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Andrew [12]
3 years ago
9

Twice the sum of x and y decreased by 21

Mathematics
1 answer:
Semenov [28]3 years ago
8 0
Answer: 2((x+y)-21)

Calculation/Explanation:

Twice the sum of x and y decreased by 21 means that you must add x and y first before decreasing by 21. The last step is to double the whole equation that we just performed.
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Jenny is comparing the cost of two packages of socks.One package has 8 pairs of socks for $12.Another package has 3 pairs of soc
EleoNora [17]

Answer:

  no

Step-by-step explanation:

The second package costs $2 for each pair of socks. If the first package cost that much, it would be 8×$2 = $16 for 8 pairs of socks. That is not the same as $12 for 8 pairs.

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Another way to look at it is the first package costs twice as much as the second, but has more than twice as many pairs of socks. That means the rates are not equivalent.

6 0
4 years ago
if p varies inversely as a square roots of d and p equals 6 when d equals 9 find the formula connecting p and d, d when p equals
netineya [11]

Step-by-step explanation:

p=1/d

6=k/9

6×9=k

54=k

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6 0
3 years ago
Need help asp please I ready
Natalka [10]

Answer:

-4m-3

Step-by-step explanation:

-0.25 times 16 is the same thing as dividing 16 by -4. 16m divided by -4 is -4m

-0.25 times 12 is the same thing as dividing 12 by -4. 12 divided by -4 is -3

3 0
3 years ago
Read 2 more answers
A motorboat travels Downstream on a river for 5 hours. The speed of the current is 2 km/h. The river flows into a still Lake and
lara [203]

Answer:

I think it is 10 km/hr

Step-by-step explanation:

5 hrs = 40 more with 2 km/hr current

2 hrs= less 40 no current

40-2x5=30

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CHECK

10x2=20

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8 0
3 years ago
1 point
valentina_108 [34]

Answer:

34

Step-by-step explanation:

7 0
4 years ago
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