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3 years ago

Which system of linear equations has the ordered pair (-2,8) as its solution?

Mathematics

1 answer:

dexar [7]3 years ago

8 0

Answer:

y - 2x = 12 and x - 2y = -18

$for \: y - 2x \\ 8 - 2( - 2) \\ 8 + 4 \\ = 12 \\ for \: x - 2y \\ - 2 - 2(8) \\ = - 2 - 16 \\ = - 18$

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Make the subject of the formular A=arh C=2Ar

prohojiy [21]

Answer:

Step-by-step explanation:

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A = C/2r

3 0

3 years ago

What is the value of x? a. 71° b. 142° c. 152° d. 76°

alexgriva [62]

The sum of the measures of the angles of a triangle is 180 degrees.
An isosceles triangle has two congruent sides.
The angles opposite the congruent sides are congruent.
Just like the bottom left angle measures x, the bottom right angle also measures x.

x + x + 38 = 180

2x + 38 = 180

2x = 142

x = 71

3 0

3 years ago

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The designated market area (DMA) of Boston has approximately 3 million television households. Audience research shows that 45 pe

inna [77]

Answer:

22.2%

Step-by-step explanation:

The Program rating of a program is the percentage of TV households in an area that are tuned to a specific program during a specific time period.

The designated market area (DMA) of Boston has approximately 3 million television households.

Audience research shows that 45 percent of these households had their sets turned on during a particular Saturday evening.

45% of 3 Million = 0.45 X 3000000 = 1,350,000

Out of these 1,350,000, 300,000 households were watching Sports Stories.

Therefore, the program rating for Sports Stories in the Boston DMA is:

$\frac{300000}{1350000} X 100 =22.2\%$

3 0

3 years ago

Deena took six final exams and received these scores: 65, 72, 79, 86, 93, 100.

mash [69]

Answer:for the first exam she made a 65 for the second one she made a 72 for the third one she made a b for the forth one she made a 86 for the fifth one its b and replace it with a c for the last one she made a d

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5 0

2 years ago

WITCH ONE DO I PICK PLEASE HELP

Delicious77 [7]

Answer:

0.15 / 1.5

Step-by-step explanation:

4 / 3.700 = 1.08

18 / 19 = 0.9

.15 / 1.5 = 0.1

7 0

3 years ago

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