MATHEMATICS HIGH SCHOOL

2x + y = 3 x - 2y = -1 

If equation one is multiplied by 2 and then the equations are added, the result is _____.

Answers

Answer 1
Answer: 4x+2y=6
X+2y=-1
I think you mean subtract the two.
That would get rid of the the y
3x=7 x=7/3
Then plug that into one of the organism equations
Answer 2
Answer:

Answer:

2

Step-by-step explanation:

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Let k = 5. What is the value of 27 – k · 2?

A.
11

B.
17

C.
24

D.
44

Answers

Given:  27-k · 2 = n

Solution: 27-5 ·2 = n
               22 · 2 = n

Answer: 44 option D

Are the rations 3:6 and 6:3 equal why or why not?

Answers

Answer: No.

Step-by-step explanation:

    No, these ratios are not equal. We can view these ratios as fractions and divide to see if they are equal.

         3:6 = (3)/(6) = 0.5

         6:3 = (6)/(3) = 2

    No, 0.5 ≠ 2.

Which of the following is a multiple of 2? A. 847 B. 1,000 C. 2,461 D. 75

Answers

it would be B.) reason being 1,000 is the only even number. solving the problem you ar multiplying by two (even number) not an odd number.
Hope this helps 

The 1000 is a multiple of 2, so the correct option is B.

Here to find the multiple of 2, we need to divide in following numbers:

The number are 847, 1000, 2461 and 75.

847/2 = 423.5.

1000/2 = 500.

2461/2 = 1230.5.

75/2 = 37.5.

Reason being 1,000 is the only even number, solving the problem multiplying by two (even number) not an odd number.

Therefore, the 1000 is a multiple of 2.

Learn more about multiple here:

brainly.com/question/10734142

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1 kg = ___ g

A : 1
B : 10
C : 100
D : 1,000

Answers

D: 1000 grams

thats the answer

Use a two-column proof to prove the Triangle Proportionality Theorem:

Answers

Answer:

Step-by-step explanation:

From the picture attached,

                 Statements                                        Reasons

1). In ΔABC, DE intersects AB and AC  1). Given

2). DE║BC                                              2). Given

3). ∠ADE ≅ ABC                                    3). Corresponding angles postulate

4). ∠AED ≅ ∠ACB                                 4). Corresponding angles postulate

5). ΔADE ~ ΔABC                                  5). AA similarity postulate

6). (AD)/(AB)=(AE)/(AC)                                           6). Definition of two similar triangles

Hence proved.  

Scientists use a form of shorthand call ____ to express very large or very small numbers?

Answers

Scientific notation. For example: 276 is the standard form of a number while 2.76 * 10^2 would be the same number in scientific notation.
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