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2 years ago

please answer the two question and how you answered it NO LINKS AND NO WEBSITES I really need help with this.

Mathematics

1 answer:

kobusy [5.1K]2 years ago

8 0

Answer:

x=10, y=-1

Step-by-step explanation:

x-y=11

2x+y=19

3x=30

x=10

10-y=11

-y=1

y=-1

USED ELIMINATION BC THERE WAS ALREADY A Y AND -Y

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What type of number results when a positive number is divided by a negative number and vice versa.

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The answer is C.

When a positive and negative number are multipled or divided, the result is negative.

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2 years ago

Is -27 divided by (-3) positive or negative & how

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Answer:

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3 years ago

Read 2 more answers

Describe the transformation f(x)=-2x-4;r(x)=(1/2x)

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3 years ago

A pharmacist needs 500 milliliters of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. Fi

sladkih [1.3K]

Let x be ml of 5% soln.

let 500-x be ml of 25% soln.

x*.05=.05x

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Check:

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2 years ago

What are the missing statement and reason in step 2 of the proof? Statement: ∠ABC ≅ ∠BCD, ∠BAD ≅ ∠ADC Reason: For parallel lines

ICE Princess25 [194]

Answer:

Statement: AB=CD, BC=AD

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Statement: AC=AC

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Step-by-step explanation:

1.Statement: $\angle ABC\cong \angle BCD,\angle BAD\cong \angle ADC$ .

Reason: For parallel lines cut by a transversal , corresponding angles are congruent.

2.Statement:AB=CD,BC=AD

Reason: By definition of parallelogram.

3.Statement: AC=AC

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4.Statement: $\triangle ABC\cong \triangle CDA$ .

Reason: SSS criterion for congruence.

5.Statement: $AB\cong CD, BC\cong AD$ .

Reason: Given .

6.Statement: $AB\parallel CD, BC\parallel AD$ .

Reason: By definition of parallelogram.

7.Statement: $\angle BAC\cong \angle ACD$ .

Reason: Alternate Interior Angles Theorem.

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3 years ago

please answer the two question and how you answered it NO LINKS AND NO WEBSITES I really need help with this.​

please answer the two question and how you answered it NO LINKS AND NO WEBSITES I really need help with this.