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Komok [63]
3 years ago
6

Write an expression that is equivalent to 5(3x+2z)

Mathematics
2 answers:
Olin [163]3 years ago
6 0
15x+10z is equivalent to 5(3x+2z)
OleMash [197]3 years ago
6 0
15x+10z is an equivalent expression
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I need help finding the lowest term for -8/9+11/15​
Liono4ka [1.6K]

Answer:

-7/45

Step-by-step explanation:

First, find the lowest common denominator for 9 and 15. It's 45. Make both fractions over 45 by multiplying the top and bottom by the same number.

-\frac{8}{9} +\frac{11}{15}

= -\frac{8*5}{9*5} +\frac{11*3}{15*3}  Since 15*3=45, multiply the top by 3 also.    Since 9*5=45, multiply the top by 5 also.

= -\frac{40}{45} +\frac{33}{45}

= \frac{-40+33}{45}    Combine the fractions

= -\frac{7}{45}    Answer in lowest terms

6 0
3 years ago
Two bike rental companies have different pricing systems. Company a charges a flat fee of $4 plus $2 per mile. Company b does no
EastWind [94]

Answer:it will the take 5 mitutes

Step-by-step explanation:

Let x represent the distance at which both companies charge the same amount.

Let y represent the cost of x miles when using company A.

Let z represent the cost of x miles when using company B.

Company A charges a flat fee of $4 plus $2 per mile. It means that

y = 4 + 2x

Company b does not charge a flat fee but charges $2.80 per mile driven. This means that

z = 2.8x

To determine the distance before both plans will be be the same, we would equate both equations. It becomes.

4 + 2x = 2.8x

2.8x - 2x = 4

0.8x = 4

x = 4/0.8 = 5

3 0
3 years ago
Cassidy's family built a swimming pool that is
Ilya [14]

Answer:

 

Step-by-step explanation:

‎‎‎‎‎‎‎‎‎‎‎‎        

7 0
3 years ago
Read 2 more answers
How do you explain mental math to multiple two numbers
Fantom [35]
When multiplying two numbers, a person can mentally add one of those numbers the other number amount of times.
7 0
3 years ago
How to do step by step this
timofeeve [1]

Answer:

1/4 - (2/5 + (1/3 - (3 - 7/2) - 1/4) - 2/15)

= 1/4 - (2/5 + (1/3 - (6/2 - 7/2) - 1/4) - 2/15)

= 1/4 - (2/5 + (1/3 - (-1/2) - 1/4) - 2/15)

= 1/4 - (2/5 + (1/3 + 1/2 - 1/4) - 2/15)

= 1/4 - (2/5 + (4/12 + 6/12 - 3/12) - 2/15)

= 1/4 - (2/5 + (7/12) - 2/15)

= 1/4 - (2/5 + 7/12 - 2/15)

= 1/4 - (24/60 + 35/60 - 8/60)

= 1/4 - (51/60)

= 15/60 - 51/60

= -36/60

= -3/5

8 0
3 years ago
Read 2 more answers
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