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ipn [44]
3 years ago
7

Dave tried to evaluate 55 – 15 + 20 step-by-step.

Mathematics
1 answer:
Softa [21]3 years ago
3 0

Answer:

Step 2

Step-by-step explanation:

In step 2 the expression was 40+20 which would have been 60 but he might have thought addition sign was subtraction so he did 40-20 which is 20 so he is wrong made mistake in step 2

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Lisa's dog has 4 squeaky toys. Two thirds of the dog's toys are squeaky toys. How many dog toys does Lisa's have in all?
viva [34]
.  Lisa's dog has 4 squeaky toys   
.  the squeaky toys are 2/3 of all the dog's toys

.  let <em>x</em> be number of all dog toys

<em>make an equation</em>
(2/3)<em>x</em> = 4   <em>← solve</em>
x=6

<em>check</em>
2/3 × 6 = 4

<u>Lisa's Dog has 6 toys in all</u>



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3 years ago
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nikitadnepr [17]
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3 years ago
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Agata [3.3K]

Answer:

Step-by-step explanation:

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6 0
3 years ago
Is -3 plus pi a rational number or a irrational number
sdas [7]

Answer:

irrational

Step-by-step explanation:

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8 0
4 years ago
What does x stand for in 4+x=3x
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