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Andrej [43]
3 years ago
5

What is the radius of the circle in the example? 3 cm 5 cm 7 cm

Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:

5

Step-by-step explanation:

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Which of the following is a solution of the system 2x + y = 9 and 3x + 5y = 19.​
Nezavi [6.7K]

2x+y=9

3x+5y=19

I will do this problem in 2 ways. I.)Substitution II.)Elimination

Solution I.) Substitution

We can subtract 2x from both sides in the first equation.

y=9-2x

Now we can substitute the y in the second equation with 9-2x

3x+5(9-2x)=19

-7x+45=19

-7x=-26

x=26/7

y=9-2(26/7)=11/7

Solution II.)Elimination

We can multiply both side of first equation by 5 to get a 5y in both equations.

10x+5y=45

Now because both are positive 5y we just need to do simple subtraction of the 2 equation, each side respectively.

(10x+5y)-(3x+5y)=45-19

7x=26

x=26/7

2*26/7+y=9

y=11/7

Ultimately you get the same answer, both are viable methods, some problems are faster with one method but I recommend mastering both since they are very useful.

4 0
2 years ago
Mr.Wallace receives 10% commission on each sale that he makes. He earned $450 last week in commissions.How much were his sales?​
lesantik [10]

Answer:

4500 dollars

Step-by-step explanation:

6 0
3 years ago
Please help me !??!!!
iris [78.8K]

Answer:

X =0

Step-by-step explanation:

divide each term by 15 and simp

4 0
2 years ago
What measurement is equal to 6 kg
kompoz [17]

Answer:

13.228 pounds

Step-by-step explanation:

Formula:

for an approximate result, multiply the mass value by 2.205

6 0
3 years ago
A man drove his car a distance of 260 miles in 4 hours. If continuing at this rate is possible, he will travel ____ miles in 8 h
spayn [35]

Answer:

520 miles

Step-by-step explanation:

since 4 is half of 8, you just multiply 260 by 2.

4 0
2 years ago
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