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3 years ago

3a to the power 4 minus 6a to the power 2plus 9ab to the power 2

Mathematics

2 answers:

wolverine [178]3 years ago

6 0

Is this the answer u want?:

3a4+6a2+9ab2

matrenka [14]3 years ago

5 0

Answer:

Yo mama

Step-by-step explanation:

I took the tewst

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50 ft

juin [17]

9514 1404 393

Answer:

1725 ft²

Step-by-step explanation:

The formula for the area of a trapezoid is ...

A = 1/2(b1 +b2)h

Here, the bases are given as 65 ft and 50 ft, and the height is 30 ft. Then the area is ...

A = 1/2(65 ft +50 ft)(30 ft) = (1/2)(115 ft)(30 ft) = 1725 ft²

You tell the salesman your lawn area is 1725 square feet.

5 0

3 years ago

a drugstores sells pens for $1.50 each and notebooks for $4 each. The owner would like to sell $35 of these items each day.

aleksandrvk [35]

what is the question. I am kinda confused what you want me to solve. Please state the question more clearly.

-brainly.com

4 0

3 years ago

Miriam is picking out some movies to rent, and she is primarily interested in comedies and foreign films. She has narrowed down

Keith_Richards [23]

Answer:

There are 795 combinations.

Step-by-step explanation:

The number of ways or combinations in which we can select k element from a group of n elements is given by:

$nCk=\frac{n!}{k!(n-k)!}$

So, if Miriam want to choose 3 movies with at least two comedies, she have two options: Choose 2 comedies and 1 foreign film or choose 3 comedies.

Then, the number of combinations for every case are:

1. Choose 2 Comedies from the 10 and choose 1 foreign film from 15. This is calculated as:

$10C2*15C1=\frac{10!}{2!(10-8)!}*\frac{15}{1!(15-14)!}$

$10C2*15C1=675$

2. Choose 3 Comedies from the 10. This is calculated as:

$10C3=\frac{10!}{3!(10-3)!}=120$

Therefore, there are 795 combinations and it is calculated as:

675 + 120 = 795

8 0

3 years ago

Triangles and angles<br> Pls help

AleksandrR [38]

Answer:

The two bottom angles of this triangle are both represented by the same variable, in this case, an x. This means, that both of the bottom angles are equal to each other.

So we have:

32 + x + x = 180 (since the TOTAL angles of a triangle adds up to 180)

32 + 2x = 180 (combine the 2 x's together)

2x = 148 (subtract a 32 from both sides)

x = 74

Let me know if this helps!

4 0

3 years ago

What is 5a*2 -6a+7a*2+3a-2+8a+7= <br> Distribute and combine like terms

andrey2020 [161]

$5a^2-6a+7a^2+3a-2+8a+7\\\\=5a^2+7a^2-6a+3a+8a-2+7\\\\=12a^2+5a+5$

6 0

3 years ago

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