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larisa86 [58]
3 years ago
8

Simplify 7(B + 3) + 2B. 9B + 3 9B + 10 9B + 21

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0
Expand

(7B + 21 + 2B)

Collect like terms

(7B + 2B) + 21

Simplify 

9B + 21

Answer: C) or the third option.
valkas [14]3 years ago
7 0
Remember, we can add like terms
also remember the commutative property of addition which is
you can move the order around when adding or a+b=b+a

also, distributive property which is a(b+c)=ab+ac

so

distribute first
7(B+3)=7(B)+7(3)=7B+21

now we have
7B+21+2B
by the commutative property
7B+2B+21
adding like terms
9B+21

answer is 9B+21
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Using Pythagorean theorem

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\\ \sf\longmapsto P^2=6^2-5^2

\\ \sf\longmapsto P^2=36-25

\\ \sf\longmapsto P^2=11

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2 years ago
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<h3><u>Solution: </u></h3>

Radius of Cylindrical Pillar , r = 28 Cm = 0.28 m.

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Curved surface area of a pillar -

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Solve the equation for x.<br><br><br> x2 = 576<br> /\<br> || <br> is supposed to be 2 over x
aleksklad [387]

Answer:

288

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Help me please with explanation
8_murik_8 [283]

Step-by-step explanation:

angle AOB = x+3

angle AOC = 2x + 11

angle BOC = 4x-7

angle AOC = angle AOB + angle BOC

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angle BOC = 4x - 7 = 13

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3 years ago
Help me with this question
MA_775_DIABLO [31]

<em>Answer: C</em>

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