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ZanzabumX [31]
3 years ago
7

What is 6.4r-7-2.9r simplified

Mathematics
1 answer:
Marta_Voda [28]3 years ago
4 0

Answer:

3.5r - 7

General Formulas and Concepts:

<u>Algebra I</u>

  • Combining like terms

Step-by-step explanation:

<u>Step 1: Define</u>

6.4r - 7 - 2.9r

<u>Step 2: Simplify</u>

  1. Combine like terms:                    3.5r - 7

And we have our final answer!

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Can you help me with number 10
rewona [7]

\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \cfrac{(3^{-2})^2}{3^{-3}}\implies \cfrac{3^{-2\cdot 2}}{3^{-3}}\implies \cfrac{3^{-4}}{3^{-3}}\implies \cfrac{1}{3^{-3}\cdot 3^4}\implies \cfrac{1}{3^{-3+4}}\implies \cfrac{1}{3^1}\implies \cfrac{1}{3}

4 0
4 years ago
The volume of a cube is 216 ft3 what is the length of a side
Yuri [45]

Answer:

Step-by-step explanation:

i think its 6

5 0
3 years ago
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Which equation is it <br>​
Alex_Xolod [135]
The equation is A

explanation:
8 0
3 years ago
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Please help me asap thank you so so so much u are the most amazing
bixtya [17]

The smallest angle would be 19 degrees. So option D is correct.

<h3>What is the sum of the octagon?</h3>

The sum of exterior angles of the regular octagon is 360 degrees.

Given;

The angles

x + 13 + 2x - 1 + 2x + 6 + 2x + 12 + 2x - 17 + 3x - 4 + 3x - 10 + 4x = 360

19x - 1 = 360

19x = 359

x = 18.89

The smallest angle would be

2x - 17 = 2(18.89) - 17 = 19

Learn more about angles;

brainly.com/question/13954458

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5 0
2 years ago
A delivery service charges a base price for an overnight delivery of a package plus an extra charge for each point the package w
Alexxx [7]

Answer:

Step-by-step explanation:

BASE + 3x = 22.85.....................equation 1

BASE + 10x = 40..........................equation 2

BASE = 40 - 10x

NOW SUBSTITUTE (40-10x) FOR BASE IN THE FIRST EQUATION

40 - 10x + 3x = 22.85

-7x = 22.85 - 40

-7x = -17.15

x = -17.15/-7

x = $2.45 IS THE PRICE FOR EACH POUND.

BASE + 10 x 2.45=40

BASE + 24.50=40

BASE = 40-24.50

BASE = 15.50 IS THE BASE PRICE FOR THE DELIVERY.

PROOF

15.50+3*2.45=22.85

15.50+7.35=22.85

22.85=22.85

3 0
3 years ago
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