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Troyanec [42]
4 years ago
12

Which expression shows the sum 9 + 21 rewritten as a product of the GCF and a sum?

Mathematics
2 answers:
Dima020 [189]4 years ago
8 0

Answer: 3(3+7)

Step-by-step explanation:

3(3+7)

3.3+3.7

9+21

olga_2 [115]4 years ago
3 0

Answer:

3(3 + 7)

Step-by-step explanation:

9 + 21

HCF is 3

3(3 + 7)

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For an indirect proof, what must first be assumed to prove that LaTeX: \angle X∠ Xis a right angle?
Sladkaya [172]

Answer:

If the lines that forms < X are perpendicular, it can be assumed that it is a right angle.

Step-by-step explanation:

An indirect proof of an angle is an assumption about the value of the angle that can be made by mere inspection and some considerations.

                                     < X = right angle =  90^{o}

A right angle is one that is equal to 90^{o}. As an indirect proof, if the lines that forms the angle are perpendicular; then it can be assumed to be a right angle. Because perpendicular lines are at right angle to one another.

4 0
3 years ago
Find the first , fourth , and eighth terms of the sequence A(n) = -3 •2 ^x - 1
Usimov [2.4K]

Answer:

A(1) = -7

A(4) = -48

A(8) = -769

Step-by-step explanation:

A(n) = -3.2 ^n - 1.....(1)\\\\Plug \: n= 1\: in \: (1)\\A(1) = -3.2 ^1 - 1 =-3.2-1= -6 -1  \\\huge\red{\boxed{A(1) = -7}}\\\\Plug \: n= 4\: in \: (1)\\A(4) = -3.2 ^4 - 1 =-3.16-1= -48 -1  \\\huge\purple{\boxed{A(4) = -49}}\\\\Plug \: n= 8\: in \: (1)\\A(8) = -3.2 ^8 - 1 =-3.256-1= -768 -1 \\\huge\orange{\boxed{A(8) = -769}}

5 0
4 years ago
The number of seconds between lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away
My name is Ann [436]

Answer:

4.08 km

Step-by-step explanation:

we must know what is the speed of sound to determine the distance at which the ray originated

The speed at which the sound of lightning travels is approximately 0.340km/s

then

d = 0.340km/s*12 s= 4.08 km

5 0
3 years ago
Read 2 more answers
Can someone help me with this both parts btw
Allushta [10]

Answer:

It is c-88=405 trust me :D

Step-by-step explanation:

*whispers* It doesn't hurt to give brainliest, I only need one more for my next tier, can I have it?

3 0
3 years ago
Read 2 more answers
Simplify the expression below. * 8x - 3+5 (9x+2)
shepuryov [24]

Answer:

=53x+7

Step-by-step explanation:

Distribute:

=8x+−3+(5)(9x)+(5)(2)

=8x+−3+45x+10

Combine Like Terms:

=8x+−3+45x+10

=(8x+45x)+(−3+10)

=53x+7

4 0
3 years ago
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