT true. So, your answer is: Only (2,11)

Hope this helps!

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Jessica Reads a story about a turtle that swam 16 feet in 24 seconds. She assumes that the time that it takes the turtle to swim

Zigmanuir [339]

Answer:

Time (secs) => distance (ft)

1 => ⅔

15 => 10

24 => 16

45 => 30

Step-by-step explanation:

Equation to represent this proportional relationship is $d = tk$ , where,

t = time

d = distance

k = constant of proportionality

To complete the table, let's find k given that the turtles swarm 16 ft (d) in 24 secs (t).

Substitute d = 16, t = 24 into the equation.

$d = tk$

$16 = 24k$

$\frac{16}{24} = k$ (division property of equality)

$\frac{2}{3} = k$

Let's complete the table by substituting the value of k and the other given value of t or d, as the case may be:

For 1 sec, let's find distance (d):

$d = tk$

$d = 1*\frac{2}{3}$

d = ⅔ ft

For 10 ft, let's find the time (t) taken:

$d = tk$

$10 = t*\frac{2}{3}$

Multiply both sides by 3

$10*3 = t*\frac{2}{3}*3$

$30 = t*2$

Divide both sides by 2

$\frac{30}{2} = \frac{t*2}{2}$

$15 = t$

t = 15 secs

For 45 secs, let's find distance (d):

$d = tk$

$d = 45*\frac{2}{3} = 15*2$

d = 30 ft

5 0

4 years ago

Which of the following is equal to 2?

AnnZ [28]

Awnser is A 6+4 divided by [2+1]x3

8 0

3 years ago

Read 2 more answers

Silas took 17 bags of glass to the recycling center. He still has 8 bags of plastic to take to the recycling center. Which equat

Masja [62]

I think it’s C. X+17 = 8

4 0

3 years ago

What is the approximate area of the circle shown below?<br> ???? Help ???

PIT_PIT [208]

Answer:

D. 1662 cm

Step-by-step explanation:

A=πr2=π•23≈1661.90251cm²

which is 1661.9

but of course you have to round up for 1662 cm :)

7 0

3 years ago

What is the percent of change if 20 is increased to 25?

natima [27]

That would be 25%

that is because 5 is 25% of 20

Hope this helps!

6 0

3 years ago

Read 2 more answers