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alexira [117]
4 years ago
7

3.2 - 11(2y + 1) + 4

Mathematics
1 answer:
Mekhanik [1.2K]4 years ago
7 0

Answer:

-3.8-22y

Step-by-step explanation:

3.2-11(2y+1)+4

-11×2y=-22y

-11×1=-11

3.2-22y-11+4

3.2-11+4=-3.8

-3.8-22y

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Which of the following points satisfies the inequality 2x - 3y < 1?
Naya [18.7K]

Answer:

The answer is 12,0!

Step-by-step explanation:

6 0
3 years ago
(3x + 1) (2x + 5x – 7)<br> Multiply
Valentin [98]

Answer:

21^2 − 14 − 7

Step-by-step explanation:

(3+1)(2+5−7)

(3x+1)({\color{#c92786}{2x}}+{\color{#c92786}{5x}}-7)

(3x+1)(2x+5x−7)

(3+1)(7−7)

(3x+1)({\color{#c92786}{7x}}-7)

(3x+1)(7x−7)

2

Distribute

3

Distribute

again

4

Multiply by 1

5

Combine like terms

Solution

21^2 − 14 − 7

7 0
3 years ago
A radioactive compound with mass 470 grams decays at a rate of 3% per hour. Which
xxTIMURxx [149]

After 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.

<h3>What is exponential decay?</h3>

During exponential decay, a quantity falls slowly at first before rapidly decreasing. The exponential decay formula is used to calculate population decline and can also be used to calculate half-life.

We know the decay can be as:

\rm C = a(1-r)^t

We have:

a = 470 grams

r = 3% = 0.03

t = 6 hours

\rm C = 470(1-0.03)^6

C = 391.49 grams

Thus, after 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.

Learn more about the exponential decay here:

brainly.com/question/14355665

#SPJ1

3 0
2 years ago
Is (1,1) a solution of the system?
xxTIMURxx [149]
Yes it is the solution to the system
3 0
3 years ago
Read 2 more answers
You are choosing a new cell phone. The screen on your current phone is 10.8 cm high and 6.1 cm wide. The screen on the new phone
Leto [7]

Answer:

19.68 cm^2

Step-by-step explanation:

<em>Area of Current Phone </em>

First, find the area of the current phone. We can assume the screen is rectangular. The area of a rectangle can be found using:

a=l*w

We know the length is 10.8, and the width is 6.1, so we can substitute them in

a=10.8*6.1

a=65.88

Current Phone: 65.88 cm^2

<em>Area of New Phone </em>

Find the area of the new phone.

a=l*w

We know the length is 12.4, and the width is 6.9, so we can substitute them in

a=12.4*6.9

a=85.56

New Phone: 85.56 cm^2

<em>Difference </em>

We want to find how much larger the new phone screen is. To do this, find the difference between the new phone area, and the current phone area.

new phone - current phone

85.56-65.88

19.68

<em><u>The new phone screen is 19.68 cm^2 larger than the current phone screen</u></em>

7 0
3 years ago
Read 2 more answers
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