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Naddika [18.5K]
3 years ago
8

5(a−1)−15=3(a+2)+4 a= ?

Mathematics
1 answer:
Alla [95]3 years ago
6 0

Answer:

a = 15

Step-by-step explanation:

screenshots below should explain the answer :)

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Trail Teamwork My daughter needs help with Math Chapter 8 Performance Task on dividing fractions. Can you help her??
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The rule for dividing fractions is "invert and multiply." What you invert is the denominator fraction.

Example: (1/3) / (4/5) = (1/3)×(5/4) . . . . . the denominator 4/5 has been inverted to 5/4 and is now a multiplier.

All the rest of the rules for fractions are unaltered--conversion from mixed numbers to improper fractions, addition and subtraction--they're all the same.
8 0
3 years ago
The number of pounds of dog food that a pet store has is represented by the equation y = negative 15 x + 430, where x represents
sertanlavr [38]

Answer:  B) 115 pounds

Step-by-step explanation:

Because x is the number of days passed, after 21 days, x = 21.

y = -15(21)+430\\\\Multiply\\\\y = -315+430\\\\y=115

Hope it helps <3

6 0
3 years ago
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I think the answer is graphing, plz give me brainliest
4 0
4 years ago
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The problem is 14?minus 85
denpristay [2]

Answer:

-71, and also 71

Step-by-step explanation:

It's Simple Subtraction or if your doing 85-14 its gonna be 71

3 0
4 years ago
Show that (a + b) (a + b)²=a³+ 3a²b+3ab²+b³
mash [69]

Step-by-step explanation:

(a+b)(a+b)² = (a+b)(a²+2ab+b²)

=a(a²+2ab+b²) + b(a²+2ab+b²)

= a³+2a²b+ab² + a²b+2ab²+b³

=a³+2a²b+ a²b+ab² +2ab²+b³

=a³+3a²b+3ab²+b³

7 0
3 years ago
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