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Agata [3.3K]
3 years ago
13

Zoe placed colored blocks on a scale in science class. Each block weighed 0.8 ounces. The total weight of all the colored blocks

was 12.8 ounces. How many blocks did Zoe place on the scale? Write and solve an equation to find the answer. number of blocks =
Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
3 0

Answer:

16 blocks. 12.8=(.8)x

Step-by-step explanation:

ale4655 [162]3 years ago
3 0

Answer:

16

Step-by-step explanation:

because it both so it come out to be 16

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If 6m by 15m is a pond ,is 40m would be enough for fencing the pond
Veseljchak [2.6K]
If the pond were a rectangle, then:
length=15 m
width=6 m

We would have to calculate the perimeter of this rectangle.
Perimeter of a rectangle=2(length)+2(width)

Perimeter of this rectangle=2(15 m)+2(6 m)=30 m+12 m=42 m

We need 42 m and I only have 40 m, therefore, it would not be enough for fencing the pond. 
4 0
3 years ago
Help Use the distributive property to demonstrate that the product of 10 and -(1)/(5) is a negative number. Make sure to include
marissa [1.9K]

Answer:

-2

Step-by-step explanation:

We have to multiply 10 and \frac{-(1)}{(5)}

Here we have to distribute the negative sign.

Distributive property = -(a) = -a

Using the above property, we get  \frac{-(1)}{(5)} = \frac{-1}{5}

Now we have to multiply 10 and  \frac{-1}{5}

= 10 ×  \frac{-1}{5}

= \frac{10 times -1}{5}

= \frac{-10}{5}

Now we have to divide -10 by 5.

= -2

3 0
3 years ago
Why are 4/10 and 4/100 not equal?
Mrrafil [7]
The same reason 4 dimes and 4 pennies aren't equal. 

To put it into decimal terms, 4/10 is 0.40 (or forty cents), whereas 4/100 is 0.04 (or four cents)
6 0
3 years ago
{ y = x + 5 ,4x + y =20 }
Tju [1.3M]
4x+(x+5)=20
5x+5=20
5x=15
X=3
4 0
4 years ago
−4(3m−3)+(−10+8m)=?
Valentin [98]
-4(3m-3)+(-10+8m)
12m+12-1+8m
12m+8m = 20m
+12 -1= +11
answer: 20m+11


*note negative times a negative equals positive and negative times positive is negative 
first: you multiply -4 by 3m which is -12m.
second: you multiply -4 by -3 which is +12
third: find the invisible which is 1. (located right here: +(1) (-10+8m)
fourth: multiply invisible 1 by -10 which is -10
fifth: multiply invisible one by +8m which is +8m 
sixth: combine like terms
seventh: answer
 
5 0
3 years ago
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