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Basile [38]
3 years ago
9

Help me with this, I pick C but I'm really not sure

Mathematics
1 answer:
katovenus [111]3 years ago
8 0

The answer is c because look at the relation ship with the triangle

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What is the product of (3a 2)(4a2 â€"" 2a 9)? 12a3 âÂ’ 2a 18 12a3 6a 9 12a3 âÂ’ 6a2 23a 18 12a3 2a2 23a 18.
Kay [80]

The product of (3a + 2)(4a^2 - 2a + 9) will be  12a^3 + 2a^2 + 23a + 18.

Given expression,

(3a + 2)(4a^2 - 2a + 9).

We have to find the product of (3a + 2)(4a^2 - 2a + 9).

Now using distributive property, we get

3a(4a^2) - 3a(2a) + 3a(9) + 2(4a^2) - 2(2a) + 2(9)

12a^3 - 6a^2 + 27a + 8a^2 - 4a + 18

12a^3 + 2a^2 + 23a + 18

 

Hence the product of (3a + 2)(4a2 - 2a + 9)  is 12a^3 + 2a^2 + 23a + 18.

Thus the correct option is (D). 12a^3 + 2a^2 + 23a + 18.

For more details on distributive property follow the link:

brainly.com/question/13130806

7 0
3 years ago
Look at the equation below <br> a=7b <br> If b=5, what is a?
Lynna [10]

Answer:

D, 35

Step-by-step explanation:

7b, if b=5, is the same as 7(5), or 7*5, which equals 35.

8 0
3 years ago
Read 2 more answers
TRUE/FALSE. the lengths of the altitude of a hypotenuse is the geometric mean of the lengths of the segments of each of the legs
vitfil [10]

In Right Angled Triangle the lengths of the altitude of a hypotenuse is the geometric mean of the lengths of the segments of each of the legs is TRUE

What is a Right angled triangle?

A triangle is said to be right-angled if one of its angles is exactly 90 degrees. The total of the other two angles is 90 degrees. Perpendicular and the triangle's base are the sides that make up the right angle. The longest of the three sides, the third side is known as the hypotenuse.

The right triangle's three sides are interconnected. The Pythagorean Theorem explains this connection. This theorem states that the Hypotenuse2 = Perpendicular2 + Base2.

  • The right angle, or 90°, is always one angle.
  • The hypotenuse is the side with the 90° angle opposite.
  • The longest side is always the hypotenuse.
  • The other two inner angles add up to 90 degrees.

Let assume a right-angled triangle ABC, right-angled at A.

Let AD be the perpendicular drawn from vertex A on hypotenuse BC, intersecting BC at D.

Now, In right-angle triangle ABC,

By using Pythagoras Theorem, we have

AB^2 +AC^2 = BC^2

Now, In right-angle triangle ABD

Using Pythagoras Theorem, we have

AB^2 =AD^2 + BD^2

Now, In right-angle triangle ACD,

AC^2 = AD^2+CD^2

On adding equation (2) and (3), we get

AB^2 +AC^2 = 2AD^2+ BD^2 +CD^2

Now, using equation (1), the above equation can be rewritten as

2AD^2 +CD^2+BD^2 = BC^2

can be further rewritten as

2AD^2 +BD^2 +CD^2 = (CD+BD)^2\\\\BD^2 +CD^2 +2(BD)(CD)=2AD^2 +BD^2 +CD^2\\\\(BD)(CD)=AD^2

AD is geometric mean of BD and CD

Learn more about Right angled triangle from the link below

brainly.com/question/3770177

#SPJ4

8 0
2 years ago
Michael has a substantial student debt, but he recently got a new job, which came with a signing bonus. He calculates that with
Gelneren [198K]

Answer:

800

Step-by-step explanation:

38200 would represent the debt, 400m would be the amount he puts into it every month. 800 must be the bonus because it doesn't have a variable and is added to the monthly amount.

hope this helps :)

7 0
3 years ago
1. Kylie wrote the expression below. (9 + k) x 5 What is the value of Kylie's expression for k= 4? A 65 B 41 C 29 D 28​
TEA [102]
Answer: A 65
Explanation: using PEMDAS you substitute 4 in for k and add 9+4 because it’s in parenthesis. Then you multiply the 13 you get from that by 5 and get 65.
5 0
3 years ago
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