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777dan777 [17]
3 years ago
13

Use the elimination method to solve the system of equations.

Mathematics
2 answers:
AnnZ [28]3 years ago
6 0
The answer is A.
x= 3/5 or 0.6 and y= 2
Alborosie3 years ago
5 0
<span>   5x + 2y = 7 
+
   −5x + 4y = 5 
____________

6y = 12
y = 12/6
y = 2

</span>5x + 2y = 7 
5x + 2*2 = 7
5x + 4 = 7
5x = 7 - 4
5x = 3
x = 3/5

<span>A. ( 3/5, 2) </span>
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Natasha_Volkova [10]
2401 I had that question a few years ago
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3 years ago
Please help me thank you
KengaRu [80]

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6 0
2 years ago
A politician claims that a proposal for a new traffic law is broadly supported by both political parties and that a person from
Mashutka [201]

Answer:

Based on the 95% confidence interval for the difference in population proportion, there is convincing statistical evidence that he is correct

Step-by-step explanation:

The proportion from the sample of people from his party that support the law = 70%

The number the members of the politicians political party that support the law = 550 people

The proportion from the sample of people from the other party that support the law = 65%

The number the members of the politicians political party that support the law = 420 people

The confidence level of the test = 95%

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Given that the 95% confidence interval for the difference in population proportion ranges from -0.010, to 0.110, it is 95% certain that 0 is among the likely difference in proportion between the two populations and therefore, there is sufficient statistical evidence to suggest that there is no difference in the proportion of the members of either political that support the proposed new traffic law.

4 0
2 years ago
Solve the equation for the indicated variable S=2πrh+2πr²<br> Solve for h
valina [46]

Answer:

Good luck :)

Step-by-step explanation:

S=2πrh+2πr ²

subtract 2πr ² from each side

S -2πr ² = 2πrh

divide by 2πr from each side

(S -2πr ² )/ 2πr  = h

4 0
3 years ago
at first, the ratio of john’s money to peter’s money was 4:7 . after john spent half of his money and peter spent $60, peter had
hodyreva [135]

Answer:

$80

Step-by-step explanation:

4x/2=2x

7x-60

7x-60=2x*2

7x-60=4x

3x=60

x=20

20*4=80

4 0
3 years ago
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