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ollegr [7]
3 years ago
15

Helpp!! its due today plzz helppp :)

Mathematics
2 answers:
Ivan3 years ago
7 0

Answer:

3 1/2

Step-by-step explanation:

7     4                       28

- *  -     ======         ---  ===== 3.5

8     1                        8

djverab [1.8K]3 years ago
3 0

Answer:

3 1/2

Step-by-step explanation:

7/8 ÷ 1/4 you must multiply by the reciprocal

7/8 * 4/1 = 28/8 simplify

3 1/2

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42% of what number is 0.21 ?
Slav-nsk [51]
42% of x= 0.21
0.42x=0.21
x=\frac{0.21}{0.42}
x=0.5
8 0
4 years ago
A year on mars is 1.88 times as long as a year n Earth.An Earth year lasts 365.3 days.Find the legth of a year on mars.
Kazeer [188]
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8 0
3 years ago
A rectangle with sides 3 cm and 5 cm was enlarged in the ratio 1:3. Chapter Reference a How did the perimeter of the rectangle c
lakkis [162]

Answer:

It is three times as large

Step-by-step explanation:

If a ration is also a fraction, and your wording is correct than an enlargement of 1:3 where 1 is the original shape would suggest that the 3 would be that same original shape, be enlarged in terms of 3 compares to 1 so a 300% enlargement.

if the original rectangle has a 16 cm perimeter, than the new rectangle has a 48 cm perimeter.

3 0
3 years ago
a sample of ore is found to be 0.0015% gold and 0.034% copper. what is the percentage of matter in the ore that is neither gold
Ipatiy [6.2K]
100 - 0.034 - 0.0015 = 99.9645
4 0
3 years ago
Look at the image for the question. Show all that apply + explanation to help me figure it out better.
OLga [1]
The general point-slope equation for a str. line is y-k = m(x-h),

where m is the slope and (h,k) is a point on the line.

Given that the line passes thru (-4,6) and (1,2), we find the slope as follows:
           6-2
m = ----------- = -4/5
          -4-1

Subst. -4/5 for m, 6 for k and -4 for h     in    y-k = m(x-h):

y-6 = (-4/5)(x+4)

Compare this result to the equations given.
6 0
3 years ago
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