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Gennadij [26K]
3 years ago
11

Here this to help the 7th graders A complete overveiw

Mathematics
2 answers:
spayn [35]3 years ago
7 0
Thank u so much ur the best >3
Ymorist [56]3 years ago
3 0

Answer: wow thank you

Step-by-step explanation:

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If ⅔ of a number is 20 what is ½ of the number?​
zmey [24]

Answer:

15

Step-by-step explanation:

2/3 of 30 is 20, so 1/2 of 30 is 15

6 0
2 years ago
Read 2 more answers
C.) 4. Solve the system of equations
raketka [301]
You can set them equal to each other so -3x+4=4x-10 and then you add 3x and 10 on both sides and get7x=14 and then divided both sides by 7 and get x = 2 and check by plugging in and you get -2 for y on both so solution is x=2
7 0
2 years ago
Suppose that 15 inches of wire costs 90 cents. At the same rate, how many inches of wire can be bought for 48 cents?
tamaranim1 [39]
This can be solved by making an equivalent ratio.
The original ratio is what we know, 15 inches of wire for 90 cents.
In a ratio of inches of wire:cents, this would be 15:90.

Now for the equivalent ratio.
We don't know the number in the inches place but we do know it for the cents place.
Let's use x to represent inches of wire.
x:48 is our new ratio, and we need to find x.

Since x:48 and 15:90 are equivalent, that means the same thing that was done to 90 to get 48 has to be done to 15 to get the value of x, since the same thing must be applied to both sides.
We can find what 90 was divided by (which is what we'll have to divide 15 by) by dividing 90 by 48.
90 / 48 = 1.875

This means 48 • 1.875 = 90 and x • 1.875 = 15.
Since we don't know x though, we can isolate it by dividing both sides by 1.875.
x • 1.875 = 15
x • 1.875 / 1.875 = x
15 / 1.875 = 8
So x is 8.

Answer:
While you can be 15 inches of wire for 90 cents, you can buy 8 inches of wire for 48 cents at the same rate.
3 0
3 years ago
Please Help me with this:
Korolek [52]

just find the points

3 0
3 years ago
On Monday a team of street sweepers cleaned 1/3 of the city block. Tuesday, the team cleaned 1/2 as many blocks as on Monday. Ho
IrinaVladis [17]

Answer:

1/2 half

Step-by-step explanation:

(1/3)/2 = 1/6

1/6 + 1/3 = 1/6 + 2/6 = 3/6 = 1/2

6 0
2 years ago
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