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Gemiola [76]
3 years ago
11

(2-3a)(8+5a) please help me

Mathematics
1 answer:
IceJOKER [234]3 years ago
7 0

Answer:

-15a² -14a+16

Step-by-step explanation:

<h2>(2-3a)(8+5a)</h2>

2×8=16

2×5a=10a

-3a×8=-24a

-3a×5a=-15a²

16+10a-24a-15a² = -15a² -14a+16

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A population of 1,996 unicorns is going extinct at a rate of about 24 unicorns per year. A separate population of 1,229 dragons
kotykmax [81]

Answer:

https://youtu.be/QZ_a8VXhiSc

Step-by-step explanation:

https://youtu.be/BX0K5IfPMOA

5 0
3 years ago
A mountain climber started at sea level and descended down a cliff. Her location can be represented by -75 feet. How many feet d
mariarad [96]

The mountain climber has travelled 75 feet below sea level while descending down a cliff.

Given:

  • A mountain climber at sea level starts descending down a cliff.
  • Her location can be represented by -75 ft.

To find:

The distance travelled by a mountain climber.

Solution

  • Distance ascending above sea level is taken in a positive direction.
  • Distance descending down sea level is taken in a negative direction.
  • This negative and positive only represents the direction

The location of mountain climber after descending from cliff  = -75 ft

The distance covered by the mountain climber = 75 ft

The mountain climber has travelled 75 feet below sea level while descending down a cliff.

Learn more about descending and ascending here:

brainly.com/question/1477877?referrer=searchResults

brainly.com/question/108740?referrer=searchResults

8 0
3 years ago
For this equation, tell whether it is always true, sometimes true, or nevertrue.
dybincka [34]

To answer the question we make the sum on the left side of the equation:

\begin{gathered} \frac{1}{2}y+5=\frac{y+10}{2} \\ \frac{y}{2}+5=\frac{y+10}{2} \\ \frac{y}{2}+\frac{10}{2}=\frac{y+10}{2} \\ \frac{y+10}{2}=\frac{y+10}{2} \end{gathered}

Since both sides are exactly the same. this equation is always true.

3 0
1 year ago
Write an expression to represent the perimeter of:
malfutka [58]

So perimeter is adding all sides

In this picture, you have all sides, so add them up!

(2a-3)+(3a+1)+(2a) = P

So this expression shows that we're adding all sides that gives us the P, or perimeter :)

8 0
4 years ago
Write an inequality for the situation. Use x as your variable.
kupik [55]

Answer:

Inequality: 25x + 30 < 155

Step-by-step explanation:

25x is the cost per lesson. 30 is the recital fee. 155 is the total cost. We used the < sign because she has to pay <u>LESS </u>than $155.

Solve...

25x + 30 < 155

Subtract 30 on both sides...

25x < 125

Divide 25 on both sides...

x < 5

<u>THATS NOT YOUR ANSWER YET </u>Always make sure to plug in the answer you got BEFORE inputting it.

Plug in 5 for x...

25 ( 5 ) + 30 < 155

125 + 30 < 155

155 < 155

You know that she wants to spend LESS than $155, when she takes 5 lessons, as shown above, she spends exactly $155, your answer would be 4 because she spends less than $155 when taking 4 classes, but exactly $155 when taking five.

Really hope this helps! :)

5 0
3 years ago
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