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In-s [12.5K]
3 years ago
8

Which expression is equivalent to 91+39 ?

Mathematics
1 answer:
KIM [24]3 years ago
5 0

Answer:

130

Step-by-step explanation:

i think

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A Midwestern competition awarded 38 ribbons. The number of blue ribbons was 1 less than the number of white ribbons. The number
xxTIMURxx [149]
There are 12 white ribbons, 15 red ribbons, and 11 blue ribbons.

38=(w-1)+(w+3)+w
combine like terms
38=2+3w
subtract 2 from both sides
36=3w
divide 3 on both sides
12=w

w-1=b
12-1=b
11=b

w+3=r
12+3=r
15=r

Check Your Work
w+r+b=38
15+11+12=38
38=38
7 0
3 years ago
A floor 10m by 40m is covered by square tiles 20cm. How many tiles are needed to cover the floor?
Lady_Fox [76]

Answer:

10,000

Step-by-step explanation:

We can find the area of the floor in cm^2 and divide by the are of 1 tile in cm^2.

1 m = 100 cm

10 m = 1000 cm

40 m = 4000 cm

area of floor = LW = 1000 cm * 4000 cm = 4,000,000 cm^2

area of tile = s^2 = (20 cm)^2 = 400 cm^2

number of tiles = 4,000,000/400 = 10,000

Answer: 10,000 tiles

4 0
3 years ago
11, -15 = 5130 - 107 - 50 12.
TiliK225 [7]
There is not enough given in order to solve. What are you asking?
6 0
3 years ago
Which symbol correctly compares these fractions?
olganol [36]

Step-by-step explanation:

Or are you looking for the least

3 0
3 years ago
Marla has $95.50 in her savings account. She deposits $5 every week. Her mother also deposits $20 into the account every time Ma
tiny-mole [99]
Coefficient: 20 or 5
Variable:  c or w
Constant:  95.50

Pt B:  20(5) + 5(20) + 95.50
          100 + 100 + 95.50
          295.50

Pt C:The coefficient of c would change to 10
8 0
4 years ago
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