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allochka39001 [22]
3 years ago
15

Which expression is exactly equivalent to 5a + 3b + 4 + 7a + 9 ?

Mathematics
2 answers:
Cloud [144]3 years ago
7 0

Answer:

Step-by-step explanation:

5a+3b+4+7a+9=

=12a+3b+13

allsm [11]3 years ago
6 0
Expression 2
12a+3b+13
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Subtract 3 from each side to isolate the x and you get x=y-3
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I need help pleaseee
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3

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On a standardized exam, the scores are normally distributed with a mean of 300 and
Misha Larkins [42]

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-1.5

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3 years ago
Each of the 25 balls in a certain box is either red, blue, or white and has a number from 1 to 10 painted on it. If one ball is
LekaFEV [45]

Answer: Insufficient Information

The probability of selecting a red ball, a blue ball or a white ball is unknown.

Step-by-step explanation:

The probability of selecting a red ball, a blue ball or a white ball is unknown.

There could be 13 red balls, 1 blue ball and 11 white balls in the bag. There could be 3 red balls, 2 blue balls and 20 white balls in the bag. It is impossible to say with the  information given have even numbers on them. The same thing applies to the number of balls with numbers or even numbers on them. The question does not specify how many white balls have each number on them.

8 0
3 years ago
A pet toy manufacturer is designing a plastic ball for dogs that will float in water. In order for the ball to float it must hav
algol13

Answer:

3.576 cm

Step-by-step explanation:

radius of ball, r=?

Given:

Density, p = 0.600g/mL

mass, m= 115g

finding volume, v of ball by using formula p=m/v

v= m/p

= 115/0.600

=191.666 mL^3

=191.666 cm^3

Now using formula v= (4/3)πr^3 to find radius, r of the ball

r^3= 3v/4π

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   =45.75 cm

r   =3.5767 cm !

7 0
3 years ago
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