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3 years ago

Please help me solve question 1.

Mathematics

1 answer:

Andru [333]3 years ago

4 0

Answer:

630

Step-by-step explanation:

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In a survey of 9444 people in the U.S., 47% say that they own a bicycle.

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Answer:

about +–1%; between 46.5% and 47.5%

Step-by-step explanation:

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3 years ago

A square has a side length of 9 feet. What is the area of the square

oee [108]

Answer:

Step-by-step explanation:

The area of a square is its side length squared so 9^2 is 81

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4 years ago

Plot the x- and y-intercepts to graph the equation. y=−x−5

Natasha_Volkova [10]

X-intercept would be (-5,0)

and the y-intercept would be (0,-5)

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4 years ago

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Solve the equation. 1.25 =0.75+r

Eduardwww [97]

Answer:

0.50

Step-by-step explanation:

Do the opposite of addition

So 1.25 - 0.75

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3 years ago

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Consider the equation: 12x=13-x^212x=13−x 2 12, x, equals, 13, minus, x, squared 1) Rewrite the equation by completing the squar

Flauer [41]

Answer:

$(x + 6)^2 = 49$

$x = 1$ or $x = -13$

Step-by-step explanation:

Given

$12x = 13 - x^2$

Using Completing the Square

$12x = 13 - x^2$ ---- Add $x^2$ to both sides

$x^2 + 12x = 13 - x^2 + x^2$

$x^2 + 12x = 13$

Divide the coefficient of x by 2; then add the square to both sides

$x^2 + 12x + 6^2 = 13 + 6^2$

$x^2 + 12x + 36 = 13 + 36$

$x^2 + 12x + 36 = 49$

Factorize

$x^2 + 6x + 6x + 36 = 49$

$x(x + 6) + 6(x + 6) = 49$

$(x + 6)(x + 6) = 49$

$(x + 6)^2 = 49$

Hence, the equation is $(x + 6)^2 = 49$

Solving further

Take square root of both sides

$(x + 6) = \sqrt{49}$

$x + 6 = \±7$

$x = \±7- 6$

This implies that

$x = 7 - 6$ or $x = -7 -6$

$x = 1$ or $x = -13$

HEnce, the solutions are $x = 1$ or $x = -13$

6 0

3 years ago