What is the solution to this system of linear equations 2x +3y =3 7x -3y= 24

What is the approximate are of the the pool

erastovalidia [21]

area (pool)=area (rectangle) - area (triangle)

1) we calculate the area of the rectangle:
area (rectangle)=lenght x width
area (rectangle)=36 ft x 20 ft=720 ft².

2) we calculate the area of the triangle:
area (triangle)=(base x height) / 2
area (triangle)=(6 ft x 5 ft) / 2=15 ft².

3) we calculate the area of this pool:
area (pool)=720 ft²-15 ft²=705 ft²

Answer: the area of the pool is 705 ft².

4 0

4 years ago

PLEASE HELP "What is the value of x in the triangle" (15 Points)

AysviL [449]

Answer:

The answer is B.) 3

Step-by-step explanation:

4 0

2 years ago

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The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,608 kilowatt hours (kWh

Marat540 [252]

Answer:

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 10,608 kWh of electricity this year.

Given that the size of the sample n = 187

Given that mean of sample x⁻ = 10737 kWh

The Standard deviation of the Population = 1220kWh

Level of significance = 0.05

The critical value (Z₀.₀₅)= 1.96

Step(ii):-

Null Hypothesis: H₀:μ > 10608 kWh

Alternative Hypothesis: H₁: μ < 10608kWh

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{10737- 10608 }{\frac{1220}{\sqrt{187} } }$

Z = 1.4460

Final answer:-

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average.

3 0

3 years ago

In line 53, the author of Passage 2 uses quotation

notsponge [240]

(E) "cast doubt on the aptness of a description"

Writers will occasionally include a term or phrase in quotation marks to question its veracity. The author of paragraph 2 denigrates the learning theorists by putting the word "experts" in quotation marks because of their "shocking" estimate of canine intelligence.

The answer is not (A). One may contend that the author's use of quote marks conveys surprise or even irritation. (B) is the wrong answer. The term "experts" being surrounded by quotation marks is not a show of "respect," but rather of suspicion.

The answer is not (C). There is no need to doubt the plain usage of the word "experts" in this context, even when the author may have reservations about the theories of the experts. D is likewise a poor choice.

Here's another question with an answer similar to this about quotation marks: brainly.com/question/1434552

#SPJ4

6 0

2 years ago

12 divided by (3y) when y is -2

Trava [24]

Answer:

The answer is -8. Please mark me brainliest, thank you

8 0

3 years ago

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