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OLEGan [10]
3 years ago
15

WILL BRAINLEIST IF CORRECT!!!!!!

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0
Answer: -2

Different in Squares: a^2 −b^2 =(a+b)(a−b)

Rad 7^2-3^2 —> Rad 7^2=7 and -3^2= -9

—> 7-9= -2
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Help please !!!!thank yo
goldfiish [28.3K]

Answer:

250

Step-by-step explanation:

There is a 200 start up cost plus 50 per month

Cost = 200 + 50m  where m is the number of months

We have 1 month

Cost = 200 +50(1)

Cost = 250

6 0
2 years ago
Read 2 more answers
The marine needs 14 boats for the 42 people registered for a boat race. How many boats will they need for 6 people?​
Degger [83]

Answer:

2

Step-by-step explanation:

We can write a proportion to determine

42 people          6 people

---------------- = ----------------

14 boats                x boats

Using cross products

42x = 6*14

42x =84

Divide each side by 42

42x/42 = 84/42

x = 2

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5 0
3 years ago
There are 2 kids of the age 14 what is the percentage of the students that are 14?
lys-0071 [83]

Answer:

7% my answer i think if im mistake please dont report me

4 0
2 years ago
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Simplify 5-2x-3+x<br><br> A. 2 - x<br> B. 1<br> C. X - 2<br> D. 2 - 2x
adell [148]

1) Add x to -2x, which is -x

2) Subtract 3 to 5, which is 2

Answer) A

7 0
3 years ago
Read 2 more answers
For a science experiment Marcia dissolved 1.0 kilogram of salt in 3.0 liters of water. For a different experiment,bobby dissolve
Vesnalui [34]
Marcia dissolved 1 kg of salt in 3 litres of water
Bobby dissolved 2 pounds of salt in 7 pints of water
We know that
1 litre = 2.11 pints
We also know that
1 pound = 0.4535 kg
Now if we take the case of Bobby, and convert the pound to kg then
1 pound = 0.4535 kg
2 pounds = (0.4535 * 2) kg
 <span>                 = 0.907 kg</span> <span>               
                 = 0.91 kg</span>
Bobby dissolved the salt in 7 pints of water
We know
2.11 pints = 1 litre
Then
7 pints = (7/2.11) litre
 <span>            = 3.32 litres</span>
So we now see that Bobby has dissolved 0.91 kg of salt in 3.32 litres of water
Marcia dissolved 1 kg of salt in 3 litres of water.
So Marcia has made a more concentrated solution since she has dissolved more salt in less amount of water whereas Bobby has dissolved less amount of salt in more water.



7 0
3 years ago
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