Ask question

Ask question

All categories

2 years ago

15

For y = 3x - 2x2 +5x3, show how to find the value for y, when x = 3. Show your work

2 answers:

Ugo [173]2 years ago

6 0

Y= 3(3)–2(3)2+5(3)3
y= 9–2*3*2+5*9
y=9–12+5*9
y=9–12+45
y=42

madreJ [45]2 years ago

4 0

Answer:

6

Step-by-step explanation:

y = 3x - 2x² + 5×3

<em>when</em><em> </em>x = 3

y = 3(3) - 2(3)² + 15

y = 9 - 18 + 15

y = 15 + 9 - 15

y = 24 - 18

y = 6

You might be interested in

I NEED HELP ASAP write an equivalent unit rate to running 5/4 a mile in 9 minutes

svetlana [45]

Answer:

The unit rate is 0. 14 miles per minute.

Hence, option a is correct.

Step-by-step explanation:

Given

Running of 5/4 a mile in 9 minutes.

To determine

The unit rate = ?

Given that the running 5/4 a mile in 9 minutes.

i.e.

Miles covered in 9 minutes = 5/4 or 1.25 miles

Miles covered in 1 minute = 1.25/9

= 0. 14 miles per minute

Therefore, we conclude that:

The unit rate is 0. 14 miles per minute.

Hence, option a is correct.

6 0

2 years ago

A popular radio station wants to record the ages of their listener. The results are shown in the table. Which type of graph woul

alukav5142 [94]

Most appropriate answer is
D. Histogram

4 0

3 years ago

Read 2 more answers

What is up guys!

melisa1 [442]

Answer:

Yes, No, Yes

Step-by-step explanation:

<u>Use the Pythagorean theorem:</u>

a² + b² = c²

<u>Verify this for each line:</u>

1.

28² + 45² = 53²
2809 = 2809
Yes

2.

33² + 56² = 64²
4225 ≠ 4096
No

3.

36² + 77² = 85²
7225 = 7225
Yes

5 0

2 years ago

Solve the following equation: x÷3-5=-7

Elodia [21]

Answer:

- 6

Step-by-step explanation:

Step 1:

x ÷ 3 - 5 = - 7 Equation

Step 2:

x ÷ 3 = - 2 Add 5 on both sides

Answer:

x = - 6 Multiply 3 on both sides

Hope This Helps :)

3 0

2 years ago

3. Marcus had an average score of 90% on two biology tests about protists. If his first test score was 96%, which score did he r

Maurinko [17]

Answer:

B: 84%

Step-by-step explanation:

7 0

2 years ago